/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/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:07:59,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:07:59,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:07:59,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:07:59,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:07:59,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:07:59,067 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:07:59,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:07:59,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:07:59,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:07:59,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:07:59,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:07:59,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:07:59,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:07:59,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:07:59,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:07:59,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:07:59,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:07:59,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:07:59,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:07:59,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:07:59,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:07:59,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:07:59,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:07:59,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 10:07:59,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:07:59,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:07:59,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:07:59,142 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:07:59,200 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:07:59,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:07:59,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:07:59,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:07:59,204 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:07:59,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:07:59,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:07:59,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:07:59,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:07:59,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:07:59,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:07:59,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:07:59,208 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:07:59,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:07:59,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:07:59,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:07:59,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:07:59,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:07:59,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:07:59,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:07:59,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:07:59,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:07:59,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:07:59,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:07:59,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:07:59,211 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:07:59,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:07:59,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:07:59,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:07:59,614 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:07:59,614 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:07:59,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label08.c [2020-12-22 10:07:59,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2973a8276/cbe8285acbf1461b8697a2fbe99c97ed/FLAGb73e813fe [2020-12-22 10:08:00,723 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:08:00,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label08.c [2020-12-22 10:08:00,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2973a8276/cbe8285acbf1461b8697a2fbe99c97ed/FLAGb73e813fe [2020-12-22 10:08:01,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2973a8276/cbe8285acbf1461b8697a2fbe99c97ed [2020-12-22 10:08:01,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:08:01,154 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:08:01,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:08:01,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:08:01,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:08:01,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:08:01" (1/1) ... [2020-12-22 10:08:01,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61061b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:01, skipping insertion in model container [2020-12-22 10:08:01,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:08:01" (1/1) ... [2020-12-22 10:08:01,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:08:01,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:08:01,735 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/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label08.c[15614,15627] [2020-12-22 10:08:01,790 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/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label08.c[18878,18891] [2020-12-22 10:08:02,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:08:02,803 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:08:02,899 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/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label08.c[15614,15627] [2020-12-22 10:08:02,907 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/combinations/pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label08.c[18878,18891] [2020-12-22 10:08:03,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:08:03,534 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:08:03,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03 WrapperNode [2020-12-22 10:08:03,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:08:03,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:08:03,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:08:03,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:08:03,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (1/1) ... [2020-12-22 10:08:03,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (1/1) ... [2020-12-22 10:08:04,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:08:04,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:08:04,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:08:04,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:08:04,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (1/1) ... [2020-12-22 10:08:04,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (1/1) ... [2020-12-22 10:08:04,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (1/1) ... [2020-12-22 10:08:04,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (1/1) ... [2020-12-22 10:08:04,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (1/1) ... [2020-12-22 10:08:04,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (1/1) ... [2020-12-22 10:08:04,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (1/1) ... [2020-12-22 10:08:04,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:08:04,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:08:04,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:08:04,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:08:04,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (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 10:08:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:08:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:08:04,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:08:04,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:08:10,069 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:08:10,070 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2020-12-22 10:08:10,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:08:10 BoogieIcfgContainer [2020-12-22 10:08:10,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:08:10,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:08:10,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:08:10,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:08:10,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:08:01" (1/3) ... [2020-12-22 10:08:10,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e384d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:08:10, skipping insertion in model container [2020-12-22 10:08:10,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:08:03" (2/3) ... [2020-12-22 10:08:10,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e384d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:08:10, skipping insertion in model container [2020-12-22 10:08:10,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:08:10" (3/3) ... [2020-12-22 10:08:10,089 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals+Problem12_label08.c [2020-12-22 10:08:10,096 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:08:10,102 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:08:10,125 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 10:08:10,178 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:08:10,178 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:08:10,178 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:08:10,178 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:08:10,179 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:08:10,179 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:08:10,179 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:08:10,179 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:08:10,220 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states. [2020-12-22 10:08:10,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 10:08:10,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:10,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:08:10,231 