/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 --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 03:36:54,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:36:54,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:36:54,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-20 03:36:54,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:36:54,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:36:54,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:36:54,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:36:54,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:36:54,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:36:54,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:36:54,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:36:54,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:36:54,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:36:54,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:36:54,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:36:54,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 03:36:54,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:36:54,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:36:54,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:36:54,717 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 03:36:54,758 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:36:54,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:36:54,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:36:54,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:36:54,760 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:36:54,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:36:54,762 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:36:54,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:36:54,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:36:54,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:36:54,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:36:54,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:36:54,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:36:54,764 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:36:54,764 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:36:54,764 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:36:54,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:36:54,765 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:36:54,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:36:54,765 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:36:54,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:36:54,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:36:54,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:36:54,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:36:54,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:36:54,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:36:54,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:36:54,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:36:54,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:36:54,769 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 03:36:55,097 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:36:55,112 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:36:55,115 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:36:55,117 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:36:55,117 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:36:55,118 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_11.c [2020-07-20 03:36:55,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2bb3a2d5/8af8347a96464bcb893cdc0548263a64/FLAG7964e93d7 [2020-07-20 03:36:55,738 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:36:55,739 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_11.c [2020-07-20 03:36:55,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2bb3a2d5/8af8347a96464bcb893cdc0548263a64/FLAG7964e93d7 [2020-07-20 03:36:56,150 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2bb3a2d5/8af8347a96464bcb893cdc0548263a64 [2020-07-20 03:36:56,161 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:36:56,173 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:36:56,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:36:56,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:36:56,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:36:56,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:36:56" (1/1) ... [2020-07-20 03:36:56,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e07d769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:56, skipping insertion in model container [2020-07-20 03:36:56,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:36:56" (1/1) ... [2020-07-20 03:36:56,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:36:56,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:36:56,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:36:56,449 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:36:56,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:36:56,490 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:36:56,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:56 WrapperNode [2020-07-20 03:36:56,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:36:56,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:36:56,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:36:56,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:36:56,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:56" (1/1) ... [2020-07-20 03:36:56,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:56" (1/1) ... [2020-07-20 03:36:56,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:56" (1/1) ... [2020-07-20 03:36:56,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:56" (1/1) ... [2020-07-20 03:36:56,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:56" (1/1) ... [2020-07-20 03:36:56,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:56" (1/1) ... [2020-07-20 03:36:56,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:56" (1/1) ... [2020-07-20 03:36:56,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:36:56,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:36:56,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:36:56,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:36:56,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:56" (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 [2020-07-20 03:36:56,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:36:56,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:36:56,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:36:56,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:36:56,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 03:36:56,692 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:36:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:36:56,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:36:57,030 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:36:57,030 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 03:36:57,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:36:57 BoogieIcfgContainer [2020-07-20 03:36:57,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:36:57,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:36:57,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:36:57,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:36:57,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:36:56" (1/3) ... [2020-07-20 03:36:57,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420661d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:36:57, skipping insertion in model container [2020-07-20 03:36:57,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:56" (2/3) ... [2020-07-20 03:36:57,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420661d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:36:57, skipping insertion in model container [2020-07-20 03:36:57,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:36:57" (3/3) ... [2020-07-20 03:36:57,047 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_11.c [2020-07-20 03:36:57,060 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:36:57,068 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 03:36:57,085 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 03:36:57,112 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:36:57,112 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:36:57,112 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:36:57,112 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:36:57,113 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:36:57,113 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:36:57,113 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:36:57,113 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:36:57,137 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-07-20 03:36:57,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 03:36:57,145 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:57,146 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] [2020-07-20 03:36:57,147 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:57,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:57,153 INFO L82 PathProgramCache]: Analyzing trace with hash -316470182, now seen corresponding path program 1 times [2020-07-20 03:36:57,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:57,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899806449] [2020-07-20 03:36:57,161 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:36:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:57,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:57,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899806449] [2020-07-20 03:36:57,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:36:57,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:36:57,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266619598] [2020-07-20 03:36:57,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:36:57,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:57,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:36:57,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:36:57,418 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 3 states. [2020-07-20 03:36:57,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:57,485 INFO L93 Difference]: Finished difference Result 93 states and 162 transitions. [2020-07-20 03:36:57,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:36:57,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-20 03:36:57,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:57,501 INFO L225 Difference]: With dead ends: 93 [2020-07-20 03:36:57,502 INFO L226 Difference]: Without dead ends: 78 [2020-07-20 03:36:57,506 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 [2020-07-20 03:36:57,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-20 03:36:57,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 54. [2020-07-20 03:36:57,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-20 03:36:57,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-07-20 03:36:57,552 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 21 [2020-07-20 03:36:57,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:57,553 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-07-20 03:36:57,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:36:57,553 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-07-20 03:36:57,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 03:36:57,554 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:57,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:36:57,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:36:57,556 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:57,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:57,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1327587432, now seen corresponding path program 1 times [2020-07-20 03:36:57,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:57,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328475223] [2020-07-20 