/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/locks/test_locks_11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:21:52,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:21:52,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:21:52,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:21:52,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:21:52,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:21:52,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:21:52,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:21:52,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:21:52,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:21:52,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:21:52,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:21:52,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:21:52,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:21:52,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:21:52,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:21:52,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:21:52,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:21:52,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:21:52,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:21:52,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:21:52,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:21:52,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:21:52,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:21:52,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:21:52,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:21:52,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:21:52,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:21:52,365 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:21:52,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:21:52,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:21:52,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:21:52,376 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:21:52,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:21:52,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:21:52,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:21:52,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:21:52,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:21:52,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:21:52,377 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:21:52,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:21:52,378 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:21:52,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:21:52,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:21:52,378 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:21:52,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:21:52,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:21:52,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:21:52,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:21:52,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:21:52,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:21:52,380 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:21:52,693 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:21:52,719 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:21:52,723 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:21:52,724 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:21:52,725 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:21:52,726 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_11.c [2020-07-07 13:21:52,794 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73aa6d7e7/c6057fc69b5144bb8961d6da398b3d1e/FLAGc0b3846f0 [2020-07-07 13:21:53,303 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:21:53,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_11.c [2020-07-07 13:21:53,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73aa6d7e7/c6057fc69b5144bb8961d6da398b3d1e/FLAGc0b3846f0 [2020-07-07 13:21:53,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73aa6d7e7/c6057fc69b5144bb8961d6da398b3d1e [2020-07-07 13:21:53,645 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:21:53,647 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:21:53,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:21:53,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:21:53,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:21:53,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:21:53" (1/1) ... [2020-07-07 13:21:53,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a9c17cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:53, skipping insertion in model container [2020-07-07 13:21:53,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:21:53" (1/1) ... [2020-07-07 13:21:53,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:21:53,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:21:53,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:21:53,884 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:21:53,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:21:53,933 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:21:53,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:53 WrapperNode [2020-07-07 13:21:53,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:21:53,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:21:53,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:21:53,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:21:54,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:53" (1/1) ... [2020-07-07 13:21:54,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:53" (1/1) ... [2020-07-07 13:21:54,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:53" (1/1) ... [2020-07-07 13:21:54,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:53" (1/1) ... [2020-07-07 13:21:54,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:53" (1/1) ... [2020-07-07 13:21:54,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:53" (1/1) ... [2020-07-07 13:21:54,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:53" (1/1) ... [2020-07-07 13:21:54,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:21:54,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:21:54,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:21:54,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:21:54,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:53" (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 [2020-07-07 13:21:54,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:21:54,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:21:54,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:21:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:21:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:21:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:21:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:21:54,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:21:54,611 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:21:54,612 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 13:21:54,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:21:54 BoogieIcfgContainer [2020-07-07 13:21:54,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:21:54,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:21:54,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:21:54,623 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:21:54,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:21:53" (1/3) ... [2020-07-07 13:21:54,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e125ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:21:54, skipping insertion in model container [2020-07-07 13:21:54,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:21:53" (2/3) ... [2020-07-07 13:21:54,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e125ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:21:54, skipping insertion in model container [2020-07-07 13:21:54,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:21:54" (3/3) ... [2020-07-07 13:21:54,627 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_11.c [2020-07-07 13:21:54,639 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:21:54,648 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:21:54,661 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:21:54,682 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:21:54,683 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:21:54,683 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:21:54,683 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:21:54,683 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:21:54,683 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:21:54,683 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:21:54,684 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:21:54,701 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2020-07-07 13:21:54,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-07 13:21:54,715 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:54,717 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] [2020-07-07 13:21:54,717 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:54,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:54,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1546178992, now seen corresponding path program 1 times [2020-07-07 13:21:54,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:54,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059476640] [2020-07-07 13:21:54,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:54,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:54,982 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:54,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059476640] [2020-07-07 13:21:54,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:54,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:54,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943303577] [2020-07-07 13:21:54,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:54,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:55,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:55,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:55,013 