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:10,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:10,238 INFO L82 PathProgramCache]: Analyzing trace with hash -845145427, now seen corresponding path program 1 times [2020-12-22 10:08:10,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:10,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723561085] [2020-12-22 10:08:10,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:10,641 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 10:08:10,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723561085] [2020-12-22 10:08:10,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:10,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:08:10,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349858065] [2020-12-22 10:08:10,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:10,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:10,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:10,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:10,669 INFO L87 Difference]: Start difference. First operand 927 states. Second operand 3 states. [2020-12-22 10:08:17,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:17,143 INFO L93 Difference]: Finished difference Result 2577 states and 4938 transitions. [2020-12-22 10:08:17,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:17,145 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-22 10:08:17,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:17,184 INFO L225 Difference]: With dead ends: 2577 [2020-12-22 10:08:17,185 INFO L226 Difference]: Without dead ends: 1612 [2020-12-22 10:08:17,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 10:08:17,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2020-12-22 10:08:17,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1612. [2020-12-22 10:08:17,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1612 states. [2020-12-22 10:08:17,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2601 transitions. [2020-12-22 10:08:17,387 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2601 transitions. Word has length 30 [2020-12-22 10:08:17,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:17,388 INFO L481 AbstractCegarLoop]: Abstraction has 1612 states and 2601 transitions. [2020-12-22 10:08:17,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:17,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2601 transitions. [2020-12-22 10:08:17,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 10:08:17,399 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:17,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:08:17,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:08:17,400 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:17,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:17,402 INFO L82 PathProgramCache]: Analyzing trace with hash -46774319, now seen corresponding path program 1 times [2020-12-22 10:08:17,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:17,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245014598] [2020-12-22 10:08:17,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:17,588 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 10:08:17,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245014598] [2020-12-22 10:08:17,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:17,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:08:17,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192260633] [2020-12-22 10:08:17,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 10:08:17,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:17,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 10:08:17,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:08:17,594 INFO L87 Difference]: Start difference. First operand 1612 states and 2601 transitions. Second operand 5 states. [2020-12-22 10:08:17,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:17,717 INFO L93 Difference]: Finished difference Result 1677 states and 2702 transitions. [2020-12-22 10:08:17,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:08:17,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-22 10:08:17,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:17,728 INFO L225 Difference]: With dead ends: 1677 [2020-12-22 10:08:17,728 INFO L226 Difference]: Without dead ends: 1612 [2020-12-22 10:08:17,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 10:08:17,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2020-12-22 10:08:17,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1612. [2020-12-22 10:08:17,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1612 states. [2020-12-22 10:08:17,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2561 transitions. [2020-12-22 10:08:17,781 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2561 transitions. Word has length 38 [2020-12-22 10:08:17,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:17,782 INFO L481 AbstractCegarLoop]: Abstraction has 1612 states and 2561 transitions. [2020-12-22 10:08:17,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 10:08:17,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2561 transitions. [2020-12-22 10:08:17,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:08:17,788 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:17,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:08:17,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:08:17,790 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:17,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:17,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1531755293, now seen corresponding path program 1 times [2020-12-22 10:08:17,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:17,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958523915] [2020-12-22 10:08:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:17,979 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 10:08:17,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958523915] [2020-12-22 10:08:17,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:17,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:17,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105732022] [2020-12-22 10:08:17,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:17,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:17,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:17,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:17,985 INFO L87 Difference]: Start difference. First operand 1612 states and 2561 transitions. Second operand 3 states. [2020-12-22 10:08:18,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:18,038 INFO L93 Difference]: Finished difference Result 1728 states and 2745 transitions. [2020-12-22 10:08:18,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:18,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:08:18,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:18,049 INFO L225 Difference]: With dead ends: 1728 [2020-12-22 10:08:18,050 INFO L226 Difference]: Without dead ends: 1667 [2020-12-22 10:08:18,052 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 10:08:18,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2020-12-22 10:08:18,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1665. [2020-12-22 10:08:18,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1665 states. [2020-12-22 10:08:18,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2646 transitions. [2020-12-22 10:08:18,124 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2646 transitions. Word has length 77 [2020-12-22 10:08:18,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:18,125 INFO L481 AbstractCegarLoop]: Abstraction has 1665 states and 2646 transitions. [2020-12-22 10:08:18,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:18,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2646 transitions. [2020-12-22 10:08:18,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:08:18,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:18,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:08:18,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 10:08:18,127 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:18,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:18,128 INFO L82 PathProgramCache]: Analyzing trace with hash 786172563, now seen corresponding path program 1 times [2020-12-22 10:08:18,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:18,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520676024] [2020-12-22 10:08:18,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:18,273 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 10:08:18,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520676024] [2020-12-22 10:08:18,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:18,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:18,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241662103] [2020-12-22 10:08:18,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:18,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:18,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:18,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:18,276 INFO L87 Difference]: Start difference. First operand 1665 states and 2646 transitions. Second operand 3 states. [2020-12-22 10:08:18,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:18,327 INFO L93 Difference]: Finished difference Result 1881 states and 2990 transitions. [2020-12-22 10:08:18,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:18,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:08:18,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:18,341 INFO L225 Difference]: With dead ends: 1881 [2020-12-22 10:08:18,342 INFO L226 Difference]: Without dead ends: 1767 [2020-12-22 10:08:18,343 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 10:08:18,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2020-12-22 10:08:18,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1765. [2020-12-22 10:08:18,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1765 states. [2020-12-22 10:08:18,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1765 states