/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-validator-v0.8/linux-stable-4ee267b-1-130_7a-drivers--hwmon--ibmaem.ko-entry_point_ldv-val-v0.8.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:49:16,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:49:16,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:49:16,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:49:16,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:49:16,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:49:16,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:49:16,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:49:16,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:49:16,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:49:16,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:49:16,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:49:16,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:49:16,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:49:16,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:49:16,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:49:16,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:49:16,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:49:16,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:49:16,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:49:16,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:49:16,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:49:16,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:49:16,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:49:16,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 13:49:16,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:49:16,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:49:16,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:49:16,808 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:49:16,858 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:49:16,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:49:16,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:49:16,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:49:16,863 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:49:16,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:49:16,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:49:16,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:49:16,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:49:16,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:49:16,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:49:16,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:49:16,866 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:49:16,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:49:16,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:49:16,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:49:16,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:49:16,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:49:16,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:49:16,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:49:16,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:49:16,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:49:16,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:49:16,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:49:16,869 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:49:16,869 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:49:17,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:49:17,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:49:17,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:49:17,265 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:49:17,266 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:49:17,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-4ee267b-1-130_7a-drivers--hwmon--ibmaem.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-12-22 13:49:17,355 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/269431b62/b99aac0d6015431c8d30ee939cd9e7c3/FLAG973b6ccc9 [2020-12-22 13:49:18,193 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:49:18,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-4ee267b-1-130_7a-drivers--hwmon--ibmaem.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-12-22 13:49:18,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/269431b62/b99aac0d6015431c8d30ee939cd9e7c3/FLAG973b6ccc9 [2020-12-22 13:49:18,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/269431b62/b99aac0d6015431c8d30ee939cd9e7c3 [2020-12-22 13:49:18,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:49:18,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:49:18,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:49:18,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:49:18,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:49:18,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:49:18" (1/1) ... [2020-12-22 13:49:18,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66b73d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:18, skipping insertion in model container [2020-12-22 13:49:18,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:49:18" (1/1) ... [2020-12-22 13:49:18,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:49:18,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:49:19,428 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-validator-v0.8/linux-stable-4ee267b-1-130_7a-drivers--hwmon--ibmaem.ko-entry_point_ldv-val-v0.8.cil.out.i[120657,120670] [2020-12-22 13:49:19,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:49:19,489 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:49:19,676 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-validator-v0.8/linux-stable-4ee267b-1-130_7a-drivers--hwmon--ibmaem.ko-entry_point_ldv-val-v0.8.cil.out.i[120657,120670] [2020-12-22 13:49:19,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:49:20,055 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:49:20,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:20 WrapperNode [2020-12-22 13:49:20,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:49:20,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:49:20,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:49:20,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:49:20,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:20" (1/1) ... [2020-12-22 13:49:20,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:20" (1/1) ... [2020-12-22 13:49:20,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:49:20,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:49:20,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:49:20,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:49:20,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:20" (1/1) ... [2020-12-22 13:49:20,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:20" (1/1) ... [2020-12-22 13:49:20,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:20" (1/1) ... [2020-12-22 13:49:20,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:20" (1/1) ... [2020-12-22 13:49:20,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:20" (1/1) ... [2020-12-22 13:49:20,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:20" (1/1) ... [2020-12-22 13:49:20,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:20" (1/1) ... [2020-12-22 13:49:20,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:49:20,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:49:20,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:49:20,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:49:20,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:20" (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 13:49:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:49:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:49:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:49:20,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:49:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:49:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:49:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:49:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:49:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-22 13:49:20,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:49:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:49:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:49:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:49:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:49:20,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:49:20,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:49:25,138 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:49:25,138 INFO L299 CfgBuilder]: Removed 582 assume(true) statements. [2020-12-22 13:49:25,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:49:25 BoogieIcfgContainer [2020-12-22 13:49:25,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:49:25,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:49:25,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:49:25,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:49:25,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:49:18" (1/3) ... [2020-12-22 13:49:25,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c08148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:49:25, skipping insertion in model container [2020-12-22 13:49:25,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:49:20" (2/3) ... [2020-12-22 