/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 14:59:34,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 14:59:34,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 14:59:34,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 14:59:34,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 14:59:34,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 14:59:34,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 14:59:34,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 14:59:34,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 14:59:34,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 14:59:34,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 14:59:34,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 14:59:34,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 14:59:34,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 14:59:34,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 14:59:34,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 14:59:34,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 14:59:34,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 14:59:34,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 14:59:34,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 14:59:34,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 14:59:34,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 14:59:34,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 14:59:34,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 14:59:34,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 14:59:34,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 14:59:34,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 14:59:34,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 14:59:34,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 14:59:34,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 14:59:34,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 14:59:34,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 14:59:34,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 14:59:34,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 14:59:34,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 14:59:34,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 14:59:34,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 14:59:35,023 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 14:59:35,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 14:59:35,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 14:59:35,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 14:59:35,029 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 14:59:35,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 14:59:35,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 14:59:35,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 14:59:35,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 14:59:35,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 14:59:35,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 14:59:35,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 14:59:35,031 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 14:59:35,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 14:59:35,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 14:59:35,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 14:59:35,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 14:59:35,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:59:35,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 14:59:35,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 14:59:35,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 14:59:35,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 14:59:35,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 14:59:35,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 14:59:35,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 14:59:35,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 14:59:35,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 14:59:35,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 14:59:35,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 14:59:35,559 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 14:59:35,560 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 14:59:35,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2020-12-22 14:59:35,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0749dc466/fc587dd3ac8c43678296dfb56983c6d9/FLAG69fe514c7 [2020-12-22 14:59:36,644 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 14:59:36,645 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2020-12-22 14:59:36,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0749dc466/fc587dd3ac8c43678296dfb56983c6d9/FLAG69fe514c7 [2020-12-22 14:59:37,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0749dc466/fc587dd3ac8c43678296dfb56983c6d9 [2020-12-22 14:59:37,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 14:59:37,061 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 14:59:37,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 14:59:37,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 14:59:37,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 14:59:37,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:59:37" (1/1) ... [2020-12-22 14:59:37,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@180fbba8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:37, skipping insertion in model container [2020-12-22 14:59:37,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:59:37" (1/1) ... [2020-12-22 14:59:37,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 14:59:37,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 14:59:39,404 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i[258653,258666] [2020-12-22 14:59:39,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:59:39,596 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 14:59:40,186 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i[258653,258666] [2020-12-22 14:59:40,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:59:40,559 INFO L208 MainTranslator]: Completed translation [2020-12-22 14:59:40,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:40 WrapperNode [2020-12-22 14:59:40,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 14:59:40,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 14:59:40,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 14:59:40,562 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 14:59:40,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:40" (1/1) ... [2020-12-22 14:59:40,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:40" (1/1) ... [2020-12-22 14:59:41,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 14:59:41,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 14:59:41,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 14:59:41,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 14:59:41,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:40" (1/1) ... [2020-12-22 14:59:41,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:40" (1/1) ... [2020-12-22 14:59:41,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:40" (1/1) ... [2020-12-22 14:59:41,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:40" (1/1) ... [2020-12-22 14:59:41,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:40" (1/1) ... [2020-12-22 14:59:41,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:40" (1/1) ... [2020-12-22 14:59:41,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:40" (1/1) ... [2020-12-22 14:59:41,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 14:59:41,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 14:59:41,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 14:59:41,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 14:59:41,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:59:41,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 14:59:41,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 14:59:41,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 14:59:41,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 14:59:41,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 14:59:41,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 14:59:41,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 14:59:41,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 14:59:41,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 14:59:41,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 14:59:41,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 14:59:41,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 14:59:41,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 14:59:41,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 14:59:41,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 14:59:54,768 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 14:59:54,770 INFO L299 CfgBuilder]: Removed 2282 