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 3 states. [2020-07-07 13:21:55,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:55,141 INFO L93 Difference]: Finished difference Result 279 states and 384 transitions. [2020-07-07 13:21:55,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:55,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-07-07 13:21:55,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:55,163 INFO L225 Difference]: With dead ends: 279 [2020-07-07 13:21:55,164 INFO L226 Difference]: Without dead ends: 192 [2020-07-07 13:21:55,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:55,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-07-07 13:21:55,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2020-07-07 13:21:55,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-07-07 13:21:55,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 252 transitions. [2020-07-07 13:21:55,243 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 252 transitions. Word has length 79 [2020-07-07 13:21:55,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:55,244 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 252 transitions. [2020-07-07 13:21:55,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:55,245 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 252 transitions. [2020-07-07 13:21:55,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-07-07 13:21:55,251 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:55,251 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] [2020-07-07 13:21:55,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:21:55,252 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:55,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:55,254 INFO L82 PathProgramCache]: Analyzing trace with hash 687152074, now seen corresponding path program 1 times [2020-07-07 13:21:55,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:55,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583367506] [2020-07-07 13:21:55,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:55,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:55,375 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:55,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583367506] [2020-07-07 13:21:55,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:55,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:55,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691547673] [2020-07-07 13:21:55,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:55,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:55,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:55,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:55,379 INFO L87 Difference]: Start difference. First operand 190 states and 252 transitions. Second operand 3 states. [2020-07-07 13:21:55,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:55,455 INFO L93 Difference]: Finished difference Result 466 states and 650 transitions. [2020-07-07 13:21:55,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:55,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-07-07 13:21:55,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:55,460 INFO L225 Difference]: With dead ends: 466 [2020-07-07 13:21:55,460 INFO L226 Difference]: Without dead ends: 325 [2020-07-07 13:21:55,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:55,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-07-07 13:21:55,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2020-07-07 13:21:55,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-07-07 13:21:55,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 442 transitions. [2020-07-07 13:21:55,533 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 442 transitions. Word has length 80 [2020-07-07 13:21:55,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:55,534 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 442 transitions. [2020-07-07 13:21:55,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:55,534 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 442 transitions. [2020-07-07 13:21:55,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-07-07 13:21:55,537 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:55,537 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] [2020-07-07 13:21:55,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:21:55,537 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:55,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:55,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1261830773, now seen corresponding path program 1 times [2020-07-07 13:21:55,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:55,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696347340] [2020-07-07 13:21:55,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:55,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:55,622 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:55,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696347340] [2020-07-07 13:21:55,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:55,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:55,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900860539] [2020-07-07 13:21:55,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:55,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:55,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:55,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:55,625 INFO L87 Difference]: Start difference. First operand 323 states and 442 transitions. Second operand 3 states. [2020-07-07 13:21:55,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:55,667 INFO L93 Difference]: Finished difference Result 397 states and 552 transitions. [2020-07-07 13:21:55,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:55,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-07-07 13:21:55,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:55,671 INFO L225 Difference]: With dead ends: 397 [2020-07-07 13:21:55,672 INFO L226 Difference]: Without dead ends: 395 [2020-07-07 13:21:55,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:55,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-07-07 13:21:55,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 323. [2020-07-07 13:21:55,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-07-07 13:21:55,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 440 transitions. [2020-07-07 13:21:55,706 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 440 transitions. Word has length 80 [2020-07-07 13:21:55,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:55,706 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 440 transitions. [2020-07-07 13:21:55,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:55,707 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 440 transitions. [2020-07-07 13:21:55,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-07-07 13:21:55,709 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:55,709 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] [2020-07-07 13:21:55,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:21:55,710 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:55,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:55,710 INFO L82 PathProgramCache]: Analyzing trace with hash 397182858, now seen corresponding path program 1 times [2020-07-07 13:21:55,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:55,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477712723] [2020-07-07 13:21:55,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:55,786 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:55,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477712723] [2020-07-07 13:21:55,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:55,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:55,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698307464] [2020-07-07 13:21:55,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:55,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:55,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:55,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:55,789 INFO L87 Difference]: Start difference. First operand 323 states and 440 transitions. Second operand 3 states. [2020-07-07 13:21:55,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:55,825 INFO L93 Difference]: Finished difference Result 395 states and 546 transitions. [2020-07-07 13:21:55,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:55,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-07-07 13:21:55,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:55,829 INFO L225 Difference]: With dead ends: 395 [2020-07-07 13:21:55,829 INFO L226 Difference]: Without dead ends: 393 [2020-07-07 13:21:55,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:55,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-07-07 13:21:55,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 323. [2020-07-07 13:21:55,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-07-07 13:21:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 438 transitions. [2020-07-07 13:21:55,856 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 438 transitions. Word has length 81 [2020-07-07 13:21:55,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:55,857 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 438 transitions. [2020-07-07 13:21:55,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:55,857 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 438 transitions. [2020-07-07 13:21:55,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-07-07 13:21:55,860 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:55,860 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] [2020-07-07 13:21:55,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:21:55,860 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:55,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:55,861 INFO L82 PathProgramCache]: Analyzing trace with hash -172878236, now seen corresponding path program 1 times [2020-07-07 13:21:55,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:55,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891937962] [2020-07-07 13:21:55,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:55,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:55,922 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:55,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891937962] [2020-07-07 13:21:55,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:55,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:55,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990539603] [2020-07-07 13:21:55,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:55,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:55,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:55,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:55,926 INFO L87 Difference]: Start difference. First operand 323 states and 438 transitions. Second operand 3 states. [2020-07-07 13:21:55,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:55,988 INFO L93 Difference]: Finished difference Result 859 states and 1200 transitions. [2020-07-07 13:21:55,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:55,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-07-07 13:21:55,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:55,994 INFO L225 Difference]: With dead ends: 859 [2020-07-07 13:21:55,994 INFO L226 Difference]: Without dead ends: 585 [2020-07-07 13:21:56,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:56,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-07-07 13:21:56,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 583. [2020-07-07 13:21:56,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2020-07-07 13:21:56,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 802 transitions. [2020-07-07 13:21:56,046 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 802 transitions. Word has length 81 [2020-07-07 13:21:56,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:56,046 INFO L479 AbstractCegarLoop]: Abstraction has 583 states and 802 transitions. [2020-07-07 13:21:56,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:56,047 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 802 transitions. [2020-07-07 13:21:56,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-07 13:21:56,051 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:56,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:56,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:21:56,052 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:56,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:56,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1064013698, now seen corresponding path program 1 times [2020-07-07 13:21:56,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:56,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081418004] [2020-07-07 13:21:56,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:56,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:56,163 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:56,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081418004] [2020-07-07 13:21:56,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:56,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:56,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259307470] [2020-07-07 13:21:56,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:56,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:56,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:56,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:56,167 INFO L87 Difference]: Start difference. First operand 583 states and 802 transitions. Second operand 3 states. [2020-07-07 13:21:56,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:56,288 INFO L93 Difference]: Finished difference Result 1627 states and 2276 transitions. [2020-07-07 13:21:56,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:56,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-07-07 13:21:56,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:56,295 INFO L225 Difference]: With dead ends: 1627 [2020-07-07 13:21:56,296 INFO L226 Difference]: Without dead ends: 1093 [2020-07-07 13:21:56,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:56,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2020-07-07 13:21:56,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1091. [2020-07-07 13:21:56,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-07-07 13:21:56,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1506 transitions. [2020-07-07 13:21:56,375 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1506 transitions. Word has length 82 [2020-07-07 13:21:56,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:56,375 INFO L479 AbstractCegarLoop]: Abstraction has 1091 states and 1506 transitions. [2020-07-07 13:21:56,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:56,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1506 transitions. [2020-07-07 13:21:56,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-07 13:21:56,378 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:56,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:56,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 13:21:56,379 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:56,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:56,379 INFO L82 PathProgramCache]: Analyzing trace with hash -637098359, now seen corresponding path program 1 times [2020-07-07 13:21:56,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:56,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489411761] [2020-07-07 13:21:56,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:56,425 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:56,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489411761] [2020-07-07 13:21:56,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:56,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:56,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605774663] [2020-07-07 13:21:56,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:56,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:56,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:56,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:56,428 INFO L87 Difference]: Start difference. First operand 1091 states and 1506 transitions. Second operand 3 states. [2020-07-07 13:21:56,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:56,524 INFO L93 Difference]: Finished difference Result 1343 states and 1876 transitions. [2020-07-07 13:21:56,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:56,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-07-07 13:21:56,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:56,532 INFO L225 Difference]: With dead ends: 1343 [2020-07-07 13:21:56,533 INFO L226 Difference]: Without dead ends: 1341 [2020-07-07 13:21:56,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:56,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-07-07 13:21:56,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1091. [2020-07-07 13:21:56,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-07-07 13:21:56,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1498 transitions. [2020-07-07 13:21:56,610 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1498 transitions. Word has length 82 [2020-07-07 13:21:56,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:56,610 INFO L479 AbstractCegarLoop]: Abstraction has 1091 states and 1498 transitions. [2020-07-07 13:21:56,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:56,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1498 transitions. [2020-07-07 13:21:56,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-07 13:21:56,612 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:56,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:56,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 13:21:56,613 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:56,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:56,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1659922654, now seen corresponding path program 1 times [2020-07-07 13:21:56,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:56,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196589128] [2020-07-07 13:21:56,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:56,680 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:56,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196589128] [2020-07-07 13:21:56,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:56,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:56,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917542357] [2020-07-07 13:21:56,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:56,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:56,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:56,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:56,683 INFO L87 Difference]: Start difference. First operand 1091 states and 1498 transitions. Second operand 3 states. [2020-07-07 13:21:56,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:56,792 INFO L93 Difference]: Finished difference Result 1335 states and 1852 transitions. [2020-07-07 13:21:56,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:56,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-07-07 13:21:56,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:56,800 INFO L225 Difference]: With dead ends: 1335 [2020-07-07 13:21:56,800 INFO L226 Difference]: Without dead ends: 1333 [2020-07-07 13:21:56,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:56,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2020-07-07 13:21:56,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 1091. [2020-07-07 13:21:56,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-07-07 13:21:56,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1490 transitions. [2020-07-07 13:21:56,886 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1490 transitions. Word has length 83 [2020-07-07 13:21:56,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:56,887 INFO