13:49:25,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c08148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:49:25, skipping insertion in model container [2020-12-22 13:49:25,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:49:25" (3/3) ... [2020-12-22 13:49:25,150 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-4ee267b-1-130_7a-drivers--hwmon--ibmaem.ko-entry_point_ldv-val-v0.8.cil.out.i [2020-12-22 13:49:25,158 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:49:25,164 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-22 13:49:25,184 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-22 13:49:25,217 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:49:25,217 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:49:25,217 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:49:25,217 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:49:25,217 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:49:25,218 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:49:25,218 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:49:25,218 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:49:25,244 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states. [2020-12-22 13:49:25,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 13:49:25,263 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:25,265 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:25,266 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:25,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:25,273 INFO L82 PathProgramCache]: Analyzing trace with hash -38838034, now seen corresponding path program 1 times [2020-12-22 13:49:25,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:25,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810269341] [2020-12-22 13:49:25,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:25,985 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 13:49:25,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810269341] [2020-12-22 13:49:25,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:25,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 13:49:25,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353309920] [2020-12-22 13:49:25,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 13:49:25,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:26,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 13:49:26,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 13:49:26,013 INFO L87 Difference]: Start difference. First operand 510 states. Second operand 2 states. [2020-12-22 13:49:26,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:26,126 INFO L93 Difference]: Finished difference Result 1016 states and 1335 transitions. [2020-12-22 13:49:26,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 13:49:26,132 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 106 [2020-12-22 13:49:26,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:26,160 INFO L225 Difference]: With dead ends: 1016 [2020-12-22 13:49:26,160 INFO L226 Difference]: Without dead ends: 471 [2020-12-22 13:49:26,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 13:49:26,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-12-22 13:49:26,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2020-12-22 13:49:26,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-12-22 13:49:26,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 581 transitions. [2020-12-22 13:49:26,315 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 581 transitions. Word has length 106 [2020-12-22 13:49:26,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:26,316 INFO L481 AbstractCegarLoop]: Abstraction has 471 states and 581 transitions. [2020-12-22 13:49:26,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 13:49:26,317 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 581 transitions. [2020-12-22 13:49:26,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 13:49:26,331 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:26,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:26,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:49:26,334 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:26,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:26,337 INFO L82 PathProgramCache]: Analyzing trace with hash -242320004, now seen corresponding path program 1 times [2020-12-22 13:49:26,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:26,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087040317] [2020-12-22 13:49:26,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:26,764 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 13:49:26,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087040317] [2020-12-22 13:49:26,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:26,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:26,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701407437] [2020-12-22 13:49:26,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:26,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:26,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:26,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:26,775 INFO L87 Difference]: Start difference. First operand 471 states and 581 transitions. Second operand 3 states. [2020-12-22 13:49:26,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:26,883 INFO L93 Difference]: Finished difference Result 951 states and 1189 transitions. [2020-12-22 13:49:26,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:26,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 13:49:26,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:26,888 INFO L225 Difference]: With dead ends: 951 [2020-12-22 13:49:26,888 INFO L226 Difference]: Without dead ends: 525 [2020-12-22 13:49:26,890 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 13:49:26,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-12-22 13:49:26,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2020-12-22 13:49:26,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2020-12-22 13:49:26,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 654 transitions. [2020-12-22 13:49:26,909 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 654 transitions. Word has length 106 [2020-12-22 13:49:26,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:26,910 INFO L481 AbstractCegarLoop]: Abstraction has 525 states and 654 transitions. [2020-12-22 13:49:26,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:26,910 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 654 transitions. [2020-12-22 13:49:26,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 13:49:26,912 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:26,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:26,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:49:26,913 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:26,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:26,914 INFO L82 PathProgramCache]: Analyzing trace with hash 38091681, now seen corresponding path program 1 times [2020-12-22 13:49:26,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:26,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648393148] [2020-12-22 13:49:26,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:27,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:49:27,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648393148] [2020-12-22 13:49:27,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:27,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:49:27,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792318949] [2020-12-22 13:49:27,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:49:27,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:27,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:49:27,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:49:27,298 INFO L87 Difference]: Start difference. First operand 525 states and 654 transitions. Second operand 4 states. [2020-12-22 13:49:27,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:27,822 INFO L93 Difference]: Finished difference Result 1610 states and 2039 transitions. [2020-12-22 13:49:27,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:49:27,829 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2020-12-22 13:49:27,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:27,839 INFO L225 Difference]: With dead ends: 1610 [2020-12-22 13:49:27,839 INFO L226 Difference]: Without dead ends: 1130 [2020-12-22 13:49:27,841 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 13:49:27,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2020-12-22 13:49:27,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 527. [2020-12-22 13:49:27,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-12-22 13:49:27,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 656 transitions. [2020-12-22 13:49:27,869 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 656 transitions. Word has length 118 [2020-12-22 13:49:27,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:27,872 INFO L481 AbstractCegarLoop]: Abstraction has 527 states and 656 transitions. [2020-12-22 13:49:27,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:49:27,873 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 656 transitions. [2020-12-22 13:49:27,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 13:49:27,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:27,876 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:27,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:49:27,877 