03:36:57,557 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:36:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:57,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328475223] [2020-07-20 03:36:57,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:36:57,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:36:57,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601274152] [2020-07-20 03:36:57,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:36:57,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:57,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:36:57,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:36:57,655 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 3 states. [2020-07-20 03:36:57,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:57,687 INFO L93 Difference]: Finished difference Result 127 states and 232 transitions. [2020-07-20 03:36:57,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:36:57,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-20 03:36:57,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:57,690 INFO L225 Difference]: With dead ends: 127 [2020-07-20 03:36:57,691 INFO L226 Difference]: Without dead ends: 78 [2020-07-20 03:36:57,693 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 [2020-07-20 03:36:57,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-20 03:36:57,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-07-20 03:36:57,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-20 03:36:57,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 137 transitions. [2020-07-20 03:36:57,713 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 137 transitions. Word has length 21 [2020-07-20 03:36:57,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:57,714 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 137 transitions. [2020-07-20 03:36:57,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:36:57,715 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 137 transitions. [2020-07-20 03:36:57,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 03:36:57,716 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:57,716 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] [2020-07-20 03:36:57,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 03:36:57,718 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:57,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:57,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1220427994, now seen corresponding path program 1 times [2020-07-20 03:36:57,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:57,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127438701] [2020-07-20 03:36:57,720 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:36:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:57,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:57,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127438701] [2020-07-20 03:36:57,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:36:57,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:36:57,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452287032] [2020-07-20 03:36:57,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:36:57,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:57,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:36:57,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:36:57,845 INFO L87 Difference]: Start difference. First operand 76 states and 137 transitions. Second operand 3 states. [2020-07-20 03:36:57,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:57,874 INFO L93 Difference]: Finished difference Result 117 states and 207 transitions. [2020-07-20 03:36:57,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:36:57,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-20 03:36:57,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:57,877 INFO L225 Difference]: With dead ends: 117 [2020-07-20 03:36:57,877 INFO L226 Difference]: Without dead ends: 81 [2020-07-20 03:36:57,878 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 [2020-07-20 03:36:57,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-07-20 03:36:57,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2020-07-20 03:36:57,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-20 03:36:57,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 139 transitions. [2020-07-20 03:36:57,889 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 139 transitions. Word has length 22 [2020-07-20 03:36:57,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:57,890 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 139 transitions. [2020-07-20 03:36:57,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:36:57,890 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 139 transitions. [2020-07-20 03:36:57,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 03:36:57,891 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:57,891 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] [2020-07-20 03:36:57,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 03:36:57,892 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:57,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:57,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1794675624, now seen corresponding path program 1 times [2020-07-20 03:36:57,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:57,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618915594] [2020-07-20 03:36:57,893 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:36:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:57,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:57,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618915594] [2020-07-20 03:36:57,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:36:57,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:36:57,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323561] [2020-07-20 03:36:57,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:36:57,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:57,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:36:57,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:36:57,941 INFO L87 Difference]: Start difference. First operand 79 states and 139 transitions. Second operand 3 states. [2020-07-20 03:36:57,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:57,983 INFO L93 Difference]: Finished difference Result 148 states and 264 transitions. [2020-07-20 03:36:57,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:36:57,984 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-20 03:36:57,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:57,986 INFO L225 Difference]: With dead ends: 148 [2020-07-20 03:36:57,987 INFO L226 Difference]: Without dead ends: 146 [2020-07-20 03:36:57,987 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 [2020-07-20 03:36:57,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-07-20 03:36:57,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 104. [2020-07-20 03:36:58,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-07-20 03:36:58,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 184 transitions. [2020-07-20 03:36:58,003 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 184 transitions. Word has length 22 [2020-07-20 03:36:58,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:58,003 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 184 transitions. [2020-07-20 03:36:58,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:36:58,004 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 184 transitions. [2020-07-20 03:36:58,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 03:36:58,005 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:58,005 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] [2020-07-20 03:36:58,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 03:36:58,006 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:58,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:58,007 INFO L82 PathProgramCache]: Analyzing trace with hash 783558374, now seen corresponding path program 1 times [2020-07-20 03:36:58,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:58,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005116757] [2020-07-20 03:36:58,008 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:36:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:58,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005116757] [2020-07-20 03:36:58,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:36:58,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:36:58,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024130187] [2020-07-20 03:36:58,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:36:58,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:58,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:36:58,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:36:58,055 INFO L87 Difference]: Start difference. First operand 104 states and 184 transitions. Second operand 3 states. [2020-07-20 03:36:58,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:58,097 INFO L93 Difference]: Finished difference Result 244 states and 438 transitions. [2020-07-20 03:36:58,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:36:58,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-20 03:36:58,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:58,100 INFO L225 Difference]: With dead ends: 244 [2020-07-20 03:36:58,101 INFO L226 Difference]: Without dead ends: 148 [2020-07-20 03:36:58,102 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 [2020-07-20 03:36:58,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-07-20 03:36:58,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2020-07-20 03:36:58,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-07-20 03:36:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 258 transitions. [2020-07-20 03:36:58,118 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 258 transitions. Word has length 22 [2020-07-20 03:36:58,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:58,119 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 258 transitions. [2020-07-20 03:36:58,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:36:58,119 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 258 transitions. [2020-07-20 03:36:58,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 03:36:58,121 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:58,121 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] [2020-07-20 03:36:58,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 03:36:58,121 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:58,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:58,122 INFO L82 PathProgramCache]: Analyzing trace with hash -199417107, now seen corresponding path program 1 times [2020-07-20 03:36:58,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:58,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100914792] [2020-07-20 03:36:58,123 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:36:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:58,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:58,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100914792] [2020-07-20 03:36:58,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:36:58,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:36:58,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201461265] [2020-07-20 03:36:58,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:36:58,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:58,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:36:58,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:36:58,182 INFO L87 Difference]: Start difference. First operand 146 states and 258 transitions. Second operand 3 states. [2020-07-20 03:36:58,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:58,206 INFO L93 Difference]: Finished difference Result 219 states and 385 transitions. [2020-07-20 