/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/product-lines/elevator_spec3_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:12:21,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:12:21,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:12:22,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:12:22,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:12:22,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:12:22,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:12:22,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:12:22,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:12:22,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:12:22,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:12:22,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:12:22,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:12:22,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:12:22,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:12:22,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:12:22,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:12:22,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:12:22,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:12:22,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:12:22,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:12:22,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:12:22,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:12:22,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:12:22,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 06:12:22,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 06:12:22,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 06:12:22,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 06:12:22,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 06:12:22,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 06:12:22,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:12:22,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:12:22,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:12:22,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:12:22,125 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:12:22,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:12:22,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:12:22,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:12:22,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:12:22,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:12:22,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:12:22,130 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:12:22,157 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:12:22,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:12:22,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:12:22,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:12:22,159 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:12:22,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:12:22,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:12:22,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:12:22,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:12:22,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:12:22,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:12:22,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:12:22,162 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:12:22,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:12:22,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:12:22,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:12:22,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:12:22,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:12:22,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:12:22,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:12:22,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:12:22,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:12:22,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:12:22,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:12:22,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:12:22,165 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:12:22,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:12:22,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:12:22,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:12:22,589 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:12:22,590 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:12:22,591 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c [2020-12-22 06:12:22,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63da13656/c71bc8e666e24bd6879c775bf074389d/FLAGd3068ecb9 [2020-12-22 06:12:23,547 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:12:23,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product32.cil.c [2020-12-22 06:12:23,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63da13656/c71bc8e666e24bd6879c775bf074389d/FLAGd3068ecb9 [2020-12-22 06:12:24,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63da13656/c71bc8e666e24bd6879c775bf074389d [2020-12-22 06:12:24,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:12:24,111 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:12:24,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:12:24,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:12:24,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:12:24,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:12:24" (1/1) ... [2020-12-22 06:12:24,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@260677f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:24, skipping insertion in model container [2020-12-22 06:12:24,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:12:24" (1/1) ... [2020-12-22 06:12:24,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:12:24,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:12:24,593 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/product-lines/elevator_spec3_product32.cil.c[2909,2922] [2020-12-22 06:12:25,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:12:25,106 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:12:25,177 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/product-lines/elevator_spec3_product32.cil.c[2909,2922] [2020-12-22 06:12:25,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:12:25,378 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:12:25,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:25 WrapperNode [2020-12-22 06:12:25,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:12:25,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:12:25,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:12:25,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:12:25,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:25" (1/1) ... [2020-12-22 06:12:25,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:25" (1/1) ... [2020-12-22 06:12:26,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:12:26,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:12:26,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:12:26,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:12:26,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:25" (1/1) ... [2020-12-22 06:12:26,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:25" (1/1) ... [2020-12-22 06:12:26,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:25" (1/1) ... [2020-12-22 