./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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.3.1.ufo.UNBOUNDED.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 34aba2e0444cf7168338399e1c016871ad9a3305ff2dee9e611b86f3cad834b5 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 01:22:07,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 01:22:07,766 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 01:22:07,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 01:22:07,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 01:22:07,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 01:22:07,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 01:22:07,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 01:22:07,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 01:22:07,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 01:22:07,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 01:22:07,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 01:22:07,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 01:22:07,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 01:22:07,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 01:22:07,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 01:22:07,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 01:22:07,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 01:22:07,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 01:22:07,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 01:22:07,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 01:22:07,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 01:22:07,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 01:22:07,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 01:22:07,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 01:22:07,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 01:22:07,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 01:22:07,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 01:22:07,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 01:22:07,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 01:22:07,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 01:22:07,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 01:22:07,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 01:22:07,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 01:22:07,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 01:22:07,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 01:22:07,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 01:22:07,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 01:22:07,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 01:22:07,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 01:22:07,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 01:22:07,846 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 01:22:07,868 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 01:22:07,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 01:22:07,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 01:22:07,871 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 01:22:07,871 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 01:22:07,872 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 01:22:07,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 01:22:07,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 01:22:07,873 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 01:22:07,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 01:22:07,873 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 01:22:07,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 01:22:07,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 01:22:07,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 01:22:07,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 01:22:07,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 01:22:07,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 01:22:07,874 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 01:22:07,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 01:22:07,875 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 01:22:07,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 01:22:07,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 01:22:07,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 01:22:07,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 01:22:07,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:22:07,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 01:22:07,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 01:22:07,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 01:22:07,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 01:22:07,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 01:22:07,876 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 01:22:07,877 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 01:22:07,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 01:22:07,877 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34aba2e0444cf7168338399e1c016871ad9a3305ff2dee9e611b86f3cad834b5 [2021-12-28 01:22:08,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 01:22:08,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 01:22:08,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 01:22:08,267 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 01:22:08,268 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 01:22:08,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-28 01:22:08,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c4914869/efdb372c6a5546569774af71b27ceb35/FLAG3c4dea697 [2021-12-28 01:22:08,892 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 01:22:08,892 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-28 01:22:08,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c4914869/efdb372c6a5546569774af71b27ceb35/FLAG3c4dea697 [2021-12-28 01:22:09,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c4914869/efdb372c6a5546569774af71b27ceb35 [2021-12-28 01:22:09,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 01:22:09,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 01:22:09,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 01:22:09,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 01:22:09,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 01:22:09,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:22:09" (1/1) ... [2021-12-28 01:22:09,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a29cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:09, skipping insertion in model container [2021-12-28 01:22:09,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 01:22:09" (1/1) ... [2021-12-28 01:22:09,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 01:22:09,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 01:22:09,429 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8127,8140] [2021-12-28 01:22:09,469 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14997,15010] [2021-12-28 01:22:09,497 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17084,17097] [2021-12-28 01:22:09,501 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18108,18121] [2021-12-28 01:22:09,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:22:09,596 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 01:22:09,653 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8127,8140] [2021-12-28 01:22:09,662 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14997,15010] [2021-12-28 01:22:09,666 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17084,17097] [2021-12-28 01:22:09,668 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18108,18121] [2021-12-28 01:22:09,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 01:22:09,726 INFO L208 MainTranslator]: Completed translation [2021-12-28 01:22:09,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:09 WrapperNode [2021-12-28 01:22:09,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 01:22:09,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 01:22:09,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 01:22:09,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 01:22:09,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:09" (1/1) ... [2021-12-28 01:22:09,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:09" (1/1) ... [2021-12-28 01:22:09,801 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2418 [2021-12-28 01:22:09,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 01:22:09,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 01:22:09,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 01:22:09,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 01:22:09,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:09" (1/1) ... [2021-12-28 01:22:09,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:09" (1/1) ... [2021-12-28 01:22:09,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:09" (1/1) ... [2021-12-28 01:22:09,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:09" (1/1) ... [2021-12-28 01:22:09,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:09" (1/1) ... [2021-12-28 01:22:09,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:09" (1/1) ... [2021-12-28 01:22:09,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:09" (1/1) ... [2021-12-28 01:22:09,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 01:22:09,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 01:22:09,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 01:22:09,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 01:22:09,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:09" (1/1) ... [2021-12-28 01:22:09,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 01:22:09,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 01:22:09,871 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) [2021-12-28 01:22:09,890 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 [2021-12-28 01:22:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 01:22:09,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 01:22:09,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 01:22:09,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 01:22:10,018 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 01:22:10,019 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 01:22:10,792 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 01:22:10,800 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 01:22:10,801 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 01:22:10,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:22:10 BoogieIcfgContainer [2021-12-28 01:22:10,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 01:22:10,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 01:22:10,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 01:22:10,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 01:22:10,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 01:22:09" (1/3) ... [2021-12-28 01:22:10,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6edf0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:22:10, skipping insertion in model container [2021-12-28 01:22:10,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 01:22:09" (2/3) ... [2021-12-28 01:22:10,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6edf0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 01:22:10, skipping insertion in model container [2021-12-28 01:22:10,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 01:22:10" (3/3) ... [2021-12-28 01:22:10,808 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-12-28 01:22:10,811 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 01:22:10,811 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-28 01:22:10,843 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 01:22:10,848 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 [2021-12-28 01:22:10,848 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-28 01:22:10,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 456 states, 451 states have (on average 1.8492239467849223) internal successors, (834), 455 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:10,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-28 01:22:10,883 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:10,884 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] [2021-12-28 01:22:10,884 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)] === [2021-12-28 01:22:10,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:10,888 INFO L85 PathProgramCache]: Analyzing trace with hash 26036561, now seen corresponding path program 1 times [2021-12-28 01:22:10,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:10,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441608856] [2021-12-28 01:22:10,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:10,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:11,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:11,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:11,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441608856] [2021-12-28 01:22:11,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441608856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:11,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:11,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:22:11,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777965033] [2021-12-28 01:22:11,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:11,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:22:11,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:11,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:22:11,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:22:11,263 INFO L87 Difference]: Start difference. First operand has 456 states, 451 states have (on average 1.8492239467849223) internal successors, (834), 455 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 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) [2021-12-28 01:22:11,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:11,588 INFO L93 Difference]: Finished difference Result 834 states and 1473 transitions. [2021-12-28 01:22:11,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:22:11,590 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 [2021-12-28 01:22:11,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:11,599 INFO L225 Difference]: With dead ends: 834 [2021-12-28 01:22:11,599 INFO L226 Difference]: Without dead ends: 485 [2021-12-28 01:22:11,602 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 [2021-12-28 01:22:11,604 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 2286 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2286 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:11,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2286 