./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 b13c8169fb5357220d29959d63393b66877a012797fdaa495805bf5299de8fb1 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 16:08:39,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 16:08:39,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 16:08:39,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 16:08:39,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 16:08:39,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 16:08:39,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 16:08:39,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 16:08:39,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 16:08:39,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 16:08:39,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 16:08:39,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 16:08:39,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 16:08:39,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 16:08:39,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 16:08:39,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 16:08:39,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 16:08:39,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 16:08:39,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 16:08:39,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 16:08:39,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 16:08:39,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 16:08:39,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 16:08:39,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 16:08:39,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 16:08:39,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 16:08:39,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 16:08:39,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 16:08:39,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 16:08:39,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 16:08:39,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 16:08:39,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 16:08:39,757 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 16:08:39,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 16:08:39,758 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 16:08:39,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 16:08:39,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 16:08:39,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 16:08:39,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 16:08:39,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 16:08:39,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 16:08:39,762 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 16:08:39,795 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 16:08:39,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 16:08:39,796 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 16:08:39,796 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 16:08:39,797 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 16:08:39,797 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 16:08:39,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 16:08:39,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 16:08:39,798 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 16:08:39,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 16:08:39,799 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 16:08:39,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 16:08:39,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 16:08:39,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 16:08:39,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 16:08:39,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 16:08:39,801 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 16:08:39,801 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 16:08:39,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 16:08:39,801 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 16:08:39,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 16:08:39,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 16:08:39,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 16:08:39,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 16:08:39,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:08:39,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 16:08:39,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 16:08:39,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 16:08:39,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 16:08:39,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 16:08:39,804 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 16:08:39,805 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 16:08:39,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 16:08:39,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 16:08:39,805 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b13c8169fb5357220d29959d63393b66877a012797fdaa495805bf5299de8fb1 [2021-12-17 16:08:40,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 16:08:40,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 16:08:40,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 16:08:40,076 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 16:08:40,077 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 16:08:40,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-12-17 16:08:40,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/184786d21/ce1f7722f45b4e649928ceef58d6bbf8/FLAG9f57efa38 [2021-12-17 16:08:40,706 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 16:08:40,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-12-17 16:08:40,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/184786d21/ce1f7722f45b4e649928ceef58d6bbf8/FLAG9f57efa38 [2021-12-17 16:08:41,135 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/184786d21/ce1f7722f45b4e649928ceef58d6bbf8 [2021-12-17 16:08:41,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 16:08:41,141 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 16:08:41,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 16:08:41,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 16:08:41,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 16:08:41,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:08:41" (1/1) ... [2021-12-17 16:08:41,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14edfb37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:41, skipping insertion in model container [2021-12-17 16:08:41,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:08:41" (1/1) ... [2021-12-17 16:08:41,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 16:08:41,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 16:08:41,426 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8622,8635] [2021-12-17 16:08:41,454 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15089,15102] [2021-12-17 16:08:41,465 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17286,17299] [2021-12-17 16:08:41,470 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18310,18323] [2021-12-17 16:08:41,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:08:41,633 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 16:08:41,690 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8622,8635] [2021-12-17 16:08:41,706 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15089,15102] [2021-12-17 16:08:41,720 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17286,17299] [2021-12-17 16:08:41,727 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18310,18323] [2021-12-17 16:08:41,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:08:41,878 INFO L208 MainTranslator]: Completed translation [2021-12-17 16:08:41,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:41 WrapperNode [2021-12-17 16:08:41,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 16:08:41,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 16:08:41,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 16:08:41,881 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 16:08:41,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:41" (1/1) ... [2021-12-17 16:08:41,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:41" (1/1) ... [2021-12-17 16:08:42,008 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2551 [2021-12-17 16:08:42,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 16:08:42,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 16:08:42,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 16:08:42,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 16:08:42,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:41" (1/1) ... [2021-12-17 16:08:42,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:41" (1/1) ... [2021-12-17 16:08:42,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:41" (1/1) ... [2021-12-17 16:08:42,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:41" (1/1) ... [2021-12-17 16:08:42,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:41" (1/1) ... [2021-12-17 16:08:42,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:41" (1/1) ... [2021-12-17 16:08:42,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:41" (1/1) ... [2021-12-17 16:08:42,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 16:08:42,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 16:08:42,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 16:08:42,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 16:08:42,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:41" (1/1) ... [2021-12-17 16:08:42,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:08:42,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:08:42,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 16:08:42,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 16:08:42,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 16:08:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 16:08:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 16:08:42,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 16:08:42,416 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 16:08:42,423 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 16:08:43,481 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 16:08:43,490 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 16:08:43,490 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 16:08:43,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:08:43 BoogieIcfgContainer [2021-12-17 16:08:43,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 16:08:43,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 16:08:43,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 16:08:43,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 16:08:43,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:08:41" (1/3) ... [2021-12-17 16:08:43,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b43e37c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:08:43, skipping insertion in model container [2021-12-17 16:08:43,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:08:41" (2/3) ... [2021-12-17 16:08:43,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b43e37c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:08:43, skipping insertion in model container [2021-12-17 16:08:43,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:08:43" (3/3) ... [2021-12-17 16:08:43,499 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-12-17 16:08:43,503 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 16:08:43,503 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-17 16:08:43,542 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 16:08:43,548 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 16:08:43,548 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-17 16:08:43,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 442 states, 437 states have (on average 1.8581235697940504) internal successors, (812), 441 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:43,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-17 16:08:43,592 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:43,592 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] [2021-12-17 16:08:43,593 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:08:43,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:43,601 INFO L85 PathProgramCache]: Analyzing trace with hash 881754525, now seen corresponding path program 1 times [2021-12-17 16:08:43,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:43,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89414593] [2021-12-17 16:08:43,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:43,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:43,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:43,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89414593] [2021-12-17 16:08:43,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89414593] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:43,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:43,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:08:43,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510585837] [2021-12-17 16:08:43,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:43,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:08:43,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:43,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:08:43,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:43,886 INFO L87 Difference]: Start difference. First operand has 442 states, 437 states have (on average 1.8581235697940504) internal successors, (812), 441 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:44,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:44,032 INFO L93 Difference]: Finished difference Result 690 states and 1215 transitions. [2021-12-17 16:08:44,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:08:44,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-12-17 16:08:44,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:44,054 INFO L225 Difference]: With dead ends: 690 [2021-12-17 16:08:44,055 INFO L226 Difference]: Without dead ends: 546 [2021-12-17 16:08:44,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:44,061 INFO L933 BasicCegarLoop]: 833 mSDtfsCounter, 422 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:44,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 1360 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:08:44,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-12-17 16:08:44,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 540. [2021-12-17 