/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/systemc/mem_slave_tlm.4.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:05:55,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:05:55,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:05:55,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 07:05:55,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 07:05:55,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 07:05:55,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 07:05:55,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 07:05:55,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 07:05:55,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 07:05:55,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 07:05:55,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-12-22 07:05:55,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:05:55,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:05:55,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:05:55,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:05:55,789 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:05:55,789 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:05:55,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:05:55,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:05:55,794 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:05:55,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:05:55,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:05:55,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:05:55,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:05:55,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:05:55,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:05:55,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:05:55,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:05:55,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:05:55,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:05:55,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:05:55,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:05:55,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:05:55,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:05:55,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:05:55,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:05:55,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:05:55,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:05:55,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:05:55,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:05:55,800 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:05:56,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:05:56,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:05:56,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:05:56,296 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:05:56,297 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:05:56,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/mem_slave_tlm.4.cil.c [2020-12-22 07:05:56,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7a51353c/023428488b8e405a89fb0e2d86441509/FLAG26fd1bc82 [2020-12-22 07:05:57,156 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:05:57,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/mem_slave_tlm.4.cil.c [2020-12-22 07:05:57,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7a51353c/023428488b8e405a89fb0e2d86441509/FLAG26fd1bc82 [2020-12-22 07:05:57,402 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7a51353c/023428488b8e405a89fb0e2d86441509 [2020-12-22 07:05:57,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:05:57,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:05:57,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:05:57,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:05:57,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:05:57,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:05:57" (1/1) ... [2020-12-22 07:05:57,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@560568f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:57, skipping insertion in model container [2020-12-22 07:05:57,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:05:57" (1/1) ... [2020-12-22 07:05:57,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:05:57,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:05:57,659 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/systemc/mem_slave_tlm.4.cil.c[341,354] [2020-12-22 07:05:57,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:05:57,826 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:05:57,845 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/systemc/mem_slave_tlm.4.cil.c[341,354] [2020-12-22 07:05:57,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:05:57,989 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:05:57,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:57 WrapperNode [2020-12-22 07:05:57,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:05:57,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:05:57,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:05:57,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:05:58,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:57" (1/1) ... [2020-12-22 07:05:58,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:57" (1/1) ... [2020-12-22 07:05:58,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:05:58,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:05:58,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:05:58,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:05:58,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:57" (1/1) ... [2020-12-22 07:05:58,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:57" (1/1) ... [2020-12-22 07:05:58,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:57" (1/1) ... [2020-12-22 07:05:58,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:57" (1/1) ... [2020-12-22 07:05:58,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:57" (1/1) ... [2020-12-22 07:05:58,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:57" (1/1) ... [2020-12-22 07:05:58,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:57" (1/1) ... [2020-12-22 07:05:58,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:05:58,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:05:58,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:05:58,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:05:58,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:57" (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 07:05:58,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:05:58,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:05:58,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:05:58,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:05:59,588 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:05:59,588 INFO L299 CfgBuilder]: Removed 39 assume(true) statements. [2020-12-22 07:05:59,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:05:59 BoogieIcfgContainer [2020-12-22 07:05:59,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:05:59,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:05:59,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:05:59,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:05:59,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:05:57" (1/3) ... [2020-12-22 07:05:59,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d2c9d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:05:59, skipping insertion in model container [2020-12-22 07:05:59,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:05:57" (2/3) ... [2020-12-22 07:05:59,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d2c9d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:05:59, skipping insertion in model container [2020-12-22 07:05:59,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:05:59" (3/3) ... [2020-12-22 07:05:59,608 INFO L111 eAbstractionObserver]: Analyzing ICFG mem_slave_tlm.4.cil.c [2020-12-22 07:05:59,615 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:05:59,622 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 07:05:59,642 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 07:05:59,698 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:05:59,698 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:05:59,698 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:05:59,698 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:05:59,699 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:05:59,699 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:05:59,699 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:05:59,699 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:05:59,723 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states. [2020-12-22 07:05:59,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-22 07:05:59,764 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:05:59,764 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] [2020-12-22 07:05:59,766 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 07:05:59,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:05:59,774 INFO L82 PathProgramCache]: Analyzing trace with hash -963603713, now seen corresponding path program 1 times [2020-12-22 07:05:59,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:05:59,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893177087] [2020-12-22 07:05:59,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:05:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:05:59,998 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 07:05:59,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893177087] [2020-12-22 07:06:00,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:00,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:06:00,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055198304] [2020-12-22 07:06:00,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:00,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:00,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:00,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:06:00,025 INFO L87 Difference]: Start difference. First operand 276 states. Second operand 3 states. [2020-12-22 07:06:00,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:00,412 INFO L93 Difference]: Finished difference Result 731 states and 1328 transitions. [2020-12-22 07:06:00,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:00,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-22 07:06:00,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:00,434 INFO L225 Difference]: With dead ends: 731 [2020-12-22 07:06:00,435 INFO L226 Difference]: Without dead ends: 452 [2020-12-22 07:06:00,440 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 07:06:00,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-12-22 07:06:00,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 436. [2020-12-22 07:06:00,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-12-22 07:06:00,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 690 transitions. [2020-12-22 07:06:00,526 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 690 transitions. Word has length 28 [2020-12-22 07:06:00,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:00,526 INFO L481 AbstractCegarLoop]: Abstraction has 436 states and 690 transitions. [2020-12-22 07:06:00,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:00,527 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 690 transitions. [2020-12-22 07:06:00,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 07:06:00,530 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:00,530 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] [2020-12-22 07:06:00,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:06:00,531 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 07:06:00,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:00,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1067368876, now seen corresponding path program 1 times [2020-12-22 07:06:00,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:00,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666036489] [2020-12-22 07:06:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:00,626 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 07:06:00,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666036489] [2020-12-22 07:06:00,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:00,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:06:00,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913862038] [2020-12-22 07:06:00,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:00,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:00,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:00,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:06:00,632 INFO L87 Difference]: Start difference. First operand 436 states and 690 transitions. Second operand 3 states. [2020-12-22 07:06:00,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:00,839 INFO L93 Difference]: Finished difference Result 1147 states and 1839 transitions. [2020-12-22 07:06:00,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:00,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-22 07:06:00,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:00,846 INFO L225 Difference]: With dead ends: 1147 [2020-12-22 07:06:00,846 INFO L226 Difference]: Without dead ends: 725 [2020-12-22 07:06:00,850 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 07:06:00,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2020-12-22 07:06:00,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 709. [2020-12-22 07:06:00,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-12-22 07:06:00,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1153 transitions. [2020-12-22 07:06:00,903 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1153 transitions. Word has length 39 [2020-12-22 07:06:00,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:00,904 INFO L481 AbstractCegarLoop]: Abstraction has 709 states and 1153 transitions. [2020-12-22 07:06:00,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:00,904 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1153 transitions. [2020-12-22 07:06:00,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 07:06:00,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:00,908 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] [2020-12-22 07:06:00,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:06:00,909 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 07:06:00,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:00,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1759790175, now seen corresponding path program 1 times [2020-12-22 07:06:00,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:00,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401421054] [2020-12-22 07:06:00,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:01,037 