Valid, 577 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 01:22:11,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2021-12-28 01:22:11,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 479. [2021-12-28 01:22:11,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 475 states have (on average 1.3747368421052633) internal successors, (653), 478 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:11,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 653 transitions. [2021-12-28 01:22:11,659 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 653 transitions. Word has length 50 [2021-12-28 01:22:11,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:11,660 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 653 transitions. [2021-12-28 01:22:11,660 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) [2021-12-28 01:22:11,660 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 653 transitions. [2021-12-28 01:22:11,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-28 01:22:11,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:11,662 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] [2021-12-28 01:22:11,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 01:22:11,663 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:11,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:11,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1543870192, now seen corresponding path program 1 times [2021-12-28 01:22:11,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:11,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321297589] [2021-12-28 01:22:11,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:11,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:11,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:11,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321297589] [2021-12-28 01:22:11,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321297589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:11,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:11,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:11,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730088023] [2021-12-28 01:22:11,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:11,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:11,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:11,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:11,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:11,726 INFO L87 Difference]: Start difference. First operand 479 states and 653 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2021-12-28 01:22:11,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:11,764 INFO L93 Difference]: Finished difference Result 940 states and 1338 transitions. [2021-12-28 01:22:11,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:22:11,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 [2021-12-28 01:22:11,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:11,767 INFO L225 Difference]: With dead ends: 940 [2021-12-28 01:22:11,767 INFO L226 Difference]: Without dead ends: 686 [2021-12-28 01:22:11,768 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 [2021-12-28 01:22:11,769 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 272 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:11,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 860 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:22:11,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-12-28 01:22:11,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 680. [2021-12-28 01:22:11,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 676 states have (on average 1.4068047337278107) internal successors, (951), 679 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:11,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 951 transitions. [2021-12-28 01:22:11,796 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 951 transitions. Word has length 51 [2021-12-28 01:22:11,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:11,797 INFO L470 AbstractCegarLoop]: Abstraction has 680 states and 951 transitions. [2021-12-28 01:22:11,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2021-12-28 01:22:11,797 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 951 transitions. [2021-12-28 01:22:11,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-28 01:22:11,798 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:11,798 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] [2021-12-28 01:22:11,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 01:22:11,799 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:11,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:11,799 INFO L85 PathProgramCache]: Analyzing trace with hash -359372662, now seen corresponding path program 1 times [2021-12-28 01:22:11,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:11,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765451346] [2021-12-28 01:22:11,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:11,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:11,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:11,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765451346] [2021-12-28 01:22:11,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765451346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:11,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:11,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:11,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254631006] [2021-12-28 01:22:11,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:11,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:11,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:11,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:11,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:11,839 INFO L87 Difference]: Start difference. First operand 680 states and 951 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2021-12-28 01:22:11,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:11,899 INFO L93 Difference]: Finished difference Result 1566 states and 2244 transitions. [2021-12-28 01:22:11,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:22:11,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 [2021-12-28 01:22:11,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:11,903 INFO L225 Difference]: With dead ends: 1566 [2021-12-28 01:22:11,903 INFO L226 Difference]: Without dead ends: 1101 [2021-12-28 01:22:11,904 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 [2021-12-28 01:22:11,904 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 366 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 936 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 [2021-12-28 01:22:11,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 936 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:22:11,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2021-12-28 01:22:11,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1091. [2021-12-28 01:22:11,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 1087 states have (on average 1.405703771849126) internal successors, (1528), 1090 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:11,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1528 transitions. [2021-12-28 01:22:11,942 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1528 transitions. Word has length 51 [2021-12-28 01:22:11,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:11,943 INFO L470 AbstractCegarLoop]: Abstraction has 1091 states and 1528 transitions. [2021-12-28 01:22:11,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2021-12-28 01:22:11,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1528 transitions. [2021-12-28 01:22:11,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-28 01:22:11,944 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:11,944 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] [2021-12-28 01:22:11,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 01:22:11,945 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)] === [2021-12-28 01:22:11,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:11,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1979749037, now seen corresponding path program 1 times [2021-12-28 01:22:11,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:11,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8219172] [2021-12-28 01:22:11,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:11,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:11,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:11,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:11,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8219172] [2021-12-28 01:22:11,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8219172] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:11,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:11,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:11,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989127248] [2021-12-28 01:22:11,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:11,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:11,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:11,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:11,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:11,983 INFO L87 Difference]: Start difference. First operand 1091 states and 1528 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2021-12-28 01:22:12,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:12,081 INFO L93 Difference]: Finished difference Result 2383 states and 3421 transitions. [2021-12-28 01:22:12,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:22:12,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 [2021-12-28 01:22:12,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:12,086 INFO L225 Difference]: With dead ends: 2383 [2021-12-28 01:22:12,087 INFO L226 Difference]: Without dead ends: 1722 [2021-12-28 01:22:12,088 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 [2021-12-28 01:22:12,089 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 265 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:12,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 928 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:22:12,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2021-12-28 01:22:12,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1715. [2021-12-28 01:22:12,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1711 states have (on average 1.4108708357685564) internal successors, (2414), 1714 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:12,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2414 transitions. [2021-12-28 01:22:12,167 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2414 transitions. Word has length 51 [2021-12-28 01:22:12,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:12,167 INFO L470 AbstractCegarLoop]: Abstraction has 1715 states and 2414 transitions. [2021-12-28 01:22:12,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2021-12-28 01:22:12,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2414 transitions. [2021-12-28 01:22:12,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-28 01:22:12,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:12,169 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] [2021-12-28 01:22:12,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 01:22:12,170 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:12,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:12,170 INFO L85 PathProgramCache]: Analyzing trace with hash -2124032919, now seen corresponding path program 1 times [2021-12-28 01:22:12,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:12,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080854491] [2021-12-28 01:22:12,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:12,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:12,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:12,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:12,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080854491] [2021-12-28 01:22:12,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080854491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:12,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:12,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:22:12,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794474296] [2021-12-28 01:22:12,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:12,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:22:12,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:12,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:22:12,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:22:12,228 INFO L87 Difference]: Start difference. First operand 1715 states and 2414 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) [2021-12-28 01:22:12,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:12,510 INFO L93 Difference]: Finished difference Result 3784 states and 5391 transitions. [2021-12-28 01:22:12,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:22:12,511 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 [2021-12-28 01:22:12,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:12,517 INFO L225 Difference]: With dead ends: 3784 [2021-12-28 01:22:12,517 INFO L226 Difference]: Without dead ends: 2240 [2021-12-28 01:22:12,518 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 [2021-12-28 01:22:12,519 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 1539 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:12,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1539 Valid, 371 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 01:22:12,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2021-12-28 01:22:12,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 2226. [2021-12-28 01:22:12,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2226 states, 2222 states have (on average 1.4185418541854184) internal successors, (3152), 2225 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:12,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2226 states to 2226 states and 3152 transitions. [2021-12-28 01:22:12,612 INFO L78 Accepts]: Start accepts. Automaton has 2226 states and 3152 transitions. Word has length 51 [2021-12-28 01:22:12,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:12,613 INFO L470 AbstractCegarLoop]: Abstraction has 2226 states and 3152 transitions. [2021-12-28 01:22:12,613 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) [2021-12-28 01:22:12,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states and 3152 transitions. [2021-12-28 