06:12:26,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:25" (1/1) ... [2020-12-22 06:12:27,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:25" (1/1) ... [2020-12-22 06:12:28,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:25" (1/1) ... [2020-12-22 06:12:28,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:25" (1/1) ... [2020-12-22 06:12:28,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:12:28,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:12:28,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:12:28,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:12:28,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:25" (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 06:12:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:12:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:12:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:12:28,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:13:03,593 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:13:03,594 INFO L299 CfgBuilder]: Removed 4177 assume(true) statements. [2020-12-22 06:13:03,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:13:03 BoogieIcfgContainer [2020-12-22 06:13:03,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:13:03,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:13:03,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:13:03,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:13:03,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:12:24" (1/3) ... [2020-12-22 06:13:03,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4e5f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:13:03, skipping insertion in model container [2020-12-22 06:13:03,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:12:25" (2/3) ... [2020-12-22 06:13:03,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4e5f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:13:03, skipping insertion in model container [2020-12-22 06:13:03,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:13:03" (3/3) ... [2020-12-22 06:13:03,626 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product32.cil.c [2020-12-22 06:13:03,633 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:13:03,644 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-22 06:13:03,665 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-22 06:13:03,747 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:13:03,748 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:13:03,748 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:13:03,748 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:13:03,748 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:13:03,748 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:13:03,748 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:13:03,748 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:13:04,188 INFO L276 IsEmpty]: Start isEmpty. Operand 17883 states. [2020-12-22 06:13:04,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 06:13:04,200 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:04,201 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] [2020-12-22 06:13:04,202 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:04,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:04,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1797476216, now seen corresponding path program 1 times [2020-12-22 06:13:04,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:04,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848473728] [2020-12-22 06:13:04,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:04,743 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 06:13:04,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848473728] [2020-12-22 06:13:04,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:04,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:13:04,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740035962] [2020-12-22 06:13:04,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:13:04,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:04,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:13:04,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:13:04,771 INFO L87 Difference]: Start difference. First operand 17883 states. Second operand 4 states. [2020-12-22 06:13:07,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:07,177 INFO L93 Difference]: Finished difference Result 71357 states and 134509 transitions. [2020-12-22 06:13:07,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:13:07,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-12-22 06:13:07,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:07,494 INFO L225 Difference]: With dead ends: 71357 [2020-12-22 06:13:07,495 INFO L226 Difference]: Without dead ends: 53487 [2020-12-22 06:13:07,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 06:13:07,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53487 states. [2020-12-22 06:13:09,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53487 to 17891. [2020-12-22 06:13:09,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17891 states. [2020-12-22 06:13:09,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17891 states to 17891 states and 33703 transitions. [2020-12-22 06:13:09,423 INFO L78 Accepts]: Start accepts. Automaton has 17891 states and 33703 transitions. Word has length 30 [2020-12-22 06:13:09,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:09,424 INFO L481 AbstractCegarLoop]: Abstraction has 17891 states and 33703 transitions. [2020-12-22 06:13:09,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:13:09,424 INFO L276 IsEmpty]: Start isEmpty. Operand 17891 states and 33703 transitions. [2020-12-22 06:13:09,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:13:09,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:09,436 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] [2020-12-22 06:13:09,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:13:09,437 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:09,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:09,439 INFO L82 PathProgramCache]: Analyzing trace with hash 38126537, now seen corresponding path program 1 times [2020-12-22 06:13:09,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:09,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116559934] [2020-12-22 06:13:09,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:09,628 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 06:13:09,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116559934] [2020-12-22 06:13:09,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:09,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:13:09,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676237658] [2020-12-22 06:13:09,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:13:09,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:09,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:13:09,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:13:09,632 INFO L87 Difference]: Start difference. First operand 17891 states and 33703 transitions. Second operand 3 states. [2020-12-22 06:13:10,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:10,405 INFO L93 Difference]: Finished difference Result 35698 states and 67253 transitions. [2020-12-22 