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 07:06:01,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401421054] [2020-12-22 07:06:01,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:01,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:06:01,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001449170] [2020-12-22 07:06:01,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:01,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:01,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:01,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:06:01,047 INFO L87 Difference]: Start difference. First operand 709 states and 1153 transitions. Second operand 3 states. [2020-12-22 07:06:01,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:01,147 INFO L93 Difference]: Finished difference Result 1779 states and 2892 transitions. [2020-12-22 07:06:01,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:01,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-12-22 07:06:01,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:01,155 INFO L225 Difference]: With dead ends: 1779 [2020-12-22 07:06:01,155 INFO L226 Difference]: Without dead ends: 1095 [2020-12-22 07:06:01,157 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 07:06:01,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2020-12-22 07:06:01,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1083. [2020-12-22 07:06:01,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1083 states. [2020-12-22 07:06:01,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1756 transitions. [2020-12-22 07:06:01,199 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1756 transitions. Word has length 40 [2020-12-22 07:06:01,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:01,200 INFO L481 AbstractCegarLoop]: Abstraction has 1083 states and 1756 transitions. [2020-12-22 07:06:01,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:01,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1756 transitions. [2020-12-22 07:06:01,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 07:06:01,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:01,203 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:06:01,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:06:01,203 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 07:06:01,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:01,204 INFO L82 PathProgramCache]: Analyzing trace with hash -361630758, now seen corresponding path program 1 times [2020-12-22 07:06:01,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:01,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318659596] [2020-12-22 07:06:01,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:01,272 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:06:01,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318659596] [2020-12-22 07:06:01,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:01,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:06:01,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749234002] [2020-12-22 07:06:01,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:06:01,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:01,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:06:01,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:06:01,275 INFO L87 Difference]: Start difference. First operand 1083 states and 1756 transitions. Second operand 4 states. [2020-12-22 07:06:01,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:01,793 INFO L93 Difference]: Finished difference Result 2981 states and 4817 transitions. [2020-12-22 07:06:01,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:06:01,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-12-22 07:06:01,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:01,805 INFO L225 Difference]: With dead ends: 2981 [2020-12-22 07:06:01,806 INFO L226 Difference]: Without dead ends: 1923 [2020-12-22 07:06:01,808 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 07:06:01,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2020-12-22 07:06:01,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1693. [2020-12-22 07:06:01,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1693 states. [2020-12-22 07:06:01,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2712 transitions. [2020-12-22 07:06:01,877 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2712 transitions. Word has length 46 [2020-12-22 07:06:01,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:01,878 INFO L481 AbstractCegarLoop]: Abstraction has 1693 states and 2712 transitions. [2020-12-22 07:06:01,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:06:01,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2712 transitions. [2020-12-22 07:06:01,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 07:06:01,879 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:01,880 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] [2020-12-22 07:06:01,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:06:01,880 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 07:06:01,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:01,881 INFO L82 PathProgramCache]: Analyzing trace with hash 796224946, now seen corresponding path program 1 times [2020-12-22 07:06:01,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:01,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7021861] [2020-12-22 07:06:01,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:01,966 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 07:06:01,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7021861] [2020-12-22 07:06:01,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:01,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:06:01,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639695992] [2020-12-22 07:06:01,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:06:01,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:01,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:06:01,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:06:01,971 INFO L87 Difference]: Start difference. First operand 1693 states and 2712 transitions. Second operand 4 states. [2020-12-22 07:06:02,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:02,581 INFO L93 Difference]: Finished difference Result 5041 states and 7972 transitions. [2020-12-22 07:06:02,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:06:02,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 07:06:02,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:02,601 INFO L225 Difference]: With dead ends: 5041 [2020-12-22 07:06:02,601 INFO L226 Difference]: Without dead ends: 3367 [2020-12-22 07:06:02,605 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 07:06:02,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2020-12-22 07:06:02,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 2985. [2020-12-22 07:06:02,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2985 states. [2020-12-22 07:06:02,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 4711 transitions. [2020-12-22 07:06:02,770 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 4711 transitions. Word has length 52 [2020-12-22 07:06:02,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:02,770 INFO L481 AbstractCegarLoop]: Abstraction has 2985 states and 4711 transitions. [2020-12-22 07:06:02,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:06:02,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 4711 transitions. [2020-12-22 07:06:02,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 07:06:02,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:02,773 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] [2020-12-22 07:06:02,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:06:02,774 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 07:06:02,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:02,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1351345783, now seen corresponding path program 1 times [2020-12-22 07:06:02,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:02,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967480528] [2020-12-22 07:06:02,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:02,880 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 07:06:02,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967480528] [2020-12-22 07:06:02,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:02,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:06:02,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48314429] [2020-12-22 07:06:02,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:02,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:02,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:02,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:06:02,885 INFO L87 Difference]: Start difference. First operand 2985 states and 4711 transitions. Second operand 3 states. [2020-12-22 07:06:03,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:03,078 INFO L93 Difference]: Finished difference Result 7023 states and 11042 transitions. [2020-12-22 07:06:03,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:03,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-22 07:06:03,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:03,099 INFO L225 Difference]: With dead ends: 7023 [2020-12-22 07:06:03,099 INFO L226 Difference]: Without dead ends: 4061 [2020-12-22 07:06:03,105 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 07:06:03,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4061 states. [2020-12-22 07:06:03,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4061 to 3877. [2020-12-22 07:06:03,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3877 states. [2020-12-22 07:06:03,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3877 states to 3877 states and 6045 transitions. [2020-12-22 07:06:03,332 INFO L78 Accepts]: Start accepts. Automaton has 3877 states and 6045 transitions. Word has length 52 [2020-12-22 07:06:03,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:03,333 INFO L481 AbstractCegarLoop]: Abstraction has 3877 states and 6045 transitions. [2020-12-22 07:06:03,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:03,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3877 states and 6045 transitions. [2020-12-22 07:06:03,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 07:06:03,336 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:03,336 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 07:06:03,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:06:03,337 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 07:06:03,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:03,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1227642575, now seen corresponding path program 1 times [2020-12-22 07:06:03,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:03,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509294692] [2020-12-22 07:06:03,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:03,434 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 07:06:03,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509294692] [2020-12-22 07:06:03,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:03,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:06:03,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068403133] [2020-12-22 07:06:03,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:03,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:03,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:03,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:06:03,440 INFO L87 Difference]: Start difference. First operand 3877 states and 6045 transitions. Second operand 3 states. [2020-12-22 07:06:03,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:03,974 INFO L93 Difference]: Finished difference Result 9323 states and 14657 transitions. [2020-12-22 07:06:03,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:03,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-22 07:06:03,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:04,001 INFO L225 Difference]: With dead ends: 9323 [2020-12-22 07:06:04,001 INFO L226 Difference]: Without dead ends: 5469 [2020-12-22 07:06:04,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:06:04,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5469 states. [2020-12-22 07:06:04,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5469 to 4695. [2020-12-22 07:06:04,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4695 states. [2020-12-22 07:06:04,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4695 states to 4695 states and 7058 transitions. [2020-12-22 07:06:04,213 INFO L78 Accepts]: Start accepts. Automaton has 4695 states and 7058 transitions. Word has length 59 [2020-12-22 07:06:04,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:04,213 INFO L481 AbstractCegarLoop]: Abstraction has 4695 states and 7058 transitions. [2020-12-22 07:06:04,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:04,214 INFO L276 IsEmpty]: Start isEmpty. Operand 4695 states and 7058 transitions. [2020-12-22 07:06:04,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 07:06:04,216 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:04,216 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 07:06:04,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:06:04,217 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 07:06:04,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:04,217 INFO L82 PathProgramCache]: Analyzing trace with hash -758236603, now seen corresponding path program 1 times [2020-12-22 07:06:04,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:04,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478854527] [2020-12-22 07:06:04,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:04,264 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 07:06:04,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478854527] [2020-12-22 07:06:04,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:04,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:06:04,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220630790] [2020-12-22 07:06:04,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:04,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:04,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:04,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:06:04,268 INFO L87 Difference]: Start difference. First operand 4695 states and 7058 transitions. Second operand 3 states. [2020-12-22 07:06:04,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:04,490 INFO L93 Difference]: Finished difference Result 9233 states and 13893 transitions. [2020-12-22 07:06:04,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:04,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 07:06:04,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:04,515 INFO L225 Difference]: With dead ends: 