16:08:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 536 states have (on average 1.333955223880597) internal successors, (715), 539 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:44,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 715 transitions. [2021-12-17 16:08:44,129 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 715 transitions. Word has length 50 [2021-12-17 16:08:44,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:44,130 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 715 transitions. [2021-12-17 16:08:44,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:44,131 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 715 transitions. [2021-12-17 16:08:44,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-17 16:08:44,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:44,134 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] [2021-12-17 16:08:44,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 16:08:44,135 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:08:44,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:44,136 INFO L85 PathProgramCache]: Analyzing trace with hash -88586633, now seen corresponding path program 1 times [2021-12-17 16:08:44,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:44,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759983700] [2021-12-17 16:08:44,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:44,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:44,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:44,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:44,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759983700] [2021-12-17 16:08:44,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759983700] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:44,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:44,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:08:44,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799852095] [2021-12-17 16:08:44,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:44,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:08:44,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:44,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:08:44,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:44,280 INFO L87 Difference]: Start difference. First operand 540 states and 715 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:44,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:44,367 INFO L93 Difference]: Finished difference Result 955 states and 1317 transitions. [2021-12-17 16:08:44,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:08:44,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-12-17 16:08:44,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:44,372 INFO L225 Difference]: With dead ends: 955 [2021-12-17 16:08:44,372 INFO L226 Difference]: Without dead ends: 714 [2021-12-17 16:08:44,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:44,377 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 236 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:44,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 1018 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:08:44,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-12-17 16:08:44,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 708. [2021-12-17 16:08:44,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 704 states have (on average 1.3536931818181819) internal successors, (953), 707 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:44,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 953 transitions. [2021-12-17 16:08:44,425 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 953 transitions. Word has length 50 [2021-12-17 16:08:44,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:44,428 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 953 transitions. [2021-12-17 16:08:44,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:44,429 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 953 transitions. [2021-12-17 16:08:44,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-17 16:08:44,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:44,433 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] [2021-12-17 16:08:44,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 16:08:44,434 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:08:44,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:44,439 INFO L85 PathProgramCache]: Analyzing trace with hash 301591798, now seen corresponding path program 1 times [2021-12-17 16:08:44,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:44,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148172419] [2021-12-17 16:08:44,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:44,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:44,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:44,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:44,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148172419] [2021-12-17 16:08:44,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148172419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:44,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:44,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:08:44,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327983887] [2021-12-17 16:08:44,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:44,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:08:44,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:44,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:08:44,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:44,560 INFO L87 Difference]: Start difference. First operand 708 states and 953 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:44,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:44,645 INFO L93 Difference]: Finished difference Result 1364 states and 1888 transitions. [2021-12-17 16:08:44,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:08:44,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-12-17 16:08:44,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:44,650 INFO L225 Difference]: With dead ends: 1364 [2021-12-17 16:08:44,650 INFO L226 Difference]: Without dead ends: 1035 [2021-12-17 16:08:44,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:44,656 INFO L933 BasicCegarLoop]: 618 mSDtfsCounter, 297 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:44,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 994 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:08:44,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2021-12-17 16:08:44,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1028. [2021-12-17 16:08:44,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1024 states have (on average 1.3642578125) internal successors, (1397), 1027 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:44,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1397 transitions. [2021-12-17 16:08:44,696 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1397 transitions. Word has length 50 [2021-12-17 16:08:44,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:44,698 INFO L470 AbstractCegarLoop]: Abstraction has 1028 states and 1397 transitions. [2021-12-17 16:08:44,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:44,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1397 transitions. [2021-12-17 16:08:44,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-17 16:08:44,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:44,701 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] [2021-12-17 16:08:44,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 16:08:44,702 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:08:44,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:44,703 INFO L85 PathProgramCache]: Analyzing trace with hash 157307916, now seen corresponding path program 1 times [2021-12-17 16:08:44,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:44,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142993355] [2021-12-17 16:08:44,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:44,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:44,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:44,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:44,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142993355] [2021-12-17 16:08:44,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142993355] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:44,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:44,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:08:44,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67180133] [2021-12-17 16:08:44,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:44,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:08:44,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:44,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:08:44,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:08:44,829 INFO L87 Difference]: Start difference. First operand 1028 states and 1397 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:45,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:45,165 INFO L93 Difference]: Finished difference Result 2117 states and 2920 transitions. [2021-12-17 16:08:45,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:08:45,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-12-17 16:08:45,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:45,171 INFO L225 Difference]: With dead ends: 2117 [2021-12-17 16:08:45,172 INFO L226 Difference]: Without dead ends: 1255 [2021-12-17 16:08:45,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:08:45,183 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 1684 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:45,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1684 Valid, 399 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:08:45,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2021-12-17 16:08:45,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1245. [2021-12-17 16:08:45,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1245 states, 1241 states have (on average 1.3738920225624496) internal successors, (1705), 1244 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:45,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1705 transitions. [2021-12-17 16:08:45,235 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1705 transitions. Word has length 50 [2021-12-17 16:08:45,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:45,235 INFO L470 AbstractCegarLoop]: Abstraction has 1245 states and 1705 transitions. [2021-12-17 16:08:45,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:45,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1705 transitions. [2021-12-17 16:08:45,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-17 16:08:45,238 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:45,238 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] [2021-12-17 16:08:45,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 16:08:45,238 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:08:45,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:45,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1701829494, now seen corresponding path program 1 times [2021-12-17 16:08:45,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:45,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910637391] [2021-12-17 16:08:45,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:45,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:45,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:45,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:45,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910637391] [2021-12-17 16:08:45,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910637391] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:45,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:45,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:08:45,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733046849] [2021-12-17 16:08:45,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:45,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:08:45,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:45,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:08:45,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:08:45,330 INFO L87 Difference]: Start difference. First operand 1245 states and 1705 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:45,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:45,633 INFO L93 Difference]: Finished difference Result 2672 states and 3692 transitions. [2021-12-17 16:08:45,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:08:45,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-12-17 16:08:45,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:45,640 INFO L225 Difference]: With dead ends: 2672 [2021-12-17 16:08:45,640 INFO L226 Difference]: Without dead ends: 1593 [2021-12-17 16:08:45,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:08:45,643 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 1484 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:45,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1484 Valid, 356 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:08:45,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2021-12-17 16:08:45,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1580. [2021-12-17 16:08:45,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1576 states have (on average 1.368020304568528) internal successors, (2156), 1579 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:45,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2156 transitions. [2021-12-17 16:08:45,715 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2156 transitions. Word has length 51 [2021-12-17 16:08:45,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:45,716 INFO L470 AbstractCegarLoop]: Abstraction has 1580 states and 2156 transitions. [2021-12-17 16:08:45,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:45,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2156 transitions. [2021-12-17 16:08:45,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-17 16:08:45,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:45,718 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] [2021-12-17 16:08:45,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 16:08:45,718 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:08:45,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:45,719 INFO L85 PathProgramCache]: Analyzing trace with hash 824761644, now seen corresponding path program 1 times [2021-12-17 16:08:45,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:45,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268767988] [2021-12-17 16:08:45,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:45,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:45,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:45,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:45,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268767988] [2021-12-17 16:08:45,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268767988] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:45,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:45,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:08:45,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636015682] [2021-12-17 16:08:45,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:45,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:08:45,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:45,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:08:45,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:08:45,772 INFO L87 Difference]: Start difference. First operand 1580 states and 2156 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:46,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:46,069 INFO L93 Difference]: Finished difference Result 3497 states and 4815 transitions. [2021-12-17 16:08:46,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:08:46,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-17 16:08:46,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:46,077 INFO L225 Difference]: With dead ends: 3497 [2021-12-17 16:08:46,077 INFO L226 Difference]: Without dead ends: 2080 [2021-12-17 16:08:46,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:08:46,080 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 1341 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1341 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:46,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1341 Valid, 324 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:08:46,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2021-12-17 16:08:46,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 1521. [2021-12-17 16:08:46,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1517 states have (on average 1.3645352669742914) internal successors, (2070), 1520 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:46,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2070 transitions. [2021-12-17 16:08:46,156 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2070 transitions. Word has length 52 [2021-12-17 16:08:46,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:46,156 INFO L470 AbstractCegarLoop]: Abstraction has 1521 states and 2070 transitions. [2021-12-17 16:08:46,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:46,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2070 transitions. [2021-12-17 16:08:46,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-17 16:08:46,158 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:46,158 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] [2021-12-17 16:08:46,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 16:08:46,159 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:08:46,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:46,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1198562519, now seen corresponding path program 1 times [2021-12-17 16:08:46,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:46,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595426797] [2021-12-17 16:08:46,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:46,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:46,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:46,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:46,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595426797] [2021-12-17 16:08:46,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595426797] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:46,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:46,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:08:46,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479701683] [2021-12-17 16:08:46,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:46,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 16:08:46,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:46,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 16:08:46,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:08:46,228 INFO L87 Difference]: Start difference. First operand 1521 states and 2070 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:46,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:46,929 INFO L93 Difference]: Finished difference Result 5054 states and 7046 transitions. [2021-12-17 16:08:46,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 16:08:46,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-17 16:08:46,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:46,947 INFO L225 Difference]: With dead ends: 5054 [2021-12-17 16:08:46,947 INFO L226 Difference]: Without dead ends: 4621 [2021-12-17 16:08:46,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-17 16:08:46,949 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 2998 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2998 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:46,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2998 Valid, 630 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:08:46,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4621 states. [2021-12-17 16:08:47,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4621 to 1533. [2021-12-17 16:08:47,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1533 states, 1529 states have (on average 1.3642903858731197) internal successors, (2086), 1532 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:47,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 2086 transitions. [2021-12-17 16:08:47,065 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 2086 transitions. Word has length 52 [2021-12-17 16:08:47,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:47,065 INFO L470 AbstractCegarLoop]: Abstraction has 1533 states and 2086 transitions. [2021-12-17 16:08:47,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:47,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 2086 transitions. [2021-12-17 16:08:47,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-17 16:08:47,067 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:47,067 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] [2021-12-17 16:08:47,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 16:08:47,067 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:08:47,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:47,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1743373944, now seen corresponding path program 1 times [2021-12-17 16:08:47,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:47,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481621345] [2021-12-17 16:08:47,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:47,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:47,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:47,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:47,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481621345] [2021-12-17 16:08:47,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481621345] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:47,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:47,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:08:47,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096667551] [2021-12-17 16:08:47,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:47,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 16:08:47,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:47,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 16:08:47,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:08:47,158 INFO L87 Difference]: Start difference. First operand 1533 states and 2086 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:47,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:47,842 INFO L93 Difference]: Finished difference Result 4964 states and 6883 transitions. [2021-12-17 16:08:47,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 16:08:47,842 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-17 16:08:47,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:47,858 INFO L225 Difference]: With dead ends: 4964 [2021-12-17 16:08:47,858 INFO L226 Difference]: Without dead ends: 4243 [2021-12-17 16:08:47,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-17 16:08:47,861 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 2507 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2507 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:47,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2507 Valid, 585 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:08:47,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4243 states. [2021-12-17 16:08:47,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4243 to 1547. [2021-12-17 16:08:47,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1547 states, 1543 states have (on average 1.3635774465327284) internal successors, (2104), 1546 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:47,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1547 states to 1547 states and 2104 transitions. [2021-12-17 16:08:47,996 INFO L78 Accepts]: Start accepts. Automaton has 1547 states and 2104 transitions. Word has length 53 [2021-12-17 16:08:47,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:47,997 INFO L470 AbstractCegarLoop]: Abstraction has 1547 states and 2104 transitions. [2021-12-17 16:08:47,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:47,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1547 states and 2104 transitions. [2021-12-17 16:08:47,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-17 16:08:47,999 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:47,999 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] [2021-12-17 16:08:47,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 16:08:47,999 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:08:48,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:48,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1359815673, now seen corresponding path program 1 times [2021-12-17 16:08:48,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:48,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833063917] [2021-12-17 16:08:48,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:48,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:48,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:48,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833063917] [2021-12-17 16:08:48,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833063917] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:48,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:48,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:08:48,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878468083] [2021-12-17 16:08:48,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:48,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 16:08:48,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:48,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 16:08:48,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:08:48,082 INFO L87 Difference]: Start difference. First operand 1547 states and 2104 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:48,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:48,951 INFO L93 Difference]: Finished difference Result 5348 states and 7493 transitions. [2021-12-17 16:08:48,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 16:08:48,951 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-17 16:08:48,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:48,969 INFO L225 Difference]: With dead ends: 5348 [2021-12-17 16:08:48,969 INFO L226 Difference]: Without dead ends: 4798 [2021-12-17 16:08:48,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-17 16:08:48,971 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 1890 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:48,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1890 Valid, 719 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:08:48,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4798 states. [2021-12-17 16:08:49,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4798 to 1569. [2021-12-17 16:08:49,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1565 states have (on average 1.3642172523961662) internal successors, (2135), 1568 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:49,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2135 transitions. [2021-12-17 16:08:49,108 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2135 transitions. Word has length 53 [2021-12-17 16:08:49,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:49,108 INFO L470 AbstractCegarLoop]: Abstraction has 1569 states and 2135 transitions. [2021-12-17 16:08:49,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:49,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2135 transitions. [2021-12-17 16:08:49,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-17 16:08:49,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:49,110 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] [2021-12-17 16:08:49,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 16:08:49,111 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:08:49,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:49,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1681497036, now seen corresponding path program 1 times [2021-12-17 16:08:49,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:49,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889202502] [2021-12-17 16:08:49,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:49,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:49,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:49,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889202502] [2021-12-17 16:08:49,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889202502] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:49,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:49,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 16:08:49,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469150104] [2021-12-17 16:08:49,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:49,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 