/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-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 14:18:34,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 14:18:34,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 14:18:34,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 14:18:34,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 14:18:34,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 14:18:34,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 14:18:34,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 14:18:34,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 14:18:34,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 14:18:34,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 14:18:34,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 14:18:34,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 14:18:34,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 14:18:34,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 14:18:34,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 14:18:34,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 14:18:34,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 14:18:34,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 14:18:34,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 14:18:34,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 14:18:34,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 14:18:34,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 14:18:34,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 14:18:34,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 14:18:34,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 14:18:34,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 14:18:34,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 14:18:34,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 14:18:34,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 14:18:34,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 14:18:34,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 14:18:34,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 14:18:34,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 14:18:34,973 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 14:18:34,973 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 14:18:34,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 14:18:34,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 14:18:34,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 14:18:34,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 14:18:34,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 14:18:34,978 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 14:18:35,034 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 14:18:35,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 14:18:35,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 14:18:35,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 14:18:35,040 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 14:18:35,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 14:18:35,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 14:18:35,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 14:18:35,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 14:18:35,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 14:18:35,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 14:18:35,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 14:18:35,043 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 14:18:35,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 14:18:35,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 14:18:35,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 14:18:35,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 14:18:35,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 14:18:35,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 14:18:35,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 14:18:35,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 14:18:35,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 14:18:35,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 14:18:35,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 14:18:35,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 14:18:35,046 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 14:18:35,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 14:18:35,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 14:18:35,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 14:18:35,562 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 14:18:35,563 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 14:18:35,564 INFO L432 ainManager$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-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2020-12-22 14:18:35,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/836690bd5/f9203a81550a41f4abdc9a2b6c974ac4/FLAG0feaf7826 [2020-12-22 14:18:36,787 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 14:18:36,788 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2020-12-22 14:18:36,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/836690bd5/f9203a81550a41f4abdc9a2b6c974ac4/FLAG0feaf7826 [2020-12-22 14:18:37,188 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/836690bd5/f9203a81550a41f4abdc9a2b6c974ac4 [2020-12-22 14:18:37,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 14:18:37,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 14:18:37,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 14:18:37,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 14:18:37,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 14:18:37,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:18:37" (1/1) ... [2020-12-22 14:18:37,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191e9ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:37, skipping insertion in model container [2020-12-22 14:18:37,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:18:37" (1/1) ... [2020-12-22 14:18:37,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 14:18:37,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 14:18:38,397 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-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i[192198,192211] [2020-12-22 14:18:38,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:18:38,597 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 14:18:38,966 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-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i[192198,192211] [2020-12-22 14:18:39,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 14:18:39,528 INFO L208 MainTranslator]: Completed translation [2020-12-22 14:18:39,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:39 WrapperNode [2020-12-22 14:18:39,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 14:18:39,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 14:18:39,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 14:18:39,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 14:18:39,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:39" (1/1) ... [2020-12-22 14:18:39,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:39" (1/1) ... [2020-12-22 14:18:40,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 14:18:40,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 14:18:40,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 14:18:40,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 14:18:40,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:39" (1/1) ... [2020-12-22 14:18:40,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:39" (1/1) ... [2020-12-22 14:18:40,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:39" (1/1) ... [2020-12-22 14:18:40,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:39" (1/1) ... [2020-12-22 14:18:40,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:39" (1/1) ... [2020-12-22 14:18:40,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:39" (1/1) ... [2020-12-22 14:18:40,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:39" (1/1) ... [2020-12-22 14:18:40,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 14:18:40,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 14:18:40,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 14:18:40,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 14:18:40,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:39" (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 14:18:40,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 14:18:40,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 14:18:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 14:18:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 14:18:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 14:18:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 14:18:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 14:18:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 14:18:40,909 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2020-12-22 14:18:40,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 14:18:40,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 14:18:40,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 14:19:50,377 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 14:19:50,377 INFO L299 CfgBuilder]: Removed 1329 assume(true) statements. [2020-12-22 14:19:50,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:19:50 BoogieIcfgContainer [2020-12-22 14:19:50,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 14:19:50,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 14:19:50,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 14:19:50,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 14:19:50,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:18:37" (1/3) ... [2020-12-22 14:19:50,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f184d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:19:50, skipping insertion in model container [2020-12-22 14:19:50,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:18:39" (2/3) ... [2020-12-22 14:19:50,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f184d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:19:50, skipping insertion in model container [2020-12-22 14:19:50,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:19:50" (3/3) ... [2020-12-22 14:19:50,391 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2020-12-22 14:19:50,398 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 14:19:50,405 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-22 14:19:50,425 