9233 [2020-12-22 07:06:04,515 INFO L226 Difference]: Without dead ends: 4561 [2020-12-22 07:06:04,522 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 07:06:04,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4561 states. [2020-12-22 07:06:04,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4561 to 4561. [2020-12-22 07:06:04,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4561 states. [2020-12-22 07:06:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4561 states to 4561 states and 6757 transitions. [2020-12-22 07:06:04,718 INFO L78 Accepts]: Start accepts. Automaton has 4561 states and 6757 transitions. Word has length 61 [2020-12-22 07:06:04,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:04,719 INFO L481 AbstractCegarLoop]: Abstraction has 4561 states and 6757 transitions. [2020-12-22 07:06:04,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:04,719 INFO L276 IsEmpty]: Start isEmpty. Operand 4561 states and 6757 transitions. [2020-12-22 07:06:04,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 07:06:04,722 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:04,722 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 07:06:04,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:06:04,722 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 07:06:04,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:04,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1625860633, now seen corresponding path program 1 times [2020-12-22 07:06:04,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:04,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640447804] [2020-12-22 07:06:04,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:04,801 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 07:06:04,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640447804] [2020-12-22 07:06:04,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:04,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:06:04,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819828906] [2020-12-22 07:06:04,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:04,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:04,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:04,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:06:04,808 INFO L87 Difference]: Start difference. First operand 4561 states and 6757 transitions. Second operand 3 states. [2020-12-22 07:06:05,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:05,032 INFO L93 Difference]: Finished difference Result 9769 states and 14632 transitions. [2020-12-22 07:06:05,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:05,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-22 07:06:05,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:05,060 INFO L225 Difference]: With dead ends: 9769 [2020-12-22 07:06:05,060 INFO L226 Difference]: Without dead ends: 5231 [2020-12-22 07:06:05,068 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 07:06:05,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5231 states. [2020-12-22 07:06:05,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5231 to 3507. [2020-12-22 07:06:05,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3507 states. [2020-12-22 07:06:05,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 5247 transitions. [2020-12-22 07:06:05,285 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 5247 transitions. Word has length 62 [2020-12-22 07:06:05,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:05,286 INFO L481 AbstractCegarLoop]: Abstraction has 3507 states and 5247 transitions. [2020-12-22 07:06:05,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:05,286 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 5247 transitions. [2020-12-22 07:06:05,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 07:06:05,288 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:05,288 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 07:06:05,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:06:05,289 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 07:06:05,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:05,289 INFO L82 PathProgramCache]: Analyzing trace with hash 66248594, now seen corresponding path program 1 times [2020-12-22 07:06:05,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:05,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227709575] [2020-12-22 07:06:05,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:05,354 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 07:06:05,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227709575] [2020-12-22 07:06:05,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:05,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:06:05,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371234009] [2020-12-22 07:06:05,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:06:05,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:05,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:06:05,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:06:05,357 INFO L87 Difference]: Start difference. First operand 3507 states and 5247 transitions. Second operand 6 states. [2020-12-22 07:06:06,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:06,616 INFO L93 Difference]: Finished difference Result 16565 states and 24575 transitions. [2020-12-22 07:06:06,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 07:06:06,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-12-22 07:06:06,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:06,669 INFO L225 Difference]: With dead ends: 16565 [2020-12-22 07:06:06,670 INFO L226 Difference]: Without dead ends: 13277 [2020-12-22 07:06:06,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:06:06,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13277 states. [2020-12-22 07:06:06,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13277 to 4373. [2020-12-22 07:06:06,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4373 states. [2020-12-22 07:06:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4373 states to 4373 states and 6505 transitions. [2020-12-22 07:06:06,989 INFO L78 Accepts]: Start accepts. Automaton has 4373 states and 6505 transitions. Word has length 64 [2020-12-22 07:06:06,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:06,989 INFO L481 AbstractCegarLoop]: Abstraction has 4373 states and 6505 transitions. [2020-12-22 07:06:06,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:06:06,990 INFO L276 IsEmpty]: Start isEmpty. Operand 4373 states and 6505 transitions. [2020-12-22 07:06:06,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 07:06:06,991 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:06,992 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] [2020-12-22 07:06:06,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:06:06,992 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 07:06:06,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:06,993 INFO L82 PathProgramCache]: Analyzing trace with hash -557616202, now seen corresponding path program 1 times [2020-12-22 07:06:06,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:06,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708685700] [2020-12-22 07:06:06,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:06:07,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708685700] [2020-12-22 07:06:07,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:07,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:06:07,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911058401] [2020-12-22 07:06:07,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:06:07,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:07,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:06:07,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:06:07,093 INFO L87 Difference]: Start difference. First operand 4373 states and 6505 transitions. Second operand 7 states. [2020-12-22 07:06:09,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:09,036 INFO L93 Difference]: Finished difference Result 30063 states and 44410 transitions. [2020-12-22 07:06:09,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-22 07:06:09,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-12-22 07:06:09,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:09,109 INFO L225 Difference]: With dead ends: 30063 [2020-12-22 07:06:09,110 INFO L226 Difference]: Without dead ends: 25909 [2020-12-22 07:06:09,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2020-12-22 07:06:09,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25909 states. [2020-12-22 07:06:09,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25909 to 4681. [2020-12-22 07:06:09,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4681 states. [2020-12-22 07:06:09,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4681 states to 4681 states and 6915 transitions. [2020-12-22 07:06:09,623 INFO L78 Accepts]: Start accepts. Automaton has 4681 states and 6915 transitions. Word has length 65 [2020-12-22 07:06:09,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:09,624 INFO L481 AbstractCegarLoop]: Abstraction has 4681 states and 6915 transitions. [2020-12-22 07:06:09,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:06:09,624 INFO L276 IsEmpty]: Start isEmpty. Operand 4681 states and 6915 transitions. [2020-12-22 07:06:09,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 07:06:09,632 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:09,632 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:06:09,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:06:09,632 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 07:06:09,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:09,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1917613388, now seen corresponding path program 1 times [2020-12-22 07:06:09,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:09,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640231452] [2020-12-22 07:06:09,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:09,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:06:09,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640231452] [2020-12-22 07:06:09,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:09,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:06:09,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050711526] [2020-12-22 07:06:09,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:09,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:09,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:09,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:06:09,689 INFO L87 Difference]: Start difference. First operand 4681 states and 6915 transitions. Second operand 3 states. [2020-12-22 07:06:10,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:10,014 INFO L93 Difference]: Finished difference Result 9872 states and 14556 transitions. [2020-12-22 07:06:10,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:10,014 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 07:06:10,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:10,033 INFO L225 Difference]: With dead ends: 9872 [2020-12-22 07:06:10,033 INFO L226 Difference]: Without dead ends: 5212 [2020-12-22 07:06:10,040 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 07:06:10,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5212 states. [2020-12-22 07:06:10,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5212 to 5138. [2020-12-22 07:06:10,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5138 states. [2020-12-22 07:06:10,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5138 states to 5138 states and 7568 transitions. [2020-12-22 07:06:10,440 INFO L78 Accepts]: Start accepts. Automaton has 5138 states and 7568 transitions. Word has length 77 [2020-12-22 07:06:10,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:10,440 INFO L481 AbstractCegarLoop]: Abstraction has 5138 states and 7568 transitions. [2020-12-22 07:06:10,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:10,441 INFO L276 IsEmpty]: Start isEmpty. Operand 5138 states and 7568 transitions. [2020-12-22 07:06:10,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 07:06:10,444 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:10,444 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:06:10,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:06:10,444 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 07:06:10,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:10,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1623922119, now seen corresponding path program 1 times [2020-12-22 07:06:10,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:10,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343520556] [2020-12-22 07:06:10,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:10,488 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:06:10,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343520556] [2020-12-22 07:06:10,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:10,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:06:10,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647317470] [2020-12-22 07:06:10,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:06:10,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:10,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:06:10,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:06:10,491 INFO L87 Difference]: Start difference. First operand 5138 states and 7568 transitions. Second operand 4 states. [2020-12-22 07:06:11,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:11,624 INFO L93 Difference]: Finished difference Result 13746 states and 20084 transitions. [2020-12-22 07:06:11,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:06:11,625 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-12-22 07:06:11,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:11,646 INFO L225 Difference]: With dead ends: 13746 [2020-12-22 07:06:11,646 INFO L226 Difference]: Without dead ends: 8508 [2020-12-22 07:06:11,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:06:11,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8508 states. [2020-12-22 07:06:12,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8508 to 7573. [2020-12-22 07:06:12,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7573 states. [2020-12-22 07:06:12,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7573 states to 7573 states and 10928 transitions. [2020-12-22 07:06:12,177 INFO L78 Accepts]: Start accepts. Automaton has 7573 states and 10928 transitions. Word has length 88 [2020-12-22 07:06:12,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:12,177 INFO L481 AbstractCegarLoop]: Abstraction has 7573 states and 10928 transitions. [2020-12-22 07:06:12,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:06:12,177 INFO L276 IsEmpty]: Start isEmpty. Operand 7573 states and 10928 transitions. [2020-12-22 