L479 AbstractCegarLoop]: Abstraction has 1091 states and 1490 transitions. [2020-07-07 13:21:56,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:56,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1490 transitions. [2020-07-07 13:21:56,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-07 13:21:56,889 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:56,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:56,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 13:21:56,890 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:56,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:56,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1375558424, now seen corresponding path program 1 times [2020-07-07 13:21:56,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:56,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960697410] [2020-07-07 13:21:56,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:56,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:56,942 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:56,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960697410] [2020-07-07 13:21:56,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:56,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:56,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41985433] [2020-07-07 13:21:56,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:56,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:56,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:56,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:56,949 INFO L87 Difference]: Start difference. First operand 1091 states and 1490 transitions. Second operand 3 states. [2020-07-07 13:21:57,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:57,103 INFO L93 Difference]: Finished difference Result 3127 states and 4308 transitions. [2020-07-07 13:21:57,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:57,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-07-07 13:21:57,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:57,115 INFO L225 Difference]: With dead ends: 3127 [2020-07-07 13:21:57,115 INFO L226 Difference]: Without dead ends: 2085 [2020-07-07 13:21:57,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:57,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2085 states. [2020-07-07 13:21:57,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2085 to 2083. [2020-07-07 13:21:57,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2083 states. [2020-07-07 13:21:57,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2834 transitions. [2020-07-07 13:21:57,241 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2834 transitions. Word has length 83 [2020-07-07 13:21:57,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:57,242 INFO L479 AbstractCegarLoop]: Abstraction has 2083 states and 2834 transitions. [2020-07-07 13:21:57,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:57,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2834 transitions. [2020-07-07 13:21:57,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-07 13:21:57,244 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:57,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:57,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 13:21:57,245 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:57,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:57,246 INFO L82 PathProgramCache]: Analyzing trace with hash -146869603, now seen corresponding path program 1 times [2020-07-07 13:21:57,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:57,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110221887] [2020-07-07 13:21:57,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:57,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:57,276 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:57,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110221887] [2020-07-07 13:21:57,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:57,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:57,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587947027] [2020-07-07 13:21:57,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:57,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:57,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:57,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:57,278 INFO L87 Difference]: Start difference. First operand 2083 states and 2834 transitions. Second operand 3 states. [2020-07-07 13:21:57,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:57,414 INFO L93 Difference]: Finished difference Result 2535 states and 3476 transitions. [2020-07-07 13:21:57,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:57,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-07-07 13:21:57,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:57,428 INFO L225 Difference]: With dead ends: 2535 [2020-07-07 13:21:57,428 INFO L226 Difference]: Without dead ends: 2533 [2020-07-07 13:21:57,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:57,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2020-07-07 13:21:57,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2083. [2020-07-07 13:21:57,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2083 states. [2020-07-07 13:21:57,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2083 states to 2083 states and 2818 transitions. [2020-07-07 13:21:57,593 INFO L78 Accepts]: Start accepts. Automaton has 2083 states and 2818 transitions. Word has length 84 [2020-07-07 13:21:57,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:57,594 INFO L479 AbstractCegarLoop]: Abstraction has 2083 states and 2818 transitions. [2020-07-07 13:21:57,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:57,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2083 states and 2818 transitions. [2020-07-07 13:21:57,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-07 13:21:57,596 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:57,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:57,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 13:21:57,597 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:57,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:57,598 INFO L82 PathProgramCache]: Analyzing trace with hash -307116750, now seen corresponding path program 1 times [2020-07-07 13:21:57,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:57,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877513193] [2020-07-07 13:21:57,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:57,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:57,630 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:57,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877513193] [2020-07-07 13:21:57,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:57,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:57,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545272937] [2020-07-07 13:21:57,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:57,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:57,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:57,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:57,632 INFO L87 Difference]: Start difference. First operand 2083 states and 2818 transitions. Second operand 3 states. [2020-07-07 13:21:57,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:57,889 INFO L93 Difference]: Finished difference Result 6055 states and 8228 transitions. [2020-07-07 13:21:57,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:57,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-07-07 13:21:57,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:57,911 INFO L225 Difference]: With dead ends: 6055 [2020-07-07 13:21:57,911 INFO L226 Difference]: Without dead ends: 4021 [2020-07-07 13:21:57,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:57,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2020-07-07 13:21:58,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 4019. [2020-07-07 13:21:58,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4019 states. [2020-07-07 13:21:58,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4019 states to 4019 states and 5394 transitions. [2020-07-07 13:21:58,153 INFO L78 Accepts]: Start accepts. Automaton has 4019 states and 5394 transitions. Word has length 84 [2020-07-07 13:21:58,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:58,154 INFO L479 AbstractCegarLoop]: Abstraction has 4019 states and 5394 transitions. [2020-07-07 13:21:58,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:58,154 INFO L276 IsEmpty]: Start isEmpty. Operand 4019 states and 5394 transitions. [2020-07-07 13:21:58,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-07-07 13:21:58,157 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:58,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:58,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 13:21:58,158 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:58,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:58,159 INFO L82 PathProgramCache]: Analyzing trace with hash -322854350, now seen corresponding path program 1 times [2020-07-07 13:21:58,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:58,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404813994] [2020-07-07 13:21:58,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:58,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:58,193 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:58,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404813994] [2020-07-07 13:21:58,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:58,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:58,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967985908] [2020-07-07 13:21:58,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:58,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:58,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:58,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:58,195 INFO L87 Difference]: Start difference. First operand 4019 states and 5394 transitions. Second operand 3 states. [2020-07-07 