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-22 14:19:50,479 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 14:19:50,480 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 14:19:50,480 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 14:19:50,480 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 14:19:50,480 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 14:19:50,480 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 14:19:50,480 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 14:19:50,480 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 14:19:50,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states. [2020-12-22 14:19:50,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 14:19:50,539 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:19:50,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:19:50,541 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:19:50,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:19:50,547 INFO L82 PathProgramCache]: Analyzing trace with hash 754127617, now seen corresponding path program 1 times [2020-12-22 14:19:50,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:19:50,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067723023] [2020-12-22 14:19:50,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:19:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:19:52,337 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 14:19:52,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067723023] [2020-12-22 14:19:52,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:19:52,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:19:52,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444225377] [2020-12-22 14:19:52,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:19:52,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:19:52,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:19:52,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:19:52,366 INFO L87 Difference]: Start difference. First operand 1424 states. Second operand 3 states. [2020-12-22 14:19:53,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:19:53,224 INFO L93 Difference]: Finished difference Result 4138 states and 5781 transitions. [2020-12-22 14:19:53,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:19:53,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-12-22 14:19:53,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:19:53,270 INFO L225 Difference]: With dead ends: 4138 [2020-12-22 14:19:53,270 INFO L226 Difference]: Without dead ends: 2702 [2020-12-22 14:19:53,285 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 14:19:53,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2702 states. [2020-12-22 14:19:53,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2702 to 2686. [2020-12-22 14:19:53,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2686 states. [2020-12-22 14:19:53,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 3711 transitions. [2020-12-22 14:19:53,492 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 3711 transitions. Word has length 13 [2020-12-22 14:19:53,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:19:53,492 INFO L481 AbstractCegarLoop]: Abstraction has 2686 states and 3711 transitions. [2020-12-22 14:19:53,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:19:53,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 3711 transitions. [2020-12-22 14:19:53,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 14:19:53,497 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:19:53,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 14:19:53,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 14:19:53,498 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:19:53,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:19:53,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1936008622, now seen corresponding path program 1 times [2020-12-22 14:19:53,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:19:53,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124542025] [2020-12-22 14:19:53,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:19:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:19:54,599 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 14:19:54,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124542025] [2020-12-22 14:19:54,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:19:54,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:19:54,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372326340] [2020-12-22 14:19:54,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:19:54,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:19:54,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:19:54,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:19:54,603 INFO L87 Difference]: Start difference. First operand 2686 states and 3711 transitions. Second operand 3 states. [2020-12-22 14:19:57,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:19:57,367 INFO L93 Difference]: Finished difference Result 7866 states and 10890 transitions. [2020-12-22 14:19:57,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:19:57,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-22 14:19:57,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:19:57,397 INFO L225 Difference]: With dead ends: 7866 [2020-12-22 14:19:57,397 INFO L226 Difference]: Without dead ends: 5183 [2020-12-22 14:19:57,404 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 14:19:57,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5183 states. [2020-12-22 14:19:57,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5183 to 5167. [2020-12-22 14:19:57,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5167 states. [2020-12-22 14:19:57,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 7168 transitions. [2020-12-22 14:19:57,585 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 7168 transitions. Word has length 14 [2020-12-22 14:19:57,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:19:57,585 INFO L481 AbstractCegarLoop]: Abstraction has 5167 states and 7168 transitions. [2020-12-22 14:19:57,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:19:57,586 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 7168 transitions. [2020-12-22 14:19:57,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 14:19:57,594 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:19:57,594 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] [2020-12-22 14:19:57,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 14:19:57,596 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:19:57,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:19:57,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1032247073, now seen corresponding path program 1 times [2020-12-22 14:19:57,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:19:57,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465890157] [2020-12-22 14:19:57,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:19:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:19:58,717 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 14:19:58,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465890157] [2020-12-22 14:19:58,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:19:58,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 14:19:58,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466787386] [2020-12-22 14:19:58,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 14:19:58,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:19:58,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 14:19:58,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 14:19:58,724 INFO L87 Difference]: Start difference. First operand 5167 states and 7168 transitions. Second operand 6 states. [2020-12-22 14:20:00,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:20:00,014 INFO L93 Difference]: Finished difference Result 25673 states and 35628 transitions. [2020-12-22 14:20:00,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 14:20:00,017 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-12-22 14:20:00,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:20:00,154 INFO L225 Difference]: With dead ends: 25673 [2020-12-22 14:20:00,155 INFO L226 Difference]: Without dead ends: 20509 [2020-12-22 14:20:00,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 14:20:00,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20509 states. [2020-12-22 14:20:00,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20509 to 5217. [2020-12-22 14:20:00,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5217 states. [2020-12-22 14:20:00,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 7228 transitions. [2020-12-22 14:20:00,704 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 7228 transitions. Word has length 22 [2020-12-22 14:20:00,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:20:00,705 INFO L481 AbstractCegarLoop]: Abstraction has 5217 states and 7228 transitions. [2020-12-22 14:20:00,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 14:20:00,705 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 7228 transitions. [2020-12-22 14:20:00,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 14:20:00,706 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:20:00,707 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] [2020-12-22 14:20:00,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 14:20:00,707 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:20:00,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:20:00,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1290412511, now seen corresponding path program 1 times [2020-12-22 14:20:00,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:20:00,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351648071] [2020-12-22 14:20:00,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:20:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:20:01,599 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 14:20:01,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351648071] [2020-12-22 14:20:01,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:20:01,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:20:01,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205536701] [2020-12-22 14:20:01,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:20:01,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:20:01,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:20:01,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:20:01,602 INFO L87 Difference]: Start difference. First operand 5217 states and 7228 transitions. Second operand 3 states. [2020-12-22 14:20:01,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:20:01,805 INFO L93 Difference]: Finished difference Result 5217 states and 7228 transitions. [2020-12-22 14:20:01,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:20:01,806 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-22 14:20:01,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:20:01,820 INFO L225 Difference]: With dead ends: 5217 [2020-12-22 14:20:01,820 INFO L226 Difference]: Without dead ends: 5215 [2020-12-22 14:20:01,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 14:20:01,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5215 states. [2020-12-22 14:20:02,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5215 to 5215. [2020-12-22 14:20:02,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5215 states. [2020-12-22 14:20:02,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 7226 transitions. [2020-12-22 14:20:02,114 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 7226 transitions. Word has length 22 [2020-12-22 14:20:02,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:20:02,114 INFO L481 AbstractCegarLoop]: Abstraction has 5215 states and 7226 transitions. [2020-12-22 14:20:02,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:20:02,115 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 7226 transitions. [2020-12-22 14:20:02,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 14:20:02,116 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:20:02,116 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] [2020-12-22 14:20:02,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 14:20:02,117 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:20:02,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:20:02,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1348092953, now seen corresponding path program 1 times [2020-12-22 14:20:02,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:20:02,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344573025] [2020-12-22 14:20:02,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:20:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:20:03,036 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 14:20:03,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344573025] [2020-12-22 14:20:03,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:20:03,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:20:03,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089435929] [2020-12-22 14:20:03,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:20:03,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:20:03,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:20:03,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:20:03,046 INFO L87 Difference]: Start difference. First operand 5215 states and 7226 transitions. Second operand 3 states. [2020-12-22 14:20:03,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:20:03,245 INFO L93 Difference]: Finished difference Result 5215 states and 7226 transitions. [2020-12-22 14:20:03,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:20:03,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 14:20:03,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:20:03,258 INFO L225 Difference]: With dead ends: 5215 [2020-12-22 14:20:03,259 INFO L226 Difference]: Without dead ends: 5213 [2020-12-22 14:20:03,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 14:20:03,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5213 states. [2020-12-22 14:20:03,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5213 to 5213. [2020-12-22 14:20:03,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5213 states. [2020-12-22 14:20:03,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 7224 transitions. [2020-12-22 14:20:03,662 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 7224 transitions. Word has length 23 [2020-12-22 14:20:03,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:20:03,663 INFO L481 AbstractCegarLoop]: Abstraction has 5213 states and 7224 transitions. [2020-12-22 14:20:03,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:20:03,663 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 7224 transitions. [2020-12-22 14:20:03,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 14:20:03,664 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:20:03,664 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] [2020-12-22 14:20:03,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 14:20:03,665 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:20:03,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:20:03,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1158780631, now seen corresponding path program 1 times [2020-12-22 14:20:03,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:20:03,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604948615] [2020-12-22 14:20:03,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:20:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:20:04,553 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 14:20:04,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604948615] [2020-12-22 14:20:04,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:20:04,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 14:20:04,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282434017] [2020-12-22 14:20:04,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:20:04,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:20:04,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:20:04,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:20:04,556 INFO L87 Difference]: Start difference. First operand 5213 states and 7224 transitions. Second operand 3 states. [2020-12-22 14:20:04,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:20:04,892 INFO L93 Difference]: Finished difference Result 11833 states and 16404 transitions. [2020-12-22 14:20:04,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:20:04,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 14:20:04,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:20:04,910 INFO L225 Difference]: With dead ends: 11833 [2020-12-22 14:20:04,910 INFO L226 Difference]: Without dead ends: 6617 [2020-12-22 14:20:04,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 14:20:04,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6617 states. [2020-12-22 14:20:05,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6617 to 6605. [2020-12-22 14:20:05,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6605 states. [2020-12-22 14:20:05,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6605 states to 6605 states and 9148 transitions. [2020-12-22 14:20:05,248 INFO L78 Accepts]: Start accepts. Automaton has 6605 states and 9148 transitions. Word has length 24 [2020-12-22 14:20:05,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:20:05,250 INFO L481 AbstractCegarLoop]: Abstraction has 6605 states and 9148 transitions. [2020-12-22 14:20:05,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:20:05,254 INFO L276 IsEmpty]: Start isEmpty. Operand 6605 states and 9148 transitions. [2020-12-22 14:20:05,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 14:20:05,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:20:05,256 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 14:20:05,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 14:20:05,263 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:20:05,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:20:05,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1100373169, now seen corresponding path program 1 times [2020-12-22 14:20:05,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:20:05,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292985200] [2020-12-22 14:20:05,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:20:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:20:06,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 14:20:06,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292985200] [2020-12-22 14:20:06,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:20:06,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:20:06,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122978548] [2020-12-22 14:20:06,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:20:06,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:20:06,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:20:06,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:20:06,249 INFO L87 Difference]: Start difference. First operand 6605 states and 9148 transitions. Second operand 3 states. [2020-12-22 14:20:09,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:20:09,518 INFO L93 Difference]: Finished difference Result 16483 states and 22886 transitions. [2020-12-22 14:20:09,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:20:09,519 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-12-22 14:20:09,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:20:09,543 INFO L225 Difference]: With dead ends: 16483 [2020-12-22 14:20:09,544 INFO L226 Difference]: Without dead ends: 9881 [2020-12-22 14:20:09,557 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 14:20:09,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9881 states. [2020-12-22 14:20:09,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9881 to 9869. [2020-12-22 14:20:09,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9869 states. [2020-12-22 14:20:09,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9869 states to 9869 states and 13648 transitions. [2020-12-22 14:20:09,992 INFO L78 Accepts]: Start accepts. Automaton has 9869 states and 13648 transitions. Word has length 35 [2020-12-22 14:20:09,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:20:09,996 INFO L481 AbstractCegarLoop]: Abstraction has 9869 states and 13648 transitions. [2020-12-22 14:20:09,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:20:09,996 INFO L276 IsEmpty]: Start isEmpty. Operand 9869 states and 13648 transitions. [2020-12-22 14:20:10,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 14:20:10,000 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:20:10,000 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] [2020-12-22 14:20:10,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 14:20:10,001 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:20:10,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:20:10,001 INFO L82 PathProgramCache]: Analyzing trace