/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/nla-digbench-scaling/geo3-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:26:21,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:26:22,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:26:22,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:26:22,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:26:22,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:26:22,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:26:22,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:26:22,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:26:22,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:26:22,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:26:22,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:26:22,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:26:22,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:26:22,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:26:22,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:26:22,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:26:22,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:26:22,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:26:22,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:26:22,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:26:22,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:26:22,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:26:22,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:26:22,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:26:22,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:26:22,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:26:22,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:26:22,141 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:26:22,193 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:26:22,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:26:22,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:26:22,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:26:22,198 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:26:22,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:26:22,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:26:22,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:26:22,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:26:22,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:26:22,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:26:22,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:26:22,201 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:26:22,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:26:22,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:26:22,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:26:22,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:26:22,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:26:22,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:26:22,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:26:22,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:26:22,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:26:22,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:26:22,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:26:22,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:26:22,203 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:26:22,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:26:22,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:26:22,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:26:22,667 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:26:22,668 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:26:22,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound5.c [2020-12-22 05:26:22,749 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/317528427/ec656f5ba52849ed9f43ae18463bb471/FLAGfa9b0a0e7 [2020-12-22 05:26:23,363 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:26:23,363 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound5.c [2020-12-22 05:26:23,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/317528427/ec656f5ba52849ed9f43ae18463bb471/FLAGfa9b0a0e7 [2020-12-22 05:26:23,708 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/317528427/ec656f5ba52849ed9f43ae18463bb471 [2020-12-22 05:26:23,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:26:23,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:26:23,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:26:23,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:26:23,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:26:23,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:26:23" (1/1) ... [2020-12-22 05:26:23,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f17f6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:23, skipping insertion in model container [2020-12-22 05:26:23,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:26:23" (1/1) ... [2020-12-22 05:26:23,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:26:23,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:26:23,939 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/nla-digbench-scaling/geo3-ll_valuebound5.c[525,538] [2020-12-22 05:26:23,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:26:23,966 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:26:23,982 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/nla-digbench-scaling/geo3-ll_valuebound5.c[525,538] [2020-12-22 05:26:23,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:26:24,006 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:26:24,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:24 WrapperNode [2020-12-22 05:26:24,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:26:24,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:26:24,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:26:24,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:26:24,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:24" (1/1) ... [2020-12-22 05:26:24,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:24" (1/1) ... [2020-12-22 05:26:24,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:26:24,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:26:24,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:26:24,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:26:24,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:24" (1/1) ... [2020-12-22 05:26:24,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:24" (1/1) ... [2020-12-22 05:26:24,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:24" (1/1) ... [2020-12-22 05:26:24,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:24" (1/1) ... [2020-12-22 05:26:24,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:24" (1/1) ... [2020-12-22 05:26:24,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:24" (1/1) ... [2020-12-22 05:26:24,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:24" (1/1) ... [2020-12-22 05:26:24,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:26:24,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:26:24,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:26:24,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:26:24,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:24" (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 05:26:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:26:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:26:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:26:24,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:26:24,683 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:26:24,683 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2020-12-22 05:26:24,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:26:24 BoogieIcfgContainer [2020-12-22 05:26:24,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:26:24,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:26:24,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:26:24,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:26:24,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:26:23" (1/3) ... [2020-12-22 05:26:24,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b3057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:26:24, skipping insertion in model container [2020-12-22 05:26:24,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:26:24" (2/3) ... [2020-12-22 05:26:24,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b3057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:26:24, skipping insertion in model container [2020-12-22 05:26:24,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:26:24" (3/3) ... [2020-12-22 05:26:24,703 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_valuebound5.c [2020-12-22 05:26:24,719 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:26:24,725 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 05:26:24,744 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 05:26:24,773 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:26:24,773 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:26:24,774 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:26:24,774 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:26:24,774 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:26:24,774 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:26:24,774 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:26:24,775 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:26:24,789 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-12-22 05:26:24,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:26:24,795 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:24,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:26:24,796 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:24,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:24,803 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-22 05:26:24,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:24,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375206815] [2020-12-22 05:26:24,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:26:24,970 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 05:26:24,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375206815] [2020-12-22 05:26:24,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:26:24,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:26:24,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089562707] [2020-12-22 05:26:24,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:26:24,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:24,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:26:24,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:26:24,997 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-12-22 05:26:25,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:26:25,015 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2020-12-22 05:26:25,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:26:25,017 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-22 05:26:25,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:26:25,025 INFO L225 Difference]: With dead ends: 39 [2020-12-22 05:26:25,026 INFO L226 Difference]: Without dead ends: 17 [2020-12-22 05:26:25,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:26:25,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-22 05:26:25,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-22 05:26:25,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-22 05:26:25,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-12-22 05:26:25,064 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2020-12-22 05:26:25,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:26:25,065 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-12-22 05:26:25,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:26:25,065 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-12-22 05:26:25,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:26:25,066 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:25,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:26:25,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:26:25,066 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:25,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:25,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-22 05:26:25,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:25,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036129058] [2020-12-22 05:26:25,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:25,094 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:26:25,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889311515] [2020-12-22 05:26:25,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:26:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:26:25,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 05:26:25,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:26:25,396 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 05:26:25,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036129058] [2020-12-22 05:26:25,397 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:26:25,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889311515] [2020-12-22 05:26:25,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:26:25,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:26:25,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368959006] [2020-12-22 05:26:25,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:26:25,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:25,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:26:25,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:26:25,401 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 6 states. [2020-12-22 05:26:25,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:26:25,529 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-12-22 05:26:25,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:26:25,530 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-22 05:26:25,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:26:25,531 INFO L225 Difference]: With dead ends: 27 [2020-12-22 05:26:25,531 INFO L226 Difference]: Without dead ends: 21 [2020-12-22 05:26:25,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:26:25,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-22 05:26:25,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-12-22 05:26:25,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-22 05:26:25,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-12-22 05:26:25,538 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 11 [2020-12-22 05:26:25,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:26:25,539 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-12-22 05:26:25,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:26:25,539 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-12-22 05:26:25,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 05:26:25,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:25,540 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:26:25,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:26:25,755 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:25,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:25,757 INFO L82 PathProgramCache]: Analyzing trace with hash -937492348, now seen corresponding path program 1 times [2020-12-22 05:26:25,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:25,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219011655] [2020-12-22 05:26:25,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:25,780 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:26:25,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [449330299] [2020-12-22 05:26:25,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:26:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:26:25,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-22 05:26:25,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:26:26,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:26:26,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219011655] [2020-12-22 05:26:26,071 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:26:26,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449330299] [2020-12-22 05:26:26,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:26:26,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:26:26,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756147668] [2020-12-22 05:26:26,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:26:26,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:26:26,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:26:26,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:26:26,074 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 8 states. [2020-12-22 05:26:26,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:26:26,374 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-12-22 05:26:26,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:26:26,377 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-12-22 05:26:26,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:26:26,378 