16:08:49,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:49,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 16:08:49,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 16:08:49,229 INFO L87 Difference]: Start difference. First operand 1569 states and 2135 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:49,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:49,988 INFO L93 Difference]: Finished difference Result 4267 states and 5917 transitions. [2021-12-17 16:08:49,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 16:08:49,988 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-17 16:08:49,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:50,000 INFO L225 Difference]: With dead ends: 4267 [2021-12-17 16:08:50,000 INFO L226 Difference]: Without dead ends: 3217 [2021-12-17 16:08:50,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-12-17 16:08:50,004 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 1975 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1975 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:50,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1975 Valid, 1179 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 16:08:50,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2021-12-17 16:08:50,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 1569. [2021-12-17 16:08:50,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1565 states have (on average 1.3610223642172523) internal successors, (2130), 1568 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:50,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2130 transitions. [2021-12-17 16:08:50,144 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2130 transitions. Word has length 54 [2021-12-17 16:08:50,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:50,144 INFO L470 AbstractCegarLoop]: Abstraction has 1569 states and 2130 transitions. [2021-12-17 16:08:50,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:50,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2130 transitions. [2021-12-17 16:08:50,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-17 16:08:50,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:50,146 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] [2021-12-17 16:08:50,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 16:08:50,147 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:08:50,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:50,147 INFO L85 PathProgramCache]: Analyzing trace with hash 711155878, now seen corresponding path program 1 times [2021-12-17 16:08:50,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:50,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306667236] [2021-12-17 16:08:50,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:50,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:50,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:50,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:50,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306667236] [2021-12-17 16:08:50,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306667236] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:50,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:50,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:08:50,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245623170] [2021-12-17 16:08:50,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:50,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:08:50,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:50,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:08:50,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:08:50,254 INFO L87 Difference]: Start difference. First operand 1569 states and 2130 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:51,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:51,328 INFO L93 Difference]: Finished difference Result 5297 states and 7432 transitions. [2021-12-17 16:08:51,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:08:51,329 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-17 16:08:51,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:51,343 INFO L225 Difference]: With dead ends: 5297 [2021-12-17 16:08:51,344 INFO L226 Difference]: Without dead ends: 4375 [2021-12-17 16:08:51,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:08:51,347 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 1979 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1979 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:51,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1979 Valid, 1496 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 16:08:51,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4375 states. [2021-12-17 16:08:51,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4375 to 1540. [2021-12-17 16:08:51,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1536 states have (on average 1.3600260416666667) internal successors, (2089), 1539 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2089 transitions. [2021-12-17 16:08:51,486 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2089 transitions. Word has length 54 [2021-12-17 16:08:51,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:51,486 INFO L470 AbstractCegarLoop]: Abstraction has 1540 states and 2089 transitions. [2021-12-17 16:08:51,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:51,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2089 transitions. [2021-12-17 16:08:51,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-17 16:08:51,488 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:51,488 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] [2021-12-17 16:08:51,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 16:08:51,488 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:08:51,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:51,489 INFO L85 PathProgramCache]: Analyzing trace with hash -839465653, now seen corresponding path program 1 times [2021-12-17 16:08:51,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:51,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205653914] [2021-12-17 16:08:51,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:51,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:51,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:51,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:51,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205653914] [2021-12-17 16:08:51,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205653914] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:51,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:51,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:08:51,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040985225] [2021-12-17 16:08:51,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:51,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:08:51,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:51,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:08:51,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:08:51,585 INFO L87 Difference]: Start difference. First operand 1540 states and 2089 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:52,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:52,681 INFO L93 Difference]: Finished difference Result 4592 states and 6425 transitions. [2021-12-17 16:08:52,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 16:08:52,682 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-17 16:08:52,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:52,692 INFO L225 Difference]: With dead ends: 4592 [2021-12-17 16:08:52,693 INFO L226 Difference]: Without dead ends: 4587 [2021-12-17 16:08:52,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2021-12-17 16:08:52,695 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 1589 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 1204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:52,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1589 Valid, 1658 Invalid, 1204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 16:08:52,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4587 states. [2021-12-17 16:08:52,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4587 to 1540. [2021-12-17 16:08:52,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1536 states have (on average 1.3587239583333333) internal successors, (2087), 1539 states have internal predecessors, (2087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:52,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2087 transitions. [2021-12-17 16:08:52,850 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2087 transitions. Word has length 54 [2021-12-17 16:08:52,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:52,850 INFO L470 AbstractCegarLoop]: Abstraction has 1540 states and 2087 transitions. [2021-12-17 16:08:52,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:52,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2087 transitions. [2021-12-17 16:08:52,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-17 16:08:52,852 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:52,852 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] [2021-12-17 16:08:52,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 16:08:52,852 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:08:52,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:52,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1126690749, now seen corresponding path program 1 times [2021-12-17 16:08:52,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:52,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534873076] [2021-12-17 16:08:52,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:52,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:52,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:52,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534873076] [2021-12-17 16:08:52,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534873076] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:52,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:52,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:08:52,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685614466] [2021-12-17 16:08:52,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:52,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:08:52,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:52,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:08:52,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:52,903 INFO L87 Difference]: Start difference. First operand 1540 states and 2087 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:53,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:53,031 INFO L93 Difference]: Finished difference Result 2068 states and 2797 transitions. [2021-12-17 16:08:53,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:08:53,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-17 16:08:53,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:53,034 INFO L225 Difference]: With dead ends: 2068 [2021-12-17 16:08:53,034 INFO L226 Difference]: Without dead ends: 1509 [2021-12-17 16:08:53,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:53,036 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 257 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:53,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 673 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:08:53,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2021-12-17 16:08:53,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1507. [2021-12-17 16:08:53,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1503 states have (on average 1.3293413173652695) internal successors, (1998), 1506 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:53,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1998 transitions. [2021-12-17 16:08:53,174 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1998 transitions. Word has length 55 [2021-12-17 16:08:53,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:53,174 INFO L470 AbstractCegarLoop]: Abstraction has 1507 states and 1998 transitions. [2021-12-17 16:08:53,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:53,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1998 transitions. [2021-12-17 16:08:53,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-17 16:08:53,177 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:53,177 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] [2021-12-17 16:08:53,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 16:08:53,178 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:08:53,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:53,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1317678866, now seen corresponding path program 1 times [2021-12-17 16:08:53,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:53,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390365283] [2021-12-17 16:08:53,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:53,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:53,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:53,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:53,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390365283] [2021-12-17 16:08:53,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390365283] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:53,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:53,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:08:53,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472362213] [2021-12-17 16:08:53,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:53,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:08:53,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:53,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:08:53,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:53,226 INFO L87 Difference]: Start difference. First operand 1507 states and 1998 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:53,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:53,391 INFO L93 Difference]: Finished difference Result 2127 states and 2843 transitions. [2021-12-17 16:08:53,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:08:53,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-17 16:08:53,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:53,394 INFO L225 Difference]: With dead ends: 2127 [2021-12-17 16:08:53,394 INFO L226 Difference]: Without dead ends: 1514 [2021-12-17 16:08:53,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:53,396 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 