to 1765 states and 2805 transitions. [2020-12-22 10:08:18,419 INFO L78 Accepts]: Start accepts. Automaton has 1765 states and 2805 transitions. Word has length 77 [2020-12-22 10:08:18,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:18,420 INFO L481 AbstractCegarLoop]: Abstraction has 1765 states and 2805 transitions. [2020-12-22 10:08:18,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:18,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1765 states and 2805 transitions. [2020-12-22 10:08:18,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:08:18,423 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:18,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:08:18,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:08:18,424 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:18,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:18,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1153858295, now seen corresponding path program 1 times [2020-12-22 10:08:18,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:18,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393167241] [2020-12-22 10:08:18,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:18,571 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 10:08:18,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393167241] [2020-12-22 10:08:18,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:18,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:18,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078684248] [2020-12-22 10:08:18,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:18,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:18,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:18,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:18,577 INFO L87 Difference]: Start difference. First operand 1765 states and 2805 transitions. Second operand 3 states. [2020-12-22 10:08:18,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:18,643 INFO L93 Difference]: Finished difference Result 2169 states and 3447 transitions. [2020-12-22 10:08:18,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:18,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:08:18,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:18,657 INFO L225 Difference]: With dead ends: 2169 [2020-12-22 10:08:18,658 INFO L226 Difference]: Without dead ends: 1955 [2020-12-22 10:08:18,659 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 10:08:18,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1955 states. [2020-12-22 10:08:18,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1955 to 1953. [2020-12-22 10:08:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1953 states. [2020-12-22 10:08:18,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1953 states to 1953 states and 3101 transitions. [2020-12-22 10:08:18,729 INFO L78 Accepts]: Start accepts. Automaton has 1953 states and 3101 transitions. Word has length 77 [2020-12-22 10:08:18,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:18,729 INFO L481 AbstractCegarLoop]: Abstraction has 1953 states and 3101 transitions. [2020-12-22 10:08:18,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:18,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1953 states and 3101 transitions. [2020-12-22 10:08:18,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:08:18,731 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:18,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:08:18,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 10:08:18,731 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:18,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:18,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1546824319, now seen corresponding path program 1 times [2020-12-22 10:08:18,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:18,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219799841] [2020-12-22 10:08:18,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:18,832 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 10:08:18,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219799841] [2020-12-22 10:08:18,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:18,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:18,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446491221] [2020-12-22 10:08:18,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:18,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:18,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:18,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:18,835 INFO L87 Difference]: Start difference. First operand 1953 states and 3101 transitions. Second operand 3 states. [2020-12-22 10:08:18,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:18,905 INFO L93 Difference]: Finished difference Result 2709 states and 4295 transitions. [2020-12-22 10:08:18,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:18,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:08:18,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:18,922 INFO L225 Difference]: With dead ends: 2709 [2020-12-22 10:08:18,922 INFO L226 Difference]: Without dead ends: 2307 [2020-12-22 10:08:18,924 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 10:08:18,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2020-12-22 10:08:18,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 2305. [2020-12-22 10:08:19,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-12-22 10:08:19,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3649 transitions. [2020-12-22 10:08:19,011 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3649 transitions. Word has length 77 [2020-12-22 10:08:19,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:19,013 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 3649 transitions. [2020-12-22 10:08:19,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:19,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3649 transitions. [2020-12-22 10:08:19,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:08:19,014 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:19,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:08:19,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 10:08:19,020 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:19,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:19,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1884617461, now seen corresponding path program 1 times [2020-12-22 10:08:19,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:19,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130361884] [2020-12-22 10:08:19,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:19,143 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 10:08:19,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130361884] [2020-12-22 10:08:19,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:19,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:19,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705950163] [2020-12-22 10:08:19,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:19,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:19,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:19,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:19,148 INFO L87 Difference]: Start difference. First operand 2305 states and 3649 transitions. Second operand 3 states. [2020-12-22 10:08:19,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:19,305 INFO L93 Difference]: Finished difference Result 3717 states and 5859 transitions. [2020-12-22 10:08:19,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:19,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 10:08:19,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:19,324 INFO L225 Difference]: With dead ends: 3717 [2020-12-22 10:08:19,324 INFO L226 Difference]: Without dead ends: 2963 [2020-12-22 10:08:19,326 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 10:08:19,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-12-22 10:08:19,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2961. [2020-12-22 10:08:19,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2961 states. [2020-12-22 10:08:19,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2961 states to 2961 states and 4657 transitions. [2020-12-22 10:08:19,439 INFO L78 Accepts]: Start accepts. Automaton has 2961 states and 4657 transitions. Word has length 77 [2020-12-22 10:08:19,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:19,440 INFO L481 AbstractCegarLoop]: Abstraction has 2961 states and 4657 transitions. [2020-12-22 10:08:19,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:19,440 INFO L276 IsEmpty]: Start isEmpty. Operand 2961 states and 4657 transitions. [2020-12-22 10:08:19,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 10:08:19,441 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:19,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:08:19,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 10:08:19,442 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:19,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:19,442 INFO L82 PathProgramCache]: Analyzing trace with hash -2001711063, now seen corresponding path program 1 times [2020-12-22 10:08:19,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:19,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824241840] [2020-12-22 10:08:19,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:19,564 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 10:08:19,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824241840] [2020-12-22 10:08:19,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:19,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:08:19,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311293426] [2020-12-22 10:08:19,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:08:19,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:19,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:08:19,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:08:19,566 INFO L87 Difference]: Start difference. First operand 2961 states and 4657 