13:21:58,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:58,470 INFO L93 Difference]: Finished difference Result 4855 states and 6548 transitions. [2020-07-07 13:21:58,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:58,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-07-07 13:21:58,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:58,496 INFO L225 Difference]: With dead ends: 4855 [2020-07-07 13:21:58,496 INFO L226 Difference]: Without dead ends: 4853 [2020-07-07 13:21:58,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:58,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4853 states. [2020-07-07 13:21:58,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4853 to 4019. [2020-07-07 13:21:58,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4019 states. [2020-07-07 13:21:58,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4019 states to 4019 states and 5362 transitions. [2020-07-07 13:21:58,761 INFO L78 Accepts]: Start accepts. Automaton has 4019 states and 5362 transitions. Word has length 85 [2020-07-07 13:21:58,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:58,762 INFO L479 AbstractCegarLoop]: Abstraction has 4019 states and 5362 transitions. [2020-07-07 13:21:58,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:58,762 INFO L276 IsEmpty]: Start isEmpty. Operand 4019 states and 5362 transitions. [2020-07-07 13:21:58,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-07-07 13:21:58,766 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:58,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:58,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 13:21:58,767 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:58,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:58,767 INFO L82 PathProgramCache]: Analyzing trace with hash -930439220, now seen corresponding path program 1 times [2020-07-07 13:21:58,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:58,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406633612] [2020-07-07 13:21:58,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:58,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:58,873 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:58,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406633612] [2020-07-07 13:21:58,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:58,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:58,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184297697] [2020-07-07 13:21:58,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:58,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:58,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:58,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:58,875 INFO L87 Difference]: Start difference. First operand 4019 states and 5362 transitions. Second operand 3 states. [2020-07-07 13:21:59,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:21:59,319 INFO L93 Difference]: Finished difference Result 11767 states and 15732 transitions. [2020-07-07 13:21:59,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:21:59,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-07-07 13:21:59,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:21:59,357 INFO L225 Difference]: With dead ends: 11767 [2020-07-07 13:21:59,358 INFO L226 Difference]: Without dead ends: 7797 [2020-07-07 13:21:59,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:59,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7797 states. [2020-07-07 13:21:59,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7797 to 7795. [2020-07-07 13:21:59,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7795 states. [2020-07-07 13:21:59,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7795 states to 7795 states and 10290 transitions. [2020-07-07 13:21:59,886 INFO L78 Accepts]: Start accepts. Automaton has 7795 states and 10290 transitions. Word has length 85 [2020-07-07 13:21:59,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:21:59,887 INFO L479 AbstractCegarLoop]: Abstraction has 7795 states and 10290 transitions. [2020-07-07 13:21:59,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:21:59,887 INFO L276 IsEmpty]: Start isEmpty. Operand 7795 states and 10290 transitions. [2020-07-07 13:21:59,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-07 13:21:59,896 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:21:59,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:21:59,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-07 13:21:59,897 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:21:59,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:21:59,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1483413839, now seen corresponding path program 1 times [2020-07-07 13:21:59,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:21:59,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633962624] [2020-07-07 13:21:59,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:21:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:21:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:21:59,929 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:21:59,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633962624] [2020-07-07 13:21:59,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:21:59,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:21:59,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242051656] [2020-07-07 13:21:59,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:21:59,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:21:59,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:21:59,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:21:59,931 INFO L87 Difference]: Start difference. First operand 7795 states and 10290 transitions. Second operand 3 states. [2020-07-07 13:22:00,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:22:00,693 INFO L93 Difference]: Finished difference Result 9335 states and 12340 transitions. [2020-07-07 13:22:00,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:22:00,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-07-07 13:22:00,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:22:00,725 INFO L225 Difference]: With dead ends: 9335 [2020-07-07 13:22:00,725 INFO L226 Difference]: Without dead ends: 9333 [2020-07-07 13:22:00,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:22:00,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9333 states. [2020-07-07 13:22:01,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9333 to 7795. [2020-07-07 13:22:01,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7795 states. [2020-07-07 13:22:01,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7795 states to 7795 states and 10226 transitions. [2020-07-07 13:22:01,543 INFO L78 Accepts]: Start accepts. Automaton has 7795 states and 10226 transitions. Word has length 86 [2020-07-07 13:22:01,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:22:01,544 INFO L479 AbstractCegarLoop]: Abstraction has 7795 states and 10226 transitions. [2020-07-07 13:22:01,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:22:01,544 INFO L276 IsEmpty]: Start isEmpty. Operand 7795 states and 10226 transitions. [2020-07-07 13:22:01,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-07 13:22:01,551 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:22:01,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:22:01,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-07 13:22:01,552 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:22:01,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:22:01,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1221401062, now seen corresponding path program 1 times [2020-07-07 13:22:01,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:22:01,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483860620] [2020-07-07 13:22:01,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:22:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:22:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:22:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:22:01,590 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:22:01,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483860620] [2020-07-07 13:22:01,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:22:01,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:22:01,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182345339] [2020-07-07 13:22:01,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:22:01,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:22:01,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:22:01,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:22:01,592 INFO L87 Difference]: Start difference. First operand 7795 states and 10226 transitions. Second operand 3 states. [2020-07-07 13:22:02,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:22:02,442 INFO L93 Difference]: Finished difference Result 22903 states and 30068 transitions. [2020-07-07 13:22:02,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:22:02,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-07-07 13:22:02,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:22:02,481 INFO L225 Difference]: With dead ends: 22903 [2020-07-07 13:22:02,481 INFO L226 Difference]: Without dead ends: 15157 [2020-07-07 13:22:02,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:22:02,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15157 states. [2020-07-07 13:22:03,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15157 to 15155. [2020-07-07 13:22:03,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15155 states. [2020-07-07 13:22:03,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15155 states to 15155 states and 19634 transitions. [2020-07-07 13:22:03,400 INFO L78 Accepts]: Start accepts. Automaton has 15155 states and 19634 transitions. Word has length 86 [2020-07-07 13:22:03,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:22:03,401 INFO L479 AbstractCegarLoop]: Abstraction has 15155 states and 19634 transitions. [2020-07-07 13:22:03,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:22:03,401 