06:13:10,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:13:10,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-12-22 06:13:10,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:10,458 INFO L225 Difference]: With dead ends: 35698 [2020-12-22 06:13:10,458 INFO L226 Difference]: Without dead ends: 17821 [2020-12-22 06:13:10,487 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 06:13:10,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17821 states. [2020-12-22 06:13:11,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17821 to 17821. [2020-12-22 06:13:11,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17821 states. [2020-12-22 06:13:11,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17821 states to 17821 states and 33563 transitions. [2020-12-22 06:13:11,193 INFO L78 Accepts]: Start accepts. Automaton has 17821 states and 33563 transitions. Word has length 31 [2020-12-22 06:13:11,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:11,193 INFO L481 AbstractCegarLoop]: Abstraction has 17821 states and 33563 transitions. [2020-12-22 06:13:11,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:13:11,194 INFO L276 IsEmpty]: Start isEmpty. Operand 17821 states and 33563 transitions. [2020-12-22 06:13:11,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 06:13:11,196 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:11,196 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] [2020-12-22 06:13:11,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:13:11,197 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:11,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:11,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1349152512, now seen corresponding path program 1 times [2020-12-22 06:13:11,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:11,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635701066] [2020-12-22 06:13:11,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:11,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:13:11,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635701066] [2020-12-22 06:13:11,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:11,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:13:11,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165897014] [2020-12-22 06:13:11,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:13:11,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:11,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:13:11,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:13:11,340 INFO L87 Difference]: Start difference. First operand 17821 states and 33563 transitions. Second operand 4 states. [2020-12-22 06:13:12,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:12,206 INFO L93 Difference]: Finished difference Result 35616 states and 67089 transitions. [2020-12-22 06:13:12,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:13:12,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-12-22 06:13:12,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:12,266 INFO L225 Difference]: With dead ends: 35616 [2020-12-22 06:13:12,266 INFO L226 Difference]: Without dead ends: 17821 [2020-12-22 06:13:12,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 06:13:12,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17821 states. [2020-12-22 06:13:12,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17821 to 17821. [2020-12-22 06:13:12,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17821 states. [2020-12-22 06:13:13,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17821 states to 17821 states and 33561 transitions. [2020-12-22 06:13:13,107 INFO L78 Accepts]: Start accepts. Automaton has 17821 states and 33561 transitions. Word has length 34 [2020-12-22 06:13:13,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:13,114 INFO L481 AbstractCegarLoop]: Abstraction has 17821 states and 33561 transitions. [2020-12-22 06:13:13,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:13:13,115 INFO L276 IsEmpty]: Start isEmpty. Operand 17821 states and 33561 transitions. [2020-12-22 06:13:13,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 06:13:13,119 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:13,120 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] [2020-12-22 06:13:13,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:13:13,123 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:13,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:13,124 INFO L82 PathProgramCache]: Analyzing trace with hash 253294523, now seen corresponding path program 1 times [2020-12-22 06:13:13,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:13,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188240298] [2020-12-22 06:13:13,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:13,257 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 06:13:13,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188240298] [2020-12-22 06:13:13,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:13,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:13:13,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607364120] [2020-12-22 06:13:13,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:13:13,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:13,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:13:13,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:13:13,262 INFO L87 Difference]: Start difference. First operand 17821 states and 33561 transitions. Second operand 4 states. [2020-12-22 06:13:14,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:14,259 INFO L93 Difference]: Finished difference Result 35616 states and 67086 transitions. [2020-12-22 06:13:14,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:13:14,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-22 06:13:14,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:14,325 INFO L225 Difference]: With dead ends: 35616 [2020-12-22 06:13:14,325 INFO L226 Difference]: Without dead ends: 17821 [2020-12-22 06:13:14,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 06:13:14,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17821 states. [2020-12-22 06:13:15,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17821 to 17821. [2020-12-22 06:13:15,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17821 states. [2020-12-22 06:13:15,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17821 states to 17821 states and 33559 transitions. [2020-12-22 06:13:15,114 INFO L78 Accepts]: Start accepts. Automaton has 17821 states and 33559 transitions. Word has length 35 [2020-12-22 06:13:15,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:15,115 INFO L481 AbstractCegarLoop]: Abstraction has 17821 states and 33559 transitions. [2020-12-22 06:13:15,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:13:15,115 INFO L276 IsEmpty]: Start isEmpty. Operand 17821 states and 33559 transitions. [2020-12-22 06:13:15,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 06:13:15,116 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:15,117 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] [2020-12-22 06:13:15,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:13:15,117 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:15,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:15,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1994117883, now seen corresponding path program 1 times [2020-12-22 