01:22:12,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-28 01:22:12,614 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:12,615 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] [2021-12-28 01:22:12,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 01:22:12,615 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)] === [2021-12-28 01:22:12,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:12,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1035105163, now seen corresponding path program 1 times [2021-12-28 01:22:12,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:12,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671867667] [2021-12-28 01:22:12,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:12,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:12,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:12,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:12,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671867667] [2021-12-28 01:22:12,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671867667] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:12,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:12,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 01:22:12,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785495568] [2021-12-28 01:22:12,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:12,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:22:12,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:12,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:22:12,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:22:12,684 INFO L87 Difference]: Start difference. First operand 2226 states and 3152 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) [2021-12-28 01:22:13,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:13,023 INFO L93 Difference]: Finished difference Result 5039 states and 7185 transitions. [2021-12-28 01:22:13,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:22:13,026 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 [2021-12-28 01:22:13,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:13,035 INFO L225 Difference]: With dead ends: 5039 [2021-12-28 01:22:13,035 INFO L226 Difference]: Without dead ends: 2984 [2021-12-28 01:22:13,038 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 [2021-12-28 01:22:13,041 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 1382 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:13,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1382 Valid, 340 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 01:22:13,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2984 states. [2021-12-28 01:22:13,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 2965. [2021-12-28 01:22:13,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2965 states, 2961 states have (on average 1.414724755150287) internal successors, (4189), 2964 states have internal predecessors, (4189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:13,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 4189 transitions. [2021-12-28 01:22:13,204 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 4189 transitions. Word has length 52 [2021-12-28 01:22:13,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:13,204 INFO L470 AbstractCegarLoop]: Abstraction has 2965 states and 4189 transitions. [2021-12-28 01:22:13,204 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) [2021-12-28 01:22:13,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 4189 transitions. [2021-12-28 01:22:13,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-28 01:22:13,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:13,206 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] [2021-12-28 01:22:13,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 01:22:13,207 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:13,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:13,207 INFO L85 PathProgramCache]: Analyzing trace with hash 825819079, now seen corresponding path program 1 times [2021-12-28 01:22:13,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:13,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986630190] [2021-12-28 01:22:13,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:13,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:13,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:13,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:13,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986630190] [2021-12-28 01:22:13,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986630190] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:13,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:13,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:22:13,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319735409] [2021-12-28 01:22:13,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:13,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:22:13,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:13,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:22:13,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:22:13,261 INFO L87 Difference]: Start difference. First operand 2965 states and 4189 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) [2021-12-28 01:22:14,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:14,046 INFO L93 Difference]: Finished difference Result 9614 states and 13808 transitions. [2021-12-28 01:22:14,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 01:22:14,047 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 [2021-12-28 01:22:14,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:14,068 INFO L225 Difference]: With dead ends: 9614 [2021-12-28 01:22:14,069 INFO L226 Difference]: Without dead ends: 8311 [2021-12-28 01:22:14,071 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 [2021-12-28 01:22:14,072 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 2747 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2747 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:14,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2747 Valid, 604 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 01:22:14,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8311 states. [2021-12-28 01:22:14,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8311 to 2979. [2021-12-28 01:22:14,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2975 states have (on average 1.4141176470588235) internal successors, (4207), 2978 states have internal predecessors, (4207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:14,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 4207 transitions. [2021-12-28 01:22:14,316 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 4207 transitions. Word has length 53 [2021-12-28 01:22:14,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:14,316 INFO L470 AbstractCegarLoop]: Abstraction has 2979 states and 4207 transitions. [2021-12-28 01:22:14,316 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) [2021-12-28 01:22:14,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 4207 transitions. [2021-12-28 01:22:14,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-28 01:22:14,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:14,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:14,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 01:22:14,319 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:14,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:14,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1519774840, now seen corresponding path program 1 times [2021-12-28 01:22:14,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:14,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212308247] [2021-12-28 01:22:14,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:14,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:14,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:14,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212308247] [2021-12-28 01:22:14,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212308247] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:14,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:14,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:22:14,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773003021] [2021-12-28 01:22:14,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:14,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:22:14,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:14,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:22:14,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:22:14,373 INFO L87 Difference]: Start difference. First operand 2979 states and 4207 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) [2021-12-28 01:22:15,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:15,594 INFO L93 Difference]: Finished difference Result 10647 states and 15322 transitions. [2021-12-28 01:22:15,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 01:22:15,595 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 [2021-12-28 01:22:15,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:15,659 INFO L225 Difference]: With dead ends: 10647 [2021-12-28 01:22:15,659 INFO L226 Difference]: Without dead ends: 9535 [2021-12-28 01:22:15,664 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 [2021-12-28 01:22:15,664 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 2048 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:15,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2048 Valid, 765 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 01:22:15,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9535 states. [2021-12-28 01:22:15,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9535 to 3001. [2021-12-28 01:22:15,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3001 states, 2997 states have (on average 1.4140807474140809) internal successors, (4238), 3000 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:15,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 4238 transitions. [2021-12-28 01:22:15,920 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 4238 transitions. Word has length 53 [2021-12-28 01:22:15,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:15,920 INFO L470 AbstractCegarLoop]: Abstraction has 3001 states and 4238 transitions. [2021-12-28 01:22:15,920 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) [2021-12-28 01:22:15,921 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 4238 transitions. [2021-12-28 01:22:15,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-28 01:22:15,922 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:15,922 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] [2021-12-28 01:22:15,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 01:22:15,923 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:15,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:15,923 INFO L85 PathProgramCache]: Analyzing trace with hash -461927258, now seen corresponding path program 1 times [2021-12-28 01:22:15,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:15,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095560146] [2021-12-28 01:22:15,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:15,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:16,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:16,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:16,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095560146] [2021-12-28 01:22:16,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095560146] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:16,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:16,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:22:16,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132633148] [2021-12-28 01:22:16,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:16,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 01:22:16,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:16,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 01:22:16,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 01:22:16,001 INFO L87 Difference]: Start difference. First operand 3001 states and 4238 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) [2021-12-28 01:22:17,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:17,656 INFO L93 Difference]: Finished difference Result 12469 states and 17906 transitions. [2021-12-28 01:22:17,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 01:22:17,656 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 [2021-12-28 01:22:17,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:17,675 INFO L225 Difference]: With dead ends: 12469 [2021-12-28 01:22:17,675 INFO L226 Difference]: Without dead ends: 11501 [2021-12-28 01:22:17,680 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 [2021-12-28 01:22:17,680 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 3205 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3205 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:17,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3205 Valid, 658 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 01:22:17,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11501 states. [2021-12-28 01:22:18,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11501 to 3035. [2021-12-28 01:22:18,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3035 states, 3031 states have (on average 1.4127350709336852) internal successors, (4282), 3034 states have internal predecessors, (4282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:18,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 4282 transitions. [2021-12-28 01:22:18,009 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 4282 transitions. Word has length 53 [2021-12-28 01:22:18,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:18,009 INFO L470 AbstractCegarLoop]: Abstraction has 3035 states and 4282 transitions. [2021-12-28 01:22:18,010 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) [2021-12-28 01:22:18,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 4282 transitions. [2021-12-28 01:22:18,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-28 01:22:18,011 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:18,011 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] [2021-12-28 01:22:18,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 01:22:18,012 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)] === [2021-12-28 01:22:18,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:18,012 INFO L85 PathProgramCache]: Analyzing trace with hash -719043471, now seen corresponding path program 1 times [2021-12-28 