with hash 491641491, now seen corresponding path program 1 times [2020-12-22 14:20:10,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:20:10,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598587585] [2020-12-22 14:20:10,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:20:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:20:10,770 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 14:20:10,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598587585] [2020-12-22 14:20:10,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:20:10,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:20:10,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531178523] [2020-12-22 14:20:10,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:20:10,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:20:10,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:20:10,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:20:10,773 INFO L87 Difference]: Start difference. First operand 9869 states and 13648 transitions. Second operand 3 states. [2020-12-22 14:20:11,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:20:11,672 INFO L93 Difference]: Finished difference Result 21004 states and 29115 transitions. [2020-12-22 14:20:11,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:20:11,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-12-22 14:20:11,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:20:11,701 INFO L225 Difference]: With dead ends: 21004 [2020-12-22 14:20:11,701 INFO L226 Difference]: Without dead ends: 11138 [2020-12-22 14:20:11,719 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 14:20:11,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11138 states. [2020-12-22 14:20:12,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11138 to 11101. [2020-12-22 14:20:12,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11101 states. [2020-12-22 14:20:12,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 15428 transitions. [2020-12-22 14:20:12,399 INFO L78 Accepts]: Start accepts. Automaton has 11101 states and 15428 transitions. Word has length 42 [2020-12-22 14:20:12,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:20:12,400 INFO L481 AbstractCegarLoop]: Abstraction has 11101 states and 15428 transitions. [2020-12-22 14:20:12,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:20:12,400 INFO L276 IsEmpty]: Start isEmpty. Operand 11101 states and 15428 transitions. [2020-12-22 14:20:12,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 14:20:12,402 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:20:12,403 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-22 14:20:12,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 14:20:12,403 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:20:12,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:20:12,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1019502293, now seen corresponding path program 1 times [2020-12-22 14:20:12,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:20:12,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529396518] [2020-12-22 14:20:12,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:20:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:20:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 14:20:13,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529396518] [2020-12-22 14:20:13,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:20:13,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:20:13,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857071446] [2020-12-22 14:20:13,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:20:13,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:20:13,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:20:13,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:20:13,403 INFO L87 Difference]: Start difference. First operand 11101 states and 15428 transitions. Second operand 3 states. [2020-12-22 14:20:16,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:20:16,667 INFO L93 Difference]: Finished difference Result 25871 states and 36082 transitions. [2020-12-22 14:20:16,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:20:16,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 14:20:16,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:20:16,708 INFO L225 Difference]: With dead ends: 25871 [2020-12-22 14:20:16,708 INFO L226 Difference]: Without dead ends: 14773 [2020-12-22 14:20:16,728 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 14:20:16,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14773 states. [2020-12-22 14:20:17,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14773 to 14761. [2020-12-22 14:20:17,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14761 states. [2020-12-22 14:20:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14761 states to 14761 states and 20480 transitions. [2020-12-22 14:20:17,279 INFO L78 Accepts]: Start accepts. Automaton has 14761 states and 20480 transitions. Word has length 56 [2020-12-22 14:20:17,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:20:17,282 INFO L481 AbstractCegarLoop]: Abstraction has 14761 states and 20480 transitions. [2020-12-22 14:20:17,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:20:17,282 INFO L276 IsEmpty]: Start isEmpty. Operand 14761 states and 20480 transitions. [2020-12-22 14:20:17,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 14:20:17,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:20:17,287 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] [2020-12-22 14:20:17,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 14:20:17,288 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:20:17,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:20:17,288 INFO L82 PathProgramCache]: Analyzing trace with hash 606612250, now seen corresponding path program 1 times [2020-12-22 14:20:17,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:20:17,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203206277] [2020-12-22 14:20:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:20:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:20:18,157 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 14:20:18,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203206277] [2020-12-22 14:20:18,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:20:18,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:20:18,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199838849] [2020-12-22 14:20:18,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:20:18,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:20:18,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:20:18,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:20:18,164 INFO L87 Difference]: Start difference. First operand 14761 states and 20480 transitions. Second operand 3 states. [2020-12-22 14:20:19,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:20:19,054 INFO L93 Difference]: Finished difference Result 22959 states and 31781 transitions. [2020-12-22 14:20:19,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:20:19,055 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-22 14:20:19,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:20:19,075 INFO L225 Difference]: With dead ends: 22959 [2020-12-22 14:20:19,075 INFO L226 Difference]: Without dead ends: 8201 [2020-12-22 14:20:19,100 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 14:20:19,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8201 states. [2020-12-22 14:20:19,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8201 to 7032. [2020-12-22 14:20:19,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7032 states. [2020-12-22 14:20:19,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7032 states to 7032 states and 9796 transitions. [2020-12-22 14:20:19,337 INFO L78 Accepts]: Start accepts. Automaton has 7032 states and 9796 transitions. Word has length 71 [2020-12-22 14:20:19,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:20:19,337 INFO L481 AbstractCegarLoop]: Abstraction has 7032 states and 9796 transitions. [2020-12-22 14:20:19,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:20:19,337 INFO L276 IsEmpty]: Start isEmpty. Operand 7032 states and 9796 transitions. [2020-12-22 14:20:19,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 14:20:19,339 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:20:19,340 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2020-12-22 14:20:19,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 14:20:19,340 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:20:19,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:20:19,341 INFO L82 PathProgramCache]: Analyzing trace with hash 2036984032, now seen corresponding path program 1 times [2020-12-22 14:20:19,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:20:19,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865417746] [2020-12-22 14:20:19,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:20:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:20:20,442 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 14:20:20,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865417746] [2020-12-22 14:20:20,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:20:20,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 14:20:20,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806202157] [2020-12-22 14:20:20,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 14:20:20,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:20:20,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 14:20:20,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:20:20,445 INFO L87 Difference]: Start difference. First operand 7032 states and 9796 transitions. Second operand 5 states. [2020-12-22 14:20:22,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:20:22,545 INFO L93 Difference]: Finished difference Result 25642 states and 35557 transitions. [2020-12-22 14:20:22,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 14:20:22,546 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-12-22 14:20:22,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:20:22,589 INFO L225 Difference]: With dead ends: 25642 [2020-12-22 14:20:22,589 INFO L226 Difference]: Without dead ends: 18628 [2020-12-22 14:20:22,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 14:20:22,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18628 states. [2020-12-22 14:20:23,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18628 to 8668. [2020-12-22 