206 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:53,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 744 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:08:53,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2021-12-17 16:08:53,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1507. [2021-12-17 16:08:53,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1503 states have (on average 1.3140385894876914) internal successors, (1975), 1506 states have internal predecessors, (1975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:53,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1975 transitions. [2021-12-17 16:08:53,513 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1975 transitions. Word has length 55 [2021-12-17 16:08:53,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:53,513 INFO L470 AbstractCegarLoop]: Abstraction has 1507 states and 1975 transitions. [2021-12-17 16:08:53,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:53,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1975 transitions. [2021-12-17 16:08:53,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-17 16:08:53,515 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:53,515 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] [2021-12-17 16:08:53,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 16:08:53,516 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:08:53,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:53,516 INFO L85 PathProgramCache]: Analyzing trace with hash -944081870, now seen corresponding path program 1 times [2021-12-17 16:08:53,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:53,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517632489] [2021-12-17 16:08:53,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:53,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:53,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:53,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517632489] [2021-12-17 16:08:53,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517632489] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:53,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:53,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:08:53,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807322097] [2021-12-17 16:08:53,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:53,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:08:53,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:53,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:08:53,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:53,553 INFO L87 Difference]: Start difference. First operand 1507 states and 1975 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:53,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:53,708 INFO L93 Difference]: Finished difference Result 2164 states and 2861 transitions. [2021-12-17 16:08:53,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:08:53,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-17 16:08:53,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:53,711 INFO L225 Difference]: With dead ends: 2164 [2021-12-17 16:08:53,711 INFO L226 Difference]: Without dead ends: 1513 [2021-12-17 16:08:53,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:53,713 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 222 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:53,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 745 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:08:53,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2021-12-17 16:08:53,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1507. [2021-12-17 16:08:53,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1503 states have (on average 1.3020625415834997) internal successors, (1957), 1506 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:53,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1957 transitions. [2021-12-17 16:08:53,831 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1957 transitions. Word has length 55 [2021-12-17 16:08:53,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:53,832 INFO L470 AbstractCegarLoop]: Abstraction has 1507 states and 1957 transitions. [2021-12-17 16:08:53,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:53,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1957 transitions. [2021-12-17 16:08:53,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-17 16:08:53,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:53,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:08:53,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 16:08:53,834 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:08:53,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:53,835 INFO L85 PathProgramCache]: Analyzing trace with hash -599519829, now seen corresponding path program 1 times [2021-12-17 16:08:53,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:53,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139558939] [2021-12-17 16:08:53,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:53,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:53,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:53,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:53,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139558939] [2021-12-17 16:08:53,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139558939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:53,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:53,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:08:53,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695436344] [2021-12-17 16:08:53,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:53,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:08:53,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:53,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:08:53,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:53,868 INFO L87 Difference]: Start difference. First operand 1507 states and 1957 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:54,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:54,095 INFO L93 Difference]: Finished difference Result 2638 states and 3459 transitions. [2021-12-17 16:08:54,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:08:54,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-12-17 16:08:54,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:54,098 INFO L225 Difference]: With dead ends: 2638 [2021-12-17 16:08:54,098 INFO L226 Difference]: Without dead ends: 1786 [2021-12-17 16:08:54,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:08:54,100 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 280 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:54,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 420 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:08:54,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2021-12-17 16:08:54,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1397. [2021-12-17 16:08:54,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1393 states have (on average 1.3058147882268485) internal successors, (1819), 1396 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:54,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 1819 transitions. [2021-12-17 16:08:54,225 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 1819 transitions. Word has length 57 [2021-12-17 16:08:54,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:54,225 INFO L470 AbstractCegarLoop]: Abstraction has 1397 states and 1819 transitions. [2021-12-17 16:08:54,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:54,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 1819 transitions. [2021-12-17 16:08:54,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-17 16:08:54,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:54,227 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] [2021-12-17 16:08:54,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 16:08:54,228 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:08:54,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:54,228 INFO L85 PathProgramCache]: Analyzing trace with hash -953719962, now seen corresponding path program 1 times [2021-12-17 16:08:54,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:54,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112274134] [2021-12-17 16:08:54,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:54,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:54,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:54,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112274134] [2021-12-17 16:08:54,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112274134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:54,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:54,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:08:54,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874942940] [2021-12-17 16:08:54,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:54,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:08:54,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:54,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:08:54,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:08:54,568 INFO L87 Difference]: Start difference. First operand 1397 states and 1819 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:56,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:56,236 INFO L93 Difference]: Finished difference Result 5245 states and 7058 transitions. [2021-12-17 16:08:56,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:08:56,237 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-12-17 16:08:56,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:56,247 INFO L225 Difference]: With dead ends: 5245 [2021-12-17 16:08:56,248 INFO L226 Difference]: Without dead ends: 5039 [2021-12-17 16:08:56,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=199, Invalid=671, Unknown=0, NotChecked=0, Total=870 [2021-12-17 16:08:56,250 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 3441 mSDsluCounter, 3794 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3441 SdHoareTripleChecker+Valid, 4328 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:56,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3441 Valid, 4328 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 16:08:56,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5039 states. [2021-12-17 16:08:56,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5039 to 1372. [2021-12-17 16:08:56,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1369 states have (on average 1.3067932797662527) internal successors, (1789), 1371 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:56,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 1789 transitions. [2021-12-17 16:08:56,429 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 1789 transitions. Word has length 57 [2021-12-17 16:08:56,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:56,429 INFO L470 AbstractCegarLoop]: Abstraction has 1372 states and 1789 transitions. [2021-12-17 16:08:56,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:56,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 1789 transitions. [2021-12-17 16:08:56,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-17 16:08:56,431 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:56,432 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] [2021-12-17 16:08:56,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 16:08:56,432 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:08:56,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:56,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1381909423, now seen corresponding path program 1 times [2021-12-17 16:08:56,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:56,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386056722] [2021-12-17 16:08:56,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:56,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:56,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:56,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:56,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386056722] [2021-12-17 16:08:56,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386056722] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:56,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:56,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:08:56,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537175388] [2021-12-17 16:08:56,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:56,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:08:56,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:56,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:08:56,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:08:56,733 INFO L87 Difference]: Start difference. First operand 1372 states and 1789 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:58,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:58,304 INFO L93 Difference]: Finished difference Result 4073 states and 5464 transitions. [2021-12-17 16:08:58,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-17 16:08:58,305 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-12-17 16:08:58,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:58,312 INFO L225 Difference]: With dead ends: 4073 [2021-12-17 16:08:58,312 INFO L226 Difference]: Without dead ends: 4012 [2021-12-17 16:08:58,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2021-12-17 16:08:58,313 INFO L933 BasicCegarLoop]: 472 mSDtfsCounter, 2238 mSDsluCounter, 3621 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2238 SdHoareTripleChecker+Valid, 4093 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:58,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2238 Valid, 4093 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 16:08:58,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4012 states. [2021-12-17 16:08:58,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4012 to 1360. [2021-12-17 16:08:58,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1358 states have (on average 1.3070692194403535) internal successors, (1775), 1359 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:58,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1775 transitions. [2021-12-17 16:08:58,534 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1775 transitions. Word has length 57 [2021-12-17 16:08:58,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:08:58,534 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 1775 