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:27,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:27,877 INFO L82 PathProgramCache]: Analyzing trace with hash -442988577, now seen corresponding path program 1 times [2020-12-22 13:49:27,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:27,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458345051] [2020-12-22 13:49:27,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:28,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 13:49:28,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458345051] [2020-12-22 13:49:28,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:28,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:28,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72185591] [2020-12-22 13:49:28,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:28,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:28,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:28,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:28,219 INFO L87 Difference]: Start difference. First operand 527 states and 656 transitions. Second operand 3 states. [2020-12-22 13:49:28,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:28,258 INFO L93 Difference]: Finished difference Result 1011 states and 1268 transitions. [2020-12-22 13:49:28,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:28,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2020-12-22 13:49:28,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:28,263 INFO L225 Difference]: With dead ends: 1011 [2020-12-22 13:49:28,264 INFO L226 Difference]: Without dead ends: 529 [2020-12-22 13:49:28,265 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 13:49:28,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-12-22 13:49:28,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 528. [2020-12-22 13:49:28,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-12-22 13:49:28,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 657 transitions. [2020-12-22 13:49:28,292 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 657 transitions. Word has length 118 [2020-12-22 13:49:28,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:28,296 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 657 transitions. [2020-12-22 13:49:28,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:28,296 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 657 transitions. [2020-12-22 13:49:28,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-22 13:49:28,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:28,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:28,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 13:49:28,300 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:28,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:28,302 INFO L82 PathProgramCache]: Analyzing trace with hash 23502531, now seen corresponding path program 1 times [2020-12-22 13:49:28,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:28,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121291472] [2020-12-22 13:49:28,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:49:28,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121291472] [2020-12-22 13:49:28,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:28,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:49:28,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194833190] [2020-12-22 13:49:28,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:49:28,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:28,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:49:28,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:49:28,796 INFO L87 Difference]: Start difference. First operand 528 states and 657 transitions. Second operand 4 states. [2020-12-22 13:49:28,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:28,937 INFO L93 Difference]: Finished difference Result 2026 states and 2582 transitions. [2020-12-22 13:49:28,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:49:28,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-12-22 13:49:28,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:28,948 INFO L225 Difference]: With dead ends: 2026 [2020-12-22 13:49:28,948 INFO L226 Difference]: Without dead ends: 1543 [2020-12-22 13:49:28,950 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 13:49:28,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2020-12-22 13:49:28,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 530. [2020-12-22 13:49:28,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2020-12-22 13:49:28,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 659 transitions. [2020-12-22 13:49:28,979 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 659 transitions. Word has length 120 [2020-12-22 13:49:28,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:28,981 INFO L481 AbstractCegarLoop]: Abstraction has 530 states and 659 transitions. [2020-12-22 13:49:28,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:49:28,982 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 659 transitions. [2020-12-22 13:49:28,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-22 13:49:28,987 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:28,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:28,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 13:49:28,988 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:28,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:28,989 INFO L82 PathProgramCache]: Analyzing trace with hash -199075039, now seen corresponding path program 1 times [2020-12-22 13:49:28,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:28,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46735901] [2020-12-22 13:49:28,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:29,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:49:29,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46735901] [2020-12-22 13:49:29,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:29,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:49:29,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784095067] [2020-12-22 13:49:29,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:49:29,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:29,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:49:29,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:49:29,284 INFO L87 Difference]: Start difference. First operand 530 states and 659 transitions. Second operand 4 states. [2020-12-22 13:49:29,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:29,466 INFO L93 Difference]: Finished difference Result 2046 states and 2597 transitions. [2020-12-22 13:49:29,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:49:29,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-12-22 13:49:29,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:29,475 INFO L225 Difference]: With dead ends: 2046 [2020-12-22 13:49:29,475 INFO L226 Difference]: Without dead ends: 1561 [2020-12-22 13:49:29,476 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 13:49:29,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2020-12-22 13:49:29,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 532. [2020-12-22 13:49:29,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2020-12-22 13:49:29,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 661 transitions. [2020-12-22 13:49:29,510 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 661 transitions. Word has length 127 [2020-12-22 13:49:29,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:29,511 INFO L481 AbstractCegarLoop]: Abstraction has 532 states and 661 transitions. [2020-12-22 13:49:29,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:49:29,513 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 661 transitions. [2020-12-22 13:49:29,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-22 13:49:29,515 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:29,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:29,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 13:49:29,516 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:29,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:29,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1220143393, now seen corresponding path program 1 times [2020-12-22 13:49:29,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:29,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470475533] [2020-12-22 13:49:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:30,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:49:30,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470475533] [2020-12-22 13:49:30,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:30,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:49:30,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213377776] [2020-12-22 13:49:30,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:49:30,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:30,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:49:30,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:49:30,167 INFO L87 Difference]: Start difference. First operand 532 states and 661 transitions. Second operand 5 states. [2020-12-22 13:49:31,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:31,385 INFO L93 Difference]: Finished difference Result 1474 states and 1857 transitions. [2020-12-22 13:49:31,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:49:31,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-12-22 