transitions. Second operand 8 states. [2020-12-22 10:08:20,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:20,625 INFO L93 Difference]: Finished difference Result 19881 states and 30973 transitions. [2020-12-22 10:08:20,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 10:08:20,626 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-12-22 10:08:20,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:20,743 INFO L225 Difference]: With dead ends: 19881 [2020-12-22 10:08:20,743 INFO L226 Difference]: Without dead ends: 18471 [2020-12-22 10:08:20,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-12-22 10:08:20,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18471 states. [2020-12-22 10:08:21,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18471 to 4369. [2020-12-22 10:08:21,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4369 states. [2020-12-22 10:08:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4369 states to 4369 states and 6785 transitions. [2020-12-22 10:08:21,174 INFO L78 Accepts]: Start accepts. Automaton has 4369 states and 6785 transitions. Word has length 77 [2020-12-22 10:08:21,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:21,174 INFO L481 AbstractCegarLoop]: Abstraction has 4369 states and 6785 transitions. [2020-12-22 10:08:21,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:08:21,174 INFO L276 IsEmpty]: Start isEmpty. Operand 4369 states and 6785 transitions. [2020-12-22 10:08:21,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:08:21,175 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:21,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:08:21,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 10:08:21,178 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:21,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:21,179 INFO L82 PathProgramCache]: Analyzing trace with hash -914675591, now seen corresponding path program 1 times [2020-12-22 10:08:21,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:21,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666747507] [2020-12-22 10:08:21,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:21,275 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 10:08:21,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666747507] [2020-12-22 10:08:21,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:21,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:21,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661985010] [2020-12-22 10:08:21,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:21,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:21,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:21,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:21,280 INFO L87 Difference]: Start difference. First operand 4369 states and 6785 transitions. Second operand 3 states. [2020-12-22 10:08:21,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:21,750 INFO L93 Difference]: Finished difference Result 9653 states and 14819 transitions. [2020-12-22 10:08:21,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:21,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 10:08:21,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:21,772 INFO L225 Difference]: With dead ends: 9653 [2020-12-22 10:08:21,772 INFO L226 Difference]: Without dead ends: 6835 [2020-12-22 10:08:21,778 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 10:08:21,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6835 states. [2020-12-22 10:08:22,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6835 to 6769. [2020-12-22 10:08:22,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6769 states. [2020-12-22 10:08:22,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 10273 transitions. [2020-12-22 10:08:22,221 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 10273 transitions. Word has length 79 [2020-12-22 10:08:22,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:22,221 INFO L481 AbstractCegarLoop]: Abstraction has 6769 states and 10273 transitions. [2020-12-22 10:08:22,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:22,222 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 10273 transitions. [2020-12-22 10:08:22,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 10:08:22,223 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:22,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:08:22,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 10:08:22,223 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:22,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:22,224 INFO L82 PathProgramCache]: Analyzing trace with hash -848182079, now seen corresponding path program 1 times [2020-12-22 10:08:22,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:22,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956057540] [2020-12-22 10:08:22,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:08:22,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956057540] [2020-12-22 10:08:22,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:22,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:08:22,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714095976] [2020-12-22 10:08:22,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:08:22,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:22,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:08:22,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:08:22,475 INFO L87 Difference]: Start difference. First operand 6769 states and 10273 transitions. Second operand 8 states. [2020-12-22 10:08:23,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:23,120 INFO L93 Difference]: Finished difference Result 11989 states and 18083 transitions. [2020-12-22 10:08:23,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:08:23,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-12-22 10:08:23,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:23,139 INFO L225 Difference]: With dead ends: 11989 [2020-12-22 10:08:23,139 INFO L226 Difference]: Without dead ends: 6771 [2020-12-22 10:08:23,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-22 10:08:23,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6771 states. [2020-12-22 10:08:23,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6771 to 6769. [2020-12-22 10:08:23,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6769 states. [2020-12-22 10:08:23,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 10209 transitions. [2020-12-22 10:08:23,632 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 10209 transitions. Word has length 79 [2020-12-22 10:08:23,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:23,633 INFO L481 AbstractCegarLoop]: Abstraction has 6769 states and 10209 transitions. [2020-12-22 10:08:23,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:08:23,633 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 10209 transitions. [2020-12-22 10:08:23,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 10:08:23,634 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:23,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:08:23,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 10:08:23,635 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:23,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:23,636 INFO L82 PathProgramCache]: Analyzing trace with hash -938563623, now seen corresponding path program 1 times [2020-12-22 10:08:23,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:23,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276965854] [2020-12-22 10:08:23,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:23,749 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 10:08:23,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276965854] [2020-12-22 10:08:23,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:23,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:08:23,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700077319] [2020-12-22 10:08:23,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 10:08:23,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:23,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 10:08:23,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 10:08:23,752 INFO L87 Difference]: Start difference. First operand 6769 states and 10209 transitions. Second operand 6 states. [2020-12-22 10:08:24,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:24,280 INFO L93 Difference]: Finished difference Result 11987 states and 17954 transitions. [2020-12-22 10:08:24,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 10:08:24,281 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-12-22 10:08:24,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:24,299 INFO L225 Difference]: With dead ends: 11987 [2020-12-22 10:08:24,299 INFO L226 Difference]: Without dead ends: 6769 [2020-12-22 10:08:24,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:08:24,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6769 states. [2020-12-22 10:08:24,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6769 to 6769. [2020-12-22 10:08:24,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6769 states. [2020-12-22 10:08:24,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 10145 transitions. [2020-12-22 10:08:24,768 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 10145 transitions. Word has length 80 [2020-12-22 10:08:24,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:24,768 INFO L481 AbstractCegarLoop]: Abstraction has 6769 states and 10145 transitions. [2020-12-22 10:08:24,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 10:08:24,768 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 10145 transitions. [2020-12-22 10:08:24,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 10:08:24,769 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:24,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:08:24,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 10:08:24,770 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:24,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:24,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1639628201, now