INFO L225 Difference]: With dead ends: 30 [2020-12-22 05:26:26,379 INFO L226 Difference]: Without dead ends: 24 [2020-12-22 05:26:26,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:26:26,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-22 05:26:26,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-12-22 05:26:26,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-22 05:26:26,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-12-22 05:26:26,387 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 14 [2020-12-22 05:26:26,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:26:26,387 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-12-22 05:26:26,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:26:26,387 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-12-22 05:26:26,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 05:26:26,388 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:26:26,388 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:26:26,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:26:26,603 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:26:26,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:26:26,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1342734009, now seen corresponding path program 2 times [2020-12-22 05:26:26,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:26:26,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747577784] [2020-12-22 05:26:26,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:26:26,635 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:26:26,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163391185] [2020-12-22 05:26:26,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:26:26,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:26:26,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:26:26,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-22 05:26:26,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:26:48,262 WARN L197 SmtUtils]: Spent 20.28 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-22 05:26:54,325 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 16 [2020-12-22 05:26:58,412 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 15 [2020-12-22 05:27:00,472 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:27:00,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747577784] [2020-12-22 05:27:00,472 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:00,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163391185] [2020-12-22 05:27:00,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:27:00,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:27:00,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302322362] [2020-12-22 05:27:00,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:27:00,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:00,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:27:00,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=49, Unknown=4, NotChecked=0, Total=72 [2020-12-22 05:27:00,476 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 9 states. [2020-12-22 05:27:18,922 WARN L197 SmtUtils]: Spent 6.18 s on a formula simplification. DAG size of input: 25 DAG size of output: 19 [2020-12-22 05:27:20,974 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 18 [2020-12-22 05:27:23,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:23,054 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2020-12-22 05:27:23,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:27:23,055 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-12-22 05:27:23,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:23,056 INFO L225 Difference]: With dead ends: 30 [2020-12-22 05:27:23,056 INFO L226 Difference]: Without dead ends: 28 [2020-12-22 05:27:23,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 47.9s TimeCoverageRelationStatistics Valid=34, Invalid=91, Unknown=7, NotChecked=0, Total=132 [2020-12-22 05:27:23,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-22 05:27:23,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2020-12-22 05:27:23,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-22 05:27:23,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-12-22 05:27:23,064 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 17 [2020-12-22 05:27:23,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:23,064 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-12-22 05:27:23,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:27:23,064 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-12-22 05:27:23,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 05:27:23,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:23,066 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:23,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:23,268 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:27:23,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:23,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1931626151, now seen corresponding path program 1 times [2020-12-22 05:27:23,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:23,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278228360] [2020-12-22 05:27:23,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:23,292 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:23,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839621603] [2020-12-22 05:27:23,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:27:23,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:27:23,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:23,425 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 05:27:23,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278228360] [2020-12-22 05:27:23,426 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:27:23,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839621603] [2020-12-22 05:27:23,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:27:23,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:27:23,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109182682] [2020-12-22 05:27:23,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:27:23,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:27:23,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:27:23,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:27:23,428 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 5 states. [2020-12-22 05:27:27,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:27:27,526 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-12-22 05:27:27,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:27:27,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-22 05:27:27,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:27:27,528 INFO L225 Difference]: With dead ends: 25 [2020-12-22 05:27:27,528 INFO L226 Difference]: Without dead ends: 21 [2020-12-22 05:27:27,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:27:27,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-22 05:27:27,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-22 05:27:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-22 05:27:27,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-12-22 05:27:27,535 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 20 [2020-12-22 05:27:27,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:27:27,535 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-12-22 05:27:27,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:27:27,536 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-12-22 05:27:27,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 05:27:27,536 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:27:27,537 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:27:27,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:27,740 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:27:27,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:27:27,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1931585436, now seen corresponding path program 3 times [2020-12-22 05:27:27,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:27:27,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195539674] [2020-12-22 05:27:27,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:27:27,756 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:27:27,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21258998] [2020-12-22 05:27:27,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:27:30,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 