assume(true) statements. [2020-12-22 14:59:54,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:59:54 BoogieIcfgContainer [2020-12-22 14:59:54,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 14:59:54,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 14:59:54,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 14:59:54,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 14:59:54,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:59:37" (1/3) ... [2020-12-22 14:59:54,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce641b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:59:54, skipping insertion in model container [2020-12-22 14:59:54,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:59:40" (2/3) ... [2020-12-22 14:59:54,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce641b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:59:54, skipping insertion in model container [2020-12-22 14:59:54,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:59:54" (3/3) ... [2020-12-22 14:59:54,785 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--packetengines--hamachi.ko-entry_point.cil.out.i [2020-12-22 14:59:54,791 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 14:59:54,798 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-12-22 14:59:54,817 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-12-22 14:59:54,854 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 14:59:54,854 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 14:59:54,854 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 14:59:54,854 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 14:59:54,854 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 14:59:54,855 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 14:59:54,855 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 14:59:54,855 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 14:59:54,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states. [2020-12-22 14:59:54,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 14:59:54,926 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:59:54,927 INFO L422 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] [2020-12-22 14:59:54,928 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:59:54,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:59:54,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1766303631, now seen corresponding path program 1 times [2020-12-22 14:59:54,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:59:54,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773297350] [2020-12-22 14:59:54,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:59:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:59:55,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:59:55,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773297350] [2020-12-22 14:59:55,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:59:55,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:59:55,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882126532] [2020-12-22 14:59:55,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 14:59:55,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:59:55,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 14:59:55,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:59:55,835 INFO L87 Difference]: Start difference. First operand 2084 states. Second operand 2 states. [2020-12-22 14:59:56,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:59:56,011 INFO L93 Difference]: Finished difference Result 4164 states and 5649 transitions. [2020-12-22 14:59:56,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 14:59:56,013 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2020-12-22 14:59:56,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:59:56,051 INFO L225 Difference]: With dead ends: 4164 [2020-12-22 14:59:56,051 INFO L226 Difference]: Without dead ends: 2025 [2020-12-22 14:59:56,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 14:59:56,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2020-12-22 14:59:56,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 2025. [2020-12-22 14:59:56,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2025 states. [2020-12-22 14:59:56,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2025 states to 2025 states and 2675 transitions. [2020-12-22 14:59:56,234 INFO L78 Accepts]: Start accepts. Automaton has 2025 states and 2675 transitions. Word has length 59 [2020-12-22 14:59:56,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:59:56,235 INFO L481 AbstractCegarLoop]: Abstraction has 2025 states and 2675 transitions. [2020-12-22 14:59:56,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 14:59:56,236 INFO L276 IsEmpty]: Start isEmpty. Operand 2025 states and 2675 transitions. [2020-12-22 14:59:56,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 14:59:56,243 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:59:56,244 INFO L422 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] [2020-12-22 14:59:56,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 14:59:56,245 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:59:56,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:59:56,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1863285317, now seen corresponding path program 1 times [2020-12-22 14:59:56,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:59:56,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626466340] [2020-12-22 14:59:56,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:59:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:59:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:59:56,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626466340] [2020-12-22 14:59:56,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:59:56,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:59:56,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474275645] [2020-12-22 14:59:56,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:59:56,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:59:56,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:59:56,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:59:56,741 INFO L87 Difference]: Start difference. First operand 2025 states and 2675 transitions. Second operand 4 states. [2020-12-22 14:59:57,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:59:57,299 INFO L93 Difference]: Finished difference Result 7772 states and 10262 transitions. [2020-12-22 14:59:57,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:59:57,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-12-22 14:59:57,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:59:57,332 INFO L225 Difference]: With dead ends: 7772 [2020-12-22 14:59:57,332 INFO L226 Difference]: Without dead ends: 5780 [2020-12-22 14:59:57,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:59:57,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5780 states. [2020-12-22 14:59:57,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5780 to 3015. [2020-12-22 14:59:57,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3015 states. [2020-12-22 14:59:57,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 3980 transitions. [2020-12-22 14:59:57,468 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 3980 transitions. Word has length 59 [2020-12-22 14:59:57,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:59:57,469 INFO L481 AbstractCegarLoop]: Abstraction has 3015 states and 3980 transitions. [2020-12-22 14:59:57,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:59:57,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 3980 transitions. [2020-12-22 14:59:57,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 14:59:57,477 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:59:57,478 INFO L422 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] [2020-12-22 14:59:57,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 14:59:57,479 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:59:57,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:59:57,480 INFO L82 PathProgramCache]: Analyzing trace with hash -160932243, now seen corresponding path program 1 times [2020-12-22 14:59:57,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:59:57,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743678543] [2020-12-22 14:59:57,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:59:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:59:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:59:57,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743678543] [2020-12-22 14:59:57,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:59:57,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:59:57,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530078884] [2020-12-22 