07:06:12,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 07:06:12,180 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:12,181 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:06:12,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:06:12,181 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 07:06:12,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:12,182 INFO L82 PathProgramCache]: Analyzing trace with hash 510402257, now seen corresponding path program 1 times [2020-12-22 07:06:12,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:12,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428755945] [2020-12-22 07:06:12,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:12,232 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:06:12,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428755945] [2020-12-22 07:06:12,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:12,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:06:12,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472691813] [2020-12-22 07:06:12,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:12,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:12,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:12,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:06:12,235 INFO L87 Difference]: Start difference. First operand 7573 states and 10928 transitions. Second operand 3 states. [2020-12-22 07:06:12,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:12,618 INFO L93 Difference]: Finished difference Result 10916 states and 15781 transitions. [2020-12-22 07:06:12,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:12,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-22 07:06:12,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:12,630 INFO L225 Difference]: With dead ends: 10916 [2020-12-22 07:06:12,630 INFO L226 Difference]: Without dead ends: 3351 [2020-12-22 07:06:12,644 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 07:06:12,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3351 states. [2020-12-22 07:06:12,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3351 to 3298. [2020-12-22 07:06:12,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3298 states. [2020-12-22 07:06:12,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3298 states to 3298 states and 4457 transitions. [2020-12-22 07:06:12,964 INFO L78 Accepts]: Start accepts. Automaton has 3298 states and 4457 transitions. Word has length 95 [2020-12-22 07:06:12,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:12,964 INFO L481 AbstractCegarLoop]: Abstraction has 3298 states and 4457 transitions. [2020-12-22 07:06:12,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:12,964 INFO L276 IsEmpty]: Start isEmpty. Operand 3298 states and 4457 transitions. [2020-12-22 07:06:12,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 07:06:12,966 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:12,967 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:06:12,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:06:12,967 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 07:06:12,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:12,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1852409954, now seen corresponding path program 1 times [2020-12-22 07:06:12,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:12,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794531589] [2020-12-22 07:06:12,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:13,037 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:06:13,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794531589] [2020-12-22 07:06:13,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:13,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:06:13,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53644924] [2020-12-22 07:06:13,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:06:13,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:13,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:06:13,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:06:13,040 INFO L87 Difference]: Start difference. First operand 3298 states and 4457 transitions. Second operand 5 states. [2020-12-22 07:06:13,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:13,787 INFO L93 Difference]: Finished difference Result 12573 states and 16987 transitions. [2020-12-22 07:06:13,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:06:13,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-12-22 07:06:13,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:13,804 INFO L225 Difference]: With dead ends: 12573 [2020-12-22 07:06:13,804 INFO L226 Difference]: Without dead ends: 9449 [2020-12-22 07:06:13,809 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 07:06:13,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9449 states. [2020-12-22 07:06:14,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9449 to 3300. [2020-12-22 07:06:14,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3300 states. [2020-12-22 07:06:14,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 4453 transitions. [2020-12-22 07:06:14,066 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 4453 transitions. Word has length 98 [2020-12-22 07:06:14,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:14,066 INFO L481 AbstractCegarLoop]: Abstraction has 3300 states and 4453 transitions. [2020-12-22 07:06:14,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:06:14,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 4453 transitions. [2020-12-22 07:06:14,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 07:06:14,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:14,069 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:06:14,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:06:14,069 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 07:06:14,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:14,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1180801181, now seen corresponding path program 1 times [2020-12-22 07:06:14,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:14,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730654061] [2020-12-22 07:06:14,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:14,130 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:06:14,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730654061] [2020-12-22 07:06:14,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446375347] [2020-12-22 07:06:14,131 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 07:06:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:14,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 07:06:14,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:14,408 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 07:06:14,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:06:14,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-12-22 07:06:14,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942209761] [2020-12-22 07:06:14,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:14,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:14,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:14,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:06:14,411 INFO L87 Difference]: Start difference. First operand 3300 states and 4453 transitions. Second operand 3 states. [2020-12-22 07:06:14,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:14,767 INFO L93 Difference]: Finished difference Result 3939 states and 5308 transitions. [2020-12-22 07:06:14,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:14,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-12-22 07:06:14,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:14,776 INFO L225 Difference]: With dead ends: 3939 [2020-12-22 07:06:14,776 INFO L226 Difference]: Without dead ends: 3935 [2020-12-22 07:06:14,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:06:14,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2020-12-22 07:06:15,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 3885. [2020-12-22 07:06:15,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3885 states. [2020-12-22 07:06:15,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3885 states to 3885 states and 5232 transitions. [2020-12-22 07:06:15,190 INFO L78 Accepts]: Start accepts. Automaton has 3885 states and 5232 transitions. Word has length 100 [2020-12-22 07:06:15,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:15,191 INFO L481 AbstractCegarLoop]: Abstraction has 3885 states and 5232 transitions. [2020-12-22 07:06:15,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:15,191 INFO L276 IsEmpty]: Start isEmpty. Operand 3885 states and 5232 transitions. [2020-12-22 07:06:15,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-12-22 07:06:15,194 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:15,194 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:15,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 07:06:15,396 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 07:06:15,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:15,397 INFO L82 PathProgramCache]: Analyzing trace with hash -411629455, now seen corresponding path program 1 times [2020-12-22 07:06:15,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:15,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83561876] [2020-12-22 07:06:15,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:15,504 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:06:15,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83561876] [2020-12-22 07:06:15,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764991915] [2020-12-22 07:06:15,512 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 07:06:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:15,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 07:06:15,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:15,975 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 07:06:15,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:06:15,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-12-22 07:06:15,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614489718] [2020-12-22 07:06:15,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:15,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:15,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:15,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:06:15,980 INFO L87 Difference]: Start difference. First operand 3885 states and 5232 transitions. Second operand 3 states. [2020-12-22 07:06:16,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:16,305 INFO L93 Difference]: Finished difference Result 6919 states and 9369 transitions. [2020-12-22 07:06:16,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:16,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2020-12-22 07:06:16,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:16,311 INFO L225 Difference]: With dead ends: 6919 [2020-12-22 07:06:16,312 INFO L226 Difference]: Without dead ends: 3043 [2020-12-22 07:06:16,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:06:16,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2020-12-22 07:06:16,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 2822. [2020-12-22 07:06:16,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2822 states. [2020-12-22 07:06:16,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 3744 transitions. [2020-12-22 07:06:16,663 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 3744 transitions. Word has length 155 [2020-12-22 07:06:16,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:16,664 INFO L481 AbstractCegarLoop]: Abstraction has 2822 states and 3744 transitions. [2020-12-22 07:06:16,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:16,664 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 3744 transitions. [2020-12-22 07:06:16,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-12-22 07:06:16,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:16,668 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:16,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 07:06:16,882 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 07:06:16,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:16,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1795907654, now seen corresponding path program 1 times [2020-12-22 07:06:16,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:16,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032484829] [2020-12-22 07:06:16,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:16,990 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 07:06:16,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032484829] [2020-12-22 07:06:16,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839338238] [2020-12-22 07:06:16,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:17,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 07:06:17,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:17,334 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 07:06:17,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:06:17,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-12-22 07:06:17,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443466153] [2020-12-22 07:06:17,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:17,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:17,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:17,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:06:17,336 INFO L87 Difference]: Start difference. First operand 2822 states and 3744 transitions. Second operand 3 states. [2020-12-22 07:06:17,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:17,620 INFO L93 Difference]: Finished difference Result 5475 states and 7304 transitions. [2020-12-22 07:06:17,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:17,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2020-12-22 07:06:17,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:17,624 INFO L225 Difference]: With dead ends: 5475 [2020-12-22 07:06:17,625 INFO L226 Difference]: Without dead ends: 2822 [2020-12-22 07:06:17,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:06:17,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2020-12-22 07:06:17,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2822. [2020-12-22 07:06:17,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2822 states. [2020-12-22 07:06:17,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2822 states to 2822 states and 3648 transitions. [2020-12-22 07:06:17,938 INFO L78 Accepts]: Start accepts. Automaton has 2822 states and 3648 transitions. Word has length 158 [2020-12-22 07:06:17,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:17,939 INFO L481 AbstractCegarLoop]: Abstraction has 2822 states and 3648 transitions. [2020-12-22 07:06:17,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:17,941 INFO L276 IsEmpty]: Start