05:27:30,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:27:30,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-22 05:27:30,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:27:31,166 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2020-12-22 05:27:31,477 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-12-22 05:27:47,838 WARN L197 SmtUtils]: Spent 16.27 s on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-12-22 05:27:57,679 WARN L197 SmtUtils]: Spent 8.42 s on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-12-22 05:27:57,709 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:27:57,720 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:27:57,731 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:27:57,738 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:27:57,767 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:27:57,776 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:27:57,783 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:27:57,789 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:27:57,819 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:27:57,831 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:27:57,857 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:27:57,869 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:27:57,884 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:27:57,891 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:27:57,908 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 05:27:57,942 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:27:57,949 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:27:57,954 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:27:57,958 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:27:57,973 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:27:57,979 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:27:57,984 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:27:57,989 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 05:27:58,010 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:27:58,019 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:27:58,025 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:27:58,032 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:27:58,037 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 05:27:58,053 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:27:58,058 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:27:58,062 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-22 05:27:58,082 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-12-22 05:28:00,138 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:28:04,334 WARN L838 $PredicateComparison]: unable to prove that (or (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) (and (exists ((ULTIMATE.start_main_~a~0 Int) (ULTIMATE.start_main_~z~0 Int) (ULTIMATE.start_main_~x~0 Int) (ULTIMATE.start_main_~y~0 Int)) (let ((.cse1 (* ULTIMATE.start_main_~a~0 (- 1)))) (let ((.cse3 (+ .cse1 ULTIMATE.start_main_~x~0))) (let ((.cse0 (div .cse3 ULTIMATE.start_main_~z~0)) (.cse2 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0))) (and (<= 0 ULTIMATE.start_main_~z~0) (not (= (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~a~0))) (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod (+ .cse0 .cse1) ULTIMATE.start_main_~z~0) 0) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0) (not (= ULTIMATE.start_main_~z~0 0)) (<= 0 ULTIMATE.start_main_~a~0) (= (+ (* .cse0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~a~0) (+ .cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0 .cse2))) (<= ULTIMATE.start_main_~z~0 5) (<= ULTIMATE.start_main_~a~0 5) (= (mod .cse3 ULTIMATE.start_main_~z~0) 0)))))) (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond))) is different from false [2020-12-22 05:28:10,557 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 Int) (ULTIMATE.start_main_~z~0 Int) (ULTIMATE.start_main_~x~0 Int) (ULTIMATE.start_main_~y~0 Int)) (let ((.cse1 (* ULTIMATE.start_main_~a~0 (- 1)))) (let ((.cse3 (+ .cse1 ULTIMATE.start_main_~x~0))) (let ((.cse0 (div .cse3 ULTIMATE.start_main_~z~0)) (.cse2 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0))) (and (<= 0 ULTIMATE.start_main_~z~0) (not (= (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~a~0))) (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod (+ .cse0 .cse1) ULTIMATE.start_main_~z~0) 0) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0) (not (= ULTIMATE.start_main_~z~0 0)) (<= 0 ULTIMATE.start_main_~a~0) (= (+ (* .cse0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~a~0) (+ .cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0 .cse2))) (<= ULTIMATE.start_main_~z~0 5) (<= ULTIMATE.start_main_~a~0 5) (= (mod .cse3 ULTIMATE.start_main_~z~0) 0)))))) is different from false [2020-12-22 05:28:12,564 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 Int) (ULTIMATE.start_main_~z~0 Int) (ULTIMATE.start_main_~x~0 Int) (ULTIMATE.start_main_~y~0 Int)) (let ((.cse1 (* ULTIMATE.start_main_~a~0 (- 1)))) (let ((.cse3 (+ .cse1 ULTIMATE.start_main_~x~0))) (let ((.cse0 (div .cse3 ULTIMATE.start_main_~z~0)) (.cse2 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0))) (and (<= 0 ULTIMATE.start_main_~z~0) (not (= (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~a~0))) (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod (+ .cse0 .cse1) ULTIMATE.start_main_~z~0) 0) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0) (not (= ULTIMATE.start_main_~z~0 0)) (<= 0 ULTIMATE.start_main_~a~0) (= (+ (* .cse0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~a~0) (+ .cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0 .cse2))) (<= ULTIMATE.start_main_~z~0 5) (<= ULTIMATE.start_main_~a~0 5) (= (mod .cse3 ULTIMATE.start_main_~z~0) 0)))))) is different from true [2020-12-22 05:28:12,568 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2020-12-22 05:28:12,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195539674] [2020-12-22 05:28:12,568 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:28:12,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21258998] [2020-12-22 05:28:12,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:28:12,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-22 05:28:12,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180156619] [2020-12-22 05:28:12,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 05:28:12,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:28:12,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 05:28:12,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=110, Unknown=3, NotChecked=46, Total=210 [2020-12-22 05:28:12,571 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 15 states. [2020-12-22 05:28:28,022 WARN L197 SmtUtils]: Spent 14.42 s on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-12-22 05:28:42,839 WARN L197 SmtUtils]: Spent 4.44 s on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 05:30:33,355 WARN L197 SmtUtils]: Spent 1.59 m on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-12-22 05:31:04,617 WARN L197 SmtUtils]: Spent 27.16 s on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-12-22 05:31:08,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:31:08,703 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-12-22 05:31:08,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:31:08,717 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 20 [2020-12-22 05:31:08,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:31:08,717 INFO L225 Difference]: With dead ends: 21 [2020-12-22 05:31:08,717 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 05:31:08,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 196.0s TimeCoverageRelationStatistics Valid=107, Invalid=268, Unknown=13, NotChecked=74, Total=462 [2020-12-22 05:31:08,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 05:31:08,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 05:31:08,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 05:31:08,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 05:31:08,721 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-12-22 05:31:08,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:31:08,721 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 05:31:08,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 05:31:08,721 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 05:31:08,722 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 05:31:08,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 05:31:08,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.