14:59:57,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:59:57,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:59:57,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:59:57,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:59:57,870 INFO L87 Difference]: Start difference. First operand 3015 states and 3980 transitions. Second operand 4 states. [2020-12-22 14:59:58,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:59:58,492 INFO L93 Difference]: Finished difference Result 12722 states and 16789 transitions. [2020-12-22 14:59:58,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:59:58,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-22 14:59:58,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:59:58,548 INFO L225 Difference]: With dead ends: 12722 [2020-12-22 14:59:58,549 INFO L226 Difference]: Without dead ends: 9740 [2020-12-22 14:59:58,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:59:58,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9740 states. [2020-12-22 14:59:58,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9740 to 5730. [2020-12-22 14:59:58,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5730 states. [2020-12-22 14:59:58,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5730 states to 5730 states and 7580 transitions. [2020-12-22 14:59:58,828 INFO L78 Accepts]: Start accepts. Automaton has 5730 states and 7580 transitions. Word has length 60 [2020-12-22 14:59:58,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:59:58,829 INFO L481 AbstractCegarLoop]: Abstraction has 5730 states and 7580 transitions. [2020-12-22 14:59:58,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:59:58,829 INFO L276 IsEmpty]: Start isEmpty. Operand 5730 states and 7580 transitions. [2020-12-22 14:59:58,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 14:59:58,833 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:59:58,833 INFO L422 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] [2020-12-22 14:59:58,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 14:59:58,833 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:59:58,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:59:58,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1512833684, now seen corresponding path program 1 times [2020-12-22 14:59:58,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:59:58,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268497124] [2020-12-22 14:59:58,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:59:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:59:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:59:59,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268497124] [2020-12-22 14:59:59,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:59:59,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:59:59,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076203968] [2020-12-22 14:59:59,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:59:59,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:59:59,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:59:59,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:59:59,060 INFO L87 Difference]: Start difference. First operand 5730 states and 7580 transitions. Second operand 4 states. [2020-12-22 14:59:59,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:59:59,863 INFO L93 Difference]: Finished difference Result 24596 states and 32496 transitions. [2020-12-22 14:59:59,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:59:59,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-12-22 14:59:59,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:59:59,975 INFO L225 Difference]: With dead ends: 24596 [2020-12-22 14:59:59,976 INFO L226 Difference]: Without dead ends: 18899 [2020-12-22 14:59:59,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:00:00,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18899 states. [2020-12-22 15:00:00,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18899 to 10920. [2020-12-22 15:00:00,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10920 states. [2020-12-22 15:00:00,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10920 states to 10920 states and 14454 transitions. [2020-12-22 15:00:00,727 INFO L78 Accepts]: Start accepts. Automaton has 10920 states and 14454 transitions. Word has length 61 [2020-12-22 15:00:00,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:00:00,729 INFO L481 AbstractCegarLoop]: Abstraction has 10920 states and 14454 transitions. [2020-12-22 15:00:00,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:00:00,729 INFO L276 IsEmpty]: Start isEmpty. Operand 10920 states and 14454 transitions. [2020-12-22 15:00:00,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 15:00:00,733 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:00,734 INFO L422 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] [2020-12-22 15:00:00,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 15:00:00,734 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:00,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:00,735 INFO L82 PathProgramCache]: Analyzing trace with hash 622908746, now seen corresponding path program 1 times [2020-12-22 15:00:00,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:00,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800729908] [2020-12-22 15:00:00,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:00,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:00:00,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800729908] [2020-12-22 15:00:00,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:00:00,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:00:00,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090079287] [2020-12-22 15:00:00,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:00:00,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:00:00,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:00:00,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:00:00,959 INFO L87 Difference]: Start difference. First operand 10920 states and 14454 transitions. Second operand 3 states. [2020-12-22 15:00:01,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:00:01,803 INFO L93 Difference]: Finished difference Result 26895 states and 35725 transitions. [2020-12-22 15:00:01,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:00:01,804 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 15:00:01,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:00:01,846 INFO L225 Difference]: With dead ends: 26895 [2020-12-22 15:00:01,847 INFO L226 Difference]: Without dead ends: 16008 [2020-12-22 15:00:01,867 INFO L677 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 [2020-12-22 15:00:01,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16008 states. [2020-12-22 15:00:02,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16008 to 15216. [2020-12-22 15:00:02,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15216 states. [2020-12-22 15:00:02,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15216 states to 15216 states and 20242 transitions. [2020-12-22 15:00:02,463 INFO L78 Accepts]: Start accepts. Automaton has 15216 states and 20242 transitions. Word has length 61 [2020-12-22 15:00:02,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:00:02,463 INFO L481 AbstractCegarLoop]: Abstraction has 15216 states and 20242 transitions. [2020-12-22 15:00:02,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:00:02,463 INFO L276 IsEmpty]: Start isEmpty. Operand 15216 states and 20242 transitions. [2020-12-22 15:00:02,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 15:00:02,465 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:02,466 INFO L422 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] [2020-12-22 15:00:02,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 15:00:02,466 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:02,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:02,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1859970716, now seen corresponding path program 1 times [2020-12-22 15:00:02,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:02,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488521743] [2020-12-22 15:00:02,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:00:02,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488521743] [2020-12-22 15:00:02,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:00:02,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:00:02,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205415559] [2020-12-22 15:00:02,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 15:00:02,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:00:02,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 15:00:02,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 15:00:02,687 INFO L87 Difference]: Start difference. First operand 15216 states and 20242 transitions. Second operand 4 states. [2020-12-22 