03:36:58,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:36:58,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-20 03:36:58,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:58,209 INFO L225 Difference]: With dead ends: 219 [2020-07-20 03:36:58,209 INFO L226 Difference]: Without dead ends: 150 [2020-07-20 03:36:58,210 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 [2020-07-20 03:36:58,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-07-20 03:36:58,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2020-07-20 03:36:58,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-07-20 03:36:58,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 258 transitions. [2020-07-20 03:36:58,225 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 258 transitions. Word has length 23 [2020-07-20 03:36:58,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:58,239 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 258 transitions. [2020-07-20 03:36:58,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:36:58,240 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 258 transitions. [2020-07-20 03:36:58,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 03:36:58,241 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:58,241 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] [2020-07-20 03:36:58,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 03:36:58,242 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:58,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:58,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1479280785, now seen corresponding path program 1 times [2020-07-20 03:36:58,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:58,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760057139] [2020-07-20 03:36:58,243 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:36:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:58,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760057139] [2020-07-20 03:36:58,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:36:58,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:36:58,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250233532] [2020-07-20 03:36:58,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:36:58,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:58,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:36:58,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:36:58,298 INFO L87 Difference]: Start difference. First operand 148 states and 258 transitions. Second operand 3 states. [2020-07-20 03:36:58,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:58,331 INFO L93 Difference]: Finished difference Result 276 states and 488 transitions. [2020-07-20 03:36:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:36:58,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-20 03:36:58,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:58,334 INFO L225 Difference]: With dead ends: 276 [2020-07-20 03:36:58,335 INFO L226 Difference]: Without dead ends: 274 [2020-07-20 03:36:58,336 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 [2020-07-20 03:36:58,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-07-20 03:36:58,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 200. [2020-07-20 03:36:58,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-07-20 03:36:58,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 346 transitions. [2020-07-20 03:36:58,351 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 346 transitions. Word has length 23 [2020-07-20 03:36:58,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:58,352 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 346 transitions. [2020-07-20 03:36:58,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:36:58,352 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 346 transitions. [2020-07-20 03:36:58,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 03:36:58,354 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:58,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:36:58,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 03:36:58,354 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:58,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:58,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1804569261, now seen corresponding path program 1 times [2020-07-20 03:36:58,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:58,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48561578] [2020-07-20 03:36:58,356 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:36:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:58,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:58,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48561578] [2020-07-20 03:36:58,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:36:58,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:36:58,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515460294] [2020-07-20 03:36:58,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:36:58,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:58,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:36:58,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:36:58,387 INFO L87 Difference]: Start difference. First operand 200 states and 346 transitions. Second operand 3 states. [2020-07-20 03:36:58,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:58,411 INFO L93 Difference]: Finished difference Result 472 states and 824 transitions. [2020-07-20 03:36:58,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:36:58,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-20 03:36:58,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:58,413 INFO L225 Difference]: With dead ends: 472 [2020-07-20 03:36:58,414 INFO L226 Difference]: Without dead ends: 282 [2020-07-20 03:36:58,415 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 [2020-07-20 03:36:58,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-07-20 03:36:58,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 280. [2020-07-20 03:36:58,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-07-20 03:36:58,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 482 transitions. [2020-07-20 03:36:58,432 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 482 transitions. Word has length 23 [2020-07-20 03:36:58,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:58,433 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 482 transitions. [2020-07-20 03:36:58,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:36:58,433 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 482 transitions. [2020-07-20 03:36:58,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 03:36:58,435 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:58,435 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] [2020-07-20 03:36:58,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-20 03:36:58,435 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:58,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:58,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1387149659, now seen corresponding path program 1 times [2020-07-20 03:36:58,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:58,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033809226] [2020-07-20 03:36:58,437 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:36:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:58,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:58,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033809226] [2020-07-20 03:36:58,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:36:58,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:36:58,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779985550] [2020-07-20 03:36:58,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:36:58,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:58,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:36:58,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:36:58,476 INFO L87 Difference]: Start difference. First operand 280 states and 482 transitions. Second operand 3 states. [2020-07-20 03:36:58,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:58,496 INFO L93 Difference]: Finished difference Result 420 states and 720 transitions. [2020-07-20 03:36:58,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:36:58,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-20 03:36:58,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:58,499 INFO L225 Difference]: With dead ends: 420 [2020-07-20 03:36:58,499 INFO L226 Difference]: Without dead ends: 286 [2020-07-20 03:36:58,500 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 [2020-07-20 03:36:58,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-07-20 03:36:58,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2020-07-20 03:36:58,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-07-20 03:36:58,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 482 transitions. [2020-07-20 03:36:58,522 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 482 transitions. Word has length 24 [2020-07-20 03:36:58,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:58,523 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 482 transitions. [2020-07-20 03:36:58,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:36:58,523 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 482 transitions. [2020-07-20 03:36:58,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 03:36:58,527 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:58,527 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] [2020-07-20 03:36:58,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-20 03:36:58,528 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:58,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:58,531 INFO L82 PathProgramCache]: Analyzing trace with hash 107285981, now seen corresponding path program 1 times [2020-07-20 03:36:58,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:58,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12002992] [2020-07-20 03:36:58,532 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:36:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:58,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:58,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12002992] [2020-07-20 03:36:58,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:36:58,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:36:58,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058862093] [2020-07-20 03:36:58,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:36:58,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:58,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:36:58,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:36:58,596 INFO L87 Difference]: Start difference. First operand 284 states and 482 transitions. Second operand 3 states. [2020-07-20 03:36:58,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:58,641 INFO L93 Difference]: Finished difference Result 524 states and 904 transitions. [2020-07-20 03:36:58,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:36:58,646 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-20 03:36:58,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:58,650 INFO L225 Difference]: With dead ends: 524 [2020-07-20 03:36:58,650 INFO L226 Difference]: Without dead ends: 522 [2020-07-20 03:36:58,653 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 [2020-07-20 03:36:58,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-07-20 03:36:58,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 392. [2020-07-20 03:36:58,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-07-20 03:36:58,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 654 transitions. [2020-07-20 03:36:58,680 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 654 transitions. Word has length 24 [2020-07-20 03:36:58,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:58,683 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 654 transitions. [2020-07-20 