06:13:15,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:15,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280761448] [2020-12-22 06:13:15,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:15,189 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 06:13:15,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280761448] [2020-12-22 06:13:15,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:15,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:13:15,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818214811] [2020-12-22 06:13:15,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:13:15,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:15,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:13:15,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:13:15,192 INFO L87 Difference]: Start difference. First operand 17821 states and 33559 transitions. Second operand 4 states. [2020-12-22 06:13:16,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:16,185 INFO L93 Difference]: Finished difference Result 35616 states and 67083 transitions. [2020-12-22 06:13:16,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:13:16,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-12-22 06:13:16,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:16,238 INFO L225 Difference]: With dead ends: 35616 [2020-12-22 06:13:16,239 INFO L226 Difference]: Without dead ends: 17821 [2020-12-22 06:13:16,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 06:13:16,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17821 states. [2020-12-22 06:13:16,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17821 to 17821. [2020-12-22 06:13:16,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17821 states. [2020-12-22 06:13:16,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17821 states to 17821 states and 33557 transitions. [2020-12-22 06:13:16,988 INFO L78 Accepts]: Start accepts. Automaton has 17821 states and 33557 transitions. Word has length 36 [2020-12-22 06:13:16,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:16,989 INFO L481 AbstractCegarLoop]: Abstraction has 17821 states and 33557 transitions. [2020-12-22 06:13:16,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:13:16,989 INFO L276 IsEmpty]: Start isEmpty. Operand 17821 states and 33557 transitions. [2020-12-22 06:13:16,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 06:13:16,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:16,990 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] [2020-12-22 06:13:16,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:13:16,991 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:16,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:16,991 INFO L82 PathProgramCache]: Analyzing trace with hash -565327274, now seen corresponding path program 1 times [2020-12-22 06:13:16,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:16,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775314168] [2020-12-22 06:13:16,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:17,062 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 06:13:17,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775314168] [2020-12-22 06:13:17,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:17,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:13:17,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251194941] [2020-12-22 06:13:17,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:13:17,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:17,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:13:17,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:13:17,065 INFO L87 Difference]: Start difference. First operand 17821 states and 33557 transitions. Second operand 4 states. [2020-12-22 06:13:18,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:18,291 INFO L93 Difference]: Finished difference Result 35616 states and 67080 transitions. [2020-12-22 06:13:18,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:13:18,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-12-22 06:13:18,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:18,339 INFO L225 Difference]: With dead ends: 35616 [2020-12-22 06:13:18,340 INFO L226 Difference]: Without dead ends: 17821 [2020-12-22 06:13:18,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 06:13:18,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17821 states. [2020-12-22 06:13:18,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17821 to 17821. [2020-12-22 06:13:18,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17821 states. [2020-12-22 06:13:19,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17821 states to 17821 states and 33555 transitions. [2020-12-22 06:13:19,034 INFO L78 Accepts]: Start accepts. Automaton has 17821 states and 33555 transitions. Word has length 37 [2020-12-22 06:13:19,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:19,034 INFO L481 AbstractCegarLoop]: Abstraction has 17821 states and 33555 transitions. [2020-12-22 06:13:19,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:13:19,035 INFO L276 IsEmpty]: Start isEmpty. Operand 17821 states and 33555 transitions. [2020-12-22 06:13:19,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 06:13:19,035 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:19,036 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] [2020-12-22 06:13:19,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:13:19,036 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:19,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:19,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1005857014, now seen corresponding path program 1 times [2020-12-22 06:13:19,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:19,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882713431] [2020-12-22 06:13:19,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:19,117 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 06:13:19,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882713431] [2020-12-22 06:13:19,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:19,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:13:19,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728775299] [2020-12-22 06:13:19,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:13:19,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:19,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:13:19,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:13:19,120 INFO L87 Difference]: Start difference. First operand 17821 states and 33555 transitions. Second operand 5 states. [2020-12-22 06:13:22,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:22,028 INFO L93 Difference]: Finished difference Result 50044 states and 94113 transitions. [2020-12-22 06:13:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:13:22,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-22 06:13:22,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:22,092 INFO L225 Difference]: With dead ends: 50044 [2020-12-22 06:13:22,092 INFO L226 Difference]: Without dead ends: 32293 [2020-12-22 06:13:22,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:13:22,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32293 states. [2020-12-22 06:13:23,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32293 to 31780. [2020-12-22 06:13:23,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31780 