15:00:04,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:00:04,609 INFO L93 Difference]: Finished difference Result 62288 states and 82676 transitions. [2020-12-22 15:00:04,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:00:04,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 15:00:04,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:00:04,734 INFO L225 Difference]: With dead ends: 62288 [2020-12-22 15:00:04,734 INFO L226 Difference]: Without dead ends: 47105 [2020-12-22 15:00:04,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:00:04,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47105 states. [2020-12-22 15:00:06,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47105 to 28447. [2020-12-22 15:00:06,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28447 states. [2020-12-22 15:00:06,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28447 states to 28447 states and 37820 transitions. [2020-12-22 15:00:06,152 INFO L78 Accepts]: Start accepts. Automaton has 28447 states and 37820 transitions. Word has length 62 [2020-12-22 15:00:06,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:00:06,152 INFO L481 AbstractCegarLoop]: Abstraction has 28447 states and 37820 transitions. [2020-12-22 15:00:06,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 15:00:06,153 INFO L276 IsEmpty]: Start isEmpty. Operand 28447 states and 37820 transitions. [2020-12-22 15:00:06,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 15:00:06,155 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:06,155 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:00:06,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 15:00:06,155 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:06,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:06,156 INFO L82 PathProgramCache]: Analyzing trace with hash -925212042, now seen corresponding path program 1 times [2020-12-22 15:00:06,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:06,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005233438] [2020-12-22 15:00:06,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:06,406 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 15:00:06,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005233438] [2020-12-22 15:00:06,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:00:06,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 15:00:06,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682229442] [2020-12-22 15:00:06,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:00:06,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:00:06,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:00:06,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:00:06,410 INFO L87 Difference]: Start difference. First operand 28447 states and 37820 transitions. Second operand 5 states. [2020-12-22 15:00:08,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:00:08,689 INFO L93 Difference]: Finished difference Result 90807 states and 120568 transitions. [2020-12-22 15:00:08,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 15:00:08,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-22 15:00:08,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:00:08,864 INFO L225 Difference]: With dead ends: 90807 [2020-12-22 15:00:08,865 INFO L226 Difference]: Without dead ends: 62393 [2020-12-22 15:00:08,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 15:00:09,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62393 states. [2020-12-22 15:00:10,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62393 to 28527. [2020-12-22 15:00:10,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28527 states. [2020-12-22 15:00:10,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28527 states to 28527 states and 37900 transitions. [2020-12-22 15:00:10,475 INFO L78 Accepts]: Start accepts. Automaton has 28527 states and 37900 transitions. Word has length 68 [2020-12-22 15:00:10,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:00:10,475 INFO L481 AbstractCegarLoop]: Abstraction has 28527 states and 37900 transitions. [2020-12-22 15:00:10,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:00:10,476 INFO L276 IsEmpty]: Start isEmpty. Operand 28527 states and 37900 transitions. [2020-12-22 15:00:10,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-12-22 15:00:10,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:10,487 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:00:10,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 15:00:10,487 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:10,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:10,488 INFO L82 PathProgramCache]: Analyzing trace with hash 293042139, now seen corresponding path program 1 times [2020-12-22 15:00:10,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:10,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310987712] [2020-12-22 15:00:10,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:10,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:00:10,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310987712] [2020-12-22 15:00:10,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:00:10,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:00:10,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111629203] [2020-12-22 15:00:10,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:00:10,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:00:10,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:00:10,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:00:10,738 INFO L87 Difference]: Start difference. First operand 28527 states and 37900 transitions. Second operand 3 states. [2020-12-22 15:00:13,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:00:13,122 INFO L93 Difference]: Finished difference Result 81051 states and 107870 transitions. [2020-12-22 15:00:13,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:00:13,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2020-12-22 15:00:13,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:00:13,234 INFO L225 Difference]: With dead ends: 81051 [2020-12-22 15:00:13,235 INFO L226 Difference]: Without dead ends: 52557 [2020-12-22 15:00:13,298 INFO L677 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 [2020-12-22 15:00:13,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52557 states. [2020-12-22 15:00:15,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52557 to 52501. [2020-12-22 15:00:15,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52501 states. [2020-12-22 15:00:15,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52501 states to 52501 states and 69929 transitions. [2020-12-22 15:00:15,564 INFO L78 Accepts]: Start accepts. Automaton has 52501 states and 69929 transitions. Word has length 156 [2020-12-22 15:00:15,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:00:15,564 INFO L481 AbstractCegarLoop]: Abstraction has 52501 states and 69929 transitions. [2020-12-22 15:00:15,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:00:15,565 INFO L276 IsEmpty]: Start isEmpty. Operand 52501 states and 69929 transitions. [2020-12-22 15:00:15,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-12-22 15:00:15,570 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:15,571 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:00:15,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 15:00:15,571 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:15,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:15,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1152985167, now seen corresponding path program 1 times [2020-12-22 15:00:15,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:15,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242572105] [2020-12-22 15:00:15,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 15:00:15,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242572105] [2020-12-22 15:00:15,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:00:15,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:00:15,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562630265] [2020-12-22 15:00:15,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:00:15,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:00:15,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:00:15,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:00:15,865 INFO L87 Difference]: Start difference. First operand 52501 states and 69929 transitions. Second operand 3 states. [2020-12-22 15:00:18,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:00:18,545 INFO L93 Difference]: Finished difference Result 104969 states and 139823 transitions. [2020-12-22 15:00:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:00:18,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2020-12-22 15:00:18,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:00:18,639 INFO