01:22:18,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:18,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953029806] [2021-12-28 01:22:18,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:18,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:18,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:18,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:18,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953029806] [2021-12-28 01:22:18,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953029806] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:18,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:18,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 01:22:18,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044599946] [2021-12-28 01:22:18,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:18,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 01:22:18,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:18,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 01:22:18,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-28 01:22:18,096 INFO L87 Difference]: Start difference. First operand 3035 states and 4282 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) [2021-12-28 01:22:19,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:19,042 INFO L93 Difference]: Finished difference Result 7469 states and 10748 transitions. [2021-12-28 01:22:19,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 01:22:19,043 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 [2021-12-28 01:22:19,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:19,051 INFO L225 Difference]: With dead ends: 7469 [2021-12-28 01:22:19,052 INFO L226 Difference]: Without dead ends: 5520 [2021-12-28 01:22:19,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-12-28 01:22:19,055 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 2467 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2467 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:19,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2467 Valid, 946 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 01:22:19,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5520 states. [2021-12-28 01:22:19,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5520 to 2945. [2021-12-28 01:22:19,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2945 states, 2941 states have (on average 1.4124447466848011) internal successors, (4154), 2944 states have internal predecessors, (4154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:19,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2945 states to 2945 states and 4154 transitions. [2021-12-28 01:22:19,348 INFO L78 Accepts]: Start accepts. Automaton has 2945 states and 4154 transitions. Word has length 54 [2021-12-28 01:22:19,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:19,348 INFO L470 AbstractCegarLoop]: Abstraction has 2945 states and 4154 transitions. [2021-12-28 01:22:19,348 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) [2021-12-28 01:22:19,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2945 states and 4154 transitions. [2021-12-28 01:22:19,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-28 01:22:19,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:19,350 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] [2021-12-28 01:22:19,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 01:22:19,350 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)] === [2021-12-28 01:22:19,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:19,351 INFO L85 PathProgramCache]: Analyzing trace with hash 465454059, now seen corresponding path program 1 times [2021-12-28 01:22:19,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:19,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702806977] [2021-12-28 01:22:19,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:19,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:19,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:19,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702806977] [2021-12-28 01:22:19,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702806977] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:19,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:19,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 01:22:19,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996345012] [2021-12-28 01:22:19,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:19,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 01:22:19,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:19,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 01:22:19,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 01:22:19,431 INFO L87 Difference]: Start difference. First operand 2945 states and 4154 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) [2021-12-28 01:22:20,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:20,859 INFO L93 Difference]: Finished difference Result 8199 states and 11783 transitions. [2021-12-28 01:22:20,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:22:20,860 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 [2021-12-28 01:22:20,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:20,870 INFO L225 Difference]: With dead ends: 8199 [2021-12-28 01:22:20,870 INFO L226 Difference]: Without dead ends: 6410 [2021-12-28 01:22:20,873 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 [2021-12-28 01:22:20,873 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 2036 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:20,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2036 Valid, 1491 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 01:22:20,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6410 states. [2021-12-28 01:22:21,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6410 to 2916. [2021-12-28 01:22:21,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2912 states have (on average 1.4124313186813187) internal successors, (4113), 2915 states have internal predecessors, (4113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:21,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4113 transitions. [2021-12-28 01:22:21,294 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4113 transitions. Word has length 54 [2021-12-28 01:22:21,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:21,295 INFO L470 AbstractCegarLoop]: Abstraction has 2916 states and 4113 transitions. [2021-12-28 01:22:21,295 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) [2021-12-28 01:22:21,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4113 transitions. [2021-12-28 01:22:21,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-28 01:22:21,297 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:21,297 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] [2021-12-28 01:22:21,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 01:22:21,297 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)] === [2021-12-28 01:22:21,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:21,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1085167472, now seen corresponding path program 1 times [2021-12-28 01:22:21,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:21,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739865656] [2021-12-28 01:22:21,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:21,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:21,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:21,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:21,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739865656] [2021-12-28 01:22:21,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739865656] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:21,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:21,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 01:22:21,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581621022] [2021-12-28 01:22:21,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:21,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 01:22:21,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:21,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 01:22:21,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-28 01:22:21,390 INFO L87 Difference]: Start difference. First operand 2916 states and 4113 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) [2021-12-28 01:22:22,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:22,795 INFO L93 Difference]: Finished difference Result 7120 states and 10242 transitions. [2021-12-28 01:22:22,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:22:22,795 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 [2021-12-28 01:22:22,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:22,806 INFO L225 Difference]: With dead ends: 7120 [2021-12-28 01:22:22,806 INFO L226 Difference]: Without dead ends: 7115 [2021-12-28 01:22:22,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-28 01:22:22,808 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 1797 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:22,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1797 Valid, 1233 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 01:22:22,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7115 states. [2021-12-28 01:22:23,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7115 to 2916. [2021-12-28 01:22:23,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2912 states have (on average 1.4117445054945055) internal successors, (4111), 2915 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:23,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4111 transitions. [2021-12-28 01:22:23,219 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4111 transitions. Word has length 54 [2021-12-28 01:22:23,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:23,220 INFO L470 AbstractCegarLoop]: Abstraction has 2916 states and 4111 transitions. [2021-12-28 01:22:23,220 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) [2021-12-28 01:22:23,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4111 transitions. [2021-12-28 01:22:23,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-28 01:22:23,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:23,226 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] [2021-12-28 01:22:23,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 01:22:23,226 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:23,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:23,226 INFO L85 PathProgramCache]: Analyzing trace with hash -344500623, now seen corresponding path program 1 times [2021-12-28 01:22:23,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:23,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284996366] [2021-12-28 01:22:23,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:23,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:23,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:23,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:23,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284996366] [2021-12-28 01:22:23,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284996366] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:23,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:23,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:23,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747702860] [2021-12-28 01:22:23,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:23,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:23,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:23,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:23,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:23,266 INFO L87 Difference]: Start difference. First operand 2916 states and 4111 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) [2021-12-28 01:22:23,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:23,609 INFO L93 Difference]: Finished difference Result 4186 states and 5952 transitions. [2021-12-28 01:22:23,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:22:23,609 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 [2021-12-28 01:22:23,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:23,614 INFO L225 Difference]: With dead ends: 4186 [2021-12-28 01:22:23,614 INFO L226 Difference]: Without dead ends: 2923 [2021-12-28 01:22:23,616 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 [2021-12-28 01:22:23,617 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 226 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 804 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 [2021-12-28 01:22:23,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 804 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:22:23,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2021-12-28 01:22:23,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2916. [2021-12-28 01:22:23,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2912 states have (on average 1.3980082417582418) internal successors, (4071), 2915 states have internal predecessors, (4071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:23,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4071 transitions. [2021-12-28 01:22:23,963 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4071 transitions. Word has length 55 [2021-12-28 01:22:23,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:23,963 INFO L470 AbstractCegarLoop]: Abstraction has 2916 states and 4071 transitions. [2021-12-28 01:22:23,964 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) [2021-12-28 01:22:23,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4071 transitions. [2021-12-28 01:22:23,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-28 01:22:23,965 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:23,966 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] [2021-12-28 01:22:23,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 01:22:23,966 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:23,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:23,966 INFO L85 PathProgramCache]: Analyzing trace with hash 29096373, now seen corresponding path program 1 times [2021-12-28 01:22:23,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:23,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479605580] [2021-12-28 01:22:23,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:23,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:23,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:23,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:23,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479605580] [2021-12-28 