13:49:31,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:31,393 INFO L225 Difference]: With dead ends: 1474 [2020-12-22 13:49:31,394 INFO L226 Difference]: Without dead ends: 1458 [2020-12-22 13:49:31,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:49:31,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2020-12-22 13:49:31,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 995. [2020-12-22 13:49:31,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-12-22 13:49:31,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1251 transitions. [2020-12-22 13:49:31,445 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1251 transitions. Word has length 127 [2020-12-22 13:49:31,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:31,445 INFO L481 AbstractCegarLoop]: Abstraction has 995 states and 1251 transitions. [2020-12-22 13:49:31,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:49:31,446 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1251 transitions. [2020-12-22 13:49:31,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-22 13:49:31,448 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:31,448 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:31,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 13:49:31,449 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:31,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:31,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1283400906, now seen corresponding path program 1 times [2020-12-22 13:49:31,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:31,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843923411] [2020-12-22 13:49:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:31,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 13:49:31,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843923411] [2020-12-22 13:49:31,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:31,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:49:31,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741974187] [2020-12-22 13:49:31,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:49:31,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:31,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:49:31,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:49:31,997 INFO L87 Difference]: Start difference. First operand 995 states and 1251 transitions. Second operand 6 states. [2020-12-22 13:49:34,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:34,994 INFO L93 Difference]: Finished difference Result 1482 states and 1865 transitions. [2020-12-22 13:49:34,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:49:34,995 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2020-12-22 13:49:34,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:35,002 INFO L225 Difference]: With dead ends: 1482 [2020-12-22 13:49:35,003 INFO L226 Difference]: Without dead ends: 1466 [2020-12-22 13:49:35,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:49:35,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2020-12-22 13:49:35,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1466. [2020-12-22 13:49:35,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1466 states. [2020-12-22 13:49:35,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 1849 transitions. [2020-12-22 13:49:35,072 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 1849 transitions. Word has length 135 [2020-12-22 13:49:35,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:35,073 INFO L481 AbstractCegarLoop]: Abstraction has 1466 states and 1849 transitions. [2020-12-22 13:49:35,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:49:35,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 1849 transitions. [2020-12-22 13:49:35,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 13:49:35,076 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:35,076 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:35,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 13:49:35,077 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:35,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:35,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1345522381, now seen corresponding path program 1 times [2020-12-22 13:49:35,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:35,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701550393] [2020-12-22 13:49:35,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:49:35,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701550393] [2020-12-22 13:49:35,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:35,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:49:35,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948505545] [2020-12-22 13:49:35,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:49:35,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:35,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:49:35,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:49:35,408 INFO L87 Difference]: Start difference. First operand 1466 states and 1849 transitions. Second operand 4 states. [2020-12-22 13:49:38,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:38,379 INFO L93 Difference]: Finished difference Result 3842 states and 4888 transitions. [2020-12-22 13:49:38,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:49:38,390 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-12-22 13:49:38,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:38,402 INFO L225 Difference]: With dead ends: 3842 [2020-12-22 13:49:38,402 INFO L226 Difference]: Without dead ends: 2421 [2020-12-22 13:49:38,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 13:49:38,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2020-12-22 13:49:38,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 1472. [2020-12-22 13:49:38,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1472 states. [2020-12-22 13:49:38,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 1855 transitions. [2020-12-22 13:49:38,524 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 1855 transitions. Word has length 145 [2020-12-22 13:49:38,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:38,524 INFO L481 AbstractCegarLoop]: Abstraction has 1472 states and 1855 transitions. [2020-12-22 13:49:38,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:49:38,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 1855 transitions. [2020-12-22 13:49:38,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 13:49:38,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:38,528 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:38,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 13:49:38,528 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:38,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:38,529 INFO L82 PathProgramCache]: Analyzing trace with hash 722602251, now seen corresponding path program 1 times [2020-12-22 13:49:38,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:38,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178217228] [2020-12-22 13:49:38,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:38,748 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:49:38,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178217228] [2020-12-22 13:49:38,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:38,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:49:38,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229267931] [2020-12-22 13:49:38,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:49:38,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:38,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:49:38,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:49:38,751 INFO L87 Difference]: Start difference. First operand 1472 states and 1855 transitions. Second operand 4 states. [2020-12-22 13:49:40,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:40,041 INFO L93 Difference]: Finished difference Result 3869 states and 4909 transitions. [2020-12-22 13:49:40,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:49:40,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-12-22 13:49:40,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:40,059 INFO L225 Difference]: With dead ends: 3869 [2020-12-22 13:49:40,060 INFO L226 Difference]: Without dead ends: 2442 [2020-12-22 13:49:40,062 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 13:49:40,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2020-12-22 13:49:40,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 1478. [2020-12-22 13:49:40,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1478 states. [2020-12-22 13:49:40,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 1861 transitions. [2020-12-22 13:49:40,177 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 1861 transitions. Word has length 147 [2020-12-22 13:49:40,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:40,177 INFO L481 AbstractCegarLoop]: Abstraction has 1478 states and 1861 transitions. [2020-12-22 13:49:40,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:49:40,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 1861 transitions. [2020-12-22 13:49:40,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 13:49:40,181 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:40,181 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:40,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 13:49:40,181 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:40,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:40,182 