03:36:58,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:36:58,683 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 654 transitions. [2020-07-20 03:36:58,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 03:36:58,689 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:58,689 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] [2020-07-20 03:36:58,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-20 03:36:58,690 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:58,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:58,690 INFO L82 PathProgramCache]: Analyzing trace with hash -903831269, now seen corresponding path program 1 times [2020-07-20 03:36:58,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:58,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284705753] [2020-07-20 03:36:58,691 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:36:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:58,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:58,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284705753] [2020-07-20 03:36:58,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:36:58,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:36:58,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133520463] [2020-07-20 03:36:58,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:36:58,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:58,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:36:58,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:36:58,752 INFO L87 Difference]: Start difference. First operand 392 states and 654 transitions. Second operand 3 states. [2020-07-20 03:36:58,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:58,796 INFO L93 Difference]: Finished difference Result 924 states and 1552 transitions. [2020-07-20 03:36:58,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:36:58,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-20 03:36:58,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:58,801 INFO L225 Difference]: With dead ends: 924 [2020-07-20 03:36:58,801 INFO L226 Difference]: Without dead ends: 546 [2020-07-20 03:36:58,803 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 [2020-07-20 03:36:58,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-07-20 03:36:58,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 544. [2020-07-20 03:36:58,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-07-20 03:36:58,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 902 transitions. [2020-07-20 03:36:58,827 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 902 transitions. Word has length 24 [2020-07-20 03:36:58,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:58,828 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 902 transitions. [2020-07-20 03:36:58,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:36:58,828 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 902 transitions. [2020-07-20 03:36:58,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 03:36:58,832 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:58,832 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] [2020-07-20 03:36:58,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-20 03:36:58,834 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:58,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:58,835 INFO L82 PathProgramCache]: Analyzing trace with hash -968887806, now seen corresponding path program 1 times [2020-07-20 03:36:58,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:58,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623920892] [2020-07-20 03:36:58,836 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:36:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:58,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:58,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623920892] [2020-07-20 03:36:58,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:36:58,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:36:58,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761496707] [2020-07-20 03:36:58,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:36:58,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:58,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:36:58,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:36:58,884 INFO L87 Difference]: Start difference. First operand 544 states and 902 transitions. Second operand 3 states. [2020-07-20 03:36:58,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:58,918 INFO L93 Difference]: Finished difference Result 816 states and 1348 transitions. [2020-07-20 03:36:58,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:36:58,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-07-20 03:36:58,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:58,923 INFO L225 Difference]: With dead ends: 816 [2020-07-20 03:36:58,923 INFO L226 Difference]: Without dead ends: 554 [2020-07-20 03:36:58,924 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 [2020-07-20 03:36:58,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2020-07-20 03:36:58,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 552. [2020-07-20 03:36:58,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-07-20 03:36:58,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 902 transitions. [2020-07-20 03:36:58,945 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 902 transitions. Word has length 25 [2020-07-20 03:36:58,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:58,946 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 902 transitions. [2020-07-20 03:36:58,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:36:58,946 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 902 transitions. [2020-07-20 03:36:58,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 03:36:58,947 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:58,947 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] [2020-07-20 03:36:58,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-20 03:36:58,948 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:58,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:58,948 INFO L82 PathProgramCache]: Analyzing trace with hash 2046215812, now seen corresponding path program 1 times [2020-07-20 03:36:58,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:58,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963514859] [2020-07-20 03:36:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:36:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:58,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:58,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963514859] [2020-07-20 03:36:58,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:36:58,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:36:58,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620286681] [2020-07-20 03:36:58,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:36:58,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:58,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:36:58,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:36:58,991 INFO L87 Difference]: Start difference. First operand 552 states and 902 transitions. Second operand 3 states. [2020-07-20 03:36:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:59,039 INFO L93 Difference]: Finished difference Result 1004 states and 1672 transitions. [2020-07-20 03:36:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:36:59,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-07-20 03:36:59,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:59,048 INFO L225 Difference]: With dead ends: 1004 [2020-07-20 03:36:59,048 INFO L226 Difference]: Without dead ends: 1002 [2020-07-20 03:36:59,049 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 [2020-07-20 03:36:59,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2020-07-20 03:36:59,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 776. [2020-07-20 03:36:59,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2020-07-20 03:36:59,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1238 transitions. [2020-07-20 03:36:59,079 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1238 transitions. Word has length 25 [2020-07-20 03:36:59,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:59,079 INFO L479 AbstractCegarLoop]: Abstraction has 776 states and 1238 transitions. [2020-07-20 03:36:59,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:36:59,079 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1238 transitions. [2020-07-20 03:36:59,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 03:36:59,081 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:59,082 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] [2020-07-20 03:36:59,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-20 03:36:59,082 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:59,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:59,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1035098562, now seen corresponding path program 1 times [2020-07-20 03:36:59,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:59,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240008695] [2020-07-20 03:36:59,087 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:36:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:59,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:59,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240008695] [2020-07-20 03:36:59,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:36:59,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:36:59,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348237385] [2020-07-20 03:36:59,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:36:59,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:59,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:36:59,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:36:59,119 INFO L87 Difference]: Start difference. First operand 776 states and 1238 transitions. Second operand 3 states. [2020-07-20 03:36:59,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:59,160 INFO L93 Difference]: Finished difference Result 1820 states and 2920 transitions. [2020-07-20 03:36:59,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:36:59,161 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-07-20 03:36:59,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:59,167 INFO L225 Difference]: With dead ends: 1820 [2020-07-20 03:36:59,167 INFO L226 Difference]: Without dead ends: 1066 [2020-07-20 03:36:59,170 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 [2020-07-20 03:36:59,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2020-07-20 03:36:59,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1064. [2020-07-20 03:36:59,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2020-07-20 03:36:59,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1686 transitions. [2020-07-20 03:36:59,210 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1686 transitions. Word has length 25 [2020-07-20 03:36:59,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:59,210 INFO L479 AbstractCegarLoop]: Abstraction has 1064 states and 1686 transitions. [2020-07-20 03:36:59,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:36:59,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1686 transitions. [2020-07-20 03:36:59,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 03:36:59,213 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:59,213 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] [2020-07-20 03:36:59,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-20 03:36:59,214 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:59,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:59,214 INFO L82 PathProgramCache]: Analyzing trace with hash -991604848, now seen corresponding path program 1 times [2020-07-20 03:36:59,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:59,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97123197] [2020-07-20 03:36:59,215 