isEmpty. Operand 2822 states and 3648 transitions. [2020-12-22 07:06:17,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-12-22 07:06:17,947 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:17,947 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:18,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 07:06:18,163 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 07:06:18,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:18,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1353529397, now seen corresponding path program 1 times [2020-12-22 07:06:18,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:18,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718202268] [2020-12-22 07:06:18,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:18,276 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 07:06:18,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718202268] [2020-12-22 07:06:18,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114112219] [2020-12-22 07:06:18,276 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 07:06:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:18,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-22 07:06:18,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:18,542 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 07:06:18,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:06:18,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-12-22 07:06:18,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215654866] [2020-12-22 07:06:18,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:18,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:18,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:18,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:06:18,545 INFO L87 Difference]: Start difference. First operand 2822 states and 3648 transitions. Second operand 3 states. [2020-12-22 07:06:19,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:19,128 INFO L93 Difference]: Finished difference Result 6382 states and 8413 transitions. [2020-12-22 07:06:19,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:19,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2020-12-22 07:06:19,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:19,134 INFO L225 Difference]: With dead ends: 6382 [2020-12-22 07:06:19,134 INFO L226 Difference]: Without dead ends: 3729 [2020-12-22 07:06:19,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:06:19,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2020-12-22 07:06:19,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 3638. [2020-12-22 07:06:19,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3638 states. [2020-12-22 07:06:19,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 4593 transitions. [2020-12-22 07:06:19,466 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 4593 transitions. Word has length 159 [2020-12-22 07:06:19,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:19,467 INFO L481 AbstractCegarLoop]: Abstraction has 3638 states and 4593 transitions. [2020-12-22 07:06:19,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:19,467 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 4593 transitions. [2020-12-22 07:06:19,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-12-22 07:06:19,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:19,470 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:06:19,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:19,684 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 07:06:19,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:19,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1696904249, now seen corresponding path program 1 times [2020-12-22 07:06:19,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:19,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009092296] [2020-12-22 07:06:19,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 07:06:19,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009092296] [2020-12-22 07:06:19,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491504533] [2020-12-22 07:06:19,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 07:06:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:20,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 07:06:20,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 07:06:20,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:06:20,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-12-22 07:06:20,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970226102] [2020-12-22 07:06:20,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:06:20,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:20,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:06:20,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:06:20,308 INFO L87 Difference]: Start difference. First operand 3638 states and 4593 transitions. Second operand 9 states. [2020-12-22 07:06:22,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:22,637 INFO L93 Difference]: Finished difference Result 18266 states and 23153 transitions. [2020-12-22 07:06:22,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-22 07:06:22,638 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-12-22 07:06:22,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:22,678 INFO L225 Difference]: With dead ends: 18266 [2020-12-22 07:06:22,678 INFO L226 Difference]: Without dead ends: 14797 [2020-12-22 07:06:22,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 07:06:22,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14797 states. [2020-12-22 07:06:23,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14797 to 5157. [2020-12-22 07:06:23,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5157 states. [2020-12-22 07:06:23,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 6540 transitions. [2020-12-22 07:06:23,209 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 6540 transitions. Word has length 161 [2020-12-22 07:06:23,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:23,210 INFO L481 AbstractCegarLoop]: Abstraction has 5157 states and 6540 transitions. [2020-12-22 07:06:23,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:06:23,210 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 6540 transitions. [2020-12-22 07:06:23,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-12-22 07:06:23,214 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:23,214 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:06:23,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:23,429 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 07:06:23,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:23,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1534496844, now seen corresponding path program 1 times [2020-12-22 07:06:23,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:23,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073169640] [2020-12-22 07:06:23,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:23,705 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 10 proven. 192 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 07:06:23,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073169640] [2020-12-22 07:06:23,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832423393] [2020-12-22 07:06:23,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:23,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 07:06:23,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:24,271 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 10 proven. 192 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 07:06:24,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:06:24,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-12-22 07:06:24,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492529156] [2020-12-22 07:06:24,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 07:06:24,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:24,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 07:06:24,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:06:24,274 INFO L87 Difference]: Start difference. First operand 5157 states and 6540 transitions. Second operand 11 states. [2020-12-22 07:06:27,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:27,160 INFO L93 Difference]: Finished difference Result 23793 states and 30067 transitions. [2020-12-22 07:06:27,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-22 07:06:27,160 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 259 [2020-12-22 07:06:27,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:27,196 INFO L225 Difference]: With dead ends: 23793 [2020-12-22 07:06:27,196 INFO L226 Difference]: Without dead ends: 18805 [2020-12-22 07:06:27,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 277 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=261, Invalid=1631, Unknown=0, NotChecked=0, Total=1892 [2020-12-22 07:06:27,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18805 states. [2020-12-22 07:06:28,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18805 to 6553. [2020-12-22 07:06:28,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6553 states. [2020-12-22 07:06:28,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6553 states to 6553 states and 8320 transitions. [2020-12-22 07:06:28,278 INFO L78 Accepts]: Start accepts. Automaton has 6553 states and 8320 transitions. Word has length 259 [2020-12-22 07:06:28,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:28,279 INFO L481 AbstractCegarLoop]: Abstraction has 6553 states and 8320 transitions. [2020-12-22 07:06:28,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 07:06:28,279 INFO L276 IsEmpty]: Start isEmpty. Operand 6553 states and 8320 transitions. [2020-12-22 07:06:28,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-12-22 07:06:28,286 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:28,287 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:06:28,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:28,501 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 07:06:28,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:28,502 INFO L82 PathProgramCache]: Analyzing trace with hash 2121178541, now seen corresponding path program 1 times [2020-12-22 07:06:28,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:28,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482405216] [2020-12-22 07:06:28,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:29,022 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 15 proven. 448 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 07:06:29,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482405216] [2020-12-22 07:06:29,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952748083] [2020-12-22 07:06:29,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:29,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 07:06:29,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:29,859 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 15 proven. 448 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-22 07:06:29,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:06:29,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-12-22 07:06:29,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42477379] [2020-12-22 07:06:29,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 07:06:29,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:29,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 07:06:29,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:06:29,861 INFO L87 Difference]: Start difference. First operand 6553 states and 8320 transitions. Second operand 13 states. [2020-12-22 07:06:34,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:34,036 INFO L93 Difference]: Finished difference Result 29399 states and 37094 transitions. [2020-12-22 07:06:34,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-12-22 07:06:34,038 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 358 [2020-12-22 07:06:34,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:34,078 INFO L225 Difference]: With dead ends: 29399 [2020-12-22 07:06:34,078 INFO L226 Difference]: Without dead ends: 23015 [2020-12-22 07:06:34,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 380 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=315, Invalid=2655, Unknown=0, NotChecked=0, Total=2970 [2020-12-22 07:06:34,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23015 states. [2020-12-22 07:06:35,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23015 to 7951. [2020-12-22 07:06:35,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7951 states. [2020-12-22 07:06:35,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7951 states to 7951 states and 10102 transitions. [2020-12-22 07:06:35,083 INFO L78 Accepts]: Start accepts. Automaton has 7951 states and 10102 transitions. Word has length 358 [2020-12-22 07:06:35,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:35,083 INFO L481 AbstractCegarLoop]: Abstraction has 7951 states and 10102 transitions. [2020-12-22 07:06:35,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 07:06:35,084 INFO L276 IsEmpty]: Start isEmpty. Operand 7951 states and 10102 transitions. [2020-12-22 07:06:35,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2020-12-22 07:06:35,088 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:35,089 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:06:35,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:35,304 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 07:06:35,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:35,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1147875523, now seen corresponding path program 1 times [2020-12-22 07:06:35,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:35,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557919274] [2020-12-22 07:06:35,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:35,681 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 533 proven. 