INFO L82 PathProgramCache]: Analyzing trace with hash 737343163, now seen corresponding path program 1 times [2020-12-22 13:49:40,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:40,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375841142] [2020-12-22 13:49:40,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:40,450 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:49:40,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375841142] [2020-12-22 13:49:40,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:40,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:49:40,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753090924] [2020-12-22 13:49:40,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:49:40,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:40,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:49:40,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:49:40,454 INFO L87 Difference]: Start difference. First operand 1478 states and 1861 transitions. Second operand 4 states. [2020-12-22 13:49:42,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:42,222 INFO L93 Difference]: Finished difference Result 3872 states and 4918 transitions. [2020-12-22 13:49:42,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:49:42,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-12-22 13:49:42,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:42,243 INFO L225 Difference]: With dead ends: 3872 [2020-12-22 13:49:42,243 INFO L226 Difference]: Without dead ends: 2439 [2020-12-22 13:49:42,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 13:49:42,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2020-12-22 13:49:42,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 1478. [2020-12-22 13:49:42,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1478 states. [2020-12-22 13:49:42,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 1861 transitions. [2020-12-22 13:49:42,361 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 1861 transitions. Word has length 147 [2020-12-22 13:49:42,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:42,362 INFO L481 AbstractCegarLoop]: Abstraction has 1478 states and 1861 transitions. [2020-12-22 13:49:42,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:49:42,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 1861 transitions. [2020-12-22 13:49:42,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 13:49:42,365 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:42,365 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:42,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 13:49:42,365 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:42,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:42,366 INFO L82 PathProgramCache]: Analyzing trace with hash -2084873882, now seen corresponding path program 1 times [2020-12-22 13:49:42,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:42,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91461865] [2020-12-22 13:49:42,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:42,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:49:42,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91461865] [2020-12-22 13:49:42,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:42,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:42,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697010585] [2020-12-22 13:49:42,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:42,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:42,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:42,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:42,613 INFO L87 Difference]: Start difference. First operand 1478 states and 1861 transitions. Second operand 3 states. [2020-12-22 13:49:43,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:43,591 INFO L93 Difference]: Finished difference Result 2914 states and 3681 transitions. [2020-12-22 13:49:43,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:43,592 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-12-22 13:49:43,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:43,600 INFO L225 Difference]: With dead ends: 2914 [2020-12-22 13:49:43,600 INFO L226 Difference]: Without dead ends: 1481 [2020-12-22 13:49:43,603 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 13:49:43,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2020-12-22 13:49:43,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1481. [2020-12-22 13:49:43,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1481 states. [2020-12-22 13:49:43,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 1864 transitions. [2020-12-22 13:49:43,700 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 1864 transitions. Word has length 148 [2020-12-22 13:49:43,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:43,700 INFO L481 AbstractCegarLoop]: Abstraction has 1481 states and 1864 transitions. [2020-12-22 13:49:43,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:43,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 1864 transitions. [2020-12-22 13:49:43,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 13:49:43,703 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:43,704 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:43,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 13:49:43,704 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:43,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:43,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1242742760, now seen corresponding path program 1 times [2020-12-22 13:49:43,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:43,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542831807] [2020-12-22 13:49:43,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:44,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:49:44,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542831807] [2020-12-22 13:49:44,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:44,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:49:44,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145683027] [2020-12-22 13:49:44,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:49:44,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:44,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:49:44,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:49:44,181 INFO L87 Difference]: Start difference. First operand 1481 states and 1864 transitions. Second operand 5 states. [2020-12-22 13:49:44,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:44,751 INFO L93 Difference]: Finished difference Result 5911 states and 7575 transitions. [2020-12-22 13:49:44,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:49:44,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-12-22 13:49:44,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:44,775 INFO L225 Difference]: With dead ends: 5911 [2020-12-22 13:49:44,776 INFO L226 Difference]: Without dead ends: 4475 [2020-12-22 13:49:44,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:49:44,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4475 states. [2020-12-22 13:49:44,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4475 to 1490. [2020-12-22 13:49:44,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1490 states. [2020-12-22 13:49:44,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 1873 transitions. [2020-12-22 13:49:44,936 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 1873 transitions. Word has length 148 [2020-12-22 13:49:44,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:44,936 INFO L481 AbstractCegarLoop]: Abstraction has 1490 states and 1873 transitions. [2020-12-22 13:49:44,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:49:44,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 1873 transitions. [2020-12-22 13:49:44,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 13:49:44,939 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:44,939 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:44,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 13:49:44,940 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:44,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:44,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1493147347, now seen corresponding path program 1 times [2020-12-22 13:49:44,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:44,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461276230] [2020-12-22 13:49:44,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:45,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:49:45,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461276230] [2020-12-22 13:49:45,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:45,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:49:45,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450280032] [2020-12-22 13:49:45,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:49:45,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:45,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:49:45,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:49:45,196 INFO L87 Difference]: Start difference. First operand 1490 states and 1873 transitions. Second operand 4 states. [2020-12-22 13:49:46,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:46,684 INFO L93 Difference]: Finished difference Result 3917 states and 4957 transitions. [2020-12-22 