/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_spec1_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:58:35,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:58:35,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:58:35,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:58:35,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:58:35,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:58:35,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:58:35,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:58:35,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:58:35,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:58:35,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:58:35,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:58:35,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:58:35,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:58:35,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:58:35,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:58:35,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:58:35,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:58:35,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:58:35,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:58:35,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:58:35,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:58:36,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:58:36,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:58:36,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:58:36,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:58:36,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:58:36,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:58:36,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:58:36,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:58:36,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:58:36,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:58:36,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:58:36,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:58:36,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:58:36,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:58:36,031 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:58:36,085 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:58:36,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:58:36,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:58:36,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:58:36,090 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:58:36,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:58:36,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:58:36,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:58:36,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:58:36,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:58:36,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:58:36,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:58:36,094 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:58:36,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:58:36,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:58:36,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:58:36,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:58:36,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:58:36,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:58:36,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:58:36,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:58:36,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:58:36,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:58:36,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:58:36,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:58:36,097 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:58:36,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:58:36,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:58:36,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:58:36,535 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:58:36,536 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:58:36,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c [2020-12-22 05:58:36,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42f177e8e/7a5be66bfcb242209f76e2fc2c3d6008/FLAG01fe85bca [2020-12-22 05:58:37,429 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:58:37,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c [2020-12-22 05:58:37,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42f177e8e/7a5be66bfcb242209f76e2fc2c3d6008/FLAG01fe85bca [2020-12-22 05:58:37,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42f177e8e/7a5be66bfcb242209f76e2fc2c3d6008 [2020-12-22 05:58:37,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:58:37,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:58:37,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:58:37,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:58:37,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:58:37,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:58:37" (1/1) ... [2020-12-22 05:58:37,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67d517ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:37, skipping insertion in model container [2020-12-22 05:58:37,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:58:37" (1/1) ... [2020-12-22 05:58:37,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:58:37,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:58:38,019 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_spec1_product09.cil.c[1221,1234] [2020-12-22 05:58:38,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:58:38,488 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:58:38,505 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_spec1_product09.cil.c[1221,1234] [2020-12-22 05:58:38,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:58:38,707 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:58:38,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:38 WrapperNode [2020-12-22 05:58:38,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:58:38,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:58:38,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:58:38,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:58:38,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:38" (1/1) ... [2020-12-22 05:58:38,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:38" (1/1) ... [2020-12-22 05:58:39,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:58:39,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:58:39,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:58:39,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:58:39,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:38" (1/1) ... [2020-12-22 05:58:39,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:38" (1/1) ... [2020-12-22 05:58:39,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:38" (1/1) ... [2020-12-22 05:58:39,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:38" (1/1) ... [2020-12-22 05:58:39,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:38" (1/1) ... [2020-12-22 05:58:39,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:38" (1/1) ... [2020-12-22 05:58:39,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:38" (1/1) ... [2020-12-22 05:58:39,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:58:39,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:58:39,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:58:39,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:58:39,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:38" (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 05:58:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:58:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:58:39,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:58:39,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:58:44,705 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:58:44,705 INFO L299 CfgBuilder]: Removed 493 assume(true) statements. [2020-12-22 05:58:44,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:58:44 BoogieIcfgContainer [2020-12-22 05:58:44,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:58:44,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:58:44,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:58:44,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:58:44,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:58:37" (1/3) ... [2020-12-22 05:58:44,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac53949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:58:44, skipping insertion in model container [2020-12-22 05:58:44,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:58:38" (2/3) ... [2020-12-22 05:58:44,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac53949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:58:44, skipping insertion in model container [2020-12-22 05:58:44,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:58:44" (3/3) ... [2020-12-22 05:58:44,720 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product09.cil.c [2020-12-22 05:58:44,727 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:58:44,733 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 05:58:44,753 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 05:58:44,796 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:58:44,796 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:58:44,796 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:58:44,796 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:58:44,796 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:58:44,797 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:58:44,797 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:58:44,797 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:58:44,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states. [2020-12-22 05:58:44,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 05:58:44,868 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:44,869 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] [2020-12-22 05:58:44,870 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:44,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:44,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1130982941, now seen corresponding path program 1 times [2020-12-22 05:58:44,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:44,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624731922] [2020-12-22 05:58:44,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:45,385 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 05:58:45,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624731922] [2020-12-22 05:58:45,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:45,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:45,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101227100] [2020-12-22 05:58:45,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:58:45,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:45,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:58:45,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:58:45,417 INFO L87 Difference]: Start difference. First operand 2319 states. Second operand 3 states. [2020-12-22 05:58:45,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:45,755 INFO L93 Difference]: Finished difference Result 6877 states and 13043 transitions. [2020-12-22 05:58:45,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:58:45,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-12-22 05:58:45,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:45,813 INFO L225 Difference]: With dead ends: 6877 [2020-12-22 05:58:45,814 INFO L226 Difference]: Without dead ends: 4563 [2020-12-22 05:58:45,828 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 05:58:45,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4563 states. [2020-12-22 05:58:46,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4563 to 2315. [2020-12-22 05:58:46,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2315 states. [2020-12-22 05:58:46,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2315 states to 2315 states and 4378 transitions. [2020-12-22 05:58:46,014 INFO L78 Accepts]: Start accepts. Automaton has 2315 states and 4378 transitions. Word has length 47 [2020-12-22 05:58:46,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:46,015 INFO L481 AbstractCegarLoop]: Abstraction has 2315 states and 4378 transitions. [2020-12-22 05:58:46,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:58:46,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2315 states and 4378 transitions. [2020-12-22 05:58:46,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 05:58:46,019 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:46,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:46,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:58:46,020 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:46,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:46,021 INFO L82 PathProgramCache]: Analyzing trace with hash 544606887, now seen corresponding path program 1 times [2020-12-22 05:58:46,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:46,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179232047] [2020-12-22 05:58:46,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:46,169 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 05:58:46,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179232047] [2020-12-22 05:58:46,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:46,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:46,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512430786] [2020-12-22 05:58:46,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:46,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:46,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:46,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:46,175 INFO L87 Difference]: Start difference. First operand 2315 states and 4378 transitions. Second operand 4 states. [2020-12-22 05:58:46,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:46,571 INFO L93 Difference]: Finished difference Result 9014 states and 17067 transitions. [2020-12-22 05:58:46,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:46,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 05:58:46,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:46,614 INFO L225 Difference]: With dead ends: 9014 [2020-12-22 05:58:46,614 INFO L226 Difference]: Without dead ends: 6721 [2020-12-22 05:58:46,623 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 05:58:46,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6721 states. [2020-12-22 05:58:46,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6721 to 2291. [2020-12-22 05:58:46,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2291 states. [2020-12-22 05:58:46,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 4325 transitions. [2020-12-22 05:58:46,755 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 4325 transitions. Word has length 54 [2020-12-22 05:58:46,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:46,755 INFO L481 AbstractCegarLoop]: Abstraction has 2291 states and 4325 transitions. [2020-12-22 05:58:46,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:46,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 4325 transitions. [2020-12-22 05:58:46,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 05:58:46,761 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:46,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:46,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:58:46,762 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:46,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:46,766 INFO L82 PathProgramCache]: Analyzing trace with hash -727744059, now seen corresponding path program 1 times [2020-12-22 05:58:46,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:46,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099148063] [2020-12-22 05:58:46,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:46,995 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 05:58:46,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099148063] [2020-12-22 05:58:46,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:46,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:46,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327207344] [2020-12-22 05:58:46,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:46,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:47,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:47,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:47,001 INFO L87 Difference]: Start difference. First operand 2291 states and 4325 transitions. Second operand 4 states. [2020-12-22 05:58:47,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:47,366 INFO L93 Difference]: Finished difference Result 6781 states and 12826 transitions. [2020-12-22 05:58:47,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:47,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-12-22 05:58:47,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:47,395 INFO L225 Difference]: With dead ends: 6781 [2020-12-22 05:58:47,395 INFO L226 Difference]: Without dead ends: 4512 [2020-12-22 05:58:47,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:47,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4512 states. [2020-12-22 05:58:47,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4512 to 2291. [2020-12-22 05:58:47,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2291 states. [2020-12-22 05:58:47,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 4319 transitions. [2020-12-22 05:58:47,518 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 4319 transitions. Word has length 55 [2020-12-22 05:58:47,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:47,526 INFO L481 AbstractCegarLoop]: Abstraction has 2291 states and 4319 transitions. [2020-12-22 05:58:47,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:47,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 4319 transitions. [2020-12-22 05:58:47,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 05:58:47,530 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:47,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:47,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:58:47,530 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:47,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:47,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1677018580, now seen corresponding path program 1 times [2020-12-22 05:58:47,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:47,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089587002] [2020-12-22 05:58:47,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:47,671 