14:20:23,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8668 states. [2020-12-22 14:20:23,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8668 states to 8668 states and 12157 transitions. [2020-12-22 14:20:23,075 INFO L78 Accepts]: Start accepts. Automaton has 8668 states and 12157 transitions. Word has length 72 [2020-12-22 14:20:23,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:20:23,077 INFO L481 AbstractCegarLoop]: Abstraction has 8668 states and 12157 transitions. [2020-12-22 14:20:23,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 14:20:23,077 INFO L276 IsEmpty]: Start isEmpty. Operand 8668 states and 12157 transitions. [2020-12-22 14:20:23,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 14:20:23,079 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:20:23,079 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2020-12-22 14:20:23,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 14:20:23,080 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:20:23,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:20:23,080 INFO L82 PathProgramCache]: Analyzing trace with hash -272132865, now seen corresponding path program 1 times [2020-12-22 14:20:23,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:20:23,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731126753] [2020-12-22 14:20:23,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:20:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:20:23,971 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 14:20:23,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731126753] [2020-12-22 14:20:23,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:20:23,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:20:23,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537527212] [2020-12-22 14:20:23,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:20:23,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:20:23,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:20:23,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:20:23,974 INFO L87 Difference]: Start difference. First operand 8668 states and 12157 transitions. Second operand 3 states. [2020-12-22 14:20:27,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:20:27,270 INFO L93 Difference]: Finished difference Result 19354 states and 27157 transitions. [2020-12-22 14:20:27,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:20:27,271 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 14:20:27,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:20:27,299 INFO L225 Difference]: With dead ends: 19354 [2020-12-22 14:20:27,299 INFO L226 Difference]: Without dead ends: 10704 [2020-12-22 14:20:27,309 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 14:20:27,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10704 states. [2020-12-22 14:20:27,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10704 to 10304. [2020-12-22 14:20:27,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10304 states. [2020-12-22 14:20:27,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10304 states to 10304 states and 14438 transitions. [2020-12-22 14:20:27,761 INFO L78 Accepts]: Start accepts. Automaton has 10304 states and 14438 transitions. Word has length 73 [2020-12-22 14:20:27,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:20:27,761 INFO L481 AbstractCegarLoop]: Abstraction has 10304 states and 14438 transitions. [2020-12-22 14:20:27,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:20:27,762 INFO L276 IsEmpty]: Start isEmpty. Operand 10304 states and 14438 transitions. [2020-12-22 14:20:27,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 14:20:27,764 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:20:27,764 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2020-12-22 14:20:27,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 14:20:27,765 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:20:27,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:20:27,765 INFO L82 PathProgramCache]: Analyzing trace with hash -698320662, now seen corresponding path program 1 times [2020-12-22 14:20:27,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:20:27,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650889874] [2020-12-22 14:20:27,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:20:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:20:28,596 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 14:20:28,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650889874] [2020-12-22 14:20:28,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:20:28,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:20:28,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457195984] [2020-12-22 14:20:28,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:20:28,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:20:28,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:20:28,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:20:28,599 INFO L87 Difference]: Start difference. First operand 10304 states and 14438 transitions. Second operand 3 states. [2020-12-22 14:20:31,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:20:31,656 INFO L93 Difference]: Finished difference Result 22626 states and 31719 transitions. [2020-12-22 14:20:31,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:20:31,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-22 14:20:31,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:20:31,687 INFO L225 Difference]: With dead ends: 22626 [2020-12-22 14:20:31,688 INFO L226 Difference]: Without dead ends: 12340 [2020-12-22 14:20:31,701 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 14:20:31,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12340 states. [2020-12-22 14:20:32,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12340 to 11940. [2020-12-22 14:20:32,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11940 states. [2020-12-22 14:20:32,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11940 states to 11940 states and 16719 transitions. [2020-12-22 14:20:32,255 INFO L78 Accepts]: Start accepts. Automaton has 11940 states and 16719 transitions. Word has length 74 [2020-12-22 14:20:32,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:20:32,255 INFO L481 AbstractCegarLoop]: Abstraction has 11940 states and 16719 transitions. [2020-12-22 14:20:32,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:20:32,256 INFO L276 IsEmpty]: Start isEmpty. Operand 11940 states and 16719 transitions. [2020-12-22 14:20:32,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 14:20:32,262 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:20:32,263 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2020-12-22 14:20:32,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 14:20:32,263 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:20:32,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:20:32,264 INFO L82 PathProgramCache]: Analyzing trace with hash 572881383, now seen corresponding path program 1 times [2020-12-22 14:20:32,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:20:32,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70671175] [2020-12-22 14:20:32,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:20:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:20:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 14:20:33,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70671175] [2020-12-22 14:20:33,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:20:33,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:20:33,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183755360] [2020-12-22 14:20:33,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:20:33,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:20:33,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:20:33,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:20:33,016 INFO L87 Difference]: Start difference. First operand 11940 states and 16719 transitions. Second operand 4 states. [2020-12-22 14:20:33,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:20:33,956 INFO L93 Difference]: Finished difference Result 26638 states and 37251 transitions. [2020-12-22 14:20:33,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:20:33,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-12-22 14:20:33,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:20:33,982 INFO L225 Difference]: With dead ends: 26638 [2020-12-22 14:20:33,983 INFO L226 Difference]: Without dead ends: 14716 [2020-12-22 14:20:34,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 14:20:34,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14716 states. [2020-12-22 14:20:34,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14716 to 11940. [2020-12-22 14:20:34,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11940 states. [2020-12-22 14:20:34,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11940 states to 11940 states and 16717 transitions. [2020-12-22 14:20:34,673 INFO L78 Accepts]: Start accepts. Automaton has 11940 states and 16717 transitions. Word has length 74 [2020-12-22 14:20:34,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:20:34,673 INFO L481 AbstractCegarLoop]: Abstraction has 11940 states and 16717 transitions. [2020-12-22 14:20:34,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:20:34,674 INFO L276 IsEmpty]: Start isEmpty. Operand 11940 states and 16717 transitions. [2020-12-22 14:20:34,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 14:20:34,676 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:20:34,676 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2020-12-22 14:20:34,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 14:20:34,677 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:20:34,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:20:34,677 INFO L82 PathProgramCache]: Analyzing trace with hash 245961564, now seen corresponding path program 1 times [2020-12-22 14:20:34,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:20:34,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464267944] [2020-12-22 14:20:34,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:20:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:20:35,480 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 14:20:35,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464267944] [2020-12-22 14:20:35,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:20:35,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:20:35,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012682579] [2020-12-22 