INFO L276 IsEmpty]: Start isEmpty. Operand 15155 states and 19634 transitions. [2020-07-07 13:22:03,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-07-07 13:22:03,412 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:22:03,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:22:03,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-07 13:22:03,413 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:22:03,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:22:03,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1193948038, now seen corresponding path program 1 times [2020-07-07 13:22:03,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:22:03,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559648325] [2020-07-07 13:22:03,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:22:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:22:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:22:03,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:22:03,443 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:22:03,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559648325] [2020-07-07 13:22:03,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:22:03,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:22:03,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947150557] [2020-07-07 13:22:03,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:22:03,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:22:03,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:22:03,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:22:03,445 INFO L87 Difference]: Start difference. First operand 15155 states and 19634 transitions. Second operand 3 states. [2020-07-07 13:22:04,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:22:04,562 INFO L93 Difference]: Finished difference Result 17975 states and 23220 transitions. [2020-07-07 13:22:04,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:22:04,563 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-07-07 13:22:04,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:22:04,594 INFO L225 Difference]: With dead ends: 17975 [2020-07-07 13:22:04,595 INFO L226 Difference]: Without dead ends: 17973 [2020-07-07 13:22:04,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:22:04,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17973 states. [2020-07-07 13:22:06,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17973 to 15155. [2020-07-07 13:22:06,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15155 states. [2020-07-07 13:22:06,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15155 states to 15155 states and 19506 transitions. [2020-07-07 13:22:06,063 INFO L78 Accepts]: Start accepts. Automaton has 15155 states and 19506 transitions. Word has length 87 [2020-07-07 13:22:06,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:22:06,064 INFO L479 AbstractCegarLoop]: Abstraction has 15155 states and 19506 transitions. [2020-07-07 13:22:06,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:22:06,064 INFO L276 IsEmpty]: Start isEmpty. Operand 15155 states and 19506 transitions. [2020-07-07 13:22:06,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-07-07 13:22:06,072 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:22:06,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:22:06,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-07 13:22:06,073 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:22:06,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:22:06,074 INFO L82 PathProgramCache]: Analyzing trace with hash -791026560, now seen corresponding path program 1 times [2020-07-07 13:22:06,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:22:06,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298398338] [2020-07-07 13:22:06,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:22:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:22:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:22:06,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:22:06,110 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:22:06,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298398338] [2020-07-07 13:22:06,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:22:06,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:22:06,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499128336] [2020-07-07 13:22:06,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:22:06,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:22:06,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:22:06,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:22:06,112 INFO L87 Difference]: Start difference. First operand 15155 states and 19506 transitions. Second operand 3 states. [2020-07-07 13:22:07,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:22:07,458 INFO L93 Difference]: Finished difference Result 44599 states and 57396 transitions. [2020-07-07 13:22:07,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:22:07,459 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-07-07 13:22:07,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:22:07,502 INFO L225 Difference]: With dead ends: 44599 [2020-07-07 13:22:07,503 INFO L226 Difference]: Without dead ends: 29493 [2020-07-07 13:22:07,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:22:07,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29493 states. [2020-07-07 13:22:08,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29493 to 29491. [2020-07-07 13:22:08,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29491 states. [2020-07-07 13:22:08,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29491 states to 29491 states and 37426 transitions. [2020-07-07 13:22:08,959 INFO L78 Accepts]: Start accepts. Automaton has 29491 states and 37426 transitions. Word has length 87 [2020-07-07 13:22:08,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:22:08,959 INFO L479 AbstractCegarLoop]: Abstraction has 29491 states and 37426 transitions. [2020-07-07 13:22:08,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:22:08,959 INFO L276 IsEmpty]: Start isEmpty. Operand 29491 states and 37426 transitions. [2020-07-07 13:22:08,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-07 13:22:08,974 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:22:08,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:22:08,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-07 13:22:08,975 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:22:08,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:22:08,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1707179323, now seen corresponding path program 1 times [2020-07-07 13:22:08,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:22:08,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802928487] [2020-07-07 13:22:08,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:22:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:22:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:22:09,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:22:09,001 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:22:09,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802928487] [2020-07-07 13:22:09,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:22:09,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:22:09,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052125954] [2020-07-07 13:22:09,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:22:09,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:22:09,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:22:09,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:22:09,003 INFO L87 Difference]: Start difference. First operand 29491 states and 37426 transitions. Second operand 3 states. [2020-07-07 13:22:10,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:22:10,978 INFO L93 Difference]: Finished difference Result 34615 states and 43572 transitions. [2020-07-07 13:22:10,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:22:10,978 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-07-07 13:22:10,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:22:11,026 INFO L225 Difference]: With dead ends: 34615 [2020-07-07 13:22:11,026 INFO L226 Difference]: Without dead ends: 34613 [2020-07-07 13:22:11,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:22:11,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34613 states. [2020-07-07 13:22:12,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34613 to 29491. [2020-07-07 13:22:12,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29491 states. [2020-07-07 13:22:12,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29491 states to 29491 states and 37170 transitions. [2020-07-07 13:22:12,480 INFO L78 Accepts]: Start accepts. Automaton has 29491 states and 37170 transitions. Word has length 88 [2020-07-07 13:22:12,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:22:12,481 INFO L479 AbstractCegarLoop]: Abstraction has 29491 states and 37170 transitions. [2020-07-07 13:22:12,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:22:12,481 INFO L276 IsEmpty]: Start isEmpty. Operand 29491 states and 37170 transitions. [2020-07-07 13:22:12,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-07 13:22:12,492 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:22:12,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:22:12,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-07 13:22:12,492 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:22:12,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:22:12,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1248226970, now seen corresponding path program 1 times [2020-07-07 13:22:12,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:22:12,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720914726] [2020-07-07 13:22:12,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:22:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:22:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:22:12,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:22:12,524 