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 05:58:47,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089587002] [2020-12-22 05:58:47,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:47,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:47,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146956759] [2020-12-22 05:58:47,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:47,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:47,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:47,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:47,678 INFO L87 Difference]: Start difference. First operand 2291 states and 4319 transitions. Second operand 4 states. [2020-12-22 05:58:48,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:48,033 INFO L93 Difference]: Finished difference Result 6781 states and 12814 transitions. [2020-12-22 05:58:48,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:48,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-12-22 05:58:48,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:48,062 INFO L225 Difference]: With dead ends: 6781 [2020-12-22 05:58:48,063 INFO L226 Difference]: Without dead ends: 4512 [2020-12-22 05:58:48,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:48,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4512 states. [2020-12-22 05:58:48,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4512 to 2291. [2020-12-22 05:58:48,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2291 states. [2020-12-22 05:58:48,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 4313 transitions. [2020-12-22 05:58:48,269 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 4313 transitions. Word has length 57 [2020-12-22 05:58:48,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:48,271 INFO L481 AbstractCegarLoop]: Abstraction has 2291 states and 4313 transitions. [2020-12-22 05:58:48,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:48,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 4313 transitions. [2020-12-22 05:58:48,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 05:58:48,275 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:48,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:48,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:58:48,276 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:48,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:48,277 INFO L82 PathProgramCache]: Analyzing trace with hash 654883119, now seen corresponding path program 1 times [2020-12-22 05:58:48,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:48,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004030756] [2020-12-22 05:58:48,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:48,386 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 05:58:48,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004030756] [2020-12-22 05:58:48,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:48,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:48,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103742308] [2020-12-22 05:58:48,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:48,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:48,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:48,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:48,390 INFO L87 Difference]: Start difference. First operand 2291 states and 4313 transitions. Second operand 4 states. [2020-12-22 05:58:48,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:48,895 INFO L93 Difference]: Finished difference Result 11205 states and 21180 transitions. [2020-12-22 05:58:48,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:48,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-12-22 05:58:48,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:48,953 INFO L225 Difference]: With dead ends: 11205 [2020-12-22 05:58:48,953 INFO L226 Difference]: Without dead ends: 8936 [2020-12-22 05:58:48,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:48,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8936 states. [2020-12-22 05:58:49,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8936 to 2291. [2020-12-22 05:58:49,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2291 states. [2020-12-22 05:58:49,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 4312 transitions. [2020-12-22 05:58:49,120 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 4312 transitions. Word has length 59 [2020-12-22 05:58:49,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:49,120 INFO L481 AbstractCegarLoop]: Abstraction has 2291 states and 4312 transitions. [2020-12-22 05:58:49,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:49,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 4312 transitions. [2020-12-22 05:58:49,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 05:58:49,122 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:49,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:49,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 05:58:49,123 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:49,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:49,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1117046252, now seen corresponding path program 1 times [2020-12-22 05:58:49,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:49,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314197479] [2020-12-22 05:58:49,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:49,238 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 05:58:49,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314197479] [2020-12-22 05:58:49,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:49,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:49,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847592459] [2020-12-22 05:58:49,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:49,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:49,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:49,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:49,240 INFO L87 Difference]: Start difference. First operand 2291 states and 4312 transitions. Second operand 4 states. [2020-12-22 05:58:49,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:49,621 INFO L93 Difference]: Finished difference Result 6781 states and 12801 transitions. [2020-12-22 05:58:49,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:49,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-22 05:58:49,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:49,636 INFO L225 Difference]: With dead ends: 6781 [2020-12-22 05:58:49,637 INFO L226 Difference]: Without dead ends: 4512 [2020-12-22 05:58:49,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:49,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4512 states. [2020-12-22 05:58:49,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4512 to 2291. [2020-12-22 05:58:49,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2291 states. [2020-12-22 05:58:49,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 4306 transitions. [2020-12-22 05:58:49,779 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 4306 transitions. Word has length 60 [2020-12-22 05:58:49,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:49,780 INFO L481 AbstractCegarLoop]: Abstraction has 2291 states and 4306 transitions. [2020-12-22 05:58:49,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:49,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 4306 transitions. [2020-12-22 05:58:49,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 05:58:49,782 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:49,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:49,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 05:58:49,782 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:49,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:49,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1300648748, now seen corresponding path program 1 times [2020-12-22 05:58:49,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:49,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778694221] [2020-12-22 05:58:49,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:49,882 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 05:58:49,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778694221] [2020-12-22 05:58:49,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:49,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:49,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261885884] [2020-12-22 05:58:49,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:49,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:49,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:49,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:49,885 INFO L87 Difference]: Start difference. First operand 2291 states and 4306 transitions. Second operand 4 states. [2020-12-22 05:58:50,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:50,231 INFO L93 Difference]: Finished difference Result 6781 states and 12789 transitions. [2020-12-22 05:58:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:50,231 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-12-22 05:58:50,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:50,246 INFO L225 Difference]: With dead ends: 6781 [2020-12-22 05:58:50,246 INFO L226 Difference]: Without dead ends: 4512 [2020-12-22 05:58:50,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:50,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4512 states. [2020-12-22 05:58:50,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4512 to 2291. [2020-12-22 05:58:50,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2291 states. [2020-12-22 05:58:50,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 4300 transitions. [2020-12-22 05:58:50,377 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 4300 transitions. Word has length 61 [2020-12-22 05:58:50,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:50,377 INFO L481 AbstractCegarLoop]: Abstraction has 2291 states and 4300 transitions. [2020-12-22 05:58:50,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:50,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 4300 transitions. [2020-12-22 05:58:50,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 05:58:50,379 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:50,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:50,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 05:58:50,380 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:50,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:50,381 INFO L82 PathProgramCache]: Analyzing trace with hash 509241625, now seen corresponding path program 1 times [2020-12-22 05:58:50,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:50,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815364112] [2020-12-22 05:58:50,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:50,478 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 05:58:50,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815364112] [2020-12-22 05:58:50,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:50,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:50,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155494172] [2020-12-22 05:58:50,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:50,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:50,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:50,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:50,481 INFO L87 Difference]: Start difference. First operand 2291 states and 4300 transitions. Second operand 4 states. [2020-12-22 05:58:50,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:50,867 INFO L93 Difference]: Finished difference Result 8972 states and 16933 transitions. [2020-12-22 05:58:50,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:50,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 05:58:50,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:50,892 INFO L225 Difference]: With dead ends: 8972 [2020-12-22 05:58:50,892 INFO L226 Difference]: Without dead ends: 6709 [2020-12-22 05:58:50,900 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 05:58:50,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6709 states. [2020-12-22 05:58:51,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6709 to 2293. [2020-12-22 05:58:51,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2293 states. [2020-12-22 05:58:51,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2293 states to 2293 states and 4301 transitions. [2020-12-22 05:58:51,054 INFO L78 Accepts]: Start accepts. Automaton has 2293 states and 4301 transitions. Word has length 62 [2020-12-22 05:58:51,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:51,056 INFO L481 AbstractCegarLoop]: Abstraction has 2293 states and 4301 transitions. [2020-12-22 05:58:51,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:51,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2293 states and 4301 transitions. [2020-12-22 05:58:51,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 05:58:51,061 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:51,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:51,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 05:58:51,061 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:51,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:51,062 INFO L82 PathProgramCache]: Analyzing trace with hash -329996983, now seen corresponding path program 1 times [2020-12-22 05:58:51,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:51,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22574512] [2020-12-22 05:58:51,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:51,139 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 05:58:51,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22574512] [2020-12-22 05:58:51,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:51,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:51,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981988889] [2020-12-22 05:58:51,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:51,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:51,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:51,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:51,147 INFO L87 Difference]: Start difference. First operand 2293 states and 4301 transitions. Second operand 4 states. [2020-12-22 05:58:51,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:51,593 INFO L93 Difference]: Finished difference Result 8964 states and 16913 transitions. [2020-12-22 05:58:51,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:51,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-12-22 05:58:51,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:51,613 INFO L225 Difference]: With dead ends: 8964 [2020-12-22 05:58:51,614 INFO L226 Difference]: Without dead ends: 6704 [2020-12-22 05:58:51,621 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 05:58:51,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6704 states. [2020-12-22 05:58:51,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6704 to 2298. [2020-12-22 05:58:51,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2298 states. [2020-12-22 05:58:51,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4309 transitions. [2020-12-22 05:58:51,778 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4309 transitions. Word has length 63 [2020-12-22 05:58:51,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:51,778 INFO L481 AbstractCegarLoop]: Abstraction has 2298 states and 4309 transitions. [2020-12-22 05:58:51,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:51,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4309 transitions. [2020-12-22 05:58:51,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 05:58:51,785 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:51,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:51,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 05:58:51,786 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:51,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:51,786 INFO L82 PathProgramCache]: Analyzing trace with hash -300266866, now seen corresponding path program 1 times [2020-12-22 05:58:51,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:51,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130610122] [2020-12-22 05:58:51,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:51,851 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 05:58:51,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130610122] [2020-12-22 05:58:51,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:51,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:51,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514705107] [2020-12-22 05:58:51,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:58:51,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:51,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:58:51,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:58:51,854 INFO L87 Difference]: Start difference. First operand 2298 states and 4309 transitions. Second operand 3 states. [2020-12-22 05:58:52,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:52,005 INFO L93 Difference]: Finished difference Result 4553 states and 8560 transitions. [2020-12-22 05:58:52,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:58:52,006 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 05:58:52,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:52,014 INFO L225 Difference]: With dead ends: 4553 [2020-12-22 05:58:52,014 INFO L226 Difference]: Without dead ends: 2292 [2020-12-22 05:58:52,019 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 05:58:52,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2020-12-22 05:58:52,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 2292. [2020-12-22 05:58:52,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2292 states. [2020-12-22 05:58:52,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 4297 transitions. [2020-12-22 05:58:52,143 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 4297 transitions. Word has length 64 [2020-12-22 05:58:52,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:52,143 INFO L481 AbstractCegarLoop]: Abstraction has 2292 states and 4297 transitions. [2020-12-22 05:58:52,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:58:52,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 4297 transitions. [2020-12-22 05:58:52,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 05:58:52,147 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:52,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:52,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 05:58:52,147 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:52,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:52,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1687101641, now