14:20:35,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:20:35,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:20:35,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:20:35,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:20:35,482 INFO L87 Difference]: Start difference. First operand 11940 states and 16717 transitions. Second operand 4 states. [2020-12-22 14:20:36,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:20:36,415 INFO L93 Difference]: Finished difference Result 26638 states and 37247 transitions. [2020-12-22 14:20:36,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:20:36,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-12-22 14:20:36,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:20:36,440 INFO L225 Difference]: With dead ends: 26638 [2020-12-22 14:20:36,440 INFO L226 Difference]: Without dead ends: 14716 [2020-12-22 14:20:36,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 14:20:36,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14716 states. [2020-12-22 14:20:37,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14716 to 11940. [2020-12-22 14:20:37,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11940 states. [2020-12-22 14:20:37,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11940 states to 11940 states and 16715 transitions. [2020-12-22 14:20:37,200 INFO L78 Accepts]: Start accepts. Automaton has 11940 states and 16715 transitions. Word has length 75 [2020-12-22 14:20:37,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:20:37,200 INFO L481 AbstractCegarLoop]: Abstraction has 11940 states and 16715 transitions. [2020-12-22 14:20:37,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:20:37,201 INFO L276 IsEmpty]: Start isEmpty. Operand 11940 states and 16715 transitions. [2020-12-22 14:20:37,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 14:20:37,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:20:37,203 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2020-12-22 14:20:37,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 14:20:37,203 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:20:37,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:20:37,204 INFO L82 PathProgramCache]: Analyzing trace with hash -544147174, now seen corresponding path program 1 times [2020-12-22 14:20:37,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:20:37,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549173188] [2020-12-22 14:20:37,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:20:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:20:37,947 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 14:20:37,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549173188] [2020-12-22 14:20:37,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:20:37,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:20:37,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961390800] [2020-12-22 14:20:37,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:20:37,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:20:37,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:20:37,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:20:37,953 INFO L87 Difference]: Start difference. First operand 11940 states and 16715 transitions. Second operand 3 states. [2020-12-22 14:20:41,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:20:41,167 INFO L93 Difference]: Finished difference Result 25898 states and 36273 transitions. [2020-12-22 14:20:41,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:20:41,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 14:20:41,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:20:41,187 INFO L225 Difference]: With dead ends: 25898 [2020-12-22 14:20:41,187 INFO L226 Difference]: Without dead ends: 13976 [2020-12-22 14:20:41,199 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 14:20:41,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13976 states. [2020-12-22 14:20:41,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13976 to 13576. [2020-12-22 14:20:41,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13576 states. [2020-12-22 14:20:41,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13576 states to 13576 states and 18996 transitions. [2020-12-22 14:20:41,940 INFO L78 Accepts]: Start accepts. Automaton has 13576 states and 18996 transitions. Word has length 75 [2020-12-22 14:20:41,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:20:41,941 INFO L481 AbstractCegarLoop]: Abstraction has 13576 states and 18996 transitions. [2020-12-22 14:20:41,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:20:41,941 INFO L276 IsEmpty]: Start isEmpty. Operand 13576 states and 18996 transitions. [2020-12-22 14:20:41,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 14:20:41,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:20:41,943 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-12-22 14:20:41,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 14:20:41,944 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:20:41,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:20:41,944 INFO L82 PathProgramCache]: Analyzing trace with hash 173357725, now seen corresponding path program 1 times [2020-12-22 14:20:41,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:20:41,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207545706] [2020-12-22 14:20:41,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:20:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:20:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 14:20:42,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207545706] [2020-12-22 14:20:42,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885636918] [2020-12-22 14:20:42,684 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 14:20:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:20:48,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 13227 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 14:20:48,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 14:20:48,867 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 14:20:48,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 14:20:48,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2020-12-22 14:20:48,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118677969] [2020-12-22 14:20:48,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 14:20:48,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:20:48,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 14:20:48,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-12-22 14:20:48,870 INFO L87 Difference]: Start difference. First operand 13576 states and 18996 transitions. Second operand 8 states. [2020-12-22 14:20:53,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:20:53,948 INFO L93 Difference]: Finished difference Result 40533 states and 56744 transitions. [2020-12-22 14:20:53,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 14:20:53,949 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 75 [2020-12-22 14:20:53,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:20:54,044 INFO L225 Difference]: With dead ends: 40533 [2020-12-22 14:20:54,045 INFO L226 Difference]: Without dead ends: 26967 [2020-12-22 14:20:54,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-12-22 14:20:54,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26967 states. [2020-12-22 14:20:55,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26967 to 13580. [2020-12-22 14:20:55,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13580 states. [2020-12-22 14:20:55,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13580 states to 13580 states and 18994 transitions. [2020-12-22 14:20:55,347 INFO L78 Accepts]: Start accepts. Automaton has 13580 states and 18994 transitions. Word has length 75 [2020-12-22 14:20:55,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:20:55,347 INFO L481 AbstractCegarLoop]: Abstraction has 13580 states and 18994 transitions. [2020-12-22 14:20:55,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 14:20:55,347 INFO L276 IsEmpty]: Start isEmpty. Operand 13580 states and 18994 transitions. [2020-12-22 14:20:55,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 14:20:55,349 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:20:55,349 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] [2020-12-22 14:20:55,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 14:20:55,554 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:20:55,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:20:55,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1583219236, now seen corresponding path program 1 times [2020-12-22 14:20:55,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:20:55,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052865202] [2020-12-22 14:20:55,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:20:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:20:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 14:20:56,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052865202] [2020-12-22 14:20:56,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:20:56,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:20:56,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674493389] [2020-12-22 14:20:56,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:20:56,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:20:56,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:20:56,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:20:56,612 INFO L87 Difference]: Start difference. First operand 13580 states and 18994 transitions. Second operand 3 states. [2020-12-22 14:20:57,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:20:57,271 INFO L93 Difference]: Finished difference Result 27150 states and 37981 transitions. [2020-12-22 14:20:57,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:20:57,273 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-22 14:20:57,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:20:57,295 INFO L225 Difference]: With dead ends: 27150 [2020-12-22 14:20:57,295 INFO L226 Difference]: Without dead ends: 13588 [2020-12-22 14:20:57,310 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 14:20:57,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13588 states. [2020-12-22 14:20:58,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13588 to 13588. [2020-12-22 14:20:58,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13588 states. [2020-12-22 14:20:58,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13588 states to 13588 states and 19002 