seen corresponding path program 1 times [2020-12-22 10:08:24,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:24,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527718870] [2020-12-22 10:08:24,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:24,917 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 10:08:24,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527718870] [2020-12-22 10:08:24,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:24,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:08:24,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003841336] [2020-12-22 10:08:24,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:08:24,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:24,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:08:24,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:08:24,920 INFO L87 Difference]: Start difference. First operand 6769 states and 10145 transitions. Second operand 8 states. [2020-12-22 10:08:26,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:26,010 INFO L93 Difference]: Finished difference Result 10675 states and 15788 transitions. [2020-12-22 10:08:26,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:08:26,010 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-12-22 10:08:26,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:26,037 INFO L225 Difference]: With dead ends: 10675 [2020-12-22 10:08:26,037 INFO L226 Difference]: Without dead ends: 10673 [2020-12-22 10:08:26,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:08:26,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10673 states. [2020-12-22 10:08:26,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10673 to 6961. [2020-12-22 10:08:26,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6961 states. [2020-12-22 10:08:26,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6961 states to 6961 states and 10305 transitions. [2020-12-22 10:08:26,712 INFO L78 Accepts]: Start accepts. Automaton has 6961 states and 10305 transitions. Word has length 80 [2020-12-22 10:08:26,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:26,712 INFO L481 AbstractCegarLoop]: Abstraction has 6961 states and 10305 transitions. [2020-12-22 10:08:26,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:08:26,713 INFO L276 IsEmpty]: Start isEmpty. Operand 6961 states and 10305 transitions. [2020-12-22 10:08:26,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 10:08:26,717 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:26,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:08:26,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 10:08:26,718 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:26,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:26,718 INFO L82 PathProgramCache]: Analyzing trace with hash 492740282, now seen corresponding path program 1 times [2020-12-22 10:08:26,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:26,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242030634] [2020-12-22 10:08:26,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:26,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:08:26,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242030634] [2020-12-22 10:08:26,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:26,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:08:26,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614939686] [2020-12-22 10:08:26,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:26,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:26,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:26,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:26,806 INFO L87 Difference]: Start difference. First operand 6961 states and 10305 transitions. Second operand 3 states. [2020-12-22 10:08:27,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:27,521 INFO L93 Difference]: Finished difference Result 12472 states and 18375 transitions. [2020-12-22 10:08:27,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:27,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 10:08:27,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:27,542 INFO L225 Difference]: With dead ends: 12472 [2020-12-22 10:08:27,543 INFO L226 Difference]: Without dead ends: 9461 [2020-12-22 10:08:27,550 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 10:08:27,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9461 states. [2020-12-22 10:08:28,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9461 to 9459. [2020-12-22 10:08:28,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9459 states. [2020-12-22 10:08:28,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9459 states to 9459 states and 13859 transitions. [2020-12-22 10:08:28,289 INFO L78 Accepts]: Start accepts. Automaton has 9459 states and 13859 transitions. Word has length 81 [2020-12-22 10:08:28,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:28,290 INFO L481 AbstractCegarLoop]: Abstraction has 9459 states and 13859 transitions. [2020-12-22 10:08:28,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:28,290 INFO L276 IsEmpty]: Start isEmpty. Operand 9459 states and 13859 transitions. [2020-12-22 10:08:28,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 10:08:28,294 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:28,294 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:08:28,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 10:08:28,295 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:28,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:28,295 INFO L82 PathProgramCache]: Analyzing trace with hash 2026739429, now seen corresponding path program 1 times [2020-12-22 10:08:28,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:28,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887886983] [2020-12-22 10:08:28,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:28,392 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:08:28,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887886983] [2020-12-22 10:08:28,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:28,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:08:28,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18231403] [2020-12-22 10:08:28,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:08:28,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:28,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:08:28,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:08:28,395 INFO L87 Difference]: Start difference. First operand 9459 states and 13859 transitions. Second operand 3 states. [2020-12-22 10:08:34,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:34,697 INFO L93 Difference]: Finished difference Result 12467 states and 18691 transitions. [2020-12-22 10:08:34,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:08:34,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 10:08:34,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:34,723 INFO L225 Difference]: With dead ends: 12467 [2020-12-22 10:08:34,723 INFO L226 Difference]: Without dead ends: 10963 [2020-12-22 10:08:34,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 10:08:34,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10963 states. [2020-12-22 10:08:35,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10963 to 10961. [2020-12-22 10:08:35,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10961 states. [2020-12-22 10:08:35,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10961 states to 10961 states and 15830 transitions. [2020-12-22 10:08:35,446 INFO L78 Accepts]: Start accepts. Automaton has 10961 states and 15830 transitions. Word has length 105 [2020-12-22 10:08:35,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:35,446 INFO L481 AbstractCegarLoop]: Abstraction has 10961 states and 15830 transitions. [2020-12-22 10:08:35,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:08:35,446 INFO L276 IsEmpty]: Start isEmpty. Operand 10961 states and 15830 transitions. [2020-12-22 10:08:35,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:08:35,453 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:35,453 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:08:35,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 10:08:35,454 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:35,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:35,454 INFO L82 PathProgramCache]: Analyzing trace with hash 651816077, now seen corresponding path program 1 times [2020-12-22 10:08:35,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:35,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46877756] [2020-12-22 10:08:35,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:35,604 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 10:08:35,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46877756] [2020-12-22 10:08:35,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:35,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:08:35,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267874748] [2020-12-22 10:08:35,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:08:35,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:35,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:08:35,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:08:35,606 INFO L87 Difference]: Start difference. First operand 10961 states and 15830 transitions. Second operand 8 states. [2020-12-22 10:08:38,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:38,176 INFO L93 Difference]: Finished difference Result 59967 states and 86365 transitions. [2020-12-22 10:08:38,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:08:38,177 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:08:38,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:38,278 INFO L225 Difference]: With dead ends: 59967 [2020-12-22 10:08:38,278 INFO L226 Difference]: Without dead ends: 52061 [2020-12-22 10:08:38,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:08:38,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52061 states. [2020-12-22 