states. [2020-12-22 06:13:23,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31780 states to 31780 states and 59840 transitions. [2020-12-22 06:13:23,610 INFO L78 Accepts]: Start accepts. Automaton has 31780 states and 59840 transitions. Word has length 38 [2020-12-22 06:13:23,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:23,610 INFO L481 AbstractCegarLoop]: Abstraction has 31780 states and 59840 transitions. [2020-12-22 06:13:23,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:13:23,611 INFO L276 IsEmpty]: Start isEmpty. Operand 31780 states and 59840 transitions. [2020-12-22 06:13:23,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 06:13:23,611 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:23,612 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] [2020-12-22 06:13:23,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:13:23,612 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:23,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:23,613 INFO L82 PathProgramCache]: Analyzing trace with hash 313143057, now seen corresponding path program 1 times [2020-12-22 06:13:23,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:23,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466934734] [2020-12-22 06:13:23,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:23,690 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 06:13:23,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466934734] [2020-12-22 06:13:23,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:23,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:13:23,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844345961] [2020-12-22 06:13:23,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:13:23,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:23,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:13:23,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:13:23,693 INFO L87 Difference]: Start difference. First operand 31780 states and 59840 transitions. Second operand 5 states. [2020-12-22 06:13:36,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:36,682 INFO L93 Difference]: Finished difference Result 262981 states and 495261 transitions. [2020-12-22 06:13:36,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:13:36,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-22 06:13:36,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:37,485 INFO L225 Difference]: With dead ends: 262981 [2020-12-22 06:13:37,485 INFO L226 Difference]: Without dead ends: 231271 [2020-12-22 06:13:37,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:13:37,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231271 states. [2020-12-22 06:13:41,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231271 to 58623. [2020-12-22 06:13:41,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58623 states. [2020-12-22 06:13:41,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58623 states to 58623 states and 110176 transitions. [2020-12-22 06:13:41,700 INFO L78 Accepts]: Start accepts. Automaton has 58623 states and 110176 transitions. Word has length 38 [2020-12-22 06:13:41,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:41,701 INFO L481 AbstractCegarLoop]: Abstraction has 58623 states and 110176 transitions. [2020-12-22 06:13:41,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:13:41,701 INFO L276 IsEmpty]: Start isEmpty. Operand 58623 states and 110176 transitions. [2020-12-22 06:13:41,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 06:13:41,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:41,702 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] [2020-12-22 06:13:41,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:13:41,703 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:41,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:41,703 INFO L82 PathProgramCache]: Analyzing trace with hash 989545101, now seen corresponding path program 1 times [2020-12-22 06:13:41,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:41,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227707165] [2020-12-22 06:13:41,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:41,812 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 06:13:41,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227707165] [2020-12-22 06:13:41,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:41,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:13:41,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828123233] [2020-12-22 06:13:41,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:13:41,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:41,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:13:41,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:13:41,820 INFO L87 Difference]: Start difference. First operand 58623 states and 110176 transitions. Second operand 3 states. [2020-12-22 06:13:46,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:46,482 INFO L93 Difference]: Finished difference Result 174389 states and 327692 transitions. [2020-12-22 06:13:46,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:13:46,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-22 06:13:46,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:46,725 INFO L225 Difference]: With dead ends: 174389 [2020-12-22 06:13:46,725 INFO L226 Difference]: Without dead ends: 115798 [2020-12-22 06:13:46,806 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 06:13:46,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115798 states. [2020-12-22 06:13:49,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115798 to 58499. [2020-12-22 06:13:49,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58499 states. [2020-12-22 06:13:49,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58499 states to 58499 states and 109928 transitions. [2020-12-22 06:13:49,419 INFO L78 Accepts]: Start accepts. Automaton has 58499 states and 109928 transitions. Word has length 39 [2020-12-22 06:13:49,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:49,420 INFO L481 AbstractCegarLoop]: Abstraction has 58499 states and 109928 transitions. [2020-12-22 06:13:49,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:13:49,420 INFO L276 IsEmpty]: Start isEmpty. Operand 58499 states and 109928 transitions. [2020-12-22 06:13:49,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 06:13:49,421 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:49,421 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] [2020-12-22 06:13:49,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:13:49,421 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:49,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:49,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1252778454, now seen corresponding path program 1 times [2020-12-22 06:13:49,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:49,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153272119] [2020-12-22 06:13:49,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:49,511 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 06:13:49,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153272119] [2020-12-22 06:13:49,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:49,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:13:49,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018213908] [2020-12-22 