seen corresponding path program 1 times [2020-12-22 05:58:52,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:52,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855758628] [2020-12-22 05:58:52,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:52,230 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 05:58:52,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855758628] [2020-12-22 05:58:52,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:52,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:58:52,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416922275] [2020-12-22 05:58:52,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:58:52,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:52,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:58:52,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:52,235 INFO L87 Difference]: Start difference. First operand 2292 states and 4297 transitions. Second operand 5 states. [2020-12-22 05:58:52,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:52,441 INFO L93 Difference]: Finished difference Result 4497 states and 8473 transitions. [2020-12-22 05:58:52,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:58:52,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-12-22 05:58:52,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:52,450 INFO L225 Difference]: With dead ends: 4497 [2020-12-22 05:58:52,450 INFO L226 Difference]: Without dead ends: 2279 [2020-12-22 05:58:52,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:58:52,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2020-12-22 05:58:52,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2279. [2020-12-22 05:58:52,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2279 states. [2020-12-22 05:58:52,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 4275 transitions. [2020-12-22 05:58:52,552 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 4275 transitions. Word has length 66 [2020-12-22 05:58:52,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:52,552 INFO L481 AbstractCegarLoop]: Abstraction has 2279 states and 4275 transitions. [2020-12-22 05:58:52,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:58:52,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 4275 transitions. [2020-12-22 05:58:52,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 05:58:52,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:52,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:52,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 05:58:52,555 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:52,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:52,556 INFO L82 PathProgramCache]: Analyzing trace with hash -544783691, now seen corresponding path program 1 times [2020-12-22 05:58:52,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:52,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083364985] [2020-12-22 05:58:52,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:52,634 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 05:58:52,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083364985] [2020-12-22 05:58:52,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:52,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:58:52,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340054299] [2020-12-22 05:58:52,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:58:52,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:52,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:58:52,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:52,636 INFO L87 Difference]: Start difference. First operand 2279 states and 4275 transitions. Second operand 5 states. [2020-12-22 05:58:52,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:52,838 INFO L93 Difference]: Finished difference Result 4491 states and 8462 transitions. [2020-12-22 05:58:52,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:52,838 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-12-22 05:58:52,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:52,847 INFO L225 Difference]: With dead ends: 4491 [2020-12-22 05:58:52,847 INFO L226 Difference]: Without dead ends: 2273 [2020-12-22 05:58:52,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:58:52,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2020-12-22 05:58:52,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2273. [2020-12-22 05:58:52,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2273 states. [2020-12-22 05:58:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2273 states to 2273 states and 4266 transitions. [2020-12-22 05:58:52,953 INFO L78 Accepts]: Start accepts. Automaton has 2273 states and 4266 transitions. Word has length 69 [2020-12-22 05:58:52,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:52,955 INFO L481 AbstractCegarLoop]: Abstraction has 2273 states and 4266 transitions. [2020-12-22 05:58:52,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:58:52,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2273 states and 4266 transitions. [2020-12-22 05:58:52,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 05:58:52,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:52,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:52,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 05:58:52,961 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:52,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:52,961 INFO L82 PathProgramCache]: Analyzing trace with hash 746929973, now seen corresponding path program 1 times [2020-12-22 05:58:52,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:52,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042137118] [2020-12-22 05:58:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:53,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:58:53,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042137118] [2020-12-22 05:58:53,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:53,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:53,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989089107] [2020-12-22 05:58:53,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:53,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:53,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:53,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:53,039 INFO L87 Difference]: Start difference. First operand 2273 states and 4266 transitions. Second operand 4 states. [2020-12-22 05:58:53,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:53,171 INFO L93 Difference]: Finished difference Result 4485 states and 8453 transitions. [2020-12-22 05:58:53,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:58:53,172 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-12-22 05:58:53,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:53,179 INFO L225 Difference]: With dead ends: 4485 [2020-12-22 05:58:53,179 INFO L226 Difference]: Without dead ends: 2259 [2020-12-22 05:58:53,189 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 05:58:53,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2020-12-22 05:58:53,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 2259. [2020-12-22 05:58:53,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2259 states. [2020-12-22 05:58:53,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 4245 transitions. [2020-12-22 05:58:53,290 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 4245 transitions. Word has length 69 [2020-12-22 05:58:53,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:53,291 INFO L481 AbstractCegarLoop]: Abstraction has 2259 states and 4245 transitions. [2020-12-22 05:58:53,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:53,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 4245 transitions. [2020-12-22 05:58:53,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 05:58:53,293 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:53,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:53,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 05:58:53,294 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:53,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:53,294 INFO L82 PathProgramCache]: Analyzing trace with hash -276984670, now seen corresponding path program 1 times [2020-12-22 05:58:53,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:53,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135654567] [2020-12-22 05:58:53,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:53,400 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 05:58:53,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135654567] [2020-12-22 05:58:53,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:53,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:58:53,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984547964] [2020-12-22 05:58:53,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:58:53,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:53,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:58:53,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:58:53,402 INFO L87 Difference]: Start difference. First operand 2259 states and 4245 transitions. Second operand 6 states. [2020-12-22 05:58:53,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:53,659 INFO L93 Difference]: Finished difference Result 4485 states and 8448 transitions. [2020-12-22 05:58:53,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:58:53,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-12-22 05:58:53,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:53,668 INFO L225 Difference]: With dead ends: 4485 [2020-12-22 05:58:53,668 INFO L226 Difference]: Without dead ends: 2279 [2020-12-22 05:58:53,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:58:53,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2020-12-22 05:58:53,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2259. [2020-12-22 05:58:53,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2259 states. [2020-12-22 05:58:53,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 4244 transitions. [2020-12-22 05:58:53,780 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 4244 transitions. Word has length 70 [2020-12-22 05:58:53,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:53,781 INFO L481 AbstractCegarLoop]: Abstraction has 2259 states and 4244 transitions. [2020-12-22 05:58:53,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:58:53,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 4244 transitions. [2020-12-22 05:58:53,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 05:58:53,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:53,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:53,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 05:58:53,784 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:53,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:53,784 INFO L82 PathProgramCache]: Analyzing trace with hash 918713326, now seen corresponding path program 1 times [2020-12-22 05:58:53,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:53,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859071939] [2020-12-22 05:58:53,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:53,866 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 05:58:53,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859071939] [2020-12-22 05:58:53,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:53,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:58:53,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877269657] [2020-12-22 05:58:53,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:58:53,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:53,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:58:53,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:58:53,870 INFO L87 Difference]: Start difference. First operand 2259 states and 4244 transitions. Second operand 6 states. [2020-12-22 05:58:54,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:54,150 INFO L93 Difference]: Finished difference Result 4475 states and 8429 transitions. [2020-12-22 05:58:54,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:58:54,151 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-12-22 05:58:54,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:54,158 INFO L225 Difference]: With dead ends: 4475 [2020-12-22 05:58:54,158 INFO L226 Difference]: Without dead ends: 2274 [2020-12-22 05:58:54,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:58:54,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2020-12-22 05:58:54,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 2259. [2020-12-22 05:58:54,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2259 states. [2020-12-22 05:58:54,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 4243 transitions. [2020-12-22 05:58:54,266 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 4243 transitions. Word has length 71 [2020-12-22 05:58:54,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:54,266 INFO L481 AbstractCegarLoop]: Abstraction has 2259 states and 4243 transitions. [2020-12-22 05:58:54,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:58:54,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 4243 transitions. [2020-12-22 05:58:54,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 05:58:54,269 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:54,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:54,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 05:58:54,270 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:54,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:54,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1035877837, now seen corresponding path program 1 times [2020-12-22 05:58:54,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:54,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965976860] [2020-12-22 05:58:54,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:54,376 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 05:58:54,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965976860] [2020-12-22 05:58:54,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:54,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:54,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304922702] [2020-12-22 05:58:54,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:58:54,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:54,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:58:54,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:54,381 INFO L87 Difference]: Start difference. First operand 2259 states and 4243 transitions. Second operand 5 states. [2020-12-22 05:58:56,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:56,203 INFO L93 Difference]: Finished difference Result 8993 states and 16919 transitions. [2020-12-22 05:58:56,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:58:56,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-12-22 05:58:56,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:56,224 INFO L225 Difference]: With dead ends: 8993 [2020-12-22 05:58:56,224 INFO L226 Difference]: Without dead ends: 6807 [2020-12-22 05:58:56,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 05:58:56,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6807 states. [2020-12-22 05:58:56,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6807 to 2263. [2020-12-22 05:58:56,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2263 states. [2020-12-22 05:58:56,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 4247 transitions. [2020-12-22 05:58:56,381 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 4247 transitions. Word has length 72 [2020-12-22 05:58:56,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:56,381 INFO L481 AbstractCegarLoop]: Abstraction has 2263 states and 4247 transitions. [2020-12-22 05:58:56,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:58:56,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 4247 transitions. [2020-12-22 05:58:56,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 05:58:56,385 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:56,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:56,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 05:58:56,386 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:56,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:56,387 INFO L82 PathProgramCache]: Analyzing trace with hash -380545157, now seen corresponding path program 1 times [2020-12-22 05:58:56,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:56,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328952444] [2020-12-22 05:58:56,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:56,472 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 05:58:56,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328952444] [2020-12-22 05:58:56,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:56,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:58:56,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574740689] [2020-12-22 05:58:56,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:58:56,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:56,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:58:56,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:58:56,475 INFO L87 Difference]: Start difference. First operand 2263 states and 4247 transitions. Second operand 4 states. [2020-12-22 05:58:58,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:58,177 INFO L93 Difference]: Finished difference Result 6517 states and 12216 transitions. [2020-12-22 05:58:58,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:58:58,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-12-22 05:58:58,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:58,187 INFO L225 Difference]: With dead ends: 6517 [2020-12-22 05:58:58,187 INFO L226 Difference]: Without dead ends: 4314 [2020-12-22 05:58:58,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:58,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4314 states. [2020-12-22 05:58:58,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4314 to 3080. [2020-12-22 05:58:58,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3080 states. [2020-12-22 05:58:58,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3080 states to 3080 states and 5728 transitions. [2020-12-22 05:58:58,406 INFO L78 Accepts]: Start accepts. Automaton has 3080 states and 5728 transitions. Word has length 73 [2020-12-22 05:58:58,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:58,406 INFO L481 AbstractCegarLoop]: Abstraction has 3080 states and 5728 transitions. [2020-12-22 05:58:58,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:58:58,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3080 states and 5728 transitions. [2020-12-22 05:58:58,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 05:58:58,409 