299 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 07:06:35,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557919274] [2020-12-22 07:06:35,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605034218] [2020-12-22 07:06:35,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:35,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 1331 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:06:35,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 832 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 07:06:36,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:06:36,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 13 [2020-12-22 07:06:36,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468242466] [2020-12-22 07:06:36,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 07:06:36,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:36,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 07:06:36,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:06:36,667 INFO L87 Difference]: Start difference. First operand 7951 states and 10102 transitions. Second operand 11 states. [2020-12-22 07:06:38,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:38,371 INFO L93 Difference]: Finished difference Result 18380 states and 23261 transitions. [2020-12-22 07:06:38,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 07:06:38,372 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 458 [2020-12-22 07:06:38,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:38,385 INFO L225 Difference]: With dead ends: 18380 [2020-12-22 07:06:38,386 INFO L226 Difference]: Without dead ends: 10595 [2020-12-22 07:06:38,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=198, Invalid=452, Unknown=0, NotChecked=0, Total=650 [2020-12-22 07:06:38,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10595 states. [2020-12-22 07:06:39,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10595 to 7821. [2020-12-22 07:06:39,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7821 states. [2020-12-22 07:06:39,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7821 states to 7821 states and 9927 transitions. [2020-12-22 07:06:39,157 INFO L78 Accepts]: Start accepts. Automaton has 7821 states and 9927 transitions. Word has length 458 [2020-12-22 07:06:39,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:39,157 INFO L481 AbstractCegarLoop]: Abstraction has 7821 states and 9927 transitions. [2020-12-22 07:06:39,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 07:06:39,158 INFO L276 IsEmpty]: Start isEmpty. Operand 7821 states and 9927 transitions. [2020-12-22 07:06:39,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2020-12-22 07:06:39,161 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:39,162 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:06:39,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 07:06:39,371 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 07:06:39,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:39,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1350675601, now seen corresponding path program 1 times [2020-12-22 07:06:39,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:39,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764088062] [2020-12-22 07:06:39,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:39,611 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2020-12-22 07:06:39,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764088062] [2020-12-22 07:06:39,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:39,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:06:39,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595985782] [2020-12-22 07:06:39,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:06:39,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:39,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:06:39,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:06:39,613 INFO L87 Difference]: Start difference. First operand 7821 states and 9927 transitions. Second operand 3 states. [2020-12-22 07:06:40,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:40,014 INFO L93 Difference]: Finished difference Result 9446 states and 11784 transitions. [2020-12-22 07:06:40,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:06:40,014 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 459 [2020-12-22 07:06:40,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:40,017 INFO L225 Difference]: With dead ends: 9446 [2020-12-22 07:06:40,017 INFO L226 Difference]: Without dead ends: 1680 [2020-12-22 07:06:40,021 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 07:06:40,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2020-12-22 07:06:40,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1677. [2020-12-22 07:06:40,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1677 states. [2020-12-22 07:06:40,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 1844 transitions. [2020-12-22 07:06:40,187 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 1844 transitions. Word has length 459 [2020-12-22 07:06:40,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:40,188 INFO L481 AbstractCegarLoop]: Abstraction has 1677 states and 1844 transitions. [2020-12-22 07:06:40,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:06:40,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 1844 transitions. [2020-12-22 07:06:40,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2020-12-22 07:06:40,191 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:40,191 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:06:40,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 07:06:40,191 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 07:06:40,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:40,194 INFO L82 PathProgramCache]: Analyzing trace with hash -2094133201, now seen corresponding path program 1 times [2020-12-22 07:06:40,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:40,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849695200] [2020-12-22 07:06:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:40,545 INFO L134 CoverageAnalysis]: Checked inductivity of 745 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2020-12-22 07:06:40,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849695200] [2020-12-22 07:06:40,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:40,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:06:40,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535771762] [2020-12-22 07:06:40,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:06:40,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:40,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:06:40,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:06:40,548 INFO L87 Difference]: Start difference. First operand 1677 states and 1844 transitions. Second operand 7 states. [2020-12-22 07:06:41,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:41,005 INFO L93 Difference]: Finished difference Result 3436 states and 3801 transitions. [2020-12-22 07:06:41,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 07:06:41,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 460 [2020-12-22 07:06:41,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:41,009 INFO L225 Difference]: With dead ends: 3436 [2020-12-22 07:06:41,009 INFO L226 Difference]: Without dead ends: 2729 [2020-12-22 07:06:41,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:06:41,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2020-12-22 07:06:41,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 1671. [2020-12-22 07:06:41,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1671 states. [2020-12-22 07:06:41,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 1830 transitions. [2020-12-22 07:06:41,216 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 1830 transitions. Word has length 460 [2020-12-22 07:06:41,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:41,217 INFO L481 AbstractCegarLoop]: Abstraction has 1671 states and 1830 transitions. [2020-12-22 07:06:41,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:06:41,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 1830 transitions. [2020-12-22 07:06:41,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-12-22 07:06:41,220 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:41,220 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:06:41,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 07:06:41,221 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 07:06:41,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:41,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1190024889, now seen corresponding path program 1 times [2020-12-22 07:06:41,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:41,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024883622] [2020-12-22 07:06:41,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2020-12-22 07:06:41,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024883622] [2020-12-22 07:06:41,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:06:41,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:06:41,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666313500] [2020-12-22 07:06:41,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:06:41,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:41,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:06:41,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:06:41,521 INFO L87 Difference]: Start difference. First operand 1671 states and 1830 transitions. Second operand 5 states. [2020-12-22 07:06:41,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:41,867 INFO L93 Difference]: Finished difference Result 2818 states and 3106 transitions. [2020-12-22 07:06:41,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:06:41,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 461 [2020-12-22 07:06:41,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:41,872 INFO L225 Difference]: With dead ends: 2818 [2020-12-22 07:06:41,872 INFO L226 Difference]: Without dead ends: 2109 [2020-12-22 07:06:41,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 07:06:41,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2020-12-22 07:06:42,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 1621. [2020-12-22 07:06:42,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1621 states. [2020-12-22 07:06:42,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 1733 transitions. [2020-12-22 07:06:42,083 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 1733 transitions. Word has length 461 [2020-12-22 07:06:42,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:42,084 INFO L481 AbstractCegarLoop]: Abstraction has 1621 states and 1733 transitions. [2020-12-22 07:06:42,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:06:42,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 1733 transitions. [2020-12-22 07:06:42,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2020-12-22 07:06:42,088 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:42,088 INFO L422 BasicCegarLoop]: trace histogram [10, 8, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:42,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 07:06:42,089 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 07:06:42,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:42,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1565931232, now seen corresponding path program 1 times [2020-12-22 07:06:42,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:42,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95976763] [2020-12-22 07:06:42,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:42,943 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 91 proven. 308 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2020-12-22 07:06:42,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95976763] [2020-12-22 07:06:42,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980624432] [2020-12-22 07:06:42,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:43,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 07:06:43,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:44,182 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 93 proven. 255 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2020-12-22 07:06:44,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:06:44,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 23 [2020-12-22 07:06:44,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23099278] [2020-12-22 07:06:44,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-22 07:06:44,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:44,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-22 07:06:44,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2020-12-22 07:06:44,185 INFO L87 Difference]: Start difference. First operand 1621 states and 1733 transitions. Second operand 23 states. [2020-12-22 07:06:45,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:45,365 INFO L93 Difference]: Finished difference Result 1935 states and 2071 transitions. [2020-12-22 07:06:45,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-22 07:06:45,365 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 517 [2020-12-22 07:06:45,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:45,367 INFO L225 Difference]: With dead ends: 1935 [2020-12-22 07:06:45,367 INFO L226 Difference]: Without dead ends: 1933 [2020-12-22 07:06:45,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 521 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=308, Invalid=1762, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 07:06:45,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2020-12-22 07:06:45,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1621. [2020-12-22 07:06:45,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1621 states. [2020-12-22 07:06:45,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 1732 transitions. [2020-12-22 07:06:45,542 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 1732 transitions. Word has length 517 [2020-12-22 07:06:45,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:45,542 INFO L481 AbstractCegarLoop]: Abstraction has 1621 states and 1732 transitions. [2020-12-22 07:06:45,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-22 07:06:45,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 1732 transitions. [2020-12-22 07:06:45,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2020-12-22 07:06:45,546 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:45,547 INFO L422 BasicCegarLoop]: trace histogram [11, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:06:45,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 07:06:45,754 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 07:06:45,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:45,755 INFO L82 PathProgramCache]: Analyzing trace with hash 870653210, now seen corresponding path program 1 times [2020-12-22 07:06:45,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:45,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647390580] [2020-12-22 07:06:45,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:46,187 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 269 proven. 47 refuted. 0 times theorem prover too weak. 665 trivial. 0 not checked. [2020-12-22 07:06:46,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647390580] [2020-12-22 07:06:46,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794877264] [2020-12-22 07:06:46,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:46,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 07:06:46,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:47,172 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 269 proven. 47 refuted. 0 times theorem prover too weak. 665 trivial. 