06:13:49,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:13:49,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:49,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:13:49,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:13:49,514 INFO L87 Difference]: Start difference. First operand 58499 states and 109928 transitions. Second operand 5 states. [2020-12-22 06:14:01,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:01,153 INFO L93 Difference]: Finished difference Result 136434 states and 256141 transitions. [2020-12-22 06:14:01,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:14:01,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-12-22 06:14:01,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:01,455 INFO L225 Difference]: With dead ends: 136434 [2020-12-22 06:14:01,455 INFO L226 Difference]: Without dead ends: 77969 [2020-12-22 06:14:01,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:14:01,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77969 states. [2020-12-22 06:14:04,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77969 to 77509. [2020-12-22 06:14:04,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77509 states. [2020-12-22 06:14:04,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77509 states to 77509 states and 143244 transitions. [2020-12-22 06:14:04,316 INFO L78 Accepts]: Start accepts. Automaton has 77509 states and 143244 transitions. Word has length 39 [2020-12-22 06:14:04,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:04,316 INFO L481 AbstractCegarLoop]: Abstraction has 77509 states and 143244 transitions. [2020-12-22 06:14:04,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:14:04,316 INFO L276 IsEmpty]: Start isEmpty. Operand 77509 states and 143244 transitions. [2020-12-22 06:14:04,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 06:14:04,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:04,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:04,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:14:04,318 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:04,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:04,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1241121111, now seen corresponding path program 1 times [2020-12-22 06:14:04,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:04,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893579761] [2020-12-22 06:14:04,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:04,420 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 06:14:04,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893579761] [2020-12-22 06:14:04,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:04,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:14:04,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714607376] [2020-12-22 06:14:04,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:14:04,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:04,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:14:04,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:14:04,423 INFO L87 Difference]: Start difference. First operand 77509 states and 143244 transitions. Second operand 5 states. [2020-12-22 06:14:11,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:11,491 INFO L93 Difference]: Finished difference Result 230333 states and 425696 transitions. [2020-12-22 06:14:11,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:14:11,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-12-22 06:14:11,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:11,817 INFO L225 Difference]: With dead ends: 230333 [2020-12-22 06:14:11,818 INFO L226 Difference]: Without dead ends: 152864 [2020-12-22 06:14:11,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 06:14:12,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152864 states. [2020-12-22 06:14:15,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152864 to 77509. [2020-12-22 06:14:15,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77509 states. [2020-12-22 06:14:15,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77509 states to 77509 states and 143133 transitions. [2020-12-22 06:14:15,664 INFO L78 Accepts]: Start accepts. Automaton has 77509 states and 143133 transitions. Word has length 42 [2020-12-22 06:14:15,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:15,664 INFO L481 AbstractCegarLoop]: Abstraction has 77509 states and 143133 transitions. [2020-12-22 06:14:15,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:14:15,664 INFO L276 IsEmpty]: Start isEmpty. Operand 77509 states and 143133 transitions. [2020-12-22 06:14:15,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 06:14:15,665 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:15,665 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] [2020-12-22 06:14:15,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:14:15,666 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:15,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:15,666 INFO L82 PathProgramCache]: Analyzing trace with hash 977904046, now seen corresponding path program 1 times [2020-12-22 06:14:15,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:15,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153309230] [2020-12-22 06:14:15,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:15,738 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 06:14:15,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153309230] [2020-12-22 06:14:15,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:15,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:14:15,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016900264] [2020-12-22 06:14:15,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:14:15,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:15,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:14:15,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:14:15,741 INFO L87 Difference]: Start difference. First operand 77509 states and 143133 transitions. Second operand 5 states. [2020-12-22 06:14:39,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:39,540 INFO L93 Difference]: Finished difference Result 659687 states and 1219451 transitions. [2020-12-22 06:14:39,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:14:39,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-12-22 06:14:39,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:41,281 INFO L225 Difference]: With dead ends: 659687 [2020-12-22 06:14:41,281 INFO L226 Difference]: Without dead ends: 582237 [2020-12-22 06:14:41,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:14:42,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582237 states. [2020-12-22 06:14:54,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582237 to 147865. [2020-12-22 06:14:54,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147865 states. [2020-12-22 06:14:55,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147865 states to 147865 states and 272666 transitions. [2020-12-22 06:14:55,110 INFO L78 Accepts]: Start accepts. Automaton has 147865 states and 272666 transitions. Word has length 43 [2020-12-22 06:14:55,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:55,110 INFO L481 AbstractCegarLoop]: Abstraction has 147865 states and 272666 transitions. [2020-12-22 06:14:55,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:14:55,112 INFO L276 IsEmpty]: Start isEmpty. Operand 147865 states and 272666 transitions. [2020-12-22 06:14:55,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 06:14:55,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:55,113 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] [2020-12-22 06:14:55,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:14:55,113 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:55,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:55,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1693620772, now seen corresponding path program 1 times [2020-12-22 06:14:55,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:55,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521836166] [2020-12-22 06:14:55,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:55,172 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 06:14:55,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521836166] [2020-12-22 06:14:55,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:55,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:14:55,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179638203] [2020-12-22 06:14:55,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:14:55,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:55,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:14:55,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:55,175 INFO L87 Difference]: Start difference. First operand 147865 states and 272666 transitions. Second operand 3 states. [2020-12-22 06:15:06,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:15:06,834 INFO L93 Difference]: Finished difference Result 440118 states and 811678 transitions. [2020-12-22 06:15:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:15:06,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 06:15:06,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:15:07,454 INFO L225 Difference]: With dead ends: 440118 [2020-12-22 06:15:07,454 INFO L226 Difference]: Without dead ends: 292290 [2020-12-22 06:15:07,647 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 06:15:07,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292290 states. [2020-12-22 06:15:14,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292290 to 147611. [2020-12-22 06:15:14,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147611 states. [2020-12-22 06:15:15,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147611 states to 147611 states and 272165 transitions. [2020-12-22 06:15:15,033 INFO L78 Accepts]: Start accepts. Automaton has 147611 states and 272165 transitions. Word has length 44 [2020-12-22 06:15:15,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:15:15,034 INFO L481 AbstractCegarLoop]: Abstraction has 147611 states and 272165 transitions. [2020-12-22 06:15:15,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:15:15,034 INFO L276 IsEmpty]: Start isEmpty. Operand 147611 states and 272165 transitions. [2020-12-22 06:15:15,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 06:15:15,035 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:15:15,035 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] [2020-12-22 06:15:15,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:15:15,035 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:15:15,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:15:15,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1665246890, now seen corresponding path program 1 times [2020-12-22 06:15:15,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:15:15,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326080692] [2020-12-22 06:15:15,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:15:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:15:15,090 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 06:15:15,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326080692] [2020-12-22 06:15:15,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:15:15,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:15:15,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603272766] [2020-12-22 06:15:15,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:15:15,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:15:15,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:15:15,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:15:15,093 INFO L87 Difference]: Start difference. First operand 147611 states and 272165 transitions. Second operand 3 states. [2020-12-22 06:15:27,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:15:27,018 INFO L93 Difference]: Finished difference Result 439617 states and 810705 transitions. [2020-12-22 06:15:27,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:15:27,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-12-22 06:15:27,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:15:27,624 INFO L225 Difference]: With dead ends: 439617 [2020-12-22 06:15:27,624 INFO L226 Difference]: Without dead ends: 292049 [2020-12-22 06:15:27,810 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 06:15:28,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292049 states. [2020-12-22 06:15:35,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292049 to 147499. [2020-12-22 06:15:35,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147499 states. [2020-12-22 06:15:35,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147499 states to 147499 states and 271829 transitions. [2020-12-22 06:15:35,660 INFO L78 Accepts]: Start accepts. Automaton has 147499 states and 271829 transitions. Word has length 48 [2020-12-22 06:15:35,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:15:35,660 INFO L481 AbstractCegarLoop]: Abstraction has 147499 states and 271829 transitions. [2020-12-22 06:15:35,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:15:35,660 INFO L276 IsEmpty]: Start isEmpty. Operand 147499 states and 271829 transitions. [2020-12-22 06:15:35,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:15:35,661 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:15:35,661 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] [2020-12-22 06:15:35,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:15:35,661 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:15:35,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:15:35,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1842646943, now seen corresponding path program 1 times [2020-12-22 06:15:35,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:15:35,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715875838] [2020-12-22 06:15:35,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:15:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:15:35,730 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 06:15:35,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715875838] [2020-12-22 06:15:35,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:15:35,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:15:35,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751482664] [2020-12-22 06:15:35,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:15:35,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:15:35,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:15:35,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:15:35,733 INFO L87 Difference]: Start difference. First operand 147499 states and 271829 transitions. Second operand 5 states.