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:58,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:58:58,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 05:58:58,410 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:58,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:58,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1816838429, now seen corresponding path program 1 times [2020-12-22 05:58:58,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:58,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17221469] [2020-12-22 05:58:58,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:58,489 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 05:58:58,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17221469] [2020-12-22 05:58:58,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:58,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:58,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947086357] [2020-12-22 05:58:58,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:58:58,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:58,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:58:58,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:58,492 INFO L87 Difference]: Start difference. First operand 3080 states and 5728 transitions. Second operand 5 states. [2020-12-22 05:58:59,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:59,977 INFO L93 Difference]: Finished difference Result 21999 states and 41209 transitions. [2020-12-22 05:58:59,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:58:59,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-12-22 05:58:59,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:00,007 INFO L225 Difference]: With dead ends: 21999 [2020-12-22 05:59:00,008 INFO L226 Difference]: Without dead ends: 18988 [2020-12-22 05:59:00,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 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 05:59:00,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18988 states. [2020-12-22 05:59:00,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18988 to 5627. [2020-12-22 05:59:00,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5627 states. [2020-12-22 05:59:00,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5627 states to 5627 states and 10520 transitions. [2020-12-22 05:59:00,421 INFO L78 Accepts]: Start accepts. Automaton has 5627 states and 10520 transitions. Word has length 75 [2020-12-22 05:59:00,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:00,421 INFO L481 AbstractCegarLoop]: Abstraction has 5627 states and 10520 transitions. [2020-12-22 05:59:00,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:00,422 INFO L276 IsEmpty]: Start isEmpty. Operand 5627 states and 10520 transitions. [2020-12-22 05:59:00,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 05:59:00,425 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:00,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:00,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 05:59:00,426 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:00,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:00,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1950851935, now seen corresponding path program 1 times [2020-12-22 05:59:00,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:00,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035516791] [2020-12-22 05:59:00,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:00,523 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 05:59:00,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035516791] [2020-12-22 05:59:00,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:00,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:00,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939138827] [2020-12-22 05:59:00,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:00,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:00,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:00,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:00,526 INFO L87 Difference]: Start difference. First operand 5627 states and 10520 transitions. Second operand 4 states. [2020-12-22 05:59:01,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:01,155 INFO L93 Difference]: Finished difference Result 13750 states and 25696 transitions. [2020-12-22 05:59:01,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:01,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-12-22 05:59:01,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:01,172 INFO L225 Difference]: With dead ends: 13750 [2020-12-22 05:59:01,173 INFO L226 Difference]: Without dead ends: 11326 [2020-12-22 05:59:01,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:01,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11326 states. [2020-12-22 05:59:01,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11326 to 7800. [2020-12-22 05:59:01,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7800 states. [2020-12-22 05:59:01,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7800 states to 7800 states and 14579 transitions. [2020-12-22 05:59:01,762 INFO L78 Accepts]: Start accepts. Automaton has 7800 states and 14579 transitions. Word has length 75 [2020-12-22 05:59:01,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:01,762 INFO L481 AbstractCegarLoop]: Abstraction has 7800 states and 14579 transitions. [2020-12-22 05:59:01,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:01,763 INFO L276 IsEmpty]: Start isEmpty. Operand 7800 states and 14579 transitions. [2020-12-22 05:59:01,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 05:59:01,765 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:01,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:01,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 05:59:01,765 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:01,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:01,766 INFO L82 PathProgramCache]: Analyzing trace with hash 131116715, now seen corresponding path program 1 times [2020-12-22 05:59:01,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:01,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253737210] [2020-12-22 05:59:01,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:01,838 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 05:59:01,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253737210] [2020-12-22 05:59:01,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:01,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:01,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248430972] [2020-12-22 05:59:01,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:01,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:01,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:01,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:01,841 INFO L87 Difference]: Start difference. First operand 7800 states and 14579 transitions. Second operand 4 states. [2020-12-22 05:59:02,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:02,522 INFO L93 Difference]: Finished difference Result 16178 states and 30139 transitions. [2020-12-22 05:59:02,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:02,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-12-22 05:59:02,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:02,537 INFO L225 Difference]: With dead ends: 16178 [2020-12-22 05:59:02,537 INFO L226 Difference]: Without dead ends: 11770 [2020-12-22 05:59:02,545 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 05:59:02,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11770 states. [2020-12-22 05:59:03,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11770 to 7810. [2020-12-22 05:59:03,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7810 states. [2020-12-22 05:59:03,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7810 states to 7810 states and 14585 transitions. [2020-12-22 05:59:03,150 INFO L78 Accepts]: Start accepts. Automaton has 7810 states and 14585 transitions. Word has length 77 [2020-12-22 05:59:03,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:03,151 INFO L481 AbstractCegarLoop]: Abstraction has 7810 states and 14585 transitions. [2020-12-22 05:59:03,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:59:03,151 INFO L276 IsEmpty]: Start isEmpty. Operand 7810 states and 14585 transitions. [2020-12-22 05:59:03,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 05:59:03,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:03,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:03,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 05:59:03,155 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:03,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:03,155 INFO L82 PathProgramCache]: Analyzing trace with hash -589554988, now seen corresponding path program 1 times [2020-12-22 05:59:03,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:03,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517972360] [2020-12-22 05:59:03,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:03,261 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 05:59:03,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517972360] [2020-12-22 05:59:03,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:03,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:59:03,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034356368] [2020-12-22 05:59:03,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:59:03,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:03,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:59:03,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:59:03,265 INFO L87 Difference]: Start difference. First operand 7810 states and 14585 transitions. Second operand 7 states. [2020-12-22 05:59:04,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:04,258 INFO L93 Difference]: Finished difference Result 16588 states and 30936 transitions. [2020-12-22 05:59:04,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:59:04,259 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-12-22 05:59:04,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:04,277 INFO L225 Difference]: With dead ends: 16588 [2020-12-22 05:59:04,278 INFO L226 Difference]: Without dead ends: 12001 [2020-12-22 05:59:04,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:59:04,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12001 states. [2020-12-22 05:59:04,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12001 to 7814. [2020-12-22 05:59:04,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7814 states. [2020-12-22 05:59:04,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7814 states to 7814 states and 14583 transitions. [2020-12-22 05:59:04,716 INFO L78 Accepts]: Start accepts. Automaton has 7814 states and 14583 transitions. Word has length 83 [2020-12-22 05:59:04,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:04,716 INFO L481 AbstractCegarLoop]: Abstraction has 7814 states and 14583 transitions. [2020-12-22 05:59:04,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:59:04,716 INFO L276 IsEmpty]: Start isEmpty. Operand 7814 states and 14583 transitions. [2020-12-22 05:59:04,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 05:59:04,719 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:04,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:04,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 05:59:04,720 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:04,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:04,720 INFO L82 PathProgramCache]: Analyzing trace with hash -370700270, now seen corresponding path program 1 times [2020-12-22 05:59:04,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:04,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643751120] [2020-12-22 05:59:04,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:04,797 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 05:59:04,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643751120] [2020-12-22 05:59:04,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:04,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:04,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869681718] [2020-12-22 05:59:04,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:04,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:04,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:04,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:04,799 INFO L87 Difference]: Start difference. First operand 7814 states and 14583 transitions. Second operand 5 states. [2020-12-22 05:59:05,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:05,417 INFO L93 Difference]: Finished difference Result 12221 states and 22806 transitions. [2020-12-22 05:59:05,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:05,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-12-22 05:59:05,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:05,430 INFO L225 Difference]: With dead ends: 12221 [2020-12-22 05:59:05,430 INFO L226 Difference]: Without dead ends: 7833 [2020-12-22 05:59:05,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:05,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7833 states. [2020-12-22 05:59:05,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7833 to 7814. [2020-12-22 05:59:05,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7814 states. [2020-12-22 05:59:05,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7814 states to 7814 states and 14568 transitions. [2020-12-22 05:59:05,803 INFO L78 Accepts]: Start accepts. Automaton has 7814 states and 14568 transitions. Word has length 83 [2020-12-22 05:59:05,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:05,803 INFO L481 AbstractCegarLoop]: Abstraction has 7814 states and 14568 transitions. [2020-12-22 05:59:05,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:05,804 INFO L276 IsEmpty]: Start isEmpty. Operand 7814 states and 14568 transitions. [2020-12-22 05:59:05,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 05:59:05,806 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:05,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:05,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 05:59:05,807 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:05,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:05,808 INFO L82 PathProgramCache]: Analyzing trace with hash -957506284, now seen corresponding path program 1 times [2020-12-22 05:59:05,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:05,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172357707] [2020-12-22 05:59:05,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:05,884 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 05:59:05,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172357707] [2020-12-22 05:59:05,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:05,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:05,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356062146] [2020-12-22 05:59:05,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:05,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:05,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:05,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:05,887 INFO L87 Difference]: Start difference. First operand 7814 states and 14568 transitions. Second operand 3 states. [2020-12-22 05:59:06,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:06,241 INFO L93 Difference]: Finished difference Result 14107 states and 26317 transitions. [2020-12-22 05:59:06,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:06,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-22 05:59:06,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:06,252 INFO L225 Difference]: With dead ends: 14107 [2020-12-22 05:59:06,252 INFO L226 Difference]: Without dead ends: 7792 [2020-12-22 05:59:06,260 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 05:59:06,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2020-12-22 05:59:06,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7792. [2020-12-22 05:59:06,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7792 states. [2020-12-22 05:59:06,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7792 states to 7792 states and 14526 transitions. [2020-12-22 05:59:06,591 INFO L78 Accepts]: Start accepts. Automaton has 7792 states and 14526 transitions. Word has length 83 [2020-12-22 05:59:06,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:06,591 INFO L481 AbstractCegarLoop]: Abstraction has 7792 states and 14526 transitions. [2020-12-22 05:59:06,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:06,592 INFO L276 IsEmpty]: Start isEmpty. Operand 7792 states and 14526 transitions. [2020-12-22 05:59:06,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 05:59:06,594 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:06,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:06,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 05:59:06,595 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:06,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:06,595 INFO L82 PathProgramCache]: Analyzing trace with hash 81726334, now seen corresponding path program 1 times [2020-12-22 05:59:06,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:06,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139079196] [2020-12-22 05:59:06,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:06,752 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 05:59:06,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139079196] [2020-12-22 05:59:06,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:06,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:06,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984270871] [2020-12-22 05:59:06,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:06,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:06,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:06,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:06,757 INFO L87 Difference]: Start difference. First operand 7792 states and 14526 transitions. Second operand 5 states. [2020-12-22 05:59:08,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:08,447 INFO L93 Difference]: Finished difference Result 31374 states and 58093 transitions. [2020-12-22 05:59:08,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:08,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-12-22 05:59:08,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:08,482 INFO L225 Difference]: With dead ends: 31374 [2020-12-22 05:59:08,482 INFO L226 Difference]: Without dead ends: 27017 [2020-12-22 05:59:08,490 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 05:59:08,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27017 states. [2020-12-22 05:59:09,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27017 to 9514. [2020-12-22 