transitions. [2021-12-17 16:08:58,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:58,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1775 transitions. [2021-12-17 16:08:58,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-17 16:08:58,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:08:58,536 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] [2021-12-17 16:08:58,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 16:08:58,536 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:08:58,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:08:58,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1918440678, now seen corresponding path program 1 times [2021-12-17 16:08:58,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:08:58,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625712037] [2021-12-17 16:08:58,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:08:58,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:08:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:08:58,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:08:58,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:08:58,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625712037] [2021-12-17 16:08:58,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625712037] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:08:58,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:08:58,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:08:58,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457762850] [2021-12-17 16:08:58,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:08:58,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 16:08:58,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:08:58,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 16:08:58,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-17 16:08:58,787 INFO L87 Difference]: Start difference. First operand 1360 states and 1775 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:08:59,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:08:59,876 INFO L93 Difference]: Finished difference Result 3691 states and 4925 transitions. [2021-12-17 16:08:59,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 16:08:59,877 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-12-17 16:08:59,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:08:59,883 INFO L225 Difference]: With dead ends: 3691 [2021-12-17 16:08:59,884 INFO L226 Difference]: Without dead ends: 3477 [2021-12-17 16:08:59,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2021-12-17 16:08:59,886 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 2605 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2605 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:08:59,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2605 Valid, 2010 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:08:59,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3477 states. [2021-12-17 16:09:00,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3477 to 1309. [2021-12-17 16:09:00,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1309 states, 1308 states have (on average 1.3096330275229358) internal successors, (1713), 1308 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:00,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1713 transitions. [2021-12-17 16:09:00,085 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1713 transitions. Word has length 57 [2021-12-17 16:09:00,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:09:00,085 INFO L470 AbstractCegarLoop]: Abstraction has 1309 states and 1713 transitions. [2021-12-17 16:09:00,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:00,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1713 transitions. [2021-12-17 16:09:00,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 16:09:00,088 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:09:00,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:09:00,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 16:09:00,088 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:09:00,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:09:00,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2109512119, now seen corresponding path program 1 times [2021-12-17 16:09:00,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:09:00,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76377706] [2021-12-17 16:09:00,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:09:00,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:09:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:09:00,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:09:00,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:09:00,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76377706] [2021-12-17 16:09:00,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76377706] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:09:00,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:09:00,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 16:09:00,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274197115] [2021-12-17 16:09:00,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:09:00,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:09:00,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:09:00,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:09:00,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:09:00,135 INFO L87 Difference]: Start difference. First operand 1309 states and 1713 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:00,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:09:00,566 INFO L93 Difference]: Finished difference Result 3040 states and 4113 transitions. [2021-12-17 16:09:00,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:09:00,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-17 16:09:00,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:09:00,571 INFO L225 Difference]: With dead ends: 3040 [2021-12-17 16:09:00,572 INFO L226 Difference]: Without dead ends: 2306 [2021-12-17 16:09:00,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:09:00,574 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 966 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:09:00,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [966 Valid, 589 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:09:00,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2021-12-17 16:09:00,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 1981. [2021-12-17 16:09:00,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1981 states, 1980 states have (on average 1.3156565656565657) internal successors, (2605), 1980 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:00,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 2605 transitions. [2021-12-17 16:09:00,915 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 2605 transitions. Word has length 66 [2021-12-17 16:09:00,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:09:00,915 INFO L470 AbstractCegarLoop]: Abstraction has 1981 states and 2605 transitions. [2021-12-17 16:09:00,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:00,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 2605 transitions. [2021-12-17 16:09:00,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-17 16:09:00,918 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:09:00,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:09:00,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 16:09:00,919 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:09:00,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:09:00,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1089617976, now seen corresponding path program 1 times [2021-12-17 16:09:00,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:09:00,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607036682] [2021-12-17 16:09:00,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:09:00,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:09:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:09:00,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:09:00,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:09:00,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607036682] [2021-12-17 16:09:00,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607036682] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:09:00,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:09:00,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 16:09:00,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743215595] [2021-12-17 16:09:00,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:09:00,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:09:00,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:09:00,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:09:00,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:09:00,972 INFO L87 Difference]: Start difference. First operand 1981 states and 2605 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:01,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:09:01,278 INFO L93 Difference]: Finished difference Result 1987 states and 2608 transitions. [2021-12-17 16:09:01,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:09:01,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-17 16:09:01,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:09:01,281 INFO L225 Difference]: With dead ends: 1987 [2021-12-17 16:09:01,281 INFO L226 Difference]: Without dead ends: 1764 [2021-12-17 16:09:01,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:09:01,283 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 706 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:09:01,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 621 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:09:01,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2021-12-17 16:09:01,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1760. [2021-12-17 16:09:01,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1759 states have (on average 1.3200682205798748) internal successors, (2322), 1759 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:01,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2322 transitions. [2021-12-17 16:09:01,603 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2322 transitions. Word has length 67 [2021-12-17 16:09:01,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:09:01,604 INFO L470 AbstractCegarLoop]: Abstraction has 1760 states and 2322 transitions. [2021-12-17 16:09:01,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:01,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2322 transitions. [2021-12-17 16:09:01,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-17 16:09:01,607 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:09:01,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:09:01,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 16:09:01,608 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:09:01,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:09:01,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1950278783, now seen corresponding path program 1 times [2021-12-17 16:09:01,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:09:01,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901800914] [2021-12-17 16:09:01,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:09:01,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:09:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:09:01,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:09:01,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:09:01,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901800914] [2021-12-17 16:09:01,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901800914] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:09:01,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:09:01,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:09:01,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401843636] [2021-12-17 16:09:01,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:09:01,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:09:01,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:09:01,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:09:01,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:09:01,653 INFO L87 Difference]: Start difference. First operand 1760 states and 2322 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:02,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:09:02,039 INFO L93 Difference]: Finished difference Result 4016 states and 5396 transitions. [2021-12-17 16:09:02,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:09:02,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-17 16:09:02,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:09:02,045 INFO L225 Difference]: With dead ends: 4016 [2021-12-17 16:09:02,046 INFO L226 Difference]: Without dead ends: 2722 [2021-12-17 16:09:02,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:09:02,048 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 104 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:09:02,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 520 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:09:02,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2722 states. [2021-12-17 16:09:02,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2722 to 2592. [2021-12-17 16:09:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2592 states, 2591 states have (on average 1.3207255885758395) internal successors, (3422), 2591 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:02,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 3422 transitions. [2021-12-17 16:09:02,365 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 3422 transitions. Word has length 68 [2021-12-17 16:09:02,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:09:02,365 INFO L470 AbstractCegarLoop]: Abstraction has 2592 states and 3422 transitions. [2021-12-17 16:09:02,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:02,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 3422 transitions. [2021-12-17 16:09:02,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-17 16:09:02,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:09:02,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:09:02,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 16:09:02,368 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:09:02,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:09:02,369 INFO L85 PathProgramCache]: Analyzing trace with hash 427404410, now seen