01:22:23,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479605580] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:23,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:23,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:23,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375213907] [2021-12-28 01:22:23,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:23,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:23,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:23,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:23,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:23,995 INFO L87 Difference]: Start difference. First operand 2916 states and 4071 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) [2021-12-28 01:22:24,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:24,379 INFO L93 Difference]: Finished difference Result 4255 states and 5988 transitions. [2021-12-28 01:22:24,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:22:24,379 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 [2021-12-28 01:22:24,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:24,383 INFO L225 Difference]: With dead ends: 4255 [2021-12-28 01:22:24,383 INFO L226 Difference]: Without dead ends: 2922 [2021-12-28 01:22:24,385 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 [2021-12-28 01:22:24,385 INFO L933 BasicCegarLoop]: 517 mSDtfsCounter, 242 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 805 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 [2021-12-28 01:22:24,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 805 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:22:24,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2021-12-28 01:22:24,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2916. [2021-12-28 01:22:24,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2912 states have (on average 1.3856456043956045) internal successors, (4035), 2915 states have internal predecessors, (4035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:24,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4035 transitions. [2021-12-28 01:22:24,721 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4035 transitions. Word has length 55 [2021-12-28 01:22:24,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:24,721 INFO L470 AbstractCegarLoop]: Abstraction has 2916 states and 4035 transitions. [2021-12-28 01:22:24,721 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) [2021-12-28 01:22:24,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4035 transitions. [2021-12-28 01:22:24,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-28 01:22:24,723 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:24,724 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] [2021-12-28 01:22:24,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 01:22:24,724 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:24,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:24,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1813019801, now seen corresponding path program 1 times [2021-12-28 01:22:24,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:24,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481867596] [2021-12-28 01:22:24,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:24,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:24,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:24,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:24,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481867596] [2021-12-28 01:22:24,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481867596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:24,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:24,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:24,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402629983] [2021-12-28 01:22:24,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:24,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:24,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:24,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:24,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:24,749 INFO L87 Difference]: Start difference. First operand 2916 states and 4035 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) [2021-12-28 01:22:25,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:25,185 INFO L93 Difference]: Finished difference Result 3997 states and 5541 transitions. [2021-12-28 01:22:25,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:22:25,185 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 [2021-12-28 01:22:25,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:25,189 INFO L225 Difference]: With dead ends: 3997 [2021-12-28 01:22:25,189 INFO L226 Difference]: Without dead ends: 2907 [2021-12-28 01:22:25,191 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 [2021-12-28 01:22:25,192 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 261 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 816 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 [2021-12-28 01:22:25,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 816 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:22:25,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2907 states. [2021-12-28 01:22:25,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2907 to 2901. [2021-12-28 01:22:25,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2901 states, 2897 states have (on average 1.3583016914049015) internal successors, (3935), 2900 states have internal predecessors, (3935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:25,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2901 states to 2901 states and 3935 transitions. [2021-12-28 01:22:25,655 INFO L78 Accepts]: Start accepts. Automaton has 2901 states and 3935 transitions. Word has length 55 [2021-12-28 01:22:25,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:25,656 INFO L470 AbstractCegarLoop]: Abstraction has 2901 states and 3935 transitions. [2021-12-28 01:22:25,656 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) [2021-12-28 01:22:25,656 INFO L276 IsEmpty]: Start isEmpty. Operand 2901 states and 3935 transitions. [2021-12-28 01:22:25,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-28 01:22:25,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:25,658 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] [2021-12-28 01:22:25,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 01:22:25,658 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:25,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:25,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1260356730, now seen corresponding path program 1 times [2021-12-28 01:22:25,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:25,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270861855] [2021-12-28 01:22:25,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:25,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:25,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:25,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:25,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270861855] [2021-12-28 01:22:25,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270861855] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:25,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:25,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:25,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144565748] [2021-12-28 01:22:25,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:25,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:25,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:25,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:25,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:25,684 INFO L87 Difference]: Start difference. First operand 2901 states and 3935 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:26,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:26,139 INFO L93 Difference]: Finished difference Result 4576 states and 6264 transitions. [2021-12-28 01:22:26,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:22:26,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-12-28 01:22:26,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:26,144 INFO L225 Difference]: With dead ends: 4576 [2021-12-28 01:22:26,145 INFO L226 Difference]: Without dead ends: 3319 [2021-12-28 01:22:26,147 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 [2021-12-28 01:22:26,147 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 326 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:26,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 524 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:22:26,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2021-12-28 01:22:26,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 2719. [2021-12-28 01:22:26,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2719 states, 2715 states have (on average 1.3624309392265193) internal successors, (3699), 2718 states have internal predecessors, (3699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:26,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 3699 transitions. [2021-12-28 01:22:26,516 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 3699 transitions. Word has length 56 [2021-12-28 01:22:26,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:26,516 INFO L470 AbstractCegarLoop]: Abstraction has 2719 states and 3699 transitions. [2021-12-28 01:22:26,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:26,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 3699 transitions. [2021-12-28 01:22:26,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-28 01:22:26,518 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:26,518 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] [2021-12-28 01:22:26,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 01:22:26,519 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:26,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:26,520 INFO L85 PathProgramCache]: Analyzing trace with hash -171160754, now seen corresponding path program 1 times [2021-12-28 01:22:26,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:26,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26967809] [2021-12-28 01:22:26,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:26,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:26,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:26,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:26,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26967809] [2021-12-28 01:22:26,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26967809] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:26,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:26,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:26,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107043999] [2021-12-28 01:22:26,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:26,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:26,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:26,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:26,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:26,594 INFO L87 Difference]: Start difference. First operand 2719 states and 3699 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) [2021-12-28 01:22:27,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:27,094 INFO L93 Difference]: Finished difference Result 4995 states and 6854 transitions. [2021-12-28 01:22:27,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:22:27,094 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 [2021-12-28 01:22:27,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:27,099 INFO L225 Difference]: With dead ends: 4995 [2021-12-28 01:22:27,099 INFO L226 Difference]: Without dead ends: 3334 [2021-12-28 01:22:27,101 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 [2021-12-28 01:22:27,111 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 302 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 462 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 [2021-12-28 01:22:27,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 462 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 01:22:27,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2021-12-28 01:22:27,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 2583. [2021-12-28 01:22:27,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 2579 states have (on average 1.3660333462582397) internal successors, (3523), 2582 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:27,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 3523 transitions. [2021-12-28 01:22:27,443 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 3523 transitions. Word has length 57 [2021-12-28 01:22:27,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:27,443 INFO L470 AbstractCegarLoop]: Abstraction has 2583 states and 3523 transitions. [2021-12-28 01:22:27,443 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) [2021-12-28 01:22:27,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 3523 transitions. [2021-12-28 01:22:27,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-28 01:22:27,445 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:27,445 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] [2021-12-28 01:22:27,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-28 01:22:27,446 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:27,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:27,446 INFO L85 PathProgramCache]: Analyzing trace with hash -544179575, now seen corresponding path program 1 times [2021-12-28 01:22:27,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:27,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070745057] [2021-12-28 01:22:27,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:27,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:27,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:27,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:27,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070745057] [2021-12-28 01:22:27,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070745057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:27,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:27,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 01:22:27,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643180184] [2021-12-28 01:22:27,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:27,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 01:22:27,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:27,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 01:22:27,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-28 01:22:27,661 INFO L87 Difference]: Start