transitions. [2020-12-22 14:20:58,237 INFO L78 Accepts]: Start accepts. Automaton has 13588 states and 19002 transitions. Word has length 86 [2020-12-22 14:20:58,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:20:58,238 INFO L481 AbstractCegarLoop]: Abstraction has 13588 states and 19002 transitions. [2020-12-22 14:20:58,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:20:58,238 INFO L276 IsEmpty]: Start isEmpty. Operand 13588 states and 19002 transitions. [2020-12-22 14:20:58,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 14:20:58,242 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:20:58,243 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] [2020-12-22 14:20:58,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 14:20:58,243 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:20:58,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:20:58,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1581372194, now seen corresponding path program 1 times [2020-12-22 14:20:58,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:20:58,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381591573] [2020-12-22 14:20:58,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:20:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:20:59,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 14:20:59,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381591573] [2020-12-22 14:20:59,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:20:59,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:20:59,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098604064] [2020-12-22 14:20:59,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:20:59,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:20:59,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:20:59,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:20:59,263 INFO L87 Difference]: Start difference. First operand 13588 states and 19002 transitions. Second operand 3 states. [2020-12-22 14:21:02,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:21:02,526 INFO L93 Difference]: Finished difference Result 27156 states and 37980 transitions. [2020-12-22 14:21:02,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:21:02,527 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-22 14:21:02,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:21:02,547 INFO L225 Difference]: With dead ends: 27156 [2020-12-22 14:21:02,547 INFO L226 Difference]: Without dead ends: 13586 [2020-12-22 14:21:02,705 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 14:21:02,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13586 states. [2020-12-22 14:21:03,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13586 to 13563. [2020-12-22 14:21:03,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13563 states. [2020-12-22 14:21:03,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13563 states to 13563 states and 18950 transitions. [2020-12-22 14:21:03,365 INFO L78 Accepts]: Start accepts. Automaton has 13563 states and 18950 transitions. Word has length 86 [2020-12-22 14:21:03,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:21:03,365 INFO L481 AbstractCegarLoop]: Abstraction has 13563 states and 18950 transitions. [2020-12-22 14:21:03,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:21:03,366 INFO L276 IsEmpty]: Start isEmpty. Operand 13563 states and 18950 transitions. [2020-12-22 14:21:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 14:21:03,367 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:21:03,367 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-12-22 14:21:03,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 14:21:03,368 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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:21:03,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:21:03,368 INFO L82 PathProgramCache]: Analyzing trace with hash -678988661, now seen corresponding path program 1 times [2020-12-22 14:21:03,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:21:03,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38285267] [2020-12-22 14:21:03,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:21:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:21:04,045 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 14:21:04,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38285267] [2020-12-22 14:21:04,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:21:04,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:21:04,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083761270] [2020-12-22 14:21:04,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:21:04,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:21:04,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:21:04,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:21:04,047 INFO L87 Difference]: Start difference. First operand 13563 states and 18950 transitions. Second operand 4 states. [2020-12-22 14:21:06,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:21:06,590 INFO L93 Difference]: Finished difference Result 66935 states and 93632 transitions. [2020-12-22 14:21:06,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:21:06,591 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-12-22 14:21:06,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:21:06,667 INFO L225 Difference]: With dead ends: 66935 [2020-12-22 14:21:06,667 INFO L226 Difference]: Without dead ends: 53390 [2020-12-22 14:21:06,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 14:21:06,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53390 states. [2020-12-22 14:21:07,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53390 to 13567. [2020-12-22 14:21:07,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13567 states. [2020-12-22 14:21:07,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13567 states to 13567 states and 18954 transitions. [2020-12-22 14:21:07,641 INFO L78 Accepts]: Start accepts. Automaton has 13567 states and 18954 transitions. Word has length 87 [2020-12-22 14:21:07,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:21:07,641 INFO L481 AbstractCegarLoop]: Abstraction has 13567 states and 18954 transitions. [2020-12-22 14:21:07,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:21:07,642 INFO L276 IsEmpty]: Start isEmpty. Operand 13567 states and 18954 transitions. [2020-12-22 14:21:07,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 14:21:07,644 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:21:07,644 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-12-22 14:21:07,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 14:21:07,645 INFO L429 AbstractCegarLoop]: === Iteration 21 === [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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:21:07,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:21:07,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1723322813, now seen corresponding path program 1 times [2020-12-22 14:21:07,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:21:07,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203151394] [2020-12-22 14:21:07,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:21:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:21:08,736 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 14:21:08,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203151394] [2020-12-22 14:21:08,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:21:08,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 14:21:08,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812422535] [2020-12-22 14:21:08,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:21:08,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:21:08,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:21:08,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 14:21:08,738 INFO L87 Difference]: Start difference. First operand 13567 states and 18954 transitions. Second operand 3 states. [2020-12-22 14:21:12,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:21:12,968 INFO L93 Difference]: Finished difference Result 40477 states and 56590 transitions. [2020-12-22 14:21:12,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 14:21:12,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-22 14:21:12,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:21:12,997 INFO L225 Difference]: With dead ends: 40477 [2020-12-22 14:21:12,997 INFO L226 Difference]: Without dead ends: 26928 [2020-12-22 14:21:13,008 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 14:21:13,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2020-12-22 14:21:14,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 26855. [2020-12-22 14:21:14,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26855 states. [2020-12-22 14:21:14,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26855 states to 26855 states and 37578 transitions. [2020-12-22 14:21:14,871 INFO L78 Accepts]: Start accepts. Automaton has 26855 states and 37578 transitions. Word has length 89 [2020-12-22 14:21:14,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:21:14,871 INFO L481 AbstractCegarLoop]: Abstraction has 26855 states and 37578 transitions. [2020-12-22 14:21:14,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 14:21:14,871 INFO L276 IsEmpty]: Start isEmpty. Operand 26855 states and 37578 transitions. [2020-12-22 14:21:14,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 14:21:14,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:21:14,875 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-12-22 14:21:14,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 14:21:14,876 INFO L429 AbstractCegarLoop]: === Iteration 22 === [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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:21:14,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:21:14,876 INFO L82 PathProgramCache]: Analyzing trace with hash 2048144034, now seen corresponding path program 1 times [2020-12-22 14:21:14,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:21:14,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137901586] [2020-12-22 14:21:14,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:21:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:21:15,516 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 14:21:15,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137901586] [2020-12-22 14:21:15,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:21:15,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:21:15,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325493874] [2020-12-22 