corresponding path program 1 times [2021-12-17 16:09:02,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:09:02,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571300079] [2021-12-17 16:09:02,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:09:02,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:09:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:09:02,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:09:02,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:09:02,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571300079] [2021-12-17 16:09:02,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571300079] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:09:02,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:09:02,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:09:02,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630333048] [2021-12-17 16:09:02,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:09:02,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:09:02,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:09:02,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:09:02,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:09:02,424 INFO L87 Difference]: Start difference. First operand 2592 states and 3422 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:03,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:09:03,092 INFO L93 Difference]: Finished difference Result 6604 states and 8876 transitions. [2021-12-17 16:09:03,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:09:03,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-17 16:09:03,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:09:03,099 INFO L225 Difference]: With dead ends: 6604 [2021-12-17 16:09:03,099 INFO L226 Difference]: Without dead ends: 4498 [2021-12-17 16:09:03,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:09:03,103 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 94 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:09:03,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 507 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:09:03,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4498 states. [2021-12-17 16:09:03,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4498 to 4128. [2021-12-17 16:09:03,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4128 states, 4127 states have (on average 1.3249333656409015) internal successors, (5468), 4127 states have internal predecessors, (5468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:03,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4128 states to 4128 states and 5468 transitions. [2021-12-17 16:09:03,742 INFO L78 Accepts]: Start accepts. Automaton has 4128 states and 5468 transitions. Word has length 68 [2021-12-17 16:09:03,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:09:03,742 INFO L470 AbstractCegarLoop]: Abstraction has 4128 states and 5468 transitions. [2021-12-17 16:09:03,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:03,742 INFO L276 IsEmpty]: Start isEmpty. Operand 4128 states and 5468 transitions. [2021-12-17 16:09:03,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-17 16:09:03,744 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:09:03,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:09:03,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 16:09:03,744 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:09:03,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:09:03,745 INFO L85 PathProgramCache]: Analyzing trace with hash -2114357008, now seen corresponding path program 1 times [2021-12-17 16:09:03,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:09:03,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27182599] [2021-12-17 16:09:03,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:09:03,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:09:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:09:03,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:09:03,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:09:03,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27182599] [2021-12-17 16:09:03,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27182599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:09:03,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:09:03,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:09:03,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589016987] [2021-12-17 16:09:03,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:09:03,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:09:03,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:09:03,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:09:03,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:09:03,795 INFO L87 Difference]: Start difference. First operand 4128 states and 5468 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:04,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:09:04,833 INFO L93 Difference]: Finished difference Result 11012 states and 14710 transitions. [2021-12-17 16:09:04,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:09:04,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-12-17 16:09:04,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:09:04,844 INFO L225 Difference]: With dead ends: 11012 [2021-12-17 16:09:04,845 INFO L226 Difference]: Without dead ends: 7370 [2021-12-17 16:09:04,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:09:04,851 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 81 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:09:04,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 491 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:09:04,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7370 states. [2021-12-17 16:09:05,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7370 to 6760. [2021-12-17 16:09:05,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6760 states, 6759 states have (on average 1.3197218523450214) internal successors, (8920), 6759 states have internal predecessors, (8920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:05,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6760 states to 6760 states and 8920 transitions. [2021-12-17 16:09:05,911 INFO L78 Accepts]: Start accepts. Automaton has 6760 states and 8920 transitions. Word has length 70 [2021-12-17 16:09:05,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:09:05,912 INFO L470 AbstractCegarLoop]: Abstraction has 6760 states and 8920 transitions. [2021-12-17 16:09:05,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:05,912 INFO L276 IsEmpty]: Start isEmpty. Operand 6760 states and 8920 transitions. [2021-12-17 16:09:05,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-17 16:09:05,914 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:09:05,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:09:05,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 16:09:05,915 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:09:05,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:09:05,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2105959165, now seen corresponding path program 1 times [2021-12-17 16:09:05,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:09:05,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938660440] [2021-12-17 16:09:05,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:09:05,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:09:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:09:05,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:09:05,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:09:05,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938660440] [2021-12-17 16:09:05,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938660440] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:09:05,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:09:05,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:09:05,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649533681] [2021-12-17 16:09:05,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:09:05,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:09:05,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:09:05,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:09:05,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:09:05,979 INFO L87 Difference]: Start difference. First operand 6760 states and 8920 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:08,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:09:08,301 INFO L93 Difference]: Finished difference Result 14374 states and 18731 transitions. [2021-12-17 16:09:08,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 16:09:08,302 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-12-17 16:09:08,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:09:08,322 INFO L225 Difference]: With dead ends: 14374 [2021-12-17 16:09:08,322 INFO L226 Difference]: Without dead ends: 14372 [2021-12-17 16:09:08,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:09:08,327 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 311 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:09:08,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 1214 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:09:08,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14372 states. [2021-12-17 16:09:09,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14372 to 7432. [2021-12-17 16:09:09,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7432 states, 7431 states have (on average 1.290808774054636) internal successors, (9592), 7431 states have internal predecessors, (9592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:09,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7432 states to 7432 states and 9592 transitions. [2021-12-17 16:09:09,714 INFO L78 Accepts]: Start accepts. Automaton has 7432 states and 9592 transitions. Word has length 72 [2021-12-17 16:09:09,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:09:09,714 INFO L470 AbstractCegarLoop]: Abstraction has 7432 states and 9592 transitions. [2021-12-17 16:09:09,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:09,715 INFO L276 IsEmpty]: Start isEmpty. Operand 7432 states and 9592 transitions. [2021-12-17 16:09:09,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-17 16:09:09,717 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:09:09,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:09:09,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 16:09:09,717 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:09:09,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:09:09,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1422452613, now seen corresponding path program 1 times [2021-12-17 16:09:09,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:09:09,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393760401] [2021-12-17 16:09:09,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:09:09,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:09:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:09:09,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:09:09,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:09:09,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393760401] [2021-12-17 16:09:09,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393760401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:09:09,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:09:09,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:09:09,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70779000] [2021-12-17 16:09:09,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:09:09,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:09:09,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:09:09,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:09:09,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:09:09,792 INFO L87 Difference]: Start difference. First operand 7432 states and 9592 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:11,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:09:11,530 INFO L93 Difference]: Finished difference Result 17812 states and 22978 transitions. [2021-12-17 16:09:11,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:09:11,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-12-17 16:09:11,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:09:11,545 INFO L225 Difference]: With dead ends: 17812 [2021-12-17 16:09:11,545 INFO L226 Difference]: Without dead ends: 10866 [2021-12-17 16:09:11,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:09:11,552 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 176 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:09:11,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 353 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:09:11,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10866 states. [2021-12-17 16:09:13,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10866 to 10864. [2021-12-17 16:09:13,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10864 states, 10863 states have (on average 1.2718401914756512) internal successors, (13816), 10863 states have internal predecessors, (13816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:13,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10864 states to 10864 states and 13816 transitions. [2021-12-17 16:09:13,296 INFO L78 Accepts]: Start accepts. Automaton has 10864 states and 13816 transitions. Word has length 73 [2021-12-17 16:09:13,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:09:13,297 INFO L470 AbstractCegarLoop]: Abstraction has 10864 states and 13816 transitions. [2021-12-17 16:09:13,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:13,297 INFO L276 IsEmpty]: Start isEmpty. Operand 10864 states and 13816 transitions. [2021-12-17 16:09:13,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-17 16:09:13,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:09:13,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:09:13,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 16:09:13,299 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:09:13,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:09:13,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1415466240, now seen corresponding path program 1 times [2021-12-17 16:09:13,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:09:13,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66155496] [2021-12-17 