L225 Difference]: With dead ends: 104969 [2020-12-22 15:00:18,640 INFO L226 Difference]: Without dead ends: 52501 [2020-12-22 15:00:18,715 INFO L677 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 [2020-12-22 15:00:18,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52501 states. [2020-12-22 15:00:20,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52501 to 52501. [2020-12-22 15:00:20,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52501 states. [2020-12-22 15:00:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52501 states to 52501 states and 69897 transitions. [2020-12-22 15:00:20,806 INFO L78 Accepts]: Start accepts. Automaton has 52501 states and 69897 transitions. Word has length 175 [2020-12-22 15:00:20,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:00:20,806 INFO L481 AbstractCegarLoop]: Abstraction has 52501 states and 69897 transitions. [2020-12-22 15:00:20,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:00:20,807 INFO L276 IsEmpty]: Start isEmpty. Operand 52501 states and 69897 transitions. [2020-12-22 15:00:20,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-12-22 15:00:20,817 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:20,817 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:00:20,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 15:00:20,818 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:20,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:20,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1769528987, now seen corresponding path program 1 times [2020-12-22 15:00:20,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:20,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819448838] [2020-12-22 15:00:20,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:21,158 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 15:00:21,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819448838] [2020-12-22 15:00:21,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:00:21,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:00:21,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423722238] [2020-12-22 15:00:21,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:00:21,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:00:21,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:00:21,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:00:21,162 INFO L87 Difference]: Start difference. First operand 52501 states and 69897 transitions. Second operand 3 states. [2020-12-22 15:00:24,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:00:24,992 INFO L93 Difference]: Finished difference Result 155421 states and 206933 transitions. [2020-12-22 15:00:24,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:00:24,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2020-12-22 15:00:24,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:00:25,160 INFO L225 Difference]: With dead ends: 155421 [2020-12-22 15:00:25,161 INFO L226 Difference]: Without dead ends: 102953 [2020-12-22 15:00:25,245 INFO L677 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 [2020-12-22 15:00:25,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102953 states. [2020-12-22 15:00:27,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102953 to 52517. [2020-12-22 15:00:27,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52517 states. [2020-12-22 15:00:27,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52517 states to 52517 states and 69913 transitions. [2020-12-22 15:00:27,830 INFO L78 Accepts]: Start accepts. Automaton has 52517 states and 69913 transitions. Word has length 188 [2020-12-22 15:00:27,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:00:27,831 INFO L481 AbstractCegarLoop]: Abstraction has 52517 states and 69913 transitions. [2020-12-22 15:00:27,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:00:27,831 INFO L276 IsEmpty]: Start isEmpty. Operand 52517 states and 69913 transitions. [2020-12-22 15:00:27,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-12-22 15:00:27,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:27,836 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:00:27,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 15:00:27,836 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:27,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:27,837 INFO L82 PathProgramCache]: Analyzing trace with hash -719684328, now seen corresponding path program 1 times [2020-12-22 15:00:27,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:27,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455149300] [2020-12-22 15:00:27,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:28,117 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 15:00:28,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455149300] [2020-12-22 15:00:28,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74988129] [2020-12-22 15:00:28,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:00:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:30,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 3586 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:00:30,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:00:31,121 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 15:00:31,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:00:31,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 15:00:31,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935805293] [2020-12-22 15:00:31,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:00:31,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:00:31,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:00:31,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:00:31,124 INFO L87 Difference]: Start difference. First operand 52517 states and 69913 transitions. Second operand 3 states. [2020-12-22 15:00:35,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:00:35,962 INFO L93 Difference]: Finished difference Result 157005 states and 209189 transitions. [2020-12-22 15:00:35,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:00:35,963 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2020-12-22 15:00:35,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:00:36,143 INFO L225 Difference]: With dead ends: 157005 [2020-12-22 15:00:36,143 INFO L226 Difference]: Without dead ends: 104521 [2020-12-22 15:00:36,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:00:36,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104521 states. [2020-12-22 15:00:38,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104521 to 53189. [2020-12-22 15:00:38,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53189 states. [2020-12-22 15:00:38,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53189 states to 53189 states and 70585 transitions. [2020-12-22 15:00:38,995 INFO L78 Accepts]: Start accepts. Automaton has 53189 states and 70585 transitions. Word has length 203 [2020-12-22 15:00:38,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:00:38,995 INFO L481 AbstractCegarLoop]: Abstraction has 53189 states and 70585 transitions. [2020-12-22 15:00:38,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:00:38,995 INFO L276 IsEmpty]: Start isEmpty. Operand 53189 states and 70585 transitions. [2020-12-22 15:00:38,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-12-22 15:00:38,999 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:39,000 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:00:39,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 15:00:39,215 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:39,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:39,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1899573033, now seen corresponding path program 1 times [2020-12-22 15:00:39,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:39,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060009267] [2020-12-22 15:00:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 15:00:39,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060009267] [2020-12-22 15:00:39,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669305163] [2020-12-22 15:00:39,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:00:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:41,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 3694 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:00:42,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:00:42,386 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 15:00:42,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:00:42,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 15:00:42,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969952086] [2020-12-22 15:00:42,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:00:42,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:00:42,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:00:42,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:00:42,389 