13:49:46,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:49:46,694 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-12-22 13:49:46,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:46,706 INFO L225 Difference]: With dead ends: 3917 [2020-12-22 13:49:46,706 INFO L226 Difference]: Without dead ends: 2472 [2020-12-22 13:49:46,710 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 13:49:46,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2020-12-22 13:49:46,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1490. [2020-12-22 13:49:46,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1490 states. [2020-12-22 13:49:46,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 1873 transitions. [2020-12-22 13:49:46,882 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 1873 transitions. Word has length 149 [2020-12-22 13:49:46,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:46,883 INFO L481 AbstractCegarLoop]: Abstraction has 1490 states and 1873 transitions. [2020-12-22 13:49:46,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:49:46,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 1873 transitions. [2020-12-22 13:49:46,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 13:49:46,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:46,886 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:46,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 13:49:46,887 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:46,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:46,887 INFO L82 PathProgramCache]: Analyzing trace with hash 109974458, now seen corresponding path program 1 times [2020-12-22 13:49:46,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:46,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838151644] [2020-12-22 13:49:46,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:49:47,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838151644] [2020-12-22 13:49:47,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:47,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:47,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430963942] [2020-12-22 13:49:47,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:47,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:47,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:47,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:47,092 INFO L87 Difference]: Start difference. First operand 1490 states and 1873 transitions. Second operand 3 states. [2020-12-22 13:49:47,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:47,550 INFO L93 Difference]: Finished difference Result 2938 states and 3705 transitions. [2020-12-22 13:49:47,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:47,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 151 [2020-12-22 13:49:47,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:47,558 INFO L225 Difference]: With dead ends: 2938 [2020-12-22 13:49:47,559 INFO L226 Difference]: Without dead ends: 1493 [2020-12-22 13:49:47,563 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 13:49:47,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2020-12-22 13:49:47,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1493. [2020-12-22 13:49:47,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1493 states. [2020-12-22 13:49:47,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 1876 transitions. [2020-12-22 13:49:47,754 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 1876 transitions. Word has length 151 [2020-12-22 13:49:47,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:47,755 INFO L481 AbstractCegarLoop]: Abstraction has 1493 states and 1876 transitions. [2020-12-22 13:49:47,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:47,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 1876 transitions. [2020-12-22 13:49:47,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 13:49:47,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:47,759 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:47,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 13:49:47,760 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:47,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:47,760 INFO L82 PathProgramCache]: Analyzing trace with hash 55581560, now seen corresponding path program 1 times [2020-12-22 13:49:47,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:47,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078956733] [2020-12-22 13:49:47,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:47,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:49:47,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078956733] [2020-12-22 13:49:47,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:47,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:47,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967183922] [2020-12-22 13:49:47,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:47,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:47,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:47,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:47,963 INFO L87 Difference]: Start difference. First operand 1493 states and 1876 transitions. Second operand 3 states. [2020-12-22 13:49:48,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:48,099 INFO L93 Difference]: Finished difference Result 2947 states and 3714 transitions. [2020-12-22 13:49:48,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:48,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 151 [2020-12-22 13:49:48,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:48,124 INFO L225 Difference]: With dead ends: 2947 [2020-12-22 13:49:48,126 INFO L226 Difference]: Without dead ends: 1499 [2020-12-22 13:49:48,133 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 13:49:48,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2020-12-22 13:49:48,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1496. [2020-12-22 13:49:48,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1496 states. [2020-12-22 13:49:48,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 1879 transitions. [2020-12-22 13:49:48,264 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 1879 transitions. Word has length 151 [2020-12-22 13:49:48,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:48,264 INFO L481 AbstractCegarLoop]: Abstraction has 1496 states and 1879 transitions. [2020-12-22 13:49:48,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:48,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 1879 transitions. [2020-12-22 13:49:48,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 13:49:48,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:48,268 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:48,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 13:49:48,268 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:48,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:48,269 INFO L82 PathProgramCache]: Analyzing trace with hash -522470724, now seen corresponding path program 1 times [2020-12-22 13:49:48,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:48,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399826466] [2020-12-22 13:49:48,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:49:48,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399826466] [2020-12-22 13:49:48,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40432087] [2020-12-22 13:49:48,467 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 13:49:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:49,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 2603 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 13:49:49,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:49:49,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:49:49,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:49:49,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 13:49:49,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695739811] [2020-12-22 13:49:49,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:49:49,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:49,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:49:49,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:49:49,480 INFO L87 Difference]: Start difference. First operand 1496 states and 1879 transitions. Second operand 5 states. [2020-12-22 13:49:49,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:49,715 INFO L93 Difference]: Finished difference Result 2953 states and 3720 transitions. [2020-12-22 13:49:49,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:49:49,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-12-22 13:49:49,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:49,720 INFO L225 Difference]: With dead ends: 2953 [2020-12-22 13:49:49,720 INFO L226 Difference]: Without dead ends: 1502 [2020-12-22 13:49:49,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:49:49,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2020-12-22 13:49:49,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1502. [2020-12-22 13:49:49,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1502 states. [2020-12-22 13:49:49,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 1885 transitions. [2020-12-22 13:49:49,918 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 1885 transitions. Word has length 153 [2020-12-22 13:49:49,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:49,918 INFO L481 AbstractCegarLoop]: Abstraction has 1502 states and 1885 transitions. [2020-12-22 