05:59:09,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9514 states. [2020-12-22 05:59:09,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9514 states to 9514 states and 17504 transitions. [2020-12-22 05:59:09,067 INFO L78 Accepts]: Start accepts. Automaton has 9514 states and 17504 transitions. Word has length 85 [2020-12-22 05:59:09,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:09,068 INFO L481 AbstractCegarLoop]: Abstraction has 9514 states and 17504 transitions. [2020-12-22 05:59:09,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:09,068 INFO L276 IsEmpty]: Start isEmpty. Operand 9514 states and 17504 transitions. [2020-12-22 05:59:09,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 05:59:09,070 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:09,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:09,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 05:59:09,071 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:09,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:09,071 INFO L82 PathProgramCache]: Analyzing trace with hash -233581316, now seen corresponding path program 1 times [2020-12-22 05:59:09,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:09,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735646347] [2020-12-22 05:59:09,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:09,182 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 05:59:09,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735646347] [2020-12-22 05:59:09,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:09,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:09,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452649515] [2020-12-22 05:59:09,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:09,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:09,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:09,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:09,184 INFO L87 Difference]: Start difference. First operand 9514 states and 17504 transitions. Second operand 5 states. [2020-12-22 05:59:10,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:10,504 INFO L93 Difference]: Finished difference Result 15694 states and 28913 transitions. [2020-12-22 05:59:10,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:59:10,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-12-22 05:59:10,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:10,523 INFO L225 Difference]: With dead ends: 15694 [2020-12-22 05:59:10,523 INFO L226 Difference]: Without dead ends: 15681 [2020-12-22 05:59:10,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:10,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15681 states. [2020-12-22 05:59:11,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15681 to 9532. [2020-12-22 05:59:11,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9532 states. [2020-12-22 05:59:11,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9532 states to 9532 states and 17522 transitions. [2020-12-22 05:59:11,057 INFO L78 Accepts]: Start accepts. Automaton has 9532 states and 17522 transitions. Word has length 85 [2020-12-22 05:59:11,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:11,058 INFO L481 AbstractCegarLoop]: Abstraction has 9532 states and 17522 transitions. [2020-12-22 05:59:11,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:11,058 INFO L276 IsEmpty]: Start isEmpty. Operand 9532 states and 17522 transitions. [2020-12-22 05:59:11,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 05:59:11,060 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:11,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:11,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 05:59:11,060 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:11,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:11,061 INFO L82 PathProgramCache]: Analyzing trace with hash 2017105313, now seen corresponding path program 1 times [2020-12-22 05:59:11,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:11,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975797699] [2020-12-22 05:59:11,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:11,141 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 05:59:11,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975797699] [2020-12-22 05:59:11,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:11,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:59:11,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869908964] [2020-12-22 05:59:11,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:59:11,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:11,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:59:11,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:11,144 INFO L87 Difference]: Start difference. First operand 9532 states and 17522 transitions. Second operand 6 states. [2020-12-22 05:59:11,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:11,960 INFO L93 Difference]: Finished difference Result 9551 states and 17540 transitions. [2020-12-22 05:59:11,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:59:11,961 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2020-12-22 05:59:11,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:11,972 INFO L225 Difference]: With dead ends: 9551 [2020-12-22 05:59:11,973 INFO L226 Difference]: Without dead ends: 9538 [2020-12-22 05:59:11,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:59:11,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9538 states. [2020-12-22 05:59:12,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9538 to 9532. [2020-12-22 05:59:12,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9532 states. [2020-12-22 05:59:12,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9532 states to 9532 states and 17512 transitions. [2020-12-22 05:59:12,465 INFO L78 Accepts]: Start accepts. Automaton has 9532 states and 17512 transitions. Word has length 87 [2020-12-22 05:59:12,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:12,466 INFO L481 AbstractCegarLoop]: Abstraction has 9532 states and 17512 transitions. [2020-12-22 05:59:12,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:59:12,466 INFO L276 IsEmpty]: Start isEmpty. Operand 9532 states and 17512 transitions. [2020-12-22 05:59:12,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 05:59:12,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:12,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:12,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 05:59:12,470 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:12,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:12,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2109417211, now seen corresponding path program 1 times [2020-12-22 05:59:12,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:12,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840339958] [2020-12-22 05:59:12,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:12,555 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 05:59:12,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840339958] [2020-12-22 05:59:12,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:12,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:12,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9114187] [2020-12-22 05:59:12,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:12,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:12,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:12,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:12,558 INFO L87 Difference]: Start difference. First operand 9532 states and 17512 transitions. Second operand 5 states. [2020-12-22 05:59:14,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:14,115 INFO L93 Difference]: Finished difference Result 22633 states and 41389 transitions. [2020-12-22 05:59:14,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:14,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-12-22 05:59:14,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:14,138 INFO L225 Difference]: With dead ends: 22633 [2020-12-22 05:59:14,139 INFO L226 Difference]: Without dead ends: 14862 [2020-12-22 05:59:14,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 05:59:14,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14862 states. [2020-12-22 05:59:14,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14862 to 9532. [2020-12-22 05:59:14,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9532 states. [2020-12-22 05:59:14,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9532 states to 9532 states and 17502 transitions. [2020-12-22 05:59:14,812 INFO L78 Accepts]: Start accepts. Automaton has 9532 states and 17502 transitions. Word has length 94 [2020-12-22 05:59:14,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:14,812 INFO L481 AbstractCegarLoop]: Abstraction has 9532 states and 17502 transitions. [2020-12-22 05:59:14,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:14,812 INFO L276 IsEmpty]: Start isEmpty. Operand 9532 states and 17502 transitions. [2020-12-22 05:59:14,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 05:59:14,816 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:14,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:14,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 05:59:14,817 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:14,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:14,817 INFO L82 PathProgramCache]: Analyzing trace with hash 431382755, now seen corresponding path program 1 times [2020-12-22 05:59:14,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:14,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909871665] [2020-12-22 05:59:14,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:14,906 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 05:59:14,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909871665] [2020-12-22 05:59:14,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:14,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:14,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837433003] [2020-12-22 05:59:14,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:14,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:14,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:14,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:14,909 INFO L87 Difference]: Start difference. First operand 9532 states and 17502 transitions. Second operand 5 states. [2020-12-22 05:59:16,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:16,672 INFO L93 Difference]: Finished difference Result 22530 states and 41243 transitions. [2020-12-22 05:59:16,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:16,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-12-22 05:59:16,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:16,690 INFO L225 Difference]: With dead ends: 22530 [2020-12-22 05:59:16,691 INFO L226 Difference]: Without dead ends: 14421 [2020-12-22 05:59:16,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:16,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14421 states. [2020-12-22 05:59:17,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14421 to 9532. [2020-12-22 05:59:17,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9532 states. [2020-12-22 05:59:17,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9532 states to 9532 states and 17306 transitions. [2020-12-22 05:59:17,345 INFO L78 Accepts]: Start accepts. Automaton has 9532 states and 17306 transitions. Word has length 98 [2020-12-22 05:59:17,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:17,345 INFO L481 AbstractCegarLoop]: Abstraction has 9532 states and 17306 transitions. [2020-12-22 05:59:17,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:17,345 INFO L276 IsEmpty]: Start isEmpty. Operand 9532 states and 17306 transitions. [2020-12-22 05:59:17,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 05:59:17,349 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:17,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:17,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 05:59:17,349 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:17,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:17,350 INFO L82 PathProgramCache]: Analyzing trace with hash -197943096, now seen corresponding path program 1 times [2020-12-22 05:59:17,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:17,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346470713] [2020-12-22 05:59:17,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:17,527 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 05:59:17,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346470713] [2020-12-22 05:59:17,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:17,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:17,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615198061] [2020-12-22 05:59:17,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:17,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:17,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:17,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:17,529 INFO L87 Difference]: Start difference. First operand 9532 states and 17306 transitions. Second operand 5 states. [2020-12-22 05:59:19,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:19,409 INFO L93 Difference]: Finished difference Result 27569 states and 50096 transitions. [2020-12-22 05:59:19,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:19,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-12-22 05:59:19,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:19,433 INFO L225 Difference]: With dead ends: 27569 [2020-12-22 05:59:19,433 INFO L226 Difference]: Without dead ends: 21422 [2020-12-22 05:59:19,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 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 05:59:19,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21422 states. [2020-12-22 05:59:20,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21422 to 9532. [2020-12-22 05:59:20,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9532 states. [2020-12-22 05:59:20,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9532 states to 9532 states and 17290 transitions. [2020-12-22 05:59:20,031 INFO L78 Accepts]: Start accepts. Automaton has 9532 states and 17290 transitions. Word has length 99 [2020-12-22 05:59:20,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:20,031 INFO L481 AbstractCegarLoop]: Abstraction has 9532 states and 17290 transitions. [2020-12-22 05:59:20,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:20,031 INFO L276 IsEmpty]: Start isEmpty. Operand 9532 states and 17290 transitions. [2020-12-22 05:59:20,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 05:59:20,035 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:20,035 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:20,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 05:59:20,035 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:20,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:20,036 INFO L82 PathProgramCache]: Analyzing trace with hash 2091485265, now seen corresponding path program 1 times [2020-12-22 05:59:20,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:20,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489379869] [2020-12-22 05:59:20,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:20,119 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 05:59:20,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489379869] [2020-12-22 05:59:20,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:20,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:20,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555558705] [2020-12-22 05:59:20,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:20,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:20,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:20,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:20,124 INFO L87 Difference]: Start difference. First operand 9532 states and 17290 transitions. Second operand 5 states. [2020-12-22 05:59:20,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:20,817 INFO L93 Difference]: Finished difference Result 15948 states and 28742 transitions. [2020-12-22 05:59:20,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:20,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-12-22 05:59:20,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:20,832 INFO L225 Difference]: With dead ends: 15948 [2020-12-22 05:59:20,833 INFO L226 Difference]: Without dead ends: 9545 [2020-12-22 05:59:20,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:20,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9545 states. [2020-12-22 05:59:21,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9545 to 9532. [2020-12-22 05:59:21,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9532 states. [2020-12-22 05:59:21,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9532 states to 9532 states and 17086 transitions. [2020-12-22 05:59:21,452 INFO L78 Accepts]: Start accepts. Automaton has 9532 states and 17086 transitions. Word has length 100 [2020-12-22 05:59:21,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:21,453 INFO L481 AbstractCegarLoop]: Abstraction has 9532 states and 17086 transitions. [2020-12-22 05:59:21,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:21,453 INFO L276 IsEmpty]: Start isEmpty. Operand 9532 states and 17086 transitions. [2020-12-22 05:59:21,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 05:59:21,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:21,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:21,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 05:59:21,456 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:21,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:21,456 INFO L82 PathProgramCache]: Analyzing trace with hash -859735748, now seen corresponding path program 1 times [2020-12-22 05:59:21,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:21,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895122181] [2020-12-22 05:59:21,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:21,574 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 05:59:21,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895122181] [2020-12-22 05:59:21,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:21,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:21,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209139568] [2020-12-22 05:59:21,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:21,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:21,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:21,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:21,576 INFO L87 Difference]: Start difference. First operand 9532 states and 17086 transitions. Second operand 5 states. [2020-12-22 