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:22:12,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720914726] [2020-07-07 13:22:12,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:22:12,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:22:12,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801321835] [2020-07-07 13:22:12,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:22:12,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:22:12,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:22:12,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:22:12,526 INFO L87 Difference]: Start difference. First operand 29491 states and 37170 transitions. Second operand 3 states. [2020-07-07 13:22:16,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:22:16,207 INFO L93 Difference]: Finished difference Result 86839 states and 109364 transitions. [2020-07-07 13:22:16,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:22:16,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-07-07 13:22:16,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:22:16,272 INFO L225 Difference]: With dead ends: 86839 [2020-07-07 13:22:16,272 INFO L226 Difference]: Without dead ends: 57397 [2020-07-07 13:22:16,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:22:16,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57397 states. [2020-07-07 13:22:18,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57397 to 57395. [2020-07-07 13:22:18,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57395 states. [2020-07-07 13:22:19,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57395 states to 57395 states and 71218 transitions. [2020-07-07 13:22:19,027 INFO L78 Accepts]: Start accepts. Automaton has 57395 states and 71218 transitions. Word has length 88 [2020-07-07 13:22:19,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:22:19,027 INFO L479 AbstractCegarLoop]: Abstraction has 57395 states and 71218 transitions. [2020-07-07 13:22:19,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:22:19,027 INFO L276 IsEmpty]: Start isEmpty. Operand 57395 states and 71218 transitions. [2020-07-07 13:22:19,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-07-07 13:22:19,045 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:22:19,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:22:19,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-07 13:22:19,046 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:22:19,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:22:19,046 INFO L82 PathProgramCache]: Analyzing trace with hash 40577332, now seen corresponding path program 1 times [2020-07-07 13:22:19,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:22:19,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550064017] [2020-07-07 13:22:19,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:22:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:22:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:22:19,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:22:19,077 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:22:19,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550064017] [2020-07-07 13:22:19,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:22:19,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:22:19,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085692159] [2020-07-07 13:22:19,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:22:19,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:22:19,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:22:19,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:22:19,079 INFO L87 Difference]: Start difference. First operand 57395 states and 71218 transitions. Second operand 3 states. [2020-07-07 13:22:25,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:22:25,565 INFO L93 Difference]: Finished difference Result 169015 states and 209460 transitions. [2020-07-07 13:22:25,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:22:25,566 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-07-07 13:22:25,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:22:25,676 INFO L225 Difference]: With dead ends: 169015 [2020-07-07 13:22:25,676 INFO L226 Difference]: Without dead ends: 85301 [2020-07-07 13:22:25,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:22:25,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85301 states. [2020-07-07 13:22:29,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85301 to 85299. [2020-07-07 13:22:29,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85299 states. [2020-07-07 13:22:30,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85299 states to 85299 states and 103218 transitions. [2020-07-07 13:22:30,088 INFO L78 Accepts]: Start accepts. Automaton has 85299 states and 103218 transitions. Word has length 89 [2020-07-07 13:22:30,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:22:30,088 INFO L479 AbstractCegarLoop]: Abstraction has 85299 states and 103218 transitions. [2020-07-07 13:22:30,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:22:30,088 INFO L276 IsEmpty]: Start isEmpty. Operand 85299 states and 103218 transitions. [2020-07-07 13:22:30,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-07-07 13:22:30,113 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:22:30,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:22:30,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-07 13:22:30,113 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:22:30,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:22:30,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1447813926, now seen corresponding path program 1 times [2020-07-07 13:22:30,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:22:30,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [207569900] [2020-07-07 13:22:30,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:22:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:22:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:22:30,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:22:30,146 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:22:30,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [207569900] [2020-07-07 13:22:30,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:22:30,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:22:30,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920841890] [2020-07-07 13:22:30,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:22:30,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:22:30,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:22:30,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:22:30,147 INFO L87 Difference]: Start difference. First operand 85299 states and 103218 transitions. Second operand 3 states. [2020-07-07 13:22:35,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:22:35,414 INFO L93 Difference]: Finished difference Result 94519 states and 112948 transitions. [2020-07-07 13:22:35,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:22:35,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-07-07 13:22:35,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:22:35,505 INFO L225 Difference]: With dead ends: 94519 [2020-07-07 13:22:35,505 INFO L226 Difference]: Without dead ends: 66613 [2020-07-07 13:22:35,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:22:35,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66613 states. [2020-07-07 13:22:38,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66613 to 57395. [2020-07-07 13:22:38,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57395 states. [2020-07-07 13:22:38,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57395 states to 57395 states and 68658 transitions. [2020-07-07 13:22:38,481 INFO L78 Accepts]: Start accepts. Automaton has 57395 states and 68658 transitions. Word has length 89 [2020-07-07 13:22:38,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:22:38,481 INFO L479 AbstractCegarLoop]: Abstraction has 57395 states and 68658 transitions. [2020-07-07 13:22:38,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:22:38,481 INFO L276 IsEmpty]: Start isEmpty. Operand 57395 states and 68658 transitions. [2020-07-07 13:22:38,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-07-07 13:22:38,496 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:22:38,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:22:38,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-07 13:22:38,497 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:22:38,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:22:38,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1997420839, now seen corresponding path program 1 times [2020-07-07 13:22:38,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:22:38,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769813420] [2020-07-07 13:22:38,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:22:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:22:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:22:38,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:22:38,527 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:22:38,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769813420] [2020-07-07 13:22:38,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:22:38,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:22:38,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776895607] [2020-07-07 13:22:38,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:22:38,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:22:38,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:22:38,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:22:38,529 INFO L87 Difference]: Start difference. First operand 57395 states and 68658 transitions. Second operand 3 states. [2020-07-07 13:22:41,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:22:41,418 INFO L93 Difference]: Finished difference Result 57395 states and 68658 transitions. [2020-07-07 13:22:41,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:22:41,419 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-07-07 