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:36:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:59,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97123197] [2020-07-20 03:36:59,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:36:59,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:36:59,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108746189] [2020-07-20 03:36:59,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:36:59,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:59,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:36:59,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:36:59,263 INFO L87 Difference]: Start difference. First operand 1064 states and 1686 transitions. Second operand 3 states. [2020-07-20 03:36:59,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:59,295 INFO L93 Difference]: Finished difference Result 1596 states and 2520 transitions. [2020-07-20 03:36:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:36:59,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-20 03:36:59,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:59,301 INFO L225 Difference]: With dead ends: 1596 [2020-07-20 03:36:59,301 INFO L226 Difference]: Without dead ends: 1082 [2020-07-20 03:36:59,305 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 [2020-07-20 03:36:59,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2020-07-20 03:36:59,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1080. [2020-07-20 03:36:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1080 states. [2020-07-20 03:36:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1686 transitions. [2020-07-20 03:36:59,338 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1686 transitions. Word has length 26 [2020-07-20 03:36:59,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:59,340 INFO L479 AbstractCegarLoop]: Abstraction has 1080 states and 1686 transitions. [2020-07-20 03:36:59,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:36:59,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1686 transitions. [2020-07-20 03:36:59,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 03:36:59,342 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:59,342 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] [2020-07-20 03:36:59,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-20 03:36:59,342 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:59,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:59,343 INFO L82 PathProgramCache]: Analyzing trace with hash 2023498770, now seen corresponding path program 1 times [2020-07-20 03:36:59,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:59,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743729886] [2020-07-20 03:36:59,343 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:36:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:59,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:59,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743729886] [2020-07-20 03:36:59,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:36:59,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:36:59,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206185658] [2020-07-20 03:36:59,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:36:59,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:59,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:36:59,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:36:59,373 INFO L87 Difference]: Start difference. First operand 1080 states and 1686 transitions. Second operand 3 states. [2020-07-20 03:36:59,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:59,413 INFO L93 Difference]: Finished difference Result 1932 states and 3080 transitions. [2020-07-20 03:36:59,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:36:59,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-20 03:36:59,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:59,424 INFO L225 Difference]: With dead ends: 1932 [2020-07-20 03:36:59,425 INFO L226 Difference]: Without dead ends: 1930 [2020-07-20 03:36:59,426 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 [2020-07-20 03:36:59,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2020-07-20 03:36:59,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1544. [2020-07-20 03:36:59,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2020-07-20 03:36:59,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2342 transitions. [2020-07-20 03:36:59,484 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2342 transitions. Word has length 26 [2020-07-20 03:36:59,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:59,484 INFO L479 AbstractCegarLoop]: Abstraction has 1544 states and 2342 transitions. [2020-07-20 03:36:59,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:36:59,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2342 transitions. [2020-07-20 03:36:59,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 03:36:59,488 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:59,488 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] [2020-07-20 03:36:59,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-20 03:36:59,489 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:59,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:59,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1012381520, now seen corresponding path program 1 times [2020-07-20 03:36:59,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:59,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329595465] [2020-07-20 03:36:59,490 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:36:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:59,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:59,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329595465] [2020-07-20 03:36:59,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:36:59,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:36:59,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4116231] [2020-07-20 03:36:59,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:36:59,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:59,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:36:59,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:36:59,536 INFO L87 Difference]: Start difference. First operand 1544 states and 2342 transitions. Second operand 3 states. [2020-07-20 03:36:59,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:59,603 INFO L93 Difference]: Finished difference Result 3596 states and 5480 transitions. [2020-07-20 03:36:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:36:59,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-20 03:36:59,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:59,618 INFO L225 Difference]: With dead ends: 3596 [2020-07-20 03:36:59,619 INFO L226 Difference]: Without dead ends: 2090 [2020-07-20 03:36:59,625 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 [2020-07-20 03:36:59,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2020-07-20 03:36:59,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 2088. [2020-07-20 03:36:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2088 states. [2020-07-20 03:36:59,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 3142 transitions. [2020-07-20 03:36:59,713 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 3142 transitions. Word has length 26 [2020-07-20 03:36:59,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:59,714 INFO L479 AbstractCegarLoop]: Abstraction has 2088 states and 3142 transitions. [2020-07-20 03:36:59,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:36:59,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 3142 transitions. [2020-07-20 03:36:59,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 03:36:59,719 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:59,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:36:59,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-20 03:36:59,720 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:59,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:59,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1695832809, now seen corresponding path program 1 times [2020-07-20 03:36:59,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:59,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403904678] [2020-07-20 03:36:59,721 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:36:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:59,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:59,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403904678] [2020-07-20 03:36:59,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:36:59,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:36:59,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210726972] [2020-07-20 03:36:59,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:36:59,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:59,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:36:59,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:36:59,756 INFO L87 Difference]: Start difference. First operand 2088 states and 3142 transitions. Second operand 3 states. [2020-07-20 03:36:59,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:59,819 INFO L93 Difference]: Finished difference Result 3132 states and 4696 transitions. [2020-07-20 03:36:59,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:36:59,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-07-20 03:36:59,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:59,832 INFO L225 Difference]: With dead ends: 3132 [2020-07-20 03:36:59,832 INFO L226 Difference]: Without dead ends: 2122 [2020-07-20 03:36:59,835 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 [2020-07-20 03:36:59,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2020-07-20 03:36:59,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2120. [2020-07-20 03:36:59,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2120 states. [2020-07-20 03:36:59,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2120 states to 2120 states and 3142 transitions. [2020-07-20 03:36:59,913 INFO L78 Accepts]: Start accepts. Automaton has 2120 states and 3142 transitions. Word has length 27 [2020-07-20 03:36:59,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:59,913 INFO L479 AbstractCegarLoop]: Abstraction has 2120 states and 3142 transitions. [2020-07-20 03:36:59,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:36:59,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2120 states and 3142 transitions. [2020-07-20 03:36:59,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 03:36:59,917 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:59,917 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] [2020-07-20 03:36:59,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-20 03:36:59,917 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:59,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:59,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1319270809, now seen corresponding path program 1 times [2020-07-20 03:36:59,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:59,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876697554] [2020-07-20 03:36:59,920 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:36:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:59,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:59,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876697554] [2020-07-20 03:36:59,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:36:59,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:36:59,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229587181] [2020-07-20 03:36:59,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:36:59,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:59,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:36:59,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:36:59,944 INFO L87 Difference]: Start difference. First operand 2120 states and 3142 transitions. Second