INFO L87 Difference]: Start difference. First operand 53189 states and 70585 transitions. Second operand 3 states. [2020-12-22 15:00:45,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:00:45,577 INFO L93 Difference]: Finished difference Result 123569 states and 165127 transitions. [2020-12-22 15:00:45,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:00:45,577 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2020-12-22 15:00:45,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:00:45,668 INFO L225 Difference]: With dead ends: 123569 [2020-12-22 15:00:45,668 INFO L226 Difference]: Without dead ends: 70413 [2020-12-22 15:00:45,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:00:45,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70413 states. [2020-12-22 15:00:48,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70413 to 68829. [2020-12-22 15:00:48,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68829 states. [2020-12-22 15:00:48,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68829 states to 68829 states and 91881 transitions. [2020-12-22 15:00:48,695 INFO L78 Accepts]: Start accepts. Automaton has 68829 states and 91881 transitions. Word has length 203 [2020-12-22 15:00:48,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:00:48,696 INFO L481 AbstractCegarLoop]: Abstraction has 68829 states and 91881 transitions. [2020-12-22 15:00:48,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:00:48,696 INFO L276 IsEmpty]: Start isEmpty. Operand 68829 states and 91881 transitions. [2020-12-22 15:00:48,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-12-22 15:00:48,701 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:48,701 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:00:48,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 15:00:48,915 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:48,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:48,917 INFO L82 PathProgramCache]: Analyzing trace with hash 438643562, now seen corresponding path program 1 times [2020-12-22 15:00:48,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:48,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497580778] [2020-12-22 15:00:48,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:49,236 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 15:00:49,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497580778] [2020-12-22 15:00:49,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224180029] [2020-12-22 15:00:49,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:00:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:51,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 3620 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 15:00:51,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:00:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 15:00:52,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:00:52,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2020-12-22 15:00:52,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2851239] [2020-12-22 15:00:52,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:00:52,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:00:52,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:00:52,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:00:52,241 INFO L87 Difference]: Start difference. First operand 68829 states and 91881 transitions. Second operand 3 states. [2020-12-22 15:00:55,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:00:55,221 INFO L93 Difference]: Finished difference Result 137625 states and 183727 transitions. [2020-12-22 15:00:55,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:00:55,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2020-12-22 15:00:55,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:00:55,314 INFO L225 Difference]: With dead ends: 137625 [2020-12-22 15:00:55,314 INFO L226 Difference]: Without dead ends: 68829 [2020-12-22 15:00:55,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:00:55,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68829 states. [2020-12-22 15:00:58,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68829 to 68829. [2020-12-22 15:00:58,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68829 states. [2020-12-22 15:00:58,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68829 states to 68829 states and 91865 transitions. [2020-12-22 15:00:58,528 INFO L78 Accepts]: Start accepts. Automaton has 68829 states and 91865 transitions. Word has length 218 [2020-12-22 15:00:58,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:00:58,529 INFO L481 AbstractCegarLoop]: Abstraction has 68829 states and 91865 transitions. [2020-12-22 15:00:58,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:00:58,529 INFO L276 IsEmpty]: Start isEmpty. Operand 68829 states and 91865 transitions. [2020-12-22 15:00:58,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-12-22 15:00:58,533 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:00:58,533 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:00:58,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 15:00:58,744 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:00:58,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:00:58,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1392583720, now seen corresponding path program 1 times [2020-12-22 15:00:58,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:00:58,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810749954] [2020-12-22 15:00:58,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:00:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:00:59,018 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 15:00:59,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810749954] [2020-12-22 15:00:59,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973150661] [2020-12-22 15:00:59,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:01:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:01:01,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 3618 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 15:01:01,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:01:01,783 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2020-12-22 15:01:02,067 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 15:01:02,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:01:02,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2020-12-22 15:01:02,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681820844] [2020-12-22 15:01:02,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:01:02,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:01:02,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:01:02,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:01:02,069 INFO L87 Difference]: Start difference. First operand 68829 states and 91865 transitions. Second operand 3 states. [2020-12-22 15:01:07,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:01:07,551 INFO L93 Difference]: Finished difference Result 206373 states and 275445 transitions. [2020-12-22 15:01:07,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:01:07,551 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2020-12-22 15:01:07,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:01:07,903 INFO L225 Difference]: With dead ends: 206373 [2020-12-22 15:01:07,904 INFO L226 Difference]: Without dead ends: 137577 [2020-12-22 15:01:07,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:01:08,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137577 states. [2020-12-22 15:01:13,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137577 to 137537. [2020-12-22 15:01:13,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137537 states. [2020-12-22 15:01:14,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137537 states to 137537 states and 183571 transitions. [2020-12-22 15:01:14,249 INFO L78 Accepts]: Start accepts. Automaton has 137537 states and 183571 transitions. Word has length 218 [2020-12-22 15:01:14,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:01:14,249 INFO L481 AbstractCegarLoop]: Abstraction has 137537 states and 183571 transitions. [2020-12-22 15:01:14,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:01:14,249 INFO L276 IsEmpty]: Start isEmpty. Operand 137537 states and 183571 transitions. [2020-12-22 15:01:14,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-12-22 15:01:14,254 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:01:14,255 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:01:14,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:01:14,463 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:01:14,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:01:14,464 INFO L82 PathProgramCache]: Analyzing trace with hash 312144973, now seen corresponding path program 1 times [2020-12-22 15:01:14,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:01:14,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268012511] [2020-12-22 15:01:14,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:01:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:01:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 15:01:15,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268012511] [2020-12-22 15:01:15,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145635328] [2020-12-22 15:01:15,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:01:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:01:17,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 3622 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 15:01:17,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:01:17,987 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 15:01:17,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:01:17,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2020-12-22 15:01:17,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861073603] [2020-12-22 15:01:17,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:01:17,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:01:17,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:01:17,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:01:17,990 INFO L87 Difference]: Start difference. First operand 137537 states and 183571 transitions. Second operand 3 states. [2020-12-22 15:01:23,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:01:23,147 INFO L93 Difference]: Finished difference Result 137537 states and 183571 transitions. [2020-12-22 15:01:23,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:01:23,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2020-12-22 15:01:23,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:01:23,359 INFO L225 Difference]: With dead ends: 137537 [2020-12-22 15:01:23,359 INFO L226 Difference]: Without dead ends: 137529 [2020-12-22 15:01:23,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:01:23,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137529 states. [2020-12-22 15:01:29,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137529 to 137529. [2020-12-22 15:01:29,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137529 states. [2020-12-22 15:01:29,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137529 states to 137529 states and 183311 transitions. [2020-12-22 15:01:29,670 INFO L78 Accepts]: Start accepts. Automaton has 137529 states and 183311 transitions. Word has length 220 [2020-12-22 15:01:29,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:01:29,671 INFO L481 AbstractCegarLoop]: Abstraction has 137529 states and 183311 transitions. [2020-12-22 15:01:29,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:01:29,671 INFO L276 IsEmpty]: Start isEmpty. Operand 137529 states and 183311 transitions. [2020-12-22 15:01:29,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-12-22 15:01:29,682 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:01:29,683 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:01:29,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 15:01:29,884 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:01:29,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:01:29,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1742910726, now seen corresponding path program 1 times [2020-12-22 15:01:29,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:01:29,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609531708] [2020-12-22 15:01:29,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:01:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:01:30,434 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 15:01:30,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609531708] [2020-12-22 15:01:30,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841166949] [2020-12-22 15:01:30,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:01:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:01:33,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 3909 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 15:01:33,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:01:33,601 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-12-22 15:01:33,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:01:33,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2020-12-22 15:01:33,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807432884] [2020-12-22 15:01:33,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:01:33,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:01:33,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:01:33,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:01:33,605 INFO L87 Difference]: Start difference. First operand 137529 states and 183311 transitions. Second operand 3 states. [2020-12-22 15:01:39,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:01:39,959 INFO L93 Difference]: Finished difference Result 271937 states and 363499 transitions. [2020-12-22 15:01:39,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:01:39,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 243 [2020-12-22 15:01:39,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:01:40,343 INFO L225 Difference]: With dead ends: 271937 [2020-12-22 15:01:40,344 INFO L226 Difference]: Without dead ends: 134441 [2020-12-22 15:01:40,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:01:40,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134441 states. [2020-12-22 15:01:46,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134441 to 134441. [2020-12-22 15:01:46,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134441 states. [2020-12-22 15:01:46,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134441 states to 134441 states and 178303 transitions. [2020-12-22 15:01:46,969 INFO L78 Accepts]: Start accepts. Automaton has 134441 states and 178303 transitions. Word has length 243 [2020-12-22 15:01:46,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:01:46,970 INFO L481 AbstractCegarLoop]: Abstraction has 134441 states and 178303 transitions. [2020-12-22 15:01:46,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:01:46,970 INFO L276 IsEmpty]: Start isEmpty. Operand 134441 states and 178303 transitions. [2020-12-22 15:01:46,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-12-22 15:01:46,985 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:01:46,985 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:01:47,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:01:47,201 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:01:47,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:01:47,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1836163082, now seen corresponding path program 1 times [2020-12-22 15:01:47,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:01:47,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085030069] [2020-12-22 15:01:47,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:01:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:01:47,728 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 15:01:47,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085030069] [2020-12-22 15:01:47,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853750420] [2020-12-22 15:01:47,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:01:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:01:50,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 3909 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 15:01:50,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:01:50,786 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-22 15:01:50,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 15:01:50,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 15:01:50,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342006782] [2020-12-22 15:01:50,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:01:50,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:01:50,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:01:50,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:01:50,790 INFO L87 Difference]: Start difference. First operand 134441 states and 178303 transitions. Second operand 5 states. [2020-12-22 15:02:03,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:02:03,150 INFO L93 Difference]: Finished difference Result 399129 states and 529383 transitions. [2020-12-22 15:02:03,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 15:02:03,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 243 [2020-12-22 15:02:03,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:02:04,125 INFO L225 Difference]: With dead ends: 399129 [2020-12-22 15:02:04,126 INFO L226 Difference]: Without dead ends: 264721 [2020-12-22 15:02:04,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:02:04,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264721 