13:49:49,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:49:49,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 1885 transitions. [2020-12-22 13:49:49,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 13:49:49,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:49,922 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:50,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 13:49:50,138 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:50,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:50,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1979934464, now seen corresponding path program 2 times [2020-12-22 13:49:50,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:50,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267106158] [2020-12-22 13:49:50,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:50,411 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:49:50,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267106158] [2020-12-22 13:49:50,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:50,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:49:50,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106404757] [2020-12-22 13:49:50,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:49:50,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:50,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:49:50,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:49:50,416 INFO L87 Difference]: Start difference. First operand 1502 states and 1885 transitions. Second operand 4 states. [2020-12-22 13:49:50,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:50,897 INFO L93 Difference]: Finished difference Result 5402 states and 6946 transitions. [2020-12-22 13:49:50,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:49:50,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2020-12-22 13:49:50,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:50,909 INFO L225 Difference]: With dead ends: 5402 [2020-12-22 13:49:50,909 INFO L226 Difference]: Without dead ends: 3945 [2020-12-22 13:49:50,917 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 13:49:50,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3945 states. [2020-12-22 13:49:51,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3945 to 1508. [2020-12-22 13:49:51,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1508 states. [2020-12-22 13:49:51,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 1891 transitions. [2020-12-22 13:49:51,097 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 1891 transitions. Word has length 155 [2020-12-22 13:49:51,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:51,098 INFO L481 AbstractCegarLoop]: Abstraction has 1508 states and 1891 transitions. [2020-12-22 13:49:51,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:49:51,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 1891 transitions. [2020-12-22 13:49:51,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 13:49:51,101 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:51,101 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:51,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 13:49:51,101 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:51,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:51,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1476952148, now seen corresponding path program 1 times [2020-12-22 13:49:51,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:51,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379392814] [2020-12-22 13:49:51,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:51,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:49:51,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379392814] [2020-12-22 13:49:51,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:51,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 13:49:51,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856490122] [2020-12-22 13:49:51,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:49:51,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:51,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:49:51,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:49:51,464 INFO L87 Difference]: Start difference. First operand 1508 states and 1891 transitions. Second operand 5 states. [2020-12-22 13:49:52,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:52,146 INFO L93 Difference]: Finished difference Result 6302 states and 8017 transitions. [2020-12-22 13:49:52,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 13:49:52,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-12-22 13:49:52,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:52,160 INFO L225 Difference]: With dead ends: 6302 [2020-12-22 13:49:52,160 INFO L226 Difference]: Without dead ends: 4839 [2020-12-22 13:49:52,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:49:52,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4839 states. [2020-12-22 13:49:52,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4839 to 1517. [2020-12-22 13:49:52,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1517 states. [2020-12-22 13:49:52,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 1900 transitions. [2020-12-22 13:49:52,374 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 1900 transitions. Word has length 155 [2020-12-22 13:49:52,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:52,375 INFO L481 AbstractCegarLoop]: Abstraction has 1517 states and 1900 transitions. [2020-12-22 13:49:52,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:49:52,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 1900 transitions. [2020-12-22 13:49:52,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 13:49:52,378 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:52,378 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:52,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 13:49:52,379 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:52,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:52,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1506060004, now seen corresponding path program 1 times [2020-12-22 13:49:52,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:52,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194048630] [2020-12-22 13:49:52,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:54,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 13:49:54,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194048630] [2020-12-22 13:49:54,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:49:54,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:49:54,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262661127] [2020-12-22 13:49:54,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:49:54,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:54,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:49:54,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:49:54,282 INFO L87 Difference]: Start difference. First operand 1517 states and 1900 transitions. Second operand 3 states. [2020-12-22 13:49:54,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:54,447 INFO L93 Difference]: Finished difference Result 2996 states and 3763 transitions. [2020-12-22 13:49:54,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:49:54,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-12-22 13:49:54,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:54,452 INFO L225 Difference]: With dead ends: 2996 [2020-12-22 13:49:54,452 INFO L226 Difference]: Without dead ends: 1519 [2020-12-22 13:49:54,455 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 13:49:54,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2020-12-22 13:49:54,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1519. [2020-12-22 13:49:54,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1519 states. [2020-12-22 13:49:54,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 1902 transitions. [2020-12-22 13:49:54,621 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 1902 transitions. Word has length 161 [2020-12-22 13:49:54,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:54,622 INFO L481 AbstractCegarLoop]: Abstraction has 1519 states and 1902 transitions. [2020-12-22 13:49:54,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:49:54,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 1902 transitions. [2020-12-22 13:49:54,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-22 13:49:54,625 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:54,625 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:54,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 13:49:54,626 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:54,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:54,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1141394366, now seen corresponding path program 1 times [2020-12-22 13:49:54,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:54,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477434726] [2020-12-22 13:49:54,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:49:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:56,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 13:49:56,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477434726] [2020-12-22 13:49:56,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921922547] [2020-12-22 13:49:56,249 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 