difference. First operand 2583 states and 3523 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 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) [2021-12-28 01:22:29,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:29,101 INFO L93 Difference]: Finished difference Result 4845 states and 6691 transitions. [2021-12-28 01:22:29,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-28 01:22:29,101 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 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 [2021-12-28 01:22:29,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:29,106 INFO L225 Difference]: With dead ends: 4845 [2021-12-28 01:22:29,106 INFO L226 Difference]: Without dead ends: 4439 [2021-12-28 01:22:29,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2021-12-28 01:22:29,108 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 2243 mSDsluCounter, 2987 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2243 SdHoareTripleChecker+Valid, 3516 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:29,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2243 Valid, 3516 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 01:22:29,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4439 states. [2021-12-28 01:22:29,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4439 to 2537. [2021-12-28 01:22:29,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 2534 states have (on average 1.3677979479084452) internal successors, (3466), 2536 states have internal predecessors, (3466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:29,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3466 transitions. [2021-12-28 01:22:29,519 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3466 transitions. Word has length 57 [2021-12-28 01:22:29,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:29,519 INFO L470 AbstractCegarLoop]: Abstraction has 2537 states and 3466 transitions. [2021-12-28 01:22:29,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 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) [2021-12-28 01:22:29,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3466 transitions. [2021-12-28 01:22:29,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-28 01:22:29,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:29,522 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] [2021-12-28 01:22:29,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-28 01:22:29,522 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:29,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:29,523 INFO L85 PathProgramCache]: Analyzing trace with hash 303331698, now seen corresponding path program 1 times [2021-12-28 01:22:29,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:29,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408657783] [2021-12-28 01:22:29,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:29,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:29,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:29,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:29,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408657783] [2021-12-28 01:22:29,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408657783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:29,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:29,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 01:22:29,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977107394] [2021-12-28 01:22:29,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:29,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 01:22:29,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:29,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 01:22:29,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-28 01:22:29,836 INFO L87 Difference]: Start difference. First operand 2537 states and 3466 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 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) [2021-12-28 01:22:31,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:31,481 INFO L93 Difference]: Finished difference Result 3774 states and 5198 transitions. [2021-12-28 01:22:31,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 01:22:31,482 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 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 [2021-12-28 01:22:31,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:31,486 INFO L225 Difference]: With dead ends: 3774 [2021-12-28 01:22:31,486 INFO L226 Difference]: Without dead ends: 3666 [2021-12-28 01:22:31,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-12-28 01:22:31,487 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 2260 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2260 SdHoareTripleChecker+Valid, 2716 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:31,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2260 Valid, 2716 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 01:22:31,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3666 states. [2021-12-28 01:22:31,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3666 to 2525. [2021-12-28 01:22:31,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2525 states, 2523 states have (on average 1.3682124455013873) internal successors, (3452), 2524 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:31,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2525 states to 2525 states and 3452 transitions. [2021-12-28 01:22:31,894 INFO L78 Accepts]: Start accepts. Automaton has 2525 states and 3452 transitions. Word has length 57 [2021-12-28 01:22:31,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:31,894 INFO L470 AbstractCegarLoop]: Abstraction has 2525 states and 3452 transitions. [2021-12-28 01:22:31,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 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) [2021-12-28 01:22:31,895 INFO L276 IsEmpty]: Start isEmpty. Operand 2525 states and 3452 transitions. [2021-12-28 01:22:31,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-28 01:22:31,896 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:31,896 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] [2021-12-28 01:22:31,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-28 01:22:31,897 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:31,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:31,897 INFO L85 PathProgramCache]: Analyzing trace with hash 839862953, now seen corresponding path program 1 times [2021-12-28 01:22:31,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:31,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647868936] [2021-12-28 01:22:31,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:31,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:32,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:32,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:32,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647868936] [2021-12-28 01:22:32,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647868936] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:32,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:32,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-28 01:22:32,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782617246] [2021-12-28 01:22:32,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:32,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-28 01:22:32,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:32,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-28 01:22:32,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-12-28 01:22:32,292 INFO L87 Difference]: Start difference. First operand 2525 states and 3452 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 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) [2021-12-28 01:22:34,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:34,522 INFO L93 Difference]: Finished difference Result 4038 states and 5554 transitions. [2021-12-28 01:22:34,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-28 01:22:34,524 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 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 [2021-12-28 01:22:34,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:34,529 INFO L225 Difference]: With dead ends: 4038 [2021-12-28 01:22:34,529 INFO L226 Difference]: Without dead ends: 4034 [2021-12-28 01:22:34,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=240, Invalid=950, Unknown=0, NotChecked=0, Total=1190 [2021-12-28 01:22:34,530 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 2296 mSDsluCounter, 4662 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2296 SdHoareTripleChecker+Valid, 5103 SdHoareTripleChecker+Invalid, 2334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:34,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2296 Valid, 5103 Invalid, 2334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 01:22:34,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4034 states. [2021-12-28 01:22:34,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4034 to 2532. [2021-12-28 01:22:34,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2532 states, 2530 states have (on average 1.3679841897233203) internal successors, (3461), 2531 states have internal predecessors, (3461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2532 states to 2532 states and 3461 transitions. [2021-12-28 01:22:34,927 INFO L78 Accepts]: Start accepts. Automaton has 2532 states and 3461 transitions. Word has length 57 [2021-12-28 01:22:34,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:34,927 INFO L470 AbstractCegarLoop]: Abstraction has 2532 states and 3461 transitions. [2021-12-28 01:22:34,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 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) [2021-12-28 01:22:34,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2532 states and 3461 transitions. [2021-12-28 01:22:34,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-28 01:22:34,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:34,929 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] [2021-12-28 01:22:34,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-28 01:22:34,930 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:34,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:34,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1630954478, now seen corresponding path program 1 times [2021-12-28 01:22:34,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:34,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461751996] [2021-12-28 01:22:34,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:34,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:34,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:34,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461751996] [2021-12-28 01:22:34,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461751996] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:34,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:34,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:34,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725528203] [2021-12-28 01:22:34,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:34,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:34,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:34,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:34,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:34,965 INFO L87 Difference]: Start difference. First operand 2532 states and 3461 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) [2021-12-28 01:22:35,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:35,523 INFO L93 Difference]: Finished difference Result 4699 states and 6475 transitions. [2021-12-28 01:22:35,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:22:35,524 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 [2021-12-28 01:22:35,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:35,527 INFO L225 Difference]: With dead ends: 4699 [2021-12-28 01:22:35,527 INFO L226 Difference]: Without dead ends: 3120 [2021-12-28 01:22:35,530 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 [2021-12-28 01:22:35,531 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 244 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:35,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 437 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:22:35,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2021-12-28 01:22:35,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 2440. [2021-12-28 01:22:35,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2440 states, 2438 states have (on average 1.3683347005742412) internal successors, (3336), 2439 states have internal predecessors, (3336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:35,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 3336 transitions. [2021-12-28 01:22:35,924 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 3336 transitions. Word has length 57 [2021-12-28 01:22:35,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:35,924 INFO L470 AbstractCegarLoop]: Abstraction has 2440 states and 3336 transitions. [2021-12-28 01:22:35,924 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) [2021-12-28 01:22:35,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 3336 transitions. [2021-12-28 01:22:35,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-28 01:22:35,926 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:35,926 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] [2021-12-28 01:22:35,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-28 01:22:35,926 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-12-28 01:22:35,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:35,927 INFO L85 PathProgramCache]: Analyzing trace with hash -684569228, now seen corresponding path program 1 times [2021-12-28 01:22:35,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:35,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159716417] [2021-12-28 01:22:35,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:35,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:36,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:36,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:36,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159716417] [2021-12-28 01:22:36,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159716417] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:36,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:36,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-28 01:22:36,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906329953] [2021-12-28 01:22:36,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:36,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-28 