14:21:15,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:21:15,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:21:15,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:21:15,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:21:15,518 INFO L87 Difference]: Start difference. First operand 26855 states and 37578 transitions. Second operand 4 states. [2020-12-22 14:21:22,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:21:22,188 INFO L93 Difference]: Finished difference Result 132621 states and 185794 transitions. [2020-12-22 14:21:22,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 14:21:22,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-12-22 14:21:22,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:21:22,354 INFO L225 Difference]: With dead ends: 132621 [2020-12-22 14:21:22,355 INFO L226 Difference]: Without dead ends: 105784 [2020-12-22 14:21:22,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 14:21:22,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105784 states. [2020-12-22 14:21:24,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105784 to 26771. [2020-12-22 14:21:24,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26771 states. [2020-12-22 14:21:24,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26771 states to 26771 states and 37458 transitions. [2020-12-22 14:21:24,879 INFO L78 Accepts]: Start accepts. Automaton has 26771 states and 37458 transitions. Word has length 92 [2020-12-22 14:21:24,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:21:24,879 INFO L481 AbstractCegarLoop]: Abstraction has 26771 states and 37458 transitions. [2020-12-22 14:21:24,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:21:24,879 INFO L276 IsEmpty]: Start isEmpty. Operand 26771 states and 37458 transitions. [2020-12-22 14:21:24,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 14:21:24,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:21:24,886 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-12-22 14:21:24,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 14:21:24,886 INFO L429 AbstractCegarLoop]: === Iteration 23 === [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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:21:24,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:21:24,887 INFO L82 PathProgramCache]: Analyzing trace with hash -188643836, now seen corresponding path program 1 times [2020-12-22 14:21:24,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:21:24,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040298789] [2020-12-22 14:21:24,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:21:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:21:25,614 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 14:21:25,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040298789] [2020-12-22 14:21:25,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629835289] [2020-12-22 14:21:25,615 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 14:21:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:21:31,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 13401 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 14:21:31,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 14:21:31,552 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 14:21:31,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 14:21:31,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2020-12-22 14:21:31,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815123139] [2020-12-22 14:21:31,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:21:31,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:21:31,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:21:31,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 14:21:31,554 INFO L87 Difference]: Start difference. First operand 26771 states and 37458 transitions. Second operand 4 states. [2020-12-22 14:21:38,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:21:38,930 INFO L93 Difference]: Finished difference Result 80279 states and 112329 transitions. [2020-12-22 14:21:38,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:21:38,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-12-22 14:21:38,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:21:39,034 INFO L225 Difference]: With dead ends: 80279 [2020-12-22 14:21:39,034 INFO L226 Difference]: Without dead ends: 80271 [2020-12-22 14:21:39,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 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 14:21:39,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80271 states. [2020-12-22 14:21:44,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80271 to 80183. [2020-12-22 14:21:44,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80183 states. [2020-12-22 14:21:44,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80183 states to 80183 states and 112218 transitions. [2020-12-22 14:21:44,434 INFO L78 Accepts]: Start accepts. Automaton has 80183 states and 112218 transitions. Word has length 97 [2020-12-22 14:21:44,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:21:44,434 INFO L481 AbstractCegarLoop]: Abstraction has 80183 states and 112218 transitions. [2020-12-22 14:21:44,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:21:44,435 INFO L276 IsEmpty]: Start isEmpty. Operand 80183 states and 112218 transitions. [2020-12-22 14:21:44,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 14:21:44,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:21:44,444 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2020-12-22 14:21:44,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 14:21:44,656 INFO L429 AbstractCegarLoop]: === Iteration 24 === [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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:21:44,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:21:44,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1901741403, now seen corresponding path program 1 times [2020-12-22 14:21:44,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:21:44,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999206350] [2020-12-22 14:21:44,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:21:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:21:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 14:21:45,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999206350] [2020-12-22 14:21:45,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 14:21:45,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 14:21:45,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7856539] [2020-12-22 14:21:45,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 14:21:45,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:21:45,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 14:21:45,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 14:21:45,614 INFO L87 Difference]: Start difference. First operand 80183 states and 112218 transitions. Second operand 4 states. [2020-12-22 14:21:52,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 14:21:52,199 INFO L93 Difference]: Finished difference Result 101388 states and 141492 transitions. [2020-12-22 14:21:52,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 14:21:52,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-12-22 14:21:52,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 14:21:52,335 INFO L225 Difference]: With dead ends: 101388 [2020-12-22 14:21:52,335 INFO L226 Difference]: Without dead ends: 96398 [2020-12-22 14:21:52,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 14:21:52,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96398 states. [2020-12-22 14:21:58,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96398 to 80183. [2020-12-22 14:21:58,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80183 states. [2020-12-22 14:21:58,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80183 states to 80183 states and 112206 transitions. [2020-12-22 14:21:58,449 INFO L78 Accepts]: Start accepts. Automaton has 80183 states and 112206 transitions. Word has length 98 [2020-12-22 14:21:58,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 14:21:58,450 INFO L481 AbstractCegarLoop]: Abstraction has 80183 states and 112206 transitions. [2020-12-22 14:21:58,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 14:21:58,450 INFO L276 IsEmpty]: Start isEmpty. Operand 80183 states and 112206 transitions. [2020-12-22 14:21:58,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 14:21:58,464 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 14:21:58,464 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-12-22 14:21:58,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 14:21:58,465 INFO L429 AbstractCegarLoop]: === Iteration 25 === [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.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 14:21:58,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 14:21:58,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1178813530, now seen corresponding path program 1 times [2020-12-22 14:21:58,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 14:21:58,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678898379] [2020-12-22 14:21:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 14:21:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:21:59,102 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 14:21:59,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678898379] [2020-12-22 14:21:59,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651016865] [2020-12-22 14:21:59,103 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 14:22:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 14:22:04,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 13386 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 14:22:04,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 14:22:04,957 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 14:22:04,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 14:22:04,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2020-12-22 14:22:04,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953178034] [2020-12-22 14:22:04,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 14:22:04,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 14:22:04,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 14:22:04,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 14:22:04,959 INFO L87 Difference]: Start difference. First operand 80183 states and 112206 transitions. Second operand 3 states.