operand 3 states. [2020-07-20 03:37:00,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:00,034 INFO L93 Difference]: Finished difference Result 3724 states and 5640 transitions. [2020-07-20 03:37:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:00,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-07-20 03:37:00,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:00,055 INFO L225 Difference]: With dead ends: 3724 [2020-07-20 03:37:00,055 INFO L226 Difference]: Without dead ends: 3722 [2020-07-20 03:37:00,057 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 [2020-07-20 03:37:00,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3722 states. [2020-07-20 03:37:00,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3722 to 3080. [2020-07-20 03:37:00,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3080 states. [2020-07-20 03:37:00,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3080 states to 3080 states and 4422 transitions. [2020-07-20 03:37:00,146 INFO L78 Accepts]: Start accepts. Automaton has 3080 states and 4422 transitions. Word has length 27 [2020-07-20 03:37:00,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:00,146 INFO L479 AbstractCegarLoop]: Abstraction has 3080 states and 4422 transitions. [2020-07-20 03:37:00,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:00,147 INFO L276 IsEmpty]: Start isEmpty. Operand 3080 states and 4422 transitions. [2020-07-20 03:37:00,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 03:37:00,154 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:00,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:00,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-20 03:37:00,154 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:00,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:00,155 INFO L82 PathProgramCache]: Analyzing trace with hash 308153559, now seen corresponding path program 1 times [2020-07-20 03:37:00,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:00,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877890324] [2020-07-20 03:37:00,155 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:37:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:00,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877890324] [2020-07-20 03:37:00,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:00,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:00,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803981278] [2020-07-20 03:37:00,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:00,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:00,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:00,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:00,186 INFO L87 Difference]: Start difference. First operand 3080 states and 4422 transitions. Second operand 3 states. [2020-07-20 03:37:00,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:00,259 INFO L93 Difference]: Finished difference Result 7116 states and 10248 transitions. [2020-07-20 03:37:00,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:00,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-07-20 03:37:00,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:00,281 INFO L225 Difference]: With dead ends: 7116 [2020-07-20 03:37:00,281 INFO L226 Difference]: Without dead ends: 4106 [2020-07-20 03:37:00,288 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 [2020-07-20 03:37:00,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2020-07-20 03:37:00,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 4104. [2020-07-20 03:37:00,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4104 states. [2020-07-20 03:37:00,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4104 states to 4104 states and 5830 transitions. [2020-07-20 03:37:00,454 INFO L78 Accepts]: Start accepts. Automaton has 4104 states and 5830 transitions. Word has length 27 [2020-07-20 03:37:00,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:00,455 INFO L479 AbstractCegarLoop]: Abstraction has 4104 states and 5830 transitions. [2020-07-20 03:37:00,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:00,455 INFO L276 IsEmpty]: Start isEmpty. Operand 4104 states and 5830 transitions. [2020-07-20 03:37:00,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 03:37:00,461 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:00,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:00,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-20 03:37:00,462 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:00,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:00,462 INFO L82 PathProgramCache]: Analyzing trace with hash -2052062779, now seen corresponding path program 1 times [2020-07-20 03:37:00,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:00,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428945176] [2020-07-20 03:37:00,463 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:37:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:00,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428945176] [2020-07-20 03:37:00,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:00,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:00,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037484199] [2020-07-20 03:37:00,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:00,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:00,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:00,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:00,489 INFO L87 Difference]: Start difference. First operand 4104 states and 5830 transitions. Second operand 3 states. [2020-07-20 03:37:00,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:00,614 INFO L93 Difference]: Finished difference Result 6156 states and 8712 transitions. [2020-07-20 03:37:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:00,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-07-20 03:37:00,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:00,639 INFO L225 Difference]: With dead ends: 6156 [2020-07-20 03:37:00,639 INFO L226 Difference]: Without dead ends: 4170 [2020-07-20 03:37:00,644 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 [2020-07-20 03:37:00,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2020-07-20 03:37:00,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 4168. [2020-07-20 03:37:00,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4168 states. [2020-07-20 03:37:00,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4168 states to 4168 states and 5830 transitions. [2020-07-20 03:37:00,780 INFO L78 Accepts]: Start accepts. Automaton has 4168 states and 5830 transitions. Word has length 28 [2020-07-20 03:37:00,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:00,781 INFO L479 AbstractCegarLoop]: Abstraction has 4168 states and 5830 transitions. [2020-07-20 03:37:00,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:00,781 INFO L276 IsEmpty]: Start isEmpty. Operand 4168 states and 5830 transitions. [2020-07-20 03:37:00,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 03:37:00,786 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:00,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:00,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-20 03:37:00,787 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:00,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:00,788 INFO L82 PathProgramCache]: Analyzing trace with hash 963040839, now seen corresponding path program 1 times [2020-07-20 03:37:00,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:00,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281729719] [2020-07-20 03:37:00,788 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:37:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:00,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:00,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281729719] [2020-07-20 03:37:00,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:00,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:00,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384136343] [2020-07-20 03:37:00,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:00,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:00,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:00,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:00,814 INFO L87 Difference]: Start difference. First operand 4168 states and 5830 transitions. Second operand 3 states. [2020-07-20 03:37:00,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:00,943 INFO L93 Difference]: Finished difference Result 12108 states and 16712 transitions. [2020-07-20 03:37:00,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:00,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-07-20 03:37:00,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:00,964 INFO L225 Difference]: With dead ends: 12108 [2020-07-20 03:37:00,964 INFO L226 Difference]: Without dead ends: 8074 [2020-07-20 03:37:00,978 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 [2020-07-20 03:37:00,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8074 states. [2020-07-20 03:37:01,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8074 to 8072. [2020-07-20 03:37:01,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8072 states. [2020-07-20 03:37:01,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8072 states to 8072 states and 10886 transitions. [2020-07-20 03:37:01,242 INFO L78 Accepts]: Start accepts. Automaton has 8072 states and 10886 transitions. Word has length 28 [2020-07-20 03:37:01,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:01,243 INFO L479 AbstractCegarLoop]: Abstraction has 8072 states and 10886 transitions. [2020-07-20 03:37:01,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:01,243 INFO L276 IsEmpty]: Start isEmpty. Operand 8072 states and 10886 transitions. [2020-07-20 03:37:01,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 03:37:01,299 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:01,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:01,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-07-20 03:37:01,299 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:01,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:01,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1974158089, now seen corresponding path program 1 times [2020-07-20 03:37:01,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:01,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263918635] [2020-07-20 03:37:01,303 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:37:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:01,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263918635] [2020-07-20 03:37:01,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944624327] [2020-07-20 03:37:01,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,347 INFO L87 Difference]: Start difference. First operand 8072 states and 10886 transitions. Second operand 3 states. [2020-07-20 03:37:01,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,479 INFO L93 Difference]: Finished difference Result 9100 states and 12680 transitions. [2020-07-20 03:37:01,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-07-20 03:37:01,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:01,502 INFO L225 Difference]: With dead ends: 9100 [2020-07-20 03:37:01,503 INFO L226 Difference]: Without dead ends: 9098 [2020-07-20 03:37:01,507 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 [2020-07-20 03:37:01,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9098 states. [2020-07-20 03:37:01,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9098 to 8072. [2020-07-20 03:37:01,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8072 states. [2020-07-20 03:37:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8072 states to 8072 states and 10758 transitions. [2020-07-20 03:37:01,742 INFO L78 Accepts]: Start accepts. Automaton has 8072 states and 10758 transitions. Word has length 28 [2020-07-20 03:37:01,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:01,743 