05:59:22,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:22,475 INFO L93 Difference]: Finished difference Result 15212 states and 27376 transitions. [2020-12-22 05:59:22,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:59:22,476 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-12-22 05:59:22,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:22,497 INFO L225 Difference]: With dead ends: 15212 [2020-12-22 05:59:22,497 INFO L226 Difference]: Without dead ends: 15199 [2020-12-22 05:59:22,505 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 05:59:22,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15199 states. [2020-12-22 05:59:23,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15199 to 9547. [2020-12-22 05:59:23,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9547 states. [2020-12-22 05:59:23,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9547 states to 9547 states and 17096 transitions. [2020-12-22 05:59:23,315 INFO L78 Accepts]: Start accepts. Automaton has 9547 states and 17096 transitions. Word has length 101 [2020-12-22 05:59:23,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:23,315 INFO L481 AbstractCegarLoop]: Abstraction has 9547 states and 17096 transitions. [2020-12-22 05:59:23,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:23,315 INFO L276 IsEmpty]: Start isEmpty. Operand 9547 states and 17096 transitions. [2020-12-22 05:59:23,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-22 05:59:23,320 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:23,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:23,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 05:59:23,321 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:23,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:23,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1828741120, now seen corresponding path program 1 times [2020-12-22 05:59:23,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:23,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440340331] [2020-12-22 05:59:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:23,446 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 05:59:23,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440340331] [2020-12-22 05:59:23,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:23,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:23,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552639474] [2020-12-22 05:59:23,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:23,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:23,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:23,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:23,452 INFO L87 Difference]: Start difference. First operand 9547 states and 17096 transitions. Second operand 5 states. [2020-12-22 05:59:26,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:26,842 INFO L93 Difference]: Finished difference Result 48988 states and 88686 transitions. [2020-12-22 05:59:26,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:59:26,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-12-22 05:59:26,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:26,898 INFO L225 Difference]: With dead ends: 48988 [2020-12-22 05:59:26,899 INFO L226 Difference]: Without dead ends: 41202 [2020-12-22 05:59:26,913 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 05:59:26,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41202 states. [2020-12-22 05:59:28,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41202 to 19058. [2020-12-22 05:59:28,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19058 states. [2020-12-22 05:59:28,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19058 states to 19058 states and 34148 transitions. [2020-12-22 05:59:28,344 INFO L78 Accepts]: Start accepts. Automaton has 19058 states and 34148 transitions. Word has length 117 [2020-12-22 05:59:28,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:28,345 INFO L481 AbstractCegarLoop]: Abstraction has 19058 states and 34148 transitions. [2020-12-22 05:59:28,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:28,345 INFO L276 IsEmpty]: Start isEmpty. Operand 19058 states and 34148 transitions. [2020-12-22 05:59:28,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 05:59:28,353 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:28,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:28,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 05:59:28,354 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:28,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:28,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1801123160, now seen corresponding path program 1 times [2020-12-22 05:59:28,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:28,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048609197] [2020-12-22 05:59:28,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:28,427 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 05:59:28,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048609197] [2020-12-22 05:59:28,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:28,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:59:28,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128922141] [2020-12-22 05:59:28,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:59:28,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:28,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:59:28,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:59:28,429 INFO L87 Difference]: Start difference. First operand 19058 states and 34148 transitions. Second operand 3 states. [2020-12-22 05:59:30,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:30,862 INFO L93 Difference]: Finished difference Result 45079 states and 80275 transitions. [2020-12-22 05:59:30,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:59:30,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2020-12-22 05:59:30,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:30,898 INFO L225 Difference]: With dead ends: 45079 [2020-12-22 05:59:30,899 INFO L226 Difference]: Without dead ends: 28822 [2020-12-22 05:59:30,912 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 05:59:30,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28822 states. [2020-12-22 05:59:32,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28822 to 18614. [2020-12-22 05:59:32,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18614 states. [2020-12-22 05:59:32,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18614 states to 18614 states and 33207 transitions. [2020-12-22 05:59:32,123 INFO L78 Accepts]: Start accepts. Automaton has 18614 states and 33207 transitions. Word has length 118 [2020-12-22 05:59:32,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:32,123 INFO L481 AbstractCegarLoop]: Abstraction has 18614 states and 33207 transitions. [2020-12-22 05:59:32,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:59:32,123 INFO L276 IsEmpty]: Start isEmpty. Operand 18614 states and 33207 transitions. [2020-12-22 05:59:32,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 05:59:32,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:32,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:32,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 05:59:32,133 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:32,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:32,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1501041846, now seen corresponding path program 1 times [2020-12-22 05:59:32,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:32,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168726642] [2020-12-22 05:59:32,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:32,220 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 05:59:32,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168726642] [2020-12-22 05:59:32,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:32,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:59:32,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757927254] [2020-12-22 05:59:32,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:32,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:32,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:32,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:32,223 INFO L87 Difference]: Start difference. First operand 18614 states and 33207 transitions. Second operand 5 states. [2020-12-22 05:59:33,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:33,741 INFO L93 Difference]: Finished difference Result 27364 states and 48923 transitions. [2020-12-22 05:59:33,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:59:33,741 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-12-22 05:59:33,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:33,763 INFO L225 Difference]: With dead ends: 27364 [2020-12-22 05:59:33,763 INFO L226 Difference]: Without dead ends: 17994 [2020-12-22 05:59:33,773 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 05:59:33,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17994 states. [2020-12-22 05:59:34,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17994 to 17994. [2020-12-22 05:59:34,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17994 states. [2020-12-22 05:59:34,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17994 states to 17994 states and 32205 transitions. [2020-12-22 05:59:34,896 INFO L78 Accepts]: Start accepts. Automaton has 17994 states and 32205 transitions. Word has length 118 [2020-12-22 05:59:34,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:34,896 INFO L481 AbstractCegarLoop]: Abstraction has 17994 states and 32205 transitions. [2020-12-22 05:59:34,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:34,897 INFO L276 IsEmpty]: Start isEmpty. Operand 17994 states and 32205 transitions. [2020-12-22 05:59:34,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 05:59:34,904 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:34,905 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:34,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 05:59:34,905 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:34,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:34,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1355911847, now seen corresponding path program 1 times [2020-12-22 05:59:34,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:34,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742607867] [2020-12-22 05:59:34,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:35,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:35,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742607867] [2020-12-22 05:59:35,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:35,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:35,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108214818] [2020-12-22 05:59:35,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:35,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:35,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:35,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:35,062 INFO L87 Difference]: Start difference. First operand 17994 states and 32205 transitions. Second operand 5 states. [2020-12-22 05:59:38,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:38,794 INFO L93 Difference]: Finished difference Result 40519 states and 72270 transitions. [2020-12-22 05:59:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:38,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-12-22 05:59:38,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:38,834 INFO L225 Difference]: With dead ends: 40519 [2020-12-22 05:59:38,834 INFO L226 Difference]: Without dead ends: 29490 [2020-12-22 05:59:38,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:38,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29490 states. [2020-12-22 05:59:40,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29490 to 25426. [2020-12-22 05:59:40,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25426 states. [2020-12-22 05:59:40,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25426 states to 25426 states and 45842 transitions. [2020-12-22 05:59:40,578 INFO L78 Accepts]: Start accepts. Automaton has 25426 states and 45842 transitions. Word has length 132 [2020-12-22 05:59:40,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:40,578 INFO L481 AbstractCegarLoop]: Abstraction has 25426 states and 45842 transitions. [2020-12-22 05:59:40,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:40,578 INFO L276 IsEmpty]: Start isEmpty. Operand 25426 states and 45842 transitions. [2020-12-22 05:59:40,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-22 05:59:40,588 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:40,588 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:40,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-12-22 05:59:40,588 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:40,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:40,589 INFO L82 PathProgramCache]: Analyzing trace with hash 462922686, now seen corresponding path program 1 times [2020-12-22 05:59:40,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:40,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369065575] [2020-12-22 05:59:40,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:40,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:40,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369065575] [2020-12-22 05:59:40,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:40,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:40,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933509343] [2020-12-22 05:59:40,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:40,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:40,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:40,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:40,708 INFO L87 Difference]: Start difference. First operand 25426 states and 45842 transitions. Second operand 5 states. [2020-12-22 05:59:45,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:45,690 INFO L93 Difference]: Finished difference Result 64239 states and 115545 transitions. [2020-12-22 05:59:45,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:45,690 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-12-22 05:59:45,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:45,749 INFO L225 Difference]: With dead ends: 64239 [2020-12-22 05:59:45,750 INFO L226 Difference]: Without dead ends: 45810 [2020-12-22 05:59:45,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:45,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45810 states. [2020-12-22 05:59:48,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45810 to 40994. [2020-12-22 05:59:48,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40994 states. [2020-12-22 05:59:48,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40994 states to 40994 states and 74188 transitions. [2020-12-22 05:59:48,898 INFO L78 Accepts]: Start accepts. Automaton has 40994 states and 74188 transitions. Word has length 133 [2020-12-22 05:59:48,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:48,899 INFO L481 AbstractCegarLoop]: Abstraction has 40994 states and 74188 transitions. [2020-12-22 05:59:48,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:48,899 INFO L276 IsEmpty]: Start isEmpty. Operand 40994 states and 74188 transitions. [2020-12-22 05:59:48,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 05:59:48,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:48,909 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:48,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 05:59:48,909 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:48,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:48,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1316231682, now seen corresponding path program 1 times [2020-12-22 05:59:48,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:48,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254131078] [2020-12-22 05:59:48,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:49,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:49,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254131078] [2020-12-22 05:59:49,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:49,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:49,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735770030] [2020-12-22 05:59:49,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:59:49,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:49,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:59:49,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:59:49,173 INFO L87 Difference]: Start difference. First operand 40994 states and 74188 transitions. Second operand 5 states. [2020-12-22 05:59:54,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:59:54,171 INFO L93 Difference]: Finished difference Result 79639 states and 143187 transitions. [2020-12-22 05:59:54,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:59:54,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-12-22 05:59:54,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:59:54,234 INFO L225 Difference]: With dead ends: 79639 [2020-12-22 05:59:54,235 INFO L226 Difference]: Without dead ends: 45634 [2020-12-22 05:59:54,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:59:54,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45634 states. [2020-12-22 05:59:57,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45634 to 40994. [2020-12-22 05:59:57,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40994 states. [2020-12-22 05:59:57,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40994 states to 40994 states and 74164 transitions. [2020-12-22 05:59:57,415 INFO L78 Accepts]: Start accepts. Automaton has 40994 states and 74164 transitions. Word has length 134 [2020-12-22 05:59:57,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:59:57,415 INFO L481 AbstractCegarLoop]: Abstraction has 40994 states and 74164 transitions. [2020-12-22 05:59:57,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:59:57,415 INFO L276 IsEmpty]: Start isEmpty. Operand 40994 states and 74164 transitions. [2020-12-22 05:59:57,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 05:59:57,426 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:59:57,426 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:59:57,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-12-22 05:59:57,427 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:59:57,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:59:57,427 INFO L82 PathProgramCache]: Analyzing trace with hash 2045049158, now seen corresponding path program 1 times [2020-12-22 05:59:57,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:59:57,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191571684] [2020-12-22 