13:49:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:49:57,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 2688 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 13:49:57,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:49:57,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 13:49:57,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:49:57,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2020-12-22 13:49:57,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138890386] [2020-12-22 13:49:57,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:49:57,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:49:57,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:49:57,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:49:57,369 INFO L87 Difference]: Start difference. First operand 1519 states and 1902 transitions. Second operand 4 states. [2020-12-22 13:49:58,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:49:58,893 INFO L93 Difference]: Finished difference Result 3012 states and 3782 transitions. [2020-12-22 13:49:58,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:49:58,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-12-22 13:49:58,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:49:58,898 INFO L225 Difference]: With dead ends: 3012 [2020-12-22 13:49:58,898 INFO L226 Difference]: Without dead ends: 1516 [2020-12-22 13:49:58,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 13:49:58,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2020-12-22 13:49:59,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1492. [2020-12-22 13:49:59,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1492 states. [2020-12-22 13:49:59,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 1860 transitions. [2020-12-22 13:49:59,075 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 1860 transitions. Word has length 163 [2020-12-22 13:49:59,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:49:59,075 INFO L481 AbstractCegarLoop]: Abstraction has 1492 states and 1860 transitions. [2020-12-22 13:49:59,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:49:59,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 1860 transitions. [2020-12-22 13:49:59,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-22 13:49:59,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:49:59,079 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:49:59,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:49:59,294 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:49:59,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:49:59,294 INFO L82 PathProgramCache]: Analyzing trace with hash 607182715, now seen corresponding path program 1 times [2020-12-22 13:49:59,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:49:59,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092749251] [2020-12-22 13:49:59,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 13:50:01,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092749251] [2020-12-22 13:50:01,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559311974] [2020-12-22 13:50:01,128 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 13:50:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:02,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 13:50:02,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:50:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 13:50:02,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:50:02,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2020-12-22 13:50:02,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366810973] [2020-12-22 13:50:02,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:50:02,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:02,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:50:02,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 13:50:02,276 INFO L87 Difference]: Start difference. First operand 1492 states and 1860 transitions. Second operand 6 states. [2020-12-22 13:50:03,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:03,472 INFO L93 Difference]: Finished difference Result 7523 states and 9638 transitions. [2020-12-22 13:50:03,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 13:50:03,473 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-12-22 13:50:03,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:03,491 INFO L225 Difference]: With dead ends: 7523 [2020-12-22 13:50:03,492 INFO L226 Difference]: Without dead ends: 6078 [2020-12-22 13:50:03,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-12-22 13:50:03,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6078 states. [2020-12-22 13:50:03,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6078 to 1492. [2020-12-22 13:50:03,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1492 states. [2020-12-22 13:50:03,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 1860 transitions. [2020-12-22 13:50:03,813 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 1860 transitions. Word has length 165 [2020-12-22 13:50:03,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:03,813 INFO L481 AbstractCegarLoop]: Abstraction has 1492 states and 1860 transitions. [2020-12-22 13:50:03,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:50:03,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 1860 transitions. [2020-12-22 13:50:03,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-12-22 13:50:03,817 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:03,817 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:50:04,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 13:50:04,031 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:04,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:04,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1051083389, now seen corresponding path program 1 times [2020-12-22 13:50:04,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:04,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530233870] [2020-12-22 13:50:04,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:05,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 13:50:05,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530233870] [2020-12-22 13:50:05,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752795271] [2020-12-22 13:50:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:13,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 2709 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 13:50:13,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:50:13,905 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 13:50:13,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:50:13,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-22 13:50:13,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177528419] [2020-12-22 13:50:13,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:50:13,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:50:13,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:50:13,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:50:13,908 INFO L87 Difference]: Start difference. First operand 1492 states and 1860 transitions. Second operand 6 states. [2020-12-22 13:50:14,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:50:14,167 INFO L93 Difference]: Finished difference Result 2945 states and 3682 transitions. [2020-12-22 13:50:14,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:50:14,168 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-12-22 13:50:14,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:50:14,172 INFO L225 Difference]: With dead ends: 2945 [2020-12-22 13:50:14,173 INFO L226 Difference]: Without dead ends: 1494 [2020-12-22 13:50:14,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:50:14,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2020-12-22 13:50:14,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1494. [2020-12-22 13:50:14,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-12-22 13:50:14,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1862 transitions. [2020-12-22 13:50:14,475 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1862 transitions. Word has length 165 [2020-12-22 13:50:14,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:50:14,475 INFO L481 AbstractCegarLoop]: Abstraction has 1494 states and 1862 transitions. [2020-12-22 13:50:14,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:50:14,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1862 transitions. [2020-12-22 13:50:14,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-22 13:50:14,479 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:50:14,479 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:50:14,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:50:14,693 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:50:14,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:50:14,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1407706271, now seen corresponding path program 2 times [2020-12-22 13:50:14,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:50:14,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880320849] [2020-12-22 13:50:14,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:50:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:50:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 13:50:16,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880320849] [2020-12-22 13:50:16,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637599295] [2020-12-22 13:50:16,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true