10:08:39,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52061 to 18865. [2020-12-22 10:08:39,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18865 states. [2020-12-22 10:08:39,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18865 states to 18865 states and 27126 transitions. [2020-12-22 10:08:39,786 INFO L78 Accepts]: Start accepts. Automaton has 18865 states and 27126 transitions. Word has length 111 [2020-12-22 10:08:39,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:39,786 INFO L481 AbstractCegarLoop]: Abstraction has 18865 states and 27126 transitions. [2020-12-22 10:08:39,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:08:39,787 INFO L276 IsEmpty]: Start isEmpty. Operand 18865 states and 27126 transitions. [2020-12-22 10:08:39,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:08:39,794 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:39,794 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:08:39,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 10:08:39,794 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:39,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:39,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1116966739, now seen corresponding path program 1 times [2020-12-22 10:08:39,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:39,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886950648] [2020-12-22 10:08:39,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:39,953 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 10:08:39,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886950648] [2020-12-22 10:08:39,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:39,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:08:39,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522041332] [2020-12-22 10:08:39,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:08:39,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:39,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:08:39,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:08:39,959 INFO L87 Difference]: Start difference. First operand 18865 states and 27126 transitions. Second operand 8 states. [2020-12-22 10:08:43,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:43,354 INFO L93 Difference]: Finished difference Result 67871 states and 97661 transitions. [2020-12-22 10:08:43,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:08:43,355 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:08:43,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:43,475 INFO L225 Difference]: With dead ends: 67871 [2020-12-22 10:08:43,475 INFO L226 Difference]: Without dead ends: 59965 [2020-12-22 10:08:43,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:08:43,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59965 states. [2020-12-22 10:08:45,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59965 to 30737. [2020-12-22 10:08:45,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30737 states. [2020-12-22 10:08:45,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30737 states to 30737 states and 43990 transitions. [2020-12-22 10:08:45,879 INFO L78 Accepts]: Start accepts. Automaton has 30737 states and 43990 transitions. Word has length 111 [2020-12-22 10:08:45,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:45,880 INFO L481 AbstractCegarLoop]: Abstraction has 30737 states and 43990 transitions. [2020-12-22 10:08:45,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:08:45,880 INFO L276 IsEmpty]: Start isEmpty. Operand 30737 states and 43990 transitions. [2020-12-22 10:08:45,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:08:45,888 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:45,889 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:08:45,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 10:08:45,889 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:45,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:45,890 INFO L82 PathProgramCache]: Analyzing trace with hash 14673101, now seen corresponding path program 1 times [2020-12-22 10:08:45,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:45,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122051953] [2020-12-22 10:08:45,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:46,055 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 10:08:46,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122051953] [2020-12-22 10:08:46,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:46,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:08:46,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988793296] [2020-12-22 10:08:46,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:08:46,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:46,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:08:46,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:08:46,057 INFO L87 Difference]: Start difference. First operand 30737 states and 43990 transitions. Second operand 8 states. [2020-12-22 10:08:49,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:49,959 INFO L93 Difference]: Finished difference Result 75775 states and 108957 transitions. [2020-12-22 10:08:49,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:08:49,960 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:08:49,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:50,044 INFO L225 Difference]: With dead ends: 75775 [2020-12-22 10:08:50,044 INFO L226 Difference]: Without dead ends: 67869 [2020-12-22 10:08:50,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:08:50,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67869 states. [2020-12-22 10:08:53,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67869 to 38641. [2020-12-22 10:08:53,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38641 states. [2020-12-22 10:08:53,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38641 states to 38641 states and 55286 transitions. [2020-12-22 10:08:53,049 INFO L78 Accepts]: Start accepts. Automaton has 38641 states and 55286 transitions. Word has length 111 [2020-12-22 10:08:53,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:08:53,049 INFO L481 AbstractCegarLoop]: Abstraction has 38641 states and 55286 transitions. [2020-12-22 10:08:53,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:08:53,049 INFO L276 IsEmpty]: Start isEmpty. Operand 38641 states and 55286 transitions. [2020-12-22 10:08:53,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:08:53,058 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:08:53,058 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:08:53,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 10:08:53,058 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:08:53,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:08:53,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1220785939, now seen corresponding path program 1 times [2020-12-22 10:08:53,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:08:53,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192714740] [2020-12-22 10:08:53,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:08:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:08:53,195 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 10:08:53,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192714740] [2020-12-22 10:08:53,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:08:53,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:08:53,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857011810] [2020-12-22 10:08:53,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:08:53,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:08:53,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:08:53,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:08:53,197 INFO L87 Difference]: Start difference. First operand 38641 states and 55286 transitions. Second operand 8 states. [2020-12-22 10:08:58,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:08:58,557 INFO L93 Difference]: Finished difference Result 83679 states and 120253 transitions. [2020-12-22 10:08:58,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:08:58,557 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:08:58,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:08:58,632 INFO L225 Difference]: With dead ends: 83679 [2020-12-22 10:08:58,632 INFO L226 Difference]: Without dead ends: 75773 [2020-12-22 10:08:58,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:08:58,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75773 states. [2020-12-22 10:09:02,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75773 to 46545. [2020-12-22 10:09:02,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46545 states. [2020-12-22 10:09:02,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46545 states to 46545 states and 66582 transitions. [2020-12-22 10:09:02,185 INFO L78 Accepts]: Start accepts. Automaton has 46545 states and 66582 transitions. Word has length 111 [2020-12-22 10:09:02,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:09:02,186 INFO L481 AbstractCegarLoop]: Abstraction has 46545 states and 66582 transitions. [2020-12-22 10:09:02,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:09:02,186 INFO L276 IsEmpty]: Start isEmpty. Operand 46545 states and 66582 transitions. [2020-12-22 10:09:02,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 10:09:02,195 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:09:02,196 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:09:02,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 10:09:02,196 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:09:02,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:09:02,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1653185805, now seen corresponding path program 1 times [2020-12-22 10:09:02,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:09:02,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440599378] [2020-12-22 10:09:02,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:09:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:09:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 