05:59:57,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:59:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:59:57,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:59:57,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191571684] [2020-12-22 05:59:57,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:59:57,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:59:57,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919152233] [2020-12-22 05:59:57,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:59:57,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:59:57,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:59:57,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:59:57,509 INFO L87 Difference]: Start difference. First operand 40994 states and 74164 transitions. Second operand 4 states. [2020-12-22 06:00:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:02,000 INFO L93 Difference]: Finished difference Result 107581 states and 196781 transitions. [2020-12-22 06:00:02,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:00:02,000 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-12-22 06:00:02,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:02,122 INFO L225 Difference]: With dead ends: 107581 [2020-12-22 06:00:02,123 INFO L226 Difference]: Without dead ends: 72331 [2020-12-22 06:00:02,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:02,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72331 states. [2020-12-22 06:00:05,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72331 to 41068. [2020-12-22 06:00:05,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41068 states. [2020-12-22 06:00:05,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41068 states to 41068 states and 74238 transitions. [2020-12-22 06:00:05,833 INFO L78 Accepts]: Start accepts. Automaton has 41068 states and 74238 transitions. Word has length 134 [2020-12-22 06:00:05,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:05,833 INFO L481 AbstractCegarLoop]: Abstraction has 41068 states and 74238 transitions. [2020-12-22 06:00:05,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:05,834 INFO L276 IsEmpty]: Start isEmpty. Operand 41068 states and 74238 transitions. [2020-12-22 06:00:05,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-22 06:00:05,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:05,843 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:05,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 06:00:05,844 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:05,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:05,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1921862013, now seen corresponding path program 1 times [2020-12-22 06:00:05,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:05,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228899462] [2020-12-22 06:00:05,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:05,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228899462] [2020-12-22 06:00:05,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:05,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:05,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214425277] [2020-12-22 06:00:05,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:05,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:05,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:05,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:05,964 INFO L87 Difference]: Start difference. First operand 41068 states and 74238 transitions. Second operand 5 states. [2020-12-22 06:00:09,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:09,870 INFO L93 Difference]: Finished difference Result 63256 states and 113630 transitions. [2020-12-22 06:00:09,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:00:09,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-12-22 06:00:09,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:09,916 INFO L225 Difference]: With dead ends: 63256 [2020-12-22 06:00:09,916 INFO L226 Difference]: Without dead ends: 29187 [2020-12-22 06:00:09,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:09,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29187 states. [2020-12-22 06:00:12,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29187 to 27060. [2020-12-22 06:00:12,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27060 states. [2020-12-22 06:00:12,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27060 states to 27060 states and 48515 transitions. [2020-12-22 06:00:12,191 INFO L78 Accepts]: Start accepts. Automaton has 27060 states and 48515 transitions. Word has length 135 [2020-12-22 06:00:12,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:12,192 INFO L481 AbstractCegarLoop]: Abstraction has 27060 states and 48515 transitions. [2020-12-22 06:00:12,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:12,192 INFO L276 IsEmpty]: Start isEmpty. Operand 27060 states and 48515 transitions. [2020-12-22 06:00:12,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-12-22 06:00:12,200 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:12,200 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:12,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-22 06:00:12,200 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:12,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:12,201 INFO L82 PathProgramCache]: Analyzing trace with hash -203295112, now seen corresponding path program 1 times [2020-12-22 06:00:12,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:12,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427172523] [2020-12-22 06:00:12,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:12,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:12,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427172523] [2020-12-22 06:00:12,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:12,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:12,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240427073] [2020-12-22 06:00:12,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:12,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:12,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:12,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:12,316 INFO L87 Difference]: Start difference. First operand 27060 states and 48515 transitions. Second operand 5 states. [2020-12-22 06:00:15,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:15,975 INFO L93 Difference]: Finished difference Result 57954 states and 103952 transitions. [2020-12-22 06:00:15,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:00:15,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-12-22 06:00:15,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:16,024 INFO L225 Difference]: With dead ends: 57954 [2020-12-22 06:00:16,024 INFO L226 Difference]: Without dead ends: 37901 [2020-12-22 06:00:16,039 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 06:00:16,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37901 states. [2020-12-22 06:00:18,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37901 to 27072. [2020-12-22 06:00:18,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27072 states. [2020-12-22 06:00:18,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27072 states to 27072 states and 48527 transitions. [2020-12-22 06:00:18,169 INFO L78 Accepts]: Start accepts. Automaton has 27072 states and 48527 transitions. Word has length 137 [2020-12-22 06:00:18,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:18,169 INFO L481 AbstractCegarLoop]: Abstraction has 27072 states and 48527 transitions. [2020-12-22 06:00:18,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:18,170 INFO L276 IsEmpty]: Start isEmpty. Operand 27072 states and 48527 transitions. [2020-12-22 06:00:18,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 06:00:18,177 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:18,177 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:18,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 06:00:18,177 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:18,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:18,178 INFO L82 PathProgramCache]: Analyzing trace with hash -494399575, now seen corresponding path program 1 times [2020-12-22 06:00:18,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:18,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529984661] [2020-12-22 06:00:18,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:18,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:18,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529984661] [2020-12-22 06:00:18,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:18,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:18,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497834259] [2020-12-22 06:00:18,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:18,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:18,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:18,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:18,294 INFO L87 Difference]: Start difference. First operand 27072 states and 48527 transitions. Second operand 5 states. [2020-12-22 06:00:22,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:22,662 INFO L93 Difference]: Finished difference Result 51021 states and 90759 transitions. [2020-12-22 06:00:22,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:00:22,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-12-22 06:00:22,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:22,704 INFO L225 Difference]: With dead ends: 51021 [2020-12-22 06:00:22,704 INFO L226 Difference]: Without dead ends: 30956 [2020-12-22 06:00:22,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:00:22,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30956 states. [2020-12-22 06:00:24,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30956 to 27048. [2020-12-22 06:00:24,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27048 states. [2020-12-22 06:00:24,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27048 states to 27048 states and 48475 transitions. [2020-12-22 06:00:24,913 INFO L78 Accepts]: Start accepts. Automaton has 27048 states and 48475 transitions. Word has length 138 [2020-12-22 06:00:24,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:24,914 INFO L481 AbstractCegarLoop]: Abstraction has 27048 states and 48475 transitions. [2020-12-22 06:00:24,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:24,914 INFO L276 IsEmpty]: Start isEmpty. Operand 27048 states and 48475 transitions. [2020-12-22 06:00:24,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 06:00:24,920 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:24,920 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:24,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-12-22 06:00:24,925 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:24,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:24,926 INFO L82 PathProgramCache]: Analyzing trace with hash -888766361, now seen corresponding path program 1 times [2020-12-22 06:00:24,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:24,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811719464] [2020-12-22 06:00:24,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:25,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:25,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811719464] [2020-12-22 06:00:25,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:25,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:25,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403815018] [2020-12-22 06:00:25,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:25,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:25,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:25,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:25,017 INFO L87 Difference]: Start difference. First operand 27048 states and 48475 transitions. Second operand 5 states. [2020-12-22 06:00:32,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:32,723 INFO L93 Difference]: Finished difference Result 91539 states and 163314 transitions. [2020-12-22 06:00:32,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:32,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-12-22 06:00:32,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:32,812 INFO L225 Difference]: With dead ends: 91539 [2020-12-22 06:00:32,812 INFO L226 Difference]: Without dead ends: 71498 [2020-12-22 06:00:32,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:00:32,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71498 states. [2020-12-22 06:00:35,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71498 to 33672. [2020-12-22 06:00:35,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33672 states. [2020-12-22 06:00:35,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33672 states to 33672 states and 60889 transitions. [2020-12-22 06:00:35,655 INFO L78 Accepts]: Start accepts. Automaton has 33672 states and 60889 transitions. Word has length 138 [2020-12-22 06:00:35,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:35,655 INFO L481 AbstractCegarLoop]: Abstraction has 33672 states and 60889 transitions. [2020-12-22 06:00:35,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:35,655 INFO L276 IsEmpty]: Start isEmpty. Operand 33672 states and 60889 transitions. [2020-12-22 06:00:35,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-22 06:00:35,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:35,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:35,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-12-22 06:00:35,662 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:35,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:35,662 INFO L82 PathProgramCache]: Analyzing trace with hash 663002631, now seen corresponding path program 1 times [2020-12-22 06:00:35,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:35,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030932106] [2020-12-22 06:00:35,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:35,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:35,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030932106] [2020-12-22 06:00:35,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:35,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:00:35,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380434950] [2020-12-22 06:00:35,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:00:35,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:35,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:00:35,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:00:35,956 INFO L87 Difference]: Start difference. First operand 33672 states and 60889 transitions. Second operand 4 states. [2020-12-22 06:00:38,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:38,716 INFO L93 Difference]: Finished difference Result 67620 states and 122188 transitions. [2020-12-22 06:00:38,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:00:38,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-12-22 06:00:38,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:38,760 INFO L225 Difference]: With dead ends: 67620 [2020-12-22 06:00:38,760 INFO L226 Difference]: Without dead ends: 34373 [2020-12-22 06:00:38,775 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 06:00:38,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34373 states. [2020-12-22 06:00:41,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34373 to 33608. [2020-12-22 06:00:41,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33608 states. [2020-12-22 06:00:41,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33608 states to 33608 states and 60772 transitions. [2020-12-22 06:00:41,394 INFO L78 Accepts]: Start accepts. Automaton has 33608 states and 60772 transitions. Word has length 139 [2020-12-22 06:00:41,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:41,394 INFO L481 AbstractCegarLoop]: Abstraction has 33608 states and 60772 transitions. [2020-12-22 06:00:41,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:00:41,394 INFO L276 IsEmpty]: Start isEmpty. Operand 33608 states and 60772 transitions. [2020-12-22 06:00:41,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-22 06:00:41,404 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:41,404 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:41,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-12-22 06:00:41,404 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:41,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:41,405 INFO L82 PathProgramCache]: Analyzing trace with hash -830965809, now seen corresponding path program 1 times [2020-12-22 06:00:41,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:41,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866129057] [2020-12-22 06:00:41,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:41,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866129057] [2020-12-22 06:00:41,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:41,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:41,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676265082] [2020-12-22 06:00:41,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:41,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:41,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:41,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:41,491 INFO L87 Difference]: Start difference. First operand 33608 states and 60772 transitions. Second operand 5 states. [2020-12-22 06:00:48,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:00:48,094 INFO L93 Difference]: Finished difference Result 93503 states and 168848 transitions. [2020-12-22 06:00:48,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:00:48,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-12-22 06:00:48,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:00:48,170 INFO L225 Difference]: With dead ends: 93503 [2020-12-22 06:00:48,171 INFO L226 Difference]: Without dead ends: 59961 [2020-12-22 06:00:48,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 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 06:00:48,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59961 states. [2020-12-22 06:00:51,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59961 to 43696. [2020-12-22 06:00:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43696 states. [2020-12-22 06:00:51,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43696 states to 43696 states and 79606 transitions. [2020-12-22 06:00:51,689 INFO L78 Accepts]: Start accepts. Automaton has 43696 states and 79606 transitions. Word has length 139 [2020-12-22 06:00:51,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:00:51,689 INFO L481 AbstractCegarLoop]: Abstraction has 43696 