01:22:36,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:36,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-28 01:22:36,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-28 01:22:36,225 INFO L87 Difference]: Start difference. First operand 2440 states and 3336 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:38,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:38,261 INFO L93 Difference]: Finished difference Result 4184 states and 5767 transitions. [2021-12-28 01:22:38,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-28 01:22:38,262 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-12-28 01:22:38,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:38,266 INFO L225 Difference]: With dead ends: 4184 [2021-12-28 01:22:38,267 INFO L226 Difference]: Without dead ends: 4180 [2021-12-28 01:22:38,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=204, Invalid=726, Unknown=0, NotChecked=0, Total=930 [2021-12-28 01:22:38,268 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 1845 mSDsluCounter, 3269 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 3673 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:38,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1845 Valid, 3673 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 01:22:38,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4180 states. [2021-12-28 01:22:38,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4180 to 2429. [2021-12-28 01:22:38,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 2428 states have (on average 1.3686161449752883) internal successors, (3323), 2428 states have internal predecessors, (3323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:38,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 3323 transitions. [2021-12-28 01:22:38,683 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 3323 transitions. Word has length 58 [2021-12-28 01:22:38,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:38,683 INFO L470 AbstractCegarLoop]: Abstraction has 2429 states and 3323 transitions. [2021-12-28 01:22:38,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:38,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 3323 transitions. [2021-12-28 01:22:38,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-28 01:22:38,686 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:38,686 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] [2021-12-28 01:22:38,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-28 01:22:38,687 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)] === [2021-12-28 01:22:38,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:38,687 INFO L85 PathProgramCache]: Analyzing trace with hash 485032383, now seen corresponding path program 1 times [2021-12-28 01:22:38,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:38,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406564529] [2021-12-28 01:22:38,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:38,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:38,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:38,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:38,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406564529] [2021-12-28 01:22:38,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406564529] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:38,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:38,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:22:38,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287298973] [2021-12-28 01:22:38,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:38,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:22:38,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:38,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:22:38,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:22:38,722 INFO L87 Difference]: Start difference. First operand 2429 states and 3323 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) [2021-12-28 01:22:39,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:39,628 INFO L93 Difference]: Finished difference Result 5871 states and 8237 transitions. [2021-12-28 01:22:39,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:22:39,629 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 [2021-12-28 01:22:39,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:39,633 INFO L225 Difference]: With dead ends: 5871 [2021-12-28 01:22:39,634 INFO L226 Difference]: Without dead ends: 4408 [2021-12-28 01:22:39,637 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 [2021-12-28 01:22:39,638 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 985 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:39,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [985 Valid, 756 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:22:39,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2021-12-28 01:22:40,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 3745. [2021-12-28 01:22:40,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3745 states, 3744 states have (on average 1.3701923076923077) internal successors, (5130), 3744 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:40,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3745 states to 3745 states and 5130 transitions. [2021-12-28 01:22:40,407 INFO L78 Accepts]: Start accepts. Automaton has 3745 states and 5130 transitions. Word has length 66 [2021-12-28 01:22:40,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:40,407 INFO L470 AbstractCegarLoop]: Abstraction has 3745 states and 5130 transitions. [2021-12-28 01:22:40,407 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) [2021-12-28 01:22:40,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3745 states and 5130 transitions. [2021-12-28 01:22:40,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-28 01:22:40,410 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:40,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 01:22:40,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-28 01:22:40,410 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)] === [2021-12-28 01:22:40,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:40,411 INFO L85 PathProgramCache]: Analyzing trace with hash -656464105, now seen corresponding path program 1 times [2021-12-28 01:22:40,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:40,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171294779] [2021-12-28 01:22:40,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:40,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:40,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:40,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:40,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171294779] [2021-12-28 01:22:40,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171294779] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:40,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:40,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:22:40,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485015029] [2021-12-28 01:22:40,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:40,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:22:40,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:40,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:22:40,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:22:40,447 INFO L87 Difference]: Start difference. First operand 3745 states and 5130 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) [2021-12-28 01:22:41,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:41,163 INFO L93 Difference]: Finished difference Result 3751 states and 5133 transitions. [2021-12-28 01:22:41,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 01:22:41,163 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 [2021-12-28 01:22:41,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:41,167 INFO L225 Difference]: With dead ends: 3751 [2021-12-28 01:22:41,168 INFO L226 Difference]: Without dead ends: 3300 [2021-12-28 01:22:41,169 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 [2021-12-28 01:22:41,170 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 675 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:41,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 776 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:22:41,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2021-12-28 01:22:41,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 3296. [2021-12-28 01:22:41,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3296 states, 3295 states have (on average 1.3745068285280728) internal successors, (4529), 3295 states have internal predecessors, (4529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:41,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3296 states to 3296 states and 4529 transitions. [2021-12-28 01:22:41,873 INFO L78 Accepts]: Start accepts. Automaton has 3296 states and 4529 transitions. Word has length 67 [2021-12-28 01:22:41,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:41,873 INFO L470 AbstractCegarLoop]: Abstraction has 3296 states and 4529 transitions. [2021-12-28 01:22:41,873 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) [2021-12-28 01:22:41,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3296 states and 4529 transitions. [2021-12-28 01:22:41,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-28 01:22:41,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:41,876 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] [2021-12-28 01:22:41,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-28 01:22:41,877 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)] === [2021-12-28 01:22:41,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:41,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1272488439, now seen corresponding path program 1 times [2021-12-28 01:22:41,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:41,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684735956] [2021-12-28 01:22:41,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:41,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:41,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:41,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:41,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684735956] [2021-12-28 01:22:41,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684735956] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:41,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:41,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:41,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947998508] [2021-12-28 01:22:41,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:41,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:41,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:41,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:41,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:41,903 INFO L87 Difference]: Start difference. First operand 3296 states and 4529 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) [2021-12-28 01:22:43,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:43,099 INFO L93 Difference]: Finished difference Result 7776 states and 10815 transitions. [2021-12-28 01:22:43,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:22:43,099 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 [2021-12-28 01:22:43,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:43,105 INFO L225 Difference]: With dead ends: 7776 [2021-12-28 01:22:43,105 INFO L226 Difference]: Without dead ends: 5436 [2021-12-28 01:22:43,107 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 [2021-12-28 01:22:43,108 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 138 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:43,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 537 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:22:43,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5436 states. [2021-12-28 01:22:44,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5436 to 5130. [2021-12-28 01:22:44,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5130 states, 5129 states have (on average 1.3817508286215636) internal successors, (7087), 5129 states have internal predecessors, (7087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:44,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5130 states to 5130 states and 7087 transitions. [2021-12-28 01:22:44,232 INFO L78 Accepts]: Start accepts. Automaton has 5130 states and 7087 transitions. Word has length 68 [2021-12-28 01:22:44,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:44,233 INFO L470 AbstractCegarLoop]: Abstraction has 5130 states and 7087 transitions. [2021-12-28 01:22:44,233 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) [2021-12-28 01:22:44,233 INFO L276 IsEmpty]: Start isEmpty. Operand 5130 states and 7087 transitions. [2021-12-28 01:22:44,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-28 01:22:44,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:44,235 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] [2021-12-28 01:22:44,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-28 01:22:44,236 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)] === [2021-12-28 01:22:44,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:44,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1794430615, now seen corresponding path program 1 times [2021-12-28 01:22:44,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:44,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089998118] [2021-12-28 01:22:44,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:44,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:44,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:44,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:44,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089998118] [2021-12-28 01:22:44,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089998118] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:44,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:44,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:44,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544760206] [2021-12-28 01:22:44,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:44,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:44,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:44,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:44,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:44,270 INFO L87 Difference]: Start difference. First operand 5130 states and 7087 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) [2021-12-28 