0 not checked. [2020-12-22 07:06:47,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:06:47,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-12-22 07:06:47,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45140349] [2020-12-22 07:06:47,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:06:47,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:47,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:06:47,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:06:47,174 INFO L87 Difference]: Start difference. First operand 1621 states and 1732 transitions. Second operand 9 states. [2020-12-22 07:06:47,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:47,769 INFO L93 Difference]: Finished difference Result 2619 states and 2802 transitions. [2020-12-22 07:06:47,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 07:06:47,769 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 565 [2020-12-22 07:06:47,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:47,771 INFO L225 Difference]: With dead ends: 2619 [2020-12-22 07:06:47,771 INFO L226 Difference]: Without dead ends: 2139 [2020-12-22 07:06:47,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 573 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-12-22 07:06:47,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2020-12-22 07:06:47,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 1617. [2020-12-22 07:06:47,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1617 states. [2020-12-22 07:06:47,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 1720 transitions. [2020-12-22 07:06:47,953 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 1720 transitions. Word has length 565 [2020-12-22 07:06:47,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:47,954 INFO L481 AbstractCegarLoop]: Abstraction has 1617 states and 1720 transitions. [2020-12-22 07:06:47,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:06:47,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 1720 transitions. [2020-12-22 07:06:47,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2020-12-22 07:06:47,958 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:47,958 INFO L422 BasicCegarLoop]: trace histogram [12, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:06:48,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-22 07:06:48,167 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 07:06:48,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:48,168 INFO L82 PathProgramCache]: Analyzing trace with hash -2114825569, now seen corresponding path program 1 times [2020-12-22 07:06:48,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:48,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455473476] [2020-12-22 07:06:48,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:49,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 172 proven. 774 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2020-12-22 07:06:49,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455473476] [2020-12-22 07:06:49,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039213590] [2020-12-22 07:06:49,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:49,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:49,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 1734 conjuncts, 45 conjunts are in the unsatisfiable core [2020-12-22 07:06:49,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:50,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1150 backedges. 234 proven. 676 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-12-22 07:06:50,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:06:50,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 32 [2020-12-22 07:06:50,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099563904] [2020-12-22 07:06:50,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-12-22 07:06:50,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:50,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-12-22 07:06:50,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=910, Unknown=0, NotChecked=0, Total=992 [2020-12-22 07:06:50,936 INFO L87 Difference]: Start difference. First operand 1617 states and 1720 transitions. Second operand 32 states. [2020-12-22 07:06:52,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:52,683 INFO L93 Difference]: Finished difference Result 1863 states and 1983 transitions. [2020-12-22 07:06:52,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-22 07:06:52,683 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 623 [2020-12-22 07:06:52,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:52,685 INFO L225 Difference]: With dead ends: 1863 [2020-12-22 07:06:52,686 INFO L226 Difference]: Without dead ends: 1861 [2020-12-22 07:06:52,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 625 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=435, Invalid=3347, Unknown=0, NotChecked=0, Total=3782 [2020-12-22 07:06:52,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2020-12-22 07:06:52,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1617. [2020-12-22 07:06:52,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1617 states. [2020-12-22 07:06:52,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 1719 transitions. [2020-12-22 07:06:52,882 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 1719 transitions. Word has length 623 [2020-12-22 07:06:52,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:52,882 INFO L481 AbstractCegarLoop]: Abstraction has 1617 states and 1719 transitions. [2020-12-22 07:06:52,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-12-22 07:06:52,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 1719 transitions. [2020-12-22 07:06:52,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 672 [2020-12-22 07:06:52,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:52,886 INFO L422 BasicCegarLoop]: trace histogram [13, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:06:53,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-22 07:06:53,088 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 07:06:53,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:53,089 INFO L82 PathProgramCache]: Analyzing trace with hash -874836839, now seen corresponding path program 1 times [2020-12-22 07:06:53,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:53,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247994131] [2020-12-22 07:06:53,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:53,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 454 proven. 208 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2020-12-22 07:06:53,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247994131] [2020-12-22 07:06:53,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137724384] [2020-12-22 07:06:53,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:54,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 1861 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 07:06:54,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:54,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 454 proven. 208 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2020-12-22 07:06:54,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:06:54,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-12-22 07:06:54,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345260182] [2020-12-22 07:06:54,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 07:06:54,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:54,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 07:06:54,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:06:54,953 INFO L87 Difference]: Start difference. First operand 1617 states and 1719 transitions. Second operand 11 states. [2020-12-22 07:06:55,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:06:55,723 INFO L93 Difference]: Finished difference Result 2259 states and 2407 transitions. [2020-12-22 07:06:55,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 07:06:55,723 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 671 [2020-12-22 07:06:55,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:06:55,725 INFO L225 Difference]: With dead ends: 2259 [2020-12-22 07:06:55,725 INFO L226 Difference]: Without dead ends: 1968 [2020-12-22 07:06:55,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 705 GetRequests, 682 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-12-22 07:06:55,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2020-12-22 07:06:55,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1615. [2020-12-22 07:06:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1615 states. [2020-12-22 07:06:55,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 1709 transitions. [2020-12-22 07:06:55,923 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 1709 transitions. Word has length 671 [2020-12-22 07:06:55,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:06:55,923 INFO L481 AbstractCegarLoop]: Abstraction has 1615 states and 1709 transitions. [2020-12-22 07:06:55,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 07:06:55,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 1709 transitions. [2020-12-22 07:06:55,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2020-12-22 07:06:55,928 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:06:55,928 INFO L422 BasicCegarLoop]: trace histogram [14, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:06:56,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:56,134 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 07:06:56,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:06:56,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1205159151, now seen corresponding path program 1 times [2020-12-22 07:06:56,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:06:56,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120221323] [2020-12-22 07:06:56,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:06:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:57,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 131 proven. 1372 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-12-22 07:06:57,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120221323] [2020-12-22 07:06:57,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673371295] [2020-12-22 07:06:57,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:06:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:06:58,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 2002 conjuncts, 57 conjunts are in the unsatisfiable core [2020-12-22 07:06:58,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:06:59,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 287 proven. 1198 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-12-22 07:06:59,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:06:59,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 38 [2020-12-22 07:06:59,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104807189] [2020-12-22 07:06:59,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-12-22 07:06:59,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:06:59,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-12-22 07:06:59,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1306, Unknown=0, NotChecked=0, Total=1406 [2020-12-22 07:06:59,830 INFO L87 Difference]: Start difference. First operand 1615 states and 1709 transitions. Second operand 38 states. [2020-12-22 07:07:01,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:07:01,946 INFO L93 Difference]: Finished difference Result 1871 states and 1982 transitions. [2020-12-22 07:07:01,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-12-22 07:07:01,947 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 730 [2020-12-22 07:07:01,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:07:01,950 INFO L225 Difference]: With dead ends: 1871 [2020-12-22 07:07:01,950 INFO L226 Difference]: Without dead ends: 1869 [2020-12-22 07:07:01,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 734 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1184 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=498, Invalid=4758, Unknown=0, NotChecked=0, Total=5256 [2020-12-22 07:07:01,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2020-12-22 07:07:02,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1615. [2020-12-22 07:07:02,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1615 states. [2020-12-22 07:07:02,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 1708 transitions. [2020-12-22 07:07:02,172 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 1708 transitions. Word has length 730 [2020-12-22 07:07:02,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:07:02,174 INFO L481 AbstractCegarLoop]: Abstraction has 1615 states and 1708 transitions. [2020-12-22 07:07:02,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-12-22 07:07:02,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 1708 transitions. [2020-12-22 07:07:02,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2020-12-22 07:07:02,181 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:07:02,182 INFO L422 BasicCegarLoop]: trace histogram [15, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:07:02,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-22 07:07:02,391 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 07:07:02,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:07:02,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1676282123, now seen corresponding path program 1 times [2020-12-22 07:07:02,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:07:02,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125079902] [2020-12-22 07:07:02,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:07:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:03,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1796 backedges. 639 proven. 484 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2020-12-22 07:07:03,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125079902] [2020-12-22 07:07:03,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998755261] [2020-12-22 07:07:03,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:07:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:03,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 2129 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 07:07:03,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:07:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1796 backedges. 639 proven. 