states and 79606 transitions. [2020-12-22 06:00:51,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:00:51,689 INFO L276 IsEmpty]: Start isEmpty. Operand 43696 states and 79606 transitions. [2020-12-22 06:00:51,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-22 06:00:51,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:00:51,698 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:00:51,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-12-22 06:00:51,698 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:00:51,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:00:51,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1367598740, now seen corresponding path program 1 times [2020-12-22 06:00:51,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:00:51,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866115676] [2020-12-22 06:00:51,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:00:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:00:51,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:00:51,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866115676] [2020-12-22 06:00:51,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:00:51,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:00:51,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731146235] [2020-12-22 06:00:51,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:00:51,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:00:51,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:00:51,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:00:51,784 INFO L87 Difference]: Start difference. First operand 43696 states and 79606 transitions. Second operand 5 states. [2020-12-22 06:01:00,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:00,728 INFO L93 Difference]: Finished difference Result 126689 states and 229691 transitions. [2020-12-22 06:01:00,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:01:00,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-12-22 06:01:00,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:00,922 INFO L225 Difference]: With dead ends: 126689 [2020-12-22 06:01:00,922 INFO L226 Difference]: Without dead ends: 83059 [2020-12-22 06:01:00,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 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 06:01:01,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83059 states. [2020-12-22 06:01:04,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83059 to 50280. [2020-12-22 06:01:04,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50280 states. [2020-12-22 06:01:05,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50280 states to 50280 states and 91923 transitions. [2020-12-22 06:01:05,062 INFO L78 Accepts]: Start accepts. Automaton has 50280 states and 91923 transitions. Word has length 140 [2020-12-22 06:01:05,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:05,063 INFO L481 AbstractCegarLoop]: Abstraction has 50280 states and 91923 transitions. [2020-12-22 06:01:05,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:05,063 INFO L276 IsEmpty]: Start isEmpty. Operand 50280 states and 91923 transitions. [2020-12-22 06:01:05,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-22 06:01:05,071 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:05,071 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:05,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-12-22 06:01:05,072 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:05,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:05,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1143166836, now seen corresponding path program 1 times [2020-12-22 06:01:05,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:05,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099539363] [2020-12-22 06:01:05,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:05,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:05,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099539363] [2020-12-22 06:01:05,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:05,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:05,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580461234] [2020-12-22 06:01:05,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:05,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:05,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:05,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:05,154 INFO L87 Difference]: Start difference. First operand 50280 states and 91923 transitions. Second operand 5 states. [2020-12-22 06:01:15,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:15,030 INFO L93 Difference]: Finished difference Result 146257 states and 266396 transitions. [2020-12-22 06:01:15,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:01:15,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-12-22 06:01:15,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:15,182 INFO L225 Difference]: With dead ends: 146257 [2020-12-22 06:01:15,182 INFO L226 Difference]: Without dead ends: 96043 [2020-12-22 06:01:15,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 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 06:01:15,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96043 states. [2020-12-22 06:01:19,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96043 to 56872. [2020-12-22 06:01:19,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56872 states. [2020-12-22 06:01:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56872 states to 56872 states and 104216 transitions. [2020-12-22 06:01:20,049 INFO L78 Accepts]: Start accepts. Automaton has 56872 states and 104216 transitions. Word has length 141 [2020-12-22 06:01:20,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:20,049 INFO L481 AbstractCegarLoop]: Abstraction has 56872 states and 104216 transitions. [2020-12-22 06:01:20,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:20,050 INFO L276 IsEmpty]: Start isEmpty. Operand 56872 states and 104216 transitions. [2020-12-22 06:01:20,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 06:01:20,058 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:20,058 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:20,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-12-22 06:01:20,058 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:20,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:20,059 INFO L82 PathProgramCache]: Analyzing trace with hash -660961679, now seen corresponding path program 1 times [2020-12-22 06:01:20,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:20,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536144897] [2020-12-22 06:01:20,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:20,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:20,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536144897] [2020-12-22 06:01:20,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:20,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:01:20,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272503089] [2020-12-22 06:01:20,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:01:20,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:20,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:01:20,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:01:20,144 INFO L87 Difference]: Start difference. First operand 56872 states and 104216 transitions. Second operand 5 states. [2020-12-22 06:01:29,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:29,412 INFO L93 Difference]: Finished difference Result 139227 states and 253385 transitions. [2020-12-22 06:01:29,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:01:29,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-12-22 06:01:29,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:29,562 INFO L225 Difference]: With dead ends: 139227 [2020-12-22 06:01:29,562 INFO L226 Difference]: Without dead ends: 82421 [2020-12-22 06:01:29,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 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 06:01:29,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82421 states. [2020-12-22 06:01:33,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82421 to 40546. [2020-12-22 06:01:33,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40546 states. [2020-12-22 06:01:33,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40546 states to 40546 states and 73731 transitions. [2020-12-22 06:01:33,676 INFO L78 Accepts]: Start accepts. Automaton has 40546 states and 73731 transitions. Word has length 142 [2020-12-22 06:01:33,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:33,676 INFO L481 AbstractCegarLoop]: Abstraction has 40546 states and 73731 transitions. [2020-12-22 06:01:33,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:01:33,676 INFO L276 IsEmpty]: Start isEmpty. Operand 40546 states and 73731 transitions. [2020-12-22 06:01:33,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 06:01:33,679 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:33,680 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:33,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-12-22 06:01:33,680 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:33,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:33,680 INFO L82 PathProgramCache]: Analyzing trace with hash -733348237, now seen corresponding path program 1 times [2020-12-22 06:01:33,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:33,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226513129] [2020-12-22 06:01:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:33,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:33,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226513129] [2020-12-22 06:01:33,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:33,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:01:33,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917668680] [2020-12-22 06:01:33,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:33,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:33,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:33,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:33,780 INFO L87 Difference]: Start difference. First operand 40546 states and 73731 transitions. Second operand 4 states. [2020-12-22 06:01:39,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:39,223 INFO L93 Difference]: Finished difference Result 99864 states and 182165 transitions. [2020-12-22 06:01:39,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:01:39,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-12-22 06:01:39,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:39,308 INFO L225 Difference]: With dead ends: 99864 [2020-12-22 06:01:39,308 INFO L226 Difference]: Without dead ends: 59739 [2020-12-22 06:01:39,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:39,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59739 states. [2020-12-22 06:01:44,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59739 to 59446. [2020-12-22 06:01:44,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59446 states. [2020-12-22 06:01:44,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59446 states to 59446 states and 108070 transitions. [2020-12-22 06:01:44,737 INFO L78 Accepts]: Start accepts. Automaton has 59446 states and 108070 transitions. Word has length 142 [2020-12-22 06:01:44,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:44,737 INFO L481 AbstractCegarLoop]: Abstraction has 59446 states and 108070 transitions. [2020-12-22 06:01:44,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:01:44,737 INFO L276 IsEmpty]: Start isEmpty. Operand 59446 states and 108070 transitions. [2020-12-22 06:01:44,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 06:01:44,741 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:44,741 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:44,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-12-22 06:01:44,741 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:44,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:44,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1001730300, now seen corresponding path program 1 times [2020-12-22 06:01:44,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:44,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259713075] [2020-12-22 06:01:44,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:44,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:44,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259713075] [2020-12-22 06:01:44,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:44,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:01:44,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339046180] [2020-12-22 06:01:44,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:01:44,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:44,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:01:44,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:01:44,854 INFO L87 Difference]: Start difference. First operand 59446 states and 108070 transitions. Second operand 6 states. [2020-12-22 06:01:53,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:01:53,453 INFO L93 Difference]: Finished difference Result 168376 states and 308370 transitions. [2020-12-22 06:01:53,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:01:53,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2020-12-22 06:01:53,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:01:53,646 INFO L225 Difference]: With dead ends: 168376 [2020-12-22 06:01:53,647 INFO L226 Difference]: Without dead ends: 109351 [2020-12-22 06:01:53,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:01:53,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109351 states. [2020-12-22 06:01:59,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109351 to 57670. [2020-12-22 06:01:59,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57670 states. [2020-12-22 06:01:59,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57670 states to 57670 states and 105138 transitions. [2020-12-22 06:01:59,391 INFO L78 Accepts]: Start accepts. Automaton has 57670 states and 105138 transitions. Word has length 143 [2020-12-22 06:01:59,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:01:59,391 INFO L481 AbstractCegarLoop]: Abstraction has 57670 states and 105138 transitions. [2020-12-22 06:01:59,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:01:59,391 INFO L276 IsEmpty]: Start isEmpty. Operand 57670 states and 105138 transitions. [2020-12-22 06:01:59,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-22 06:01:59,395 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:01:59,395 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:01:59,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-12-22 06:01:59,395 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:01:59,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:01:59,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1724475040, now seen corresponding path program 1 times [2020-12-22 06:01:59,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:01:59,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802015158] [2020-12-22 06:01:59,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:01:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:01:59,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:01:59,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802015158] [2020-12-22 06:01:59,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:01:59,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:01:59,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311293258] [2020-12-22 06:01:59,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:01:59,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:01:59,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:01:59,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:01:59,493 INFO L87 Difference]: Start difference. First operand 57670 states and 105138 transitions. Second operand 4 states. [2020-12-22 06:02:06,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:06,593 INFO L93 Difference]: Finished difference Result 133536 states and 244035 transitions. [2020-12-22 06:02:06,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:02:06,594 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-12-22 06:02:06,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:06,706 INFO L225 Difference]: With dead ends: 133536 [2020-12-22 06:02:06,706 INFO L226 Difference]: Without dead ends: 76287 [2020-12-22 06:02:06,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:06,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76287 states. [2020-12-22 06:02:13,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76287 to 75962. [2020-12-22 06:02:13,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75962 states. [2020-12-22 06:02:13,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75962 states to 75962 states and 138925 transitions. [2020-12-22 06:02:13,544 INFO L78 Accepts]: Start accepts. Automaton has 75962 states and 138925 transitions. Word has length 144 [2020-12-22 06:02:13,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:13,545 INFO L481 AbstractCegarLoop]: Abstraction has 75962 states and 138925 transitions. [2020-12-22 06:02:13,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:13,545 INFO L276 IsEmpty]: Start isEmpty. Operand 75962 states and 138925 transitions. [2020-12-22 06:02:13,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-12-22 06:02:13,549 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:13,549 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:02:13,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-12-22 06:02:13,550 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:13,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:13,550 INFO L82 PathProgramCache]: Analyzing trace with hash 2000373724, now seen corresponding path program 1 times [2020-12-22 06:02:13,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:13,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959890104] [2020-12-22 06:02:13,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:13,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:13,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959890104] [2020-12-22 06:02:13,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:13,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:02:13,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473890114] [2020-12-22 06:02:13,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:13,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:13,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:13,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:13,640 INFO L87 Difference]: Start difference. First operand 75962 states and 138925 transitions. Second operand 6 states.