01:22:46,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:46,225 INFO L93 Difference]: Finished difference Result 12794 states and 17741 transitions. [2021-12-28 01:22:46,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:22:46,225 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 [2021-12-28 01:22:46,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:46,234 INFO L225 Difference]: With dead ends: 12794 [2021-12-28 01:22:46,234 INFO L226 Difference]: Without dead ends: 8392 [2021-12-28 01:22:46,236 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 [2021-12-28 01:22:46,237 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 141 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:46,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 525 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:22:46,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8392 states. [2021-12-28 01:22:47,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8392 to 7758. [2021-12-28 01:22:48,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7758 states, 7757 states have (on average 1.3661209230372566) internal successors, (10597), 7757 states have internal predecessors, (10597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:48,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7758 states to 7758 states and 10597 transitions. [2021-12-28 01:22:48,007 INFO L78 Accepts]: Start accepts. Automaton has 7758 states and 10597 transitions. Word has length 70 [2021-12-28 01:22:48,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:48,008 INFO L470 AbstractCegarLoop]: Abstraction has 7758 states and 10597 transitions. [2021-12-28 01:22:48,008 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) [2021-12-28 01:22:48,008 INFO L276 IsEmpty]: Start isEmpty. Operand 7758 states and 10597 transitions. [2021-12-28 01:22:48,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-28 01:22:48,010 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:48,010 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] [2021-12-28 01:22:48,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-28 01:22:48,010 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)] === [2021-12-28 01:22:48,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:48,011 INFO L85 PathProgramCache]: Analyzing trace with hash -530798665, now seen corresponding path program 1 times [2021-12-28 01:22:48,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:48,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868217913] [2021-12-28 01:22:48,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:48,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:48,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:48,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:48,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868217913] [2021-12-28 01:22:48,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868217913] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:48,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:48,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:22:48,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962880178] [2021-12-28 01:22:48,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:48,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:22:48,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:48,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:22:48,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:22:48,036 INFO L87 Difference]: Start difference. First operand 7758 states and 10597 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) [2021-12-28 01:22:51,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:22:51,373 INFO L93 Difference]: Finished difference Result 21018 states and 28863 transitions. [2021-12-28 01:22:51,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:22:51,373 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 [2021-12-28 01:22:51,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:22:51,389 INFO L225 Difference]: With dead ends: 21018 [2021-12-28 01:22:51,389 INFO L226 Difference]: Without dead ends: 13988 [2021-12-28 01:22:51,396 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 [2021-12-28 01:22:51,396 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 103 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:22:51,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 520 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:22:51,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13988 states. [2021-12-28 01:22:54,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13988 to 12770. [2021-12-28 01:22:54,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12770 states, 12769 states have (on average 1.3621270263920433) internal successors, (17393), 12769 states have internal predecessors, (17393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:22:54,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12770 states to 12770 states and 17393 transitions. [2021-12-28 01:22:54,491 INFO L78 Accepts]: Start accepts. Automaton has 12770 states and 17393 transitions. Word has length 70 [2021-12-28 01:22:54,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:22:54,492 INFO L470 AbstractCegarLoop]: Abstraction has 12770 states and 17393 transitions. [2021-12-28 01:22:54,492 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) [2021-12-28 01:22:54,492 INFO L276 IsEmpty]: Start isEmpty. Operand 12770 states and 17393 transitions. [2021-12-28 01:22:54,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-28 01:22:54,494 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:22:54,494 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] [2021-12-28 01:22:54,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-28 01:22:54,495 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)] === [2021-12-28 01:22:54,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:22:54,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1176069985, now seen corresponding path program 1 times [2021-12-28 01:22:54,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:22:54,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181978385] [2021-12-28 01:22:54,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:22:54,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:22:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:22:54,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:22:54,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:22:54,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181978385] [2021-12-28 01:22:54,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181978385] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:22:54,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:22:54,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 01:22:54,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40747079] [2021-12-28 01:22:54,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:22:54,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 01:22:54,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:22:54,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 01:22:54,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 01:22:54,555 INFO L87 Difference]: Start difference. First operand 12770 states and 17393 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) [2021-12-28 01:23:02,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:02,030 INFO L93 Difference]: Finished difference Result 27444 states and 36726 transitions. [2021-12-28 01:23:02,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 01:23:02,030 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 [2021-12-28 01:23:02,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:02,066 INFO L225 Difference]: With dead ends: 27444 [2021-12-28 01:23:02,067 INFO L226 Difference]: Without dead ends: 27442 [2021-12-28 01:23:02,072 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 [2021-12-28 01:23:02,073 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 366 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:02,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 1277 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:23:02,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27442 states. [2021-12-28 01:23:05,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27442 to 14114. [2021-12-28 01:23:05,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14114 states, 14113 states have (on average 1.3276411818890386) internal successors, (18737), 14113 states have internal predecessors, (18737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:05,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14114 states to 14114 states and 18737 transitions. [2021-12-28 01:23:05,920 INFO L78 Accepts]: Start accepts. Automaton has 14114 states and 18737 transitions. Word has length 72 [2021-12-28 01:23:05,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:05,920 INFO L470 AbstractCegarLoop]: Abstraction has 14114 states and 18737 transitions. [2021-12-28 01:23:05,921 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) [2021-12-28 01:23:05,921 INFO L276 IsEmpty]: Start isEmpty. Operand 14114 states and 18737 transitions. [2021-12-28 01:23:05,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-28 01:23:05,922 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:05,923 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] [2021-12-28 01:23:05,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-28 01:23:05,923 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)] === [2021-12-28 01:23:05,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:05,923 INFO L85 PathProgramCache]: Analyzing trace with hash 406807320, now seen corresponding path program 1 times [2021-12-28 01:23:05,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:05,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210787989] [2021-12-28 01:23:05,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:05,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:05,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:05,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:05,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210787989] [2021-12-28 01:23:05,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210787989] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:05,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:05,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 01:23:05,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222940937] [2021-12-28 01:23:05,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:05,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 01:23:05,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:05,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 01:23:05,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:23:05,948 INFO L87 Difference]: Start difference. First operand 14114 states and 18737 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) [2021-12-28 01:23:11,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 01:23:11,618 INFO L93 Difference]: Finished difference Result 34254 states and 45531 transitions. [2021-12-28 01:23:11,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 01:23:11,619 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 [2021-12-28 01:23:11,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 01:23:11,646 INFO L225 Difference]: With dead ends: 34254 [2021-12-28 01:23:11,646 INFO L226 Difference]: Without dead ends: 20868 [2021-12-28 01:23:11,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 01:23:11,660 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 169 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 01:23:11,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 398 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 01:23:11,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20868 states. [2021-12-28 01:23:17,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20868 to 20642. [2021-12-28 01:23:17,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20642 states, 20641 states have (on average 1.3069618720023255) internal successors, (26977), 20641 states have internal predecessors, (26977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 01:23:17,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20642 states to 20642 states and 26977 transitions. [2021-12-28 01:23:17,482 INFO L78 Accepts]: Start accepts. Automaton has 20642 states and 26977 transitions. Word has length 73 [2021-12-28 01:23:17,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 01:23:17,483 INFO L470 AbstractCegarLoop]: Abstraction has 20642 states and 26977 transitions. [2021-12-28 01:23:17,483 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) [2021-12-28 01:23:17,483 INFO L276 IsEmpty]: Start isEmpty. Operand 20642 states and 26977 transitions. [2021-12-28 01:23:17,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-28 01:23:17,485 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 01:23:17,485 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] [2021-12-28 01:23:17,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-28 01:23:17,486 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)] === [2021-12-28 01:23:17,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 01:23:17,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1519050461, now seen corresponding path program 1 times [2021-12-28 01:23:17,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 01:23:17,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707614877] [2021-12-28 01:23:17,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 01:23:17,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 01:23:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 01:23:17,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 01:23:17,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 01:23:17,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707614877] [2021-12-28 01:23:17,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707614877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 01:23:17,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 01:23:17,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 01:23:17,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167480302] [2021-12-28 01:23:17,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 01:23:17,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 01:23:17,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 01:23:17,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 01:23:17,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 01:23:17,548 INFO L87 Difference]: Start difference. First operand 20642 states and 26977 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)