10:09:02,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440599378] [2020-12-22 10:09:02,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:09:02,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:09:02,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392618500] [2020-12-22 10:09:02,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:09:02,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:09:02,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:09:02,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:09:02,366 INFO L87 Difference]: Start difference. First operand 46545 states and 66582 transitions. Second operand 8 states. [2020-12-22 10:09:08,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:09:08,275 INFO L93 Difference]: Finished difference Result 91583 states and 131549 transitions. [2020-12-22 10:09:08,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:09:08,275 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-12-22 10:09:08,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:09:08,356 INFO L225 Difference]: With dead ends: 91583 [2020-12-22 10:09:08,357 INFO L226 Difference]: Without dead ends: 83677 [2020-12-22 10:09:08,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:09:08,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83677 states. [2020-12-22 10:09:12,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83677 to 54449. [2020-12-22 10:09:12,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54449 states. [2020-12-22 10:09:12,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54449 states to 54449 states and 77878 transitions. [2020-12-22 10:09:12,650 INFO L78 Accepts]: Start accepts. Automaton has 54449 states and 77878 transitions. Word has length 111 [2020-12-22 10:09:12,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:09:12,651 INFO L481 AbstractCegarLoop]: Abstraction has 54449 states and 77878 transitions. [2020-12-22 10:09:12,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:09:12,651 INFO L276 IsEmpty]: Start isEmpty. Operand 54449 states and 77878 transitions. [2020-12-22 10:09:12,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:09:12,663 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:09:12,663 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:09:12,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 10:09:12,664 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:09:12,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:09:12,664 INFO L82 PathProgramCache]: Analyzing trace with hash -2019174363, now seen corresponding path program 1 times [2020-12-22 10:09:12,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:09:12,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493514138] [2020-12-22 10:09:12,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:09:12,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:09:12,747 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:09:12,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493514138] [2020-12-22 10:09:12,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:09:12,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:09:12,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177350265] [2020-12-22 10:09:12,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:09:12,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:09:12,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:09:12,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:09:12,750 INFO L87 Difference]: Start difference. First operand 54449 states and 77878 transitions. Second operand 3 states. [2020-12-22 10:09:15,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:09:15,626 INFO L93 Difference]: Finished difference Result 90262 states and 129503 transitions. [2020-12-22 10:09:15,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:09:15,626 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-22 10:09:15,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:09:15,659 INFO L225 Difference]: With dead ends: 90262 [2020-12-22 10:09:15,659 INFO L226 Difference]: Without dead ends: 38868 [2020-12-22 10:09:15,679 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 10:09:15,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38868 states. [2020-12-22 10:09:18,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38868 to 38866. [2020-12-22 10:09:18,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38866 states. [2020-12-22 10:09:18,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38866 states to 38866 states and 55644 transitions. [2020-12-22 10:09:18,709 INFO L78 Accepts]: Start accepts. Automaton has 38866 states and 55644 transitions. Word has length 113 [2020-12-22 10:09:18,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:09:18,709 INFO L481 AbstractCegarLoop]: Abstraction has 38866 states and 55644 transitions. [2020-12-22 10:09:18,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:09:18,709 INFO L276 IsEmpty]: Start isEmpty. Operand 38866 states and 55644 transitions. [2020-12-22 10:09:18,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 10:09:18,717 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:09:18,717 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:09:18,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 10:09:18,717 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:09:18,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:09:18,718 INFO L82 PathProgramCache]: Analyzing trace with hash -21629902, now seen corresponding path program 1 times [2020-12-22 10:09:18,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:09:18,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555017707] [2020-12-22 10:09:18,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:09:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:09:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 10:09:18,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555017707] [2020-12-22 10:09:18,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:09:18,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:09:18,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074452926] [2020-12-22 10:09:18,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:09:18,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:09:18,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:09:18,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:09:18,856 INFO L87 Difference]: Start difference. First operand 38866 states and 55644 transitions. Second operand 8 states. [2020-12-22 10:09:24,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:09:24,018 INFO L93 Difference]: Finished difference Result 71904 states and 103267 transitions. [2020-12-22 10:09:24,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 10:09:24,019 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 113 [2020-12-22 10:09:24,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:09:24,076 INFO L225 Difference]: With dead ends: 71904 [2020-12-22 10:09:24,076 INFO L226 Difference]: Without dead ends: 66398 [2020-12-22 10:09:24,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 10:09:24,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66398 states. [2020-12-22 10:09:27,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66398 to 44370. [2020-12-22 10:09:27,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44370 states. [2020-12-22 10:09:27,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44370 states to 44370 states and 63516 transitions. [2020-12-22 10:09:27,570 INFO L78 Accepts]: Start accepts. Automaton has 44370 states and 63516 transitions. Word has length 113 [2020-12-22 10:09:27,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:09:27,571 INFO L481 AbstractCegarLoop]: Abstraction has 44370 states and 63516 transitions. [2020-12-22 10:09:27,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:09:27,571 INFO L276 IsEmpty]: Start isEmpty. Operand 44370 states and 63516 transitions. [2020-12-22 10:09:27,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 10:09:27,576 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:09:27,577 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:09:27,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 10:09:27,577 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:09:27,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:09:27,577 INFO L82 PathProgramCache]: Analyzing trace with hash 254785081, now seen corresponding path program 1 times [2020-12-22 10:09:27,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:09:27,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6478320] [2020-12-22 10:09:27,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:09:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:09:27,925 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:09:27,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6478320] [2020-12-22 10:09:27,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451114753] [2020-12-22 10:09:27,926 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 10:09:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:09:28,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 10:09:28,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:09:28,825 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 10:09:28,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:09:28,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4] total 16 [2020-12-22 10:09:28,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586290256] [2020-12-22 10:09:28,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 10:09:28,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:09:28,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 10:09:28,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-12-22 10:09:28,828 INFO L87 Difference]: Start difference. First operand 44370 states and 63516 transitions. Second operand 16 states. [2020-12-22 10:09:29,853 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-22 10:09:30,031 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-12-22 10:09:30,438 