484 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2020-12-22 07:07:04,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:07:04,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-12-22 07:07:04,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022247399] [2020-12-22 07:07:04,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 07:07:04,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:07:04,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 07:07:04,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:07:04,948 INFO L87 Difference]: Start difference. First operand 1615 states and 1708 transitions. Second operand 13 states. [2020-12-22 07:07:05,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:07:05,936 INFO L93 Difference]: Finished difference Result 1976 states and 2098 transitions. [2020-12-22 07:07:05,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 07:07:05,937 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 778 [2020-12-22 07:07:05,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:07:05,940 INFO L225 Difference]: With dead ends: 1976 [2020-12-22 07:07:05,940 INFO L226 Difference]: Without dead ends: 1874 [2020-12-22 07:07:05,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 817 GetRequests, 791 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2020-12-22 07:07:05,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2020-12-22 07:07:06,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1613. [2020-12-22 07:07:06,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1613 states. [2020-12-22 07:07:06,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 1699 transitions. [2020-12-22 07:07:06,167 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 1699 transitions. Word has length 778 [2020-12-22 07:07:06,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:07:06,167 INFO L481 AbstractCegarLoop]: Abstraction has 1613 states and 1699 transitions. [2020-12-22 07:07:06,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 07:07:06,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 1699 transitions. [2020-12-22 07:07:06,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2020-12-22 07:07:06,173 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:07:06,174 INFO L422 BasicCegarLoop]: trace histogram [16, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:07:06,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:07:06,375 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 07:07:06,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:07:06,376 INFO L82 PathProgramCache]: Analyzing trace with hash 771452747, now seen corresponding path program 1 times [2020-12-22 07:07:06,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:07:06,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507886313] [2020-12-22 07:07:06,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:07:06,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:08,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2093 backedges. 90 proven. 1978 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-22 07:07:08,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507886313] [2020-12-22 07:07:08,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543467339] [2020-12-22 07:07:08,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:07:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:07:08,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 69 conjunts are in the unsatisfiable core [2020-12-22 07:07:08,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:07:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2093 backedges. 248 proven. 1820 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-22 07:07:11,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:07:11,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 44 [2020-12-22 07:07:11,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16810713] [2020-12-22 07:07:11,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-12-22 07:07:11,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:07:11,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-12-22 07:07:11,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1774, Unknown=0, NotChecked=0, Total=1892 [2020-12-22 07:07:11,256 INFO L87 Difference]: Start difference. First operand 1613 states and 1699 transitions. Second operand 44 states. [2020-12-22 07:07:14,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:07:14,918 INFO L93 Difference]: Finished difference Result 1874 states and 1978 transitions. [2020-12-22 07:07:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-12-22 07:07:14,918 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 838 [2020-12-22 07:07:14,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:07:14,919 INFO L225 Difference]: With dead ends: 1874 [2020-12-22 07:07:14,919 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 07:07:14,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 940 GetRequests, 849 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1941 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=675, Invalid=7515, Unknown=0, NotChecked=0, Total=8190 [2020-12-22 07:07:14,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 07:07:14,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 07:07:14,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 07:07:14,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 07:07:14,924 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 838 [2020-12-22 07:07:14,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:07:14,924 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 07:07:14,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-12-22 07:07:14,924 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 07:07:14,924 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 07:07:15,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-22 07:07:15,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 07:07:15,271 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 111 [2020-12-22 07:07:16,011 WARN L197 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 128 [2020-12-22 07:07:16,508 WARN L197 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 242 [2020-12-22 07:07:16,804 WARN L197 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 204 [2020-12-22 07:07:18,793 WARN L197 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 713 DAG size of output: 568 [2020-12-22 07:07:21,524 WARN L197 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 832 DAG size of output: 612 [2020-12-22 07:07:23,267 WARN L197 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 713 DAG size of output: 581 [2020-12-22 07:07:30,142 WARN L197 SmtUtils]: Spent 6.54 s on a formula simplification. DAG size of input: 1605 DAG size of output: 1287 [2020-12-22 07:07:30,321 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 209 [2020-12-22 07:07:30,654 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 276 [2020-12-22 07:07:31,002 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 204 [2020-12-22 07:07:32,264 WARN L197 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 544 DAG size of output: 455 [2020-12-22 07:07:34,145 WARN L197 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 693 DAG size of output: 544 [2020-12-22 07:07:34,359 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 201 [2020-12-22 07:07:36,164 WARN L197 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 709 DAG size of output: 577 [2020-12-22 07:07:37,915 WARN L197 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 713 DAG size of output: 581 [2020-12-22 07:07:38,556 WARN L197 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 451 DAG size of output: 382 [2020-12-22 07:07:38,976 WARN L197 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 350 DAG size of output: 323 [2020-12-22 07:07:40,760 WARN L197 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 693 DAG size of output: 544 [2020-12-22 07:07:40,959 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 183 [2020-12-22 07:07:42,752 WARN L197 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 693 DAG size of output: 544 [2020-12-22 07:07:42,874 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 228 DAG size of output: 192 [2020-12-22 07:07:43,023 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 259 DAG size of output: 234 [2020-12-22 07:07:43,794 WARN L197 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 489 [2020-12-22 07:07:48,287 WARN L197 SmtUtils]: Spent 4.49 s on a formula simplification. DAG size of input: 1360 DAG size of output: 1093 [2020-12-22 07:07:50,052 WARN L197 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 693 DAG size of output: 544 [2020-12-22 07:07:51,825 WARN L197 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 663 DAG size of output: 522 [2020-12-22 07:07:51,956 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 203 [2020-12-22 07:07:53,833 WARN L197 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 693 DAG size of output: 544 [2020-12-22 07:07:54,034 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 214 [2020-12-22 07:07:54,185 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 213 [2020-12-22 07:07:55,857 WARN L197 SmtUtils]: Spent 1.67 s on a formula simplification. DAG size of input: 713 DAG size of output: 581 [2020-12-22 07:07:56,713 WARN L197 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 489 [2020-12-22 07:07:57,364 WARN L197 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 550 DAG size of output: 438 [2020-12-22 07:07:58,161 WARN L197 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 489 [2020-12-22 07:07:58,864 WARN L197 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 550 DAG size of output: 463 [2020-12-22 07:07:59,001 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 203 [2020-12-22 07:07:59,652 WARN L197 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 377 DAG size of output: 331 [2020-12-22 07:08:02,656 WARN L197 SmtUtils]: Spent 2.95 s on a formula simplification. DAG size of input: 742 DAG size of output: 624 [2020-12-22 07:08:02,886 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 220 [2020-12-22 07:08:04,534 WARN L197 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 713 DAG size of output: 568 [2020-12-22 07:08:04,662 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 190 [2020-12-22 07:08:04,849 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 195 [2020-12-22 07:08:06,491 WARN L197 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 713 DAG size of output: 568 [2020-12-22 07:08:07,307 WARN L197 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 489 [2020-12-22 07:08:07,518 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 241 [2020-12-22 07:08:07,707 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 204 [2020-12-22 07:08:08,124 WARN L197 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 345 DAG size of output: 316 [2020-12-22 07:08:08,252 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 198 [2020-12-22 07:08:09,002 WARN L197 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 582 DAG size of output: 504 [2020-12-22 07:08:09,233 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 172 [2020-12-22 07:08:09,920 WARN L197 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 489 [2020-12-22 07:08:10,049 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 190 [2020-12-22 07:08:10,277 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 255 DAG size of output: 220 [2020-12-22 07:08:10,686 WARN L197 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2020-12-22 07:08:11,821 WARN L197 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 127 DAG size of output: 24 [2020-12-22 07:08:12,268 WARN L197 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 79 [2020-12-22 07:08:14,048 WARN L197 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 240 DAG size of output: 125 [2020-12-22 07:08:15,389 WARN L197 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 200 DAG size of output: 121 [2020-12-22 07:08:22,742 WARN L197 SmtUtils]: Spent 7.35 s on a formula simplification. DAG size of input: 544 DAG size of output: 190 [2020-12-22 07:08:23,629 WARN L197 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 123 [2020-12-22 07:08:31,926 WARN L197 SmtUtils]: Spent 8.29 s on a formula simplification. DAG size of input: 588 DAG size of output: 188 [2020-12-22 07:08:38,930 WARN L197 SmtUtils]: Spent 7.00 s on a formula simplification. DAG size of input: 557 DAG size of output: 190 [2020-12-22 07:08:39,757 WARN L197 SmtUtils]: Spent 824.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 123 [2020-12-22 07:08:40,590 WARN L197 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 122 [2020-12-22 07:08:41,421 WARN L197 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 122 [2020-12-22 07:08:41,772 WARN L197 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 48 [2020-12-22 07:08:42,169 WARN L197 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2020-12-22 07:08:42,293 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-22 07:09:06,322 WARN L197 SmtUtils]: Spent 24.02 s on a formula simplification. DAG size of input: 1213 DAG size of output: 228 [2020-12-22 07:09:06,755 WARN L197 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 79 [2020-12-22 07:09:08,441 WARN L197 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 206 DAG size of output: 125 [2020-12-22 07:09:08,844 WARN L197 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2020-12-22 07:09:08,970 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-22 07:09:11,859 WARN L197 SmtUtils]: Spent 2.89 s on a formula simplification. DAG size of input: 260 DAG size of output: 131 [2020-12-22 07:09:12,292 WARN L197 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 79 [2020-12-22 07:09:12,724 WARN L197 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 79 [2020-12-22 07:09:13,570 WARN L197 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 123 [2020-12-22 07:09:14,860 WARN L197 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 200 DAG size of output: 121 [2020-12-22 07:09:21,141 WARN L197 SmtUtils]: Spent 6.28 s on a formula simplification. DAG size of input: 437 DAG size of output: 175 [2020-12-22 07:09:21,984 WARN L197 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 123 [2020-12-22 07:09:28,457 WARN L197 SmtUtils]: Spent 6.47 s on a formula simplification. DAG size of input: 513 DAG size of output: 167 [2020-12-22 07:09:29,303 WARN L197 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 123 [2020-12-22 07:09:30,955 WARN L197 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 197 DAG size of output: 122 [2020-12-22 07:09:38,050 WARN L197 SmtUtils]: Spent 7.09 s on a formula simplification. DAG size of input: 541 DAG size of output: 168 [2020-12-22 07:09:38,185 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-12-22 07:09:38,593 WARN L197 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2020-12-22 07:09:38,719 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-22 07:09:45,926 WARN L197 SmtUtils]: Spent 7.20 s on a formula simplification. DAG size of input: 557 DAG size of output: 190 [2020-12-22 07:09:46,336 WARN L197 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2020-12-22 07:09:46,464 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-22 07:09:50,374 WARN L197 SmtUtils]: Spent 3.91 s on a formula simplification. DAG size of input: 375 DAG size of output: 133 [2020-12-22 07:09:52,854 WARN L197 SmtUtils]: Spent 2.48 s on a formula simplification. DAG size of input: 307 DAG size of output: 109