INFO L479 AbstractCegarLoop]: Abstraction has 8072 states and 10758 transitions. [2020-07-20 03:37:01,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:01,743 INFO L276 IsEmpty]: Start isEmpty. Operand 8072 states and 10758 transitions. [2020-07-20 03:37:01,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 03:37:01,757 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:01,757 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] [2020-07-20 03:37:01,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-07-20 03:37:01,757 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:01,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:01,757 INFO L82 PathProgramCache]: Analyzing trace with hash -210289620, now seen corresponding path program 1 times [2020-07-20 03:37:01,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:01,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217503782] [2020-07-20 03:37:01,758 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:37:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:01,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217503782] [2020-07-20 03:37:01,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:01,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:01,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610839086] [2020-07-20 03:37:01,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:01,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:01,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:01,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:01,780 INFO L87 Difference]: Start difference. First operand 8072 states and 10758 transitions. Second operand 3 states. [2020-07-20 03:37:01,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:01,995 INFO L93 Difference]: Finished difference Result 13708 states and 18568 transitions. [2020-07-20 03:37:01,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:01,995 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-07-20 03:37:01,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:02,024 INFO L225 Difference]: With dead ends: 13708 [2020-07-20 03:37:02,025 INFO L226 Difference]: Without dead ends: 13706 [2020-07-20 03:37:02,028 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 [2020-07-20 03:37:02,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13706 states. [2020-07-20 03:37:02,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13706 to 12168. [2020-07-20 03:37:02,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12168 states. [2020-07-20 03:37:02,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12168 states to 12168 states and 15750 transitions. [2020-07-20 03:37:02,295 INFO L78 Accepts]: Start accepts. Automaton has 12168 states and 15750 transitions. Word has length 29 [2020-07-20 03:37:02,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:02,296 INFO L479 AbstractCegarLoop]: Abstraction has 12168 states and 15750 transitions. [2020-07-20 03:37:02,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:02,296 INFO L276 IsEmpty]: Start isEmpty. Operand 12168 states and 15750 transitions. [2020-07-20 03:37:02,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 03:37:02,316 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:02,316 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] [2020-07-20 03:37:02,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-07-20 03:37:02,317 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:02,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:02,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1221406870, now seen corresponding path program 1 times [2020-07-20 03:37:02,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:02,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414013930] [2020-07-20 03:37:02,318 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:37:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:02,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414013930] [2020-07-20 03:37:02,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:02,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:02,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115710268] [2020-07-20 03:37:02,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:02,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:02,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:02,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:02,343 INFO L87 Difference]: Start difference. First operand 12168 states and 15750 transitions. Second operand 3 states. [2020-07-20 03:37:02,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:02,551 INFO L93 Difference]: Finished difference Result 27788 states and 35976 transitions. [2020-07-20 03:37:02,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:02,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-07-20 03:37:02,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:02,585 INFO L225 Difference]: With dead ends: 27788 [2020-07-20 03:37:02,585 INFO L226 Difference]: Without dead ends: 15754 [2020-07-20 03:37:02,700 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 [2020-07-20 03:37:02,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15754 states. [2020-07-20 03:37:03,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15754 to 15752. [2020-07-20 03:37:03,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15752 states. [2020-07-20 03:37:03,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15752 states to 15752 states and 19974 transitions. [2020-07-20 03:37:03,070 INFO L78 Accepts]: Start accepts. Automaton has 15752 states and 19974 transitions. Word has length 29 [2020-07-20 03:37:03,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:03,070 INFO L479 AbstractCegarLoop]: Abstraction has 15752 states and 19974 transitions. [2020-07-20 03:37:03,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:03,070 INFO L276 IsEmpty]: Start isEmpty. Operand 15752 states and 19974 transitions. [2020-07-20 03:37:03,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 03:37:03,093 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:03,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:03,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-07-20 03:37:03,094 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:03,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:03,094 INFO L82 PathProgramCache]: Analyzing trace with hash 2071172156, now seen corresponding path program 1 times [2020-07-20 03:37:03,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:03,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81049909] [2020-07-20 03:37:03,095 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:37:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:03,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:03,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81049909] [2020-07-20 03:37:03,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:03,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:03,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567043762] [2020-07-20 03:37:03,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:03,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:03,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:03,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:03,126 INFO L87 Difference]: Start difference. First operand 15752 states and 19974 transitions. Second operand 3 states. [2020-07-20 03:37:03,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:03,418 INFO L93 Difference]: Finished difference Result 23820 states and 30216 transitions. [2020-07-20 03:37:03,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:03,419 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-07-20 03:37:03,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:03,450 INFO L225 Difference]: With dead ends: 23820 [2020-07-20 03:37:03,450 INFO L226 Difference]: Without dead ends: 16138 [2020-07-20 03:37:03,466 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 [2020-07-20 03:37:03,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16138 states. [2020-07-20 03:37:03,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16138 to 16136. [2020-07-20 03:37:03,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16136 states. [2020-07-20 03:37:03,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16136 states to 16136 states and 20230 transitions. [2020-07-20 03:37:03,774 INFO L78 Accepts]: Start accepts. Automaton has 16136 states and 20230 transitions. Word has length 30 [2020-07-20 03:37:03,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:03,775 INFO L479 AbstractCegarLoop]: Abstraction has 16136 states and 20230 transitions. [2020-07-20 03:37:03,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:03,775 INFO L276 IsEmpty]: Start isEmpty. Operand 16136 states and 20230 transitions. [2020-07-20 03:37:03,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 03:37:03,795 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:03,796 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:03,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-07-20 03:37:03,796 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:03,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:03,797 INFO L82 PathProgramCache]: Analyzing trace with hash 791308478, now seen corresponding path program 1 times [2020-07-20 03:37:03,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:03,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821186383] [2020-07-20 03:37:03,798 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:37:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:03,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:03,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821186383] [2020-07-20 03:37:03,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:03,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:03,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620127430] [2020-07-20 03:37:03,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:03,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:03,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:03,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:03,819 INFO L87 Difference]: Start difference. First operand 16136 states and 20230 transitions. Second operand 3 states. [2020-07-20 03:37:04,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:04,613 INFO L93 Difference]: Finished difference Result 26636 states and 33544 transitions. [2020-07-20 03:37:04,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:04,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-07-20 03:37:04,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:04,663 INFO L225 Difference]: With dead ends: 26636 [2020-07-20 03:37:04,663 INFO L226 Difference]: Without dead ends: 26634 [2020-07-20 03:37:04,669 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 [2020-07-20 03:37:04,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26634 states. [2020-07-20 03:37:05,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26634 to 24584. [2020-07-20 03:37:05,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24584 states. [2020-07-20 03:37:05,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24584 states to 24584 states and 29958 transitions. [2020-07-20 03:37:05,129 INFO L78 Accepts]: Start accepts. Automaton has 24584 states and 29958 transitions. Word has length 30 [2020-07-20 03:37:05,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:05,129 INFO L479 AbstractCegarLoop]: Abstraction has 24584 states and 29958 transitions. [2020-07-20 03:37:05,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:05,129 INFO L276 IsEmpty]: Start isEmpty. Operand 24584 states and 29958 transitions. [2020-07-20 03:37:05,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 03:37:05,180 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:05,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:37:05,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-07-20 03:37:05,180 