states. [2020-12-22 15:02:14,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264721 to 134985. [2020-12-22 15:02:14,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134985 states. [2020-12-22 15:02:15,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134985 states to 134985 states and 178975 transitions. [2020-12-22 15:02:15,194 INFO L78 Accepts]: Start accepts. Automaton has 134985 states and 178975 transitions. Word has length 243 [2020-12-22 15:02:15,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:02:15,194 INFO L481 AbstractCegarLoop]: Abstraction has 134985 states and 178975 transitions. [2020-12-22 15:02:15,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:02:15,199 INFO L276 IsEmpty]: Start isEmpty. Operand 134985 states and 178975 transitions. [2020-12-22 15:02:15,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-12-22 15:02:15,221 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:02:15,221 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:02:15,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 15:02:15,436 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:02:15,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:02:15,438 INFO L82 PathProgramCache]: Analyzing trace with hash 770692855, now seen corresponding path program 2 times [2020-12-22 15:02:15,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:02:15,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351360107] [2020-12-22 15:02:15,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:02:15,559 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:02:15,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [671341496] [2020-12-22 15:02:15,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:02:19,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 15:02:19,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 15:02:19,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 2433 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 15:02:19,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:02:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2020-12-22 15:02:20,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351360107] [2020-12-22 15:02:20,472 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 15:02:20,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671341496] [2020-12-22 15:02:20,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:02:20,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:02:20,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370166619] [2020-12-22 15:02:20,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:02:20,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:02:20,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:02:20,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:02:20,478 INFO L87 Difference]: Start difference. First operand 134985 states and 178975 transitions. Second operand 3 states. [2020-12-22 15:02:27,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:02:27,211 INFO L93 Difference]: Finished difference Result 269976 states and 357989 transitions. [2020-12-22 15:02:27,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:02:27,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 258 [2020-12-22 15:02:27,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:02:27,481 INFO L225 Difference]: With dead ends: 269976 [2020-12-22 15:02:27,481 INFO L226 Difference]: Without dead ends: 135019 [2020-12-22 15:02:27,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:02:27,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135019 states. [2020-12-22 15:02:34,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135019 to 135019. [2020-12-22 15:02:34,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135019 states. [2020-12-22 15:02:34,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135019 states to 135019 states and 179009 transitions. [2020-12-22 15:02:34,683 INFO L78 Accepts]: Start accepts. Automaton has 135019 states and 179009 transitions. Word has length 258 [2020-12-22 15:02:34,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:02:34,683 INFO L481 AbstractCegarLoop]: Abstraction has 135019 states and 179009 transitions. [2020-12-22 15:02:34,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:02:34,684 INFO L276 IsEmpty]: Start isEmpty. Operand 135019 states and 179009 transitions. [2020-12-22 15:02:34,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-12-22 15:02:34,922 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:02:34,923 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:02:35,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 15:02:35,124 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:02:35,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:02:35,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1024642937, now seen corresponding path program 1 times [2020-12-22 15:02:35,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:02:35,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220003441] [2020-12-22 15:02:35,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:02:35,252 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:02:35,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [202631069] [2020-12-22 15:02:35,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:02:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:02:37,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 4012 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 15:02:37,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:02:38,436 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2020-12-22 15:02:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-12-22 15:02:38,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220003441] [2020-12-22 15:02:38,554 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 15:02:38,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202631069] [2020-12-22 15:02:38,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:02:38,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 15:02:38,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232010216] [2020-12-22 15:02:38,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:02:38,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:02:38,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:02:38,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:02:38,556 INFO L87 Difference]: Start difference. First operand 135019 states and 179009 transitions. Second operand 5 states. [2020-12-22 15:02:51,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:02:51,796 INFO L93 Difference]: Finished difference Result 400315 states and 530825 transitions. [2020-12-22 15:02:51,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:02:51,797 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 260 [2020-12-22 15:02:51,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:02:52,445 INFO L225 Difference]: With dead ends: 400315 [2020-12-22 15:02:52,445 INFO L226 Difference]: Without dead ends: 265331 [2020-12-22 15:02:52,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 15:02:52,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265331 states. [2020-12-22 15:03:01,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265331 to 135563. [2020-12-22 15:03:01,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135563 states. [2020-12-22 15:03:01,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135563 states to 135563 states and 179681 transitions. [2020-12-22 15:03:01,369 INFO L78 Accepts]: Start accepts. Automaton has 135563 states and 179681 transitions. Word has length 260 [2020-12-22 15:03:01,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:03:01,369 INFO L481 AbstractCegarLoop]: Abstraction has 135563 states and 179681 transitions. [2020-12-22 15:03:01,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:03:01,369 INFO L276 IsEmpty]: Start isEmpty. Operand 135563 states and 179681 transitions. [2020-12-22 15:03:01,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-12-22 15:03:01,380 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:03:01,381 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:03:01,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:03:01,583 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:03:01,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:03:01,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1641415768, now seen corresponding path program 2 times [2020-12-22 15:03:01,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:03:01,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369755133] [2020-12-22 15:03:01,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:03:01,948 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 15:03:01,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1044613856] [2020-12-22 15:03:01,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true