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-12-22 10:09:34,749 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-22 10:09:34,972 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-12-22 10:09:43,042 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-12-22 10:09:58,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:09:58,283 INFO L93 Difference]: Finished difference Result 310311 states and 437751 transitions. [2020-12-22 10:09:58,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-12-22 10:09:58,285 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 114 [2020-12-22 10:09:58,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:09:59,017 INFO L225 Difference]: With dead ends: 310311 [2020-12-22 10:09:59,018 INFO L226 Difference]: Without dead ends: 269029 [2020-12-22 10:09:59,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2043 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1154, Invalid=5008, Unknown=0, NotChecked=0, Total=6162 [2020-12-22 10:09:59,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269029 states. [2020-12-22 10:10:13,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269029 to 136063. [2020-12-22 10:10:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136063 states. [2020-12-22 10:10:14,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136063 states to 136063 states and 189754 transitions. [2020-12-22 10:10:14,065 INFO L78 Accepts]: Start accepts. Automaton has 136063 states and 189754 transitions. Word has length 114 [2020-12-22 10:10:14,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:10:14,065 INFO L481 AbstractCegarLoop]: Abstraction has 136063 states and 189754 transitions. [2020-12-22 10:10:14,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 10:10:14,066 INFO L276 IsEmpty]: Start isEmpty. Operand 136063 states and 189754 transitions. [2020-12-22 10:10:14,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-22 10:10:14,082 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:10:14,082 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:10:14,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 10:10:14,297 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:10:14,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:10:14,298 INFO L82 PathProgramCache]: Analyzing trace with hash -725866966, now seen corresponding path program 1 times [2020-12-22 10:10:14,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:10:14,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633982395] [2020-12-22 10:10:14,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:10:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:14,964 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:10:14,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633982395] [2020-12-22 10:10:14,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130806571] [2020-12-22 10:10:14,965 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 10:10:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:10:15,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 10:10:15,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:10:15,403 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 10:10:15,774 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:10:15,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:10:15,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 21 [2020-12-22 10:10:15,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033845112] [2020-12-22 10:10:15,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-22 10:10:15,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:10:15,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-22 10:10:15,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-12-22 10:10:15,777 INFO L87 Difference]: Start difference. First operand 136063 states and 189754 transitions. Second operand 22 states. [2020-12-22 10:10:15,910 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:10:16,360 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:10:16,775 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-12-22 10:10:18,359 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:10:18,595 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-12-22 10:10:18,899 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-12-22 10:10:19,624 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:10:19,824 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-12-22 10:10:20,137 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-12-22 10:10:22,494 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:10:23,388 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:10:23,657 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:10:24,918 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:10:25,065 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:10:25,227 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:10:25,856 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:10:26,482 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:10:27,571 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:10:27,960 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 10:10:29,391 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:10:30,366 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:10:30,800 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-12-22 10:10:30,957 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:10:31,576 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:10:32,467 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:10:32,770 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 10:10:34,135 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:10:35,863 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:10:36,483 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:10:36,985 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:10:44,748 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-12-22 10:10:44,886 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:10:45,086 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:10:45,423 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:10:45,596 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:10:45,835 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-12-22 10:10:46,136 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-12-22 10:10:46,291 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:10:46,511 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 54 [2020-12-22 10:10:46,721 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2020-12-22 10:10:47,100 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2020-12-22 10:10:47,461 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-12-22 10:10:47,640 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:10:47,859 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-12-22 10:10:48,077 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:10:48,343 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-12-22 10:10:48,675 WARN L197 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-12-22 10:10:48,838 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:10:49,086 WARN L197 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2020-12-22 10:10:49,304 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-12-22 10:10:49,973 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-12-22 10:10:50,285 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-22 10:10:50,456 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:10:50,741 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-12-22 10:10:50,878 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:10:51,397 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-12-22 10:10:51,658 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:10:52,229 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-12-22 10:10:52,378 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:10:52,581 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:10:52,882 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-12-22 10:10:53,177 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:11:07,885 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-12-22 10:11:08,228 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:11:08,406 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:11:08,943 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:11:09,150 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:11:09,371 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:11:10,380 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 10:11:10,678 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:11:11,034 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:11:11,185 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-12-22 10:11:11,416 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:11:11,621 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-12-22 10:11:12,006 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-12-22 10:11:12,657 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:11:12,817 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:11:13,155 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 10:11:14,873 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 10:11:15,202 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-12-22 10:11:15,642 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 10:11:15,943 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-12-22 10:11:16,578 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:11:19,100 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-22 10:11:40,650 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:11:41,763 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:11:42,207 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-12-22 10:11:42,390 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 10:11:43,571 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-12-22 10:11:47,108 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-12-22 10:11:47,283 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-12-22 10:11:47,508 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53