16:09:13,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:09:13,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:09:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:09:13,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:09:13,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:09:13,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66155496] [2021-12-17 16:09:13,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66155496] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:09:13,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:09:13,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 16:09:13,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602200876] [2021-12-17 16:09:13,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:09:13,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:09:13,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:09:13,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:09:13,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:09:13,355 INFO L87 Difference]: Start difference. First operand 10864 states and 13816 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:15,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:09:15,815 INFO L93 Difference]: Finished difference Result 16004 states and 20492 transitions. [2021-12-17 16:09:15,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:09:15,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-12-17 16:09:15,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:09:15,833 INFO L225 Difference]: With dead ends: 16004 [2021-12-17 16:09:15,833 INFO L226 Difference]: Without dead ends: 13638 [2021-12-17 16:09:15,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:09:15,839 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 580 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:09:15,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 738 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:09:15,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13638 states. [2021-12-17 16:09:17,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13638 to 12414. [2021-12-17 16:09:17,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12414 states, 12413 states have (on average 1.269636671231773) internal successors, (15760), 12413 states have internal predecessors, (15760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:17,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12414 states to 12414 states and 15760 transitions. [2021-12-17 16:09:17,814 INFO L78 Accepts]: Start accepts. Automaton has 12414 states and 15760 transitions. Word has length 74 [2021-12-17 16:09:17,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:09:17,814 INFO L470 AbstractCegarLoop]: Abstraction has 12414 states and 15760 transitions. [2021-12-17 16:09:17,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:17,815 INFO L276 IsEmpty]: Start isEmpty. Operand 12414 states and 15760 transitions. [2021-12-17 16:09:17,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-17 16:09:17,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:09:17,820 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:09:17,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-17 16:09:17,820 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:09:17,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:09:17,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1725210313, now seen corresponding path program 1 times [2021-12-17 16:09:17,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:09:17,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805365524] [2021-12-17 16:09:17,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:09:17,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:09:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:09:17,929 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-17 16:09:17,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:09:17,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805365524] [2021-12-17 16:09:17,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805365524] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:09:17,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:09:17,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:09:17,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665353514] [2021-12-17 16:09:17,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:09:17,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:09:17,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:09:17,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:09:17,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:09:17,931 INFO L87 Difference]: Start difference. First operand 12414 states and 15760 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:23,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:09:23,732 INFO L93 Difference]: Finished difference Result 37054 states and 46932 transitions. [2021-12-17 16:09:23,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:09:23,732 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-12-17 16:09:23,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:09:23,775 INFO L225 Difference]: With dead ends: 37054 [2021-12-17 16:09:23,775 INFO L226 Difference]: Without dead ends: 31812 [2021-12-17 16:09:23,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:09:23,789 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 1411 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1411 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:09:23,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1411 Valid, 1096 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:09:23,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31812 states. [2021-12-17 16:09:25,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31812 to 12390. [2021-12-17 16:09:25,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12390 states, 12389 states have (on average 1.2697554282024377) internal successors, (15731), 12389 states have internal predecessors, (15731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:25,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12390 states to 12390 states and 15731 transitions. [2021-12-17 16:09:25,946 INFO L78 Accepts]: Start accepts. Automaton has 12390 states and 15731 transitions. Word has length 92 [2021-12-17 16:09:25,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:09:25,946 INFO L470 AbstractCegarLoop]: Abstraction has 12390 states and 15731 transitions. [2021-12-17 16:09:25,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:25,946 INFO L276 IsEmpty]: Start isEmpty. Operand 12390 states and 15731 transitions. [2021-12-17 16:09:25,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-17 16:09:25,950 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:09:25,950 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:09:25,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-17 16:09:25,950 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:09:25,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:09:25,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1339395570, now seen corresponding path program 1 times [2021-12-17 16:09:25,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:09:25,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347497656] [2021-12-17 16:09:25,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:09:25,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:09:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:09:26,110 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:09:26,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:09:26,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347497656] [2021-12-17 16:09:26,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347497656] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:09:26,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:09:26,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 16:09:26,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078544661] [2021-12-17 16:09:26,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:09:26,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 16:09:26,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:09:26,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 16:09:26,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 16:09:26,113 INFO L87 Difference]: Start difference. First operand 12390 states and 15731 transitions. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:33,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:09:33,068 INFO L93 Difference]: Finished difference Result 41027 states and 51606 transitions. [2021-12-17 16:09:33,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 16:09:33,068 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-17 16:09:33,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:09:33,113 INFO L225 Difference]: With dead ends: 41027 [2021-12-17 16:09:33,114 INFO L226 Difference]: Without dead ends: 34963 [2021-12-17 16:09:33,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=250, Invalid=680, Unknown=0, NotChecked=0, Total=930 [2021-12-17 16:09:33,130 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 1816 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1816 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:09:33,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1816 Valid, 1213 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 16:09:33,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34963 states. [2021-12-17 16:09:36,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34963 to 19318. [2021-12-17 16:09:36,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19318 states, 19317 states have (on average 1.2683128850235543) internal successors, (24500), 19317 states have internal predecessors, (24500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:36,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19318 states to 19318 states and 24500 transitions. [2021-12-17 16:09:36,676 INFO L78 Accepts]: Start accepts. Automaton has 19318 states and 24500 transitions. Word has length 93 [2021-12-17 16:09:36,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:09:36,677 INFO L470 AbstractCegarLoop]: Abstraction has 19318 states and 24500 transitions. [2021-12-17 16:09:36,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:09:36,677 INFO L276 IsEmpty]: Start isEmpty. Operand 19318 states and 24500 transitions. [2021-12-17 16:09:36,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-17 16:09:36,682 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:09:36,682 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:09:36,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-17 16:09:36,683 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-17 16:09:36,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:09:36,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1289899464, now seen corresponding path program 1 times [2021-12-17 16:09:36,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:09:36,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046889317] [2021-12-17 16:09:36,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:09:36,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:09:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:09:36,810 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:09:36,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:09:36,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046889317] [2021-12-17 16:09:36,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046889317] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 16:09:36,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051536475] [2021-12-17 16:09:36,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:09:36,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 16:09:36,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:09:36,812 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 16:09:36,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 16:09:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:09:36,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-17 16:09:36,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 16:09:39,192 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:09:39,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 16:09:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:09:40,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051536475] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 16:09:40,315 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 16:09:40,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2021-12-17 16:09:40,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684966381] [2021-12-17 16:09:40,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 16:09:40,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-17 16:09:40,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:09:40,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-17 16:09:40,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2021-12-17 16:09:40,317 INFO L87 Difference]: Start difference. First operand 19318 states and 24500 transitions. Second operand has 30 states, 30 states have (on average 8.266666666666667) internal successors, (248), 29 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:10:37,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:10:37,458 INFO L93 Difference]: Finished difference Result 178114 states and 221935 transitions. [2021-12-17 16:10:37,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 274 states. [2021-12-17 16:10:37,459 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.266666666666667) internal successors, (248), 29 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-12-17 16:10:37,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:10:37,809 INFO L225 Difference]: With dead ends: 178114 [2021-12-17 16:10:37,809 INFO L226 Difference]: Without dead ends: 170316 [2021-12-17 16:10:37,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39466 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=13965, Invalid=76937, Unknown=0, NotChecked=0, Total=90902 [2021-12-17 16:10:37,888 INFO L933 BasicCegarLoop]: 489 mSDtfsCounter, 6665 mSDsluCounter, 7396 mSDsCounter, 0 mSdLazyCounter, 6756 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6665 SdHoareTripleChecker+Valid, 7885 SdHoareTripleChecker+Invalid, 7203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 6756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:10:37,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6665 Valid, 7885 Invalid, 7203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 6756 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-12-17 16:10:38,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170316 states.