13:22:41,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:22:41,419 INFO L225 Difference]: With dead ends: 57395 [2020-07-07 13:22:41,419 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 13:22:41,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:22:41,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 13:22:41,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 13:22:41,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 13:22:41,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 13:22:41,483 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 90 [2020-07-07 13:22:41,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:22:41,483 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 13:22:41,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:22:41,484 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 13:22:41,484 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 13:22:41,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-07-07 13:22:41,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 13:22:47,893 WARN L193 SmtUtils]: Spent 6.26 s on a formula simplification. DAG size of input: 2085 DAG size of output: 91 [2020-07-07 13:22:48,742 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 1051 DAG size of output: 15 [2020-07-07 13:22:57,765 WARN L193 SmtUtils]: Spent 9.01 s on a formula simplification. DAG size of input: 3629 DAG size of output: 15 [2020-07-07 13:23:01,496 WARN L193 SmtUtils]: Spent 3.73 s on a formula simplification. DAG size of input: 1071 DAG size of output: 553 [2020-07-07 13:23:07,797 WARN L193 SmtUtils]: Spent 6.29 s on a formula simplification. DAG size of input: 4137 DAG size of output: 3 [2020-07-07 13:23:12,928 WARN L193 SmtUtils]: Spent 5.12 s on a formula simplification. DAG size of input: 2089 DAG size of output: 291 [2020-07-07 13:23:13,623 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 1055 DAG size of output: 35 [2020-07-07 13:23:17,366 WARN L193 SmtUtils]: Spent 3.74 s on a formula simplification. DAG size of input: 2146 DAG size of output: 159 [2020-07-07 13:23:18,233 WARN L193 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 1167 DAG size of output: 57 [2020-07-07 13:23:19,355 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 1453 DAG size of output: 25 [2020-07-07 13:23:34,095 WARN L193 SmtUtils]: Spent 14.73 s on a formula simplification. DAG size of input: 2093 DAG size of output: 1067 [2020-07-07 13:23:35,028 WARN L193 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 1059 DAG size of output: 91 [2020-07-07 13:23:42,450 WARN L193 SmtUtils]: Spent 7.42 s on a formula simplification that was a NOOP. DAG size: 1069 [2020-07-07 13:23:50,212 WARN L193 SmtUtils]: Spent 7.75 s on a formula simplification. DAG size of input: 5162 DAG size of output: 7 [2020-07-07 13:23:52,358 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 1078 DAG size of output: 293 [2020-07-07 13:23:54,763 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 2073 DAG size of output: 7 [2020-07-07 13:23:56,683 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 1063 DAG size of output: 291 [2020-07-07 13:23:59,865 WARN L193 SmtUtils]: Spent 3.17 s on a formula simplification. DAG size of input: 2193 DAG size of output: 91 [2020-07-07 13:24:00,759 WARN L193 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 1262 DAG size of output: 37 [2020-07-07 13:24:02,731 WARN L193 SmtUtils]: Spent 1.97 s on a formula simplification. DAG size of input: 1836 DAG size of output: 17 [2020-07-07 13:24:05,257 WARN L193 SmtUtils]: Spent 2.52 s on a formula simplification. DAG size of input: 2079 DAG size of output: 23 [2020-07-07 13:24:11,657 WARN L193 SmtUtils]: Spent 6.40 s on a formula simplification that was a NOOP. DAG size: 1067 [2020-07-07 13:24:15,291 WARN L193 SmtUtils]: Spent 3.63 s on a formula simplification. DAG size of input: 1071 DAG size of output: 553 [2020-07-07 13:24:16,651 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1089 DAG size of output: 161 [2020-07-07 13:24:19,471 WARN L193 SmtUtils]: Spent 2.81 s on a formula simplification. DAG size of input: 2083 DAG size of output: 55 [2020-07-07 13:24:20,074 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 1047 DAG size of output: 7 [2020-07-07 13:24:22,914 WARN L193 SmtUtils]: Spent 2.83 s on a formula simplification. DAG size of input: 2288 DAG size of output: 55 [2020-07-07 13:24:24,019 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 1453 DAG size of output: 25 [2020-07-07 13:24:29,240 WARN L193 SmtUtils]: Spent 5.22 s on a formula simplification. DAG size of input: 2603 DAG size of output: 11 [2020-07-07 13:24:32,996 WARN L193 SmtUtils]: Spent 3.75 s on a formula simplification. DAG size of input: 2087 DAG size of output: 159 [2020-07-07 13:24:33,640 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 1053 DAG size of output: 23 [2020-07-07 13:24:47,631 WARN L193 SmtUtils]: Spent 13.98 s on a formula simplification. DAG size of input: 2100 DAG size of output: 1067 [2020-07-07 13:24:49,781 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 1078 DAG size of output: 293 [2020-07-07 13:24:50,761 WARN L193 SmtUtils]: Spent 974.00 ms on a formula simplification. DAG size of input: 1120 DAG size of output: 93 [2020-07-07 13:24:58,727 WARN L193 SmtUtils]: Spent 7.95 s on a formula simplification. DAG size of input: 2091 DAG size of output: 551 [2020-07-07 13:24:59,487 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 1057 DAG size of output: 55 [2020-07-07 13:25:02,567 WARN L193 SmtUtils]: Spent 3.08 s on a formula simplification. DAG size of input: 2479 DAG size of output: 35 [2020-07-07 13:25:04,608 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 1836 DAG size of output: 17 [2020-07-07 13:25:10,938 WARN L193 SmtUtils]: Spent 6.32 s on a formula simplification. DAG size of input: 4137 DAG size of output: 3 [2020-07-07 13:25:40,532 WARN L193 SmtUtils]: Spent 29.59 s on a formula simplification that was a NOOP. DAG size: 2095 [2020-07-07 13:25:48,728 WARN L193 SmtUtils]: Spent 8.19 s on a formula simplification. DAG size of input: 2104 DAG size of output: 551 [2020-07-07 13:25:49,990 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1061 DAG size of output: 159 [2020-07-07 13:25:51,355 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1089 DAG size of output: 161 [2020-07-07 13:25:52,251 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 1167 DAG size of output: 57 [2020-07-07 13:25:54,690 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 2077 DAG size of output: 15 [2020-07-07 13:25:58,034 WARN L193 SmtUtils]: Spent 3.34 s on a formula simplification. DAG size of input: 1065 DAG size of output: 551 [2020-07-07 13:26:01,684 WARN L193 SmtUtils]: Spent 3.64 s on a formula simplification. DAG size of input: 2862 DAG size of output: 23 [2020-07-07 13:26:09,099 WARN L193 SmtUtils]: Spent 7.41 s on a formula simplification that was a NOOP. DAG size: 1069 [2020-07-07 13:26:14,431 WARN L193 SmtUtils]: Spent 5.33 s on a formula simplification. DAG size of input: 2603 DAG size of output: 11 [2020-07-07 13:26:17,061 WARN L193 SmtUtils]: Spent 2.62 s on a formula simplification. DAG size of input: 2081 DAG size of output: 35 [2020-07-07 13:26:22,189 WARN L193 SmtUtils]: Spent 5.12 s on a formula simplification. DAG size of input: 2127 DAG size of output: 291 [2020-07-07 13:26:23,173 WARN L193 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 1120 DAG size of output: 93 [2020-07-07 13:26:24,057 WARN L193 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 1262 DAG size of output: 37 [2020-07-07 13:26:25,018 WARN L193 SmtUtils]: Spent 954.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-07-07 13:26:53,381 WARN L193 SmtUtils]: Spent 28.31 s on a formula simplification that was a NOOP. DAG size: 553 [2020-07-07 13:27:00,963 WARN L193 SmtUtils]: Spent 7.57 s on a formula simplification that was a NOOP. DAG size: 291 [2020-07-07 13:27:01,086 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-07-07 13:27:03,501 WARN L193 SmtUtils]: Spent 2.41 s on a formula simplification that was a NOOP. DAG size: 159 [2020-07-07 13:27:03,872 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-07-07 13:28:41,164 WARN L193 SmtUtils]: Spent 1.62 m on a formula simplification that was a NOOP. DAG size: 1067 [2020-07-07 13:28:42,043 WARN L193 SmtUtils]: Spent 874.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-07-07 13:30:26,961 WARN L193 SmtUtils]: Spent 1.75 m on a formula simplification that was a NOOP. DAG size: 1069 [2020-07-07 13:30:35,340 WARN L193 SmtUtils]: Spent 8.37 s on a formula simplification that was a NOOP. DAG size: 293 [2020-07-07 13:30:42,933 WARN L193 SmtUtils]: Spent 7.58 s on a formula simplification that was a NOOP. DAG size: 291 [2020-07-07 13:30:43,784 WARN L193 SmtUtils]: Spent 848.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-07-07 13:30:43,932 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-07-07 13:32:23,276 WARN L193 SmtUtils]: Spent 1.65 m on a formula simplification that was a NOOP. DAG size: 1067 [2020-07-07 13:32:52,442 WARN L193 SmtUtils]: Spent 29.15 s on a formula simplification that was a NOOP. DAG size: 553 [2020-07-07 13:32:55,145 WARN L193 SmtUtils]: Spent 2.70 s on a formula simplification that was a NOOP. DAG size: 161 [2020-07-07 13:32:55,460 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-07-07 13:32:55,778 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-07-07 13:32:58,259 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification that was a NOOP. DAG size: 159 [2020-07-07 13:34:33,878 WARN L193 SmtUtils]: Spent 1.59 m on a formula simplification that was a NOOP. DAG size: 1067 [2020-07-07 13:34:42,298 WARN L193 SmtUtils]: Spent 8.41 s on a formula simplification that was a NOOP. DAG size: 293 [2020-07-07 13:34:43,269 WARN L193 SmtUtils]: Spent 968.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-07-07 13:35:09,425 WARN L193 SmtUtils]: Spent 26.15 s on a formula simplification that was a NOOP. DAG size: 551 [2020-07-07 13:35:09,743 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-07-07 13:35:09,867 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 35