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:05,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:05,181 INFO L82 PathProgramCache]: Analyzing trace with hash -219808772, now seen corresponding path program 1 times [2020-07-20 03:37:05,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:05,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903424194] [2020-07-20 03:37:05,182 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:37:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:05,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:05,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903424194] [2020-07-20 03:37:05,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:05,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:05,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297677723] [2020-07-20 03:37:05,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:05,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:05,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:05,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:05,211 INFO L87 Difference]: Start difference. First operand 24584 states and 29958 transitions. Second operand 3 states. [2020-07-20 03:37:05,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:05,765 INFO L93 Difference]: Finished difference Result 55308 states and 66824 transitions. [2020-07-20 03:37:05,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:05,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-07-20 03:37:05,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:05,847 INFO L225 Difference]: With dead ends: 55308 [2020-07-20 03:37:05,848 INFO L226 Difference]: Without dead ends: 31242 [2020-07-20 03:37:05,909 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 [2020-07-20 03:37:05,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31242 states. [2020-07-20 03:37:06,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31242 to 31240. [2020-07-20 03:37:06,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31240 states. [2020-07-20 03:37:06,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31240 states to 31240 states and 36870 transitions. [2020-07-20 03:37:06,732 INFO L78 Accepts]: Start accepts. Automaton has 31240 states and 36870 transitions. Word has length 30 [2020-07-20 03:37:06,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:06,733 INFO L479 AbstractCegarLoop]: Abstraction has 31240 states and 36870 transitions. [2020-07-20 03:37:06,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:06,733 INFO L276 IsEmpty]: Start isEmpty. Operand 31240 states and 36870 transitions. [2020-07-20 03:37:06,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 03:37:06,935 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:06,935 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] [2020-07-20 03:37:06,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-07-20 03:37:06,936 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:06,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:06,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1239024833, now seen corresponding path program 1 times [2020-07-20 03:37:06,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:06,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929315423] [2020-07-20 03:37:06,937 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:37:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:06,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:06,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929315423] [2020-07-20 03:37:06,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:06,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:06,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134661236] [2020-07-20 03:37:06,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:06,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:06,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:06,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:06,965 INFO L87 Difference]: Start difference. First operand 31240 states and 36870 transitions. Second operand 3 states. [2020-07-20 03:37:07,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:07,318 INFO L93 Difference]: Finished difference Result 46860 states and 55048 transitions. [2020-07-20 03:37:07,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:07,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-07-20 03:37:07,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:07,388 INFO L225 Difference]: With dead ends: 46860 [2020-07-20 03:37:07,389 INFO L226 Difference]: Without dead ends: 31754 [2020-07-20 03:37:07,419 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 [2020-07-20 03:37:07,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31754 states. [2020-07-20 03:37:08,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31754 to 31752. [2020-07-20 03:37:08,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31752 states. [2020-07-20 03:37:08,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31752 states to 31752 states and 36870 transitions. [2020-07-20 03:37:08,326 INFO L78 Accepts]: Start accepts. Automaton has 31752 states and 36870 transitions. Word has length 31 [2020-07-20 03:37:08,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:08,327 INFO L479 AbstractCegarLoop]: Abstraction has 31752 states and 36870 transitions. [2020-07-20 03:37:08,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:08,327 INFO L276 IsEmpty]: Start isEmpty. Operand 31752 states and 36870 transitions. [2020-07-20 03:37:08,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 03:37:08,373 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:08,373 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] [2020-07-20 03:37:08,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-07-20 03:37:08,373 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:08,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:08,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1776078785, now seen corresponding path program 1 times [2020-07-20 03:37:08,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:08,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538038552] [2020-07-20 03:37:08,375 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:37:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:08,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538038552] [2020-07-20 03:37:08,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:08,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:08,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774657133] [2020-07-20 03:37:08,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:08,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:08,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:08,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:08,400 INFO L87 Difference]: Start difference. First operand 31752 states and 36870 transitions. Second operand 3 states. [2020-07-20 03:37:09,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:09,179 INFO L93 Difference]: Finished difference Result 51210 states and 58887 transitions. [2020-07-20 03:37:09,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:09,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-07-20 03:37:09,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:09,288 INFO L225 Difference]: With dead ends: 51210 [2020-07-20 03:37:09,288 INFO L226 Difference]: Without dead ends: 51208 [2020-07-20 03:37:09,309 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 [2020-07-20 03:37:09,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51208 states. [2020-07-20 03:37:11,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51208 to 49160. [2020-07-20 03:37:11,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49160 states. [2020-07-20 03:37:11,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49160 states to 49160 states and 55814 transitions. [2020-07-20 03:37:11,124 INFO L78 Accepts]: Start accepts. Automaton has 49160 states and 55814 transitions. Word has length 31 [2020-07-20 03:37:11,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:11,125 INFO L479 AbstractCegarLoop]: Abstraction has 49160 states and 55814 transitions. [2020-07-20 03:37:11,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:11,125 INFO L276 IsEmpty]: Start isEmpty. Operand 49160 states and 55814 transitions. [2020-07-20 03:37:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 03:37:11,190 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:37:11,190 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] [2020-07-20 03:37:11,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-07-20 03:37:11,190 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:37:11,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:37:11,191 INFO L82 PathProgramCache]: Analyzing trace with hash 764961535, now seen corresponding path program 1 times [2020-07-20 03:37:11,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:37:11,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775365060] [2020-07-20 03:37:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c20d47d [2020-07-20 03:37:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:37:11,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:37:11,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775365060] [2020-07-20 03:37:11,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:37:11,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 03:37:11,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519778508] [2020-07-20 03:37:11,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 03:37:11,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:37:11,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 03:37:11,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 03:37:11,215 INFO L87 Difference]: Start difference. First operand 49160 states and 55814 transitions. Second operand 3 states. [2020-07-20 03:37:11,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:37:11,915 INFO L93 Difference]: Finished difference Result 109576 states and 122374 transitions. [2020-07-20 03:37:11,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 03:37:11,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-07-20 03:37:11,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:37:11,917 INFO L225 Difference]: With dead ends: 109576 [2020-07-20 03:37:11,917 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 03:37:12,006 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 [2020-07-20 03:37:12,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 03:37:12,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 03:37:12,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 03:37:12,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 03:37:12,007 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-07-20 03:37:12,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:37:12,007 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 03:37:12,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 03:37:12,007 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 03:37:12,008 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 03:37:12,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-07-20 03:37:12,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 03:37:12,048 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 03:37:12,049 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 03:37:12,049 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 03:37:12,049 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 03:37:12,049 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 03:37:12,049 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 03:37:12,049 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 177) no Hoare annotation was computed. [2020-07-20 03:37:12,049 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-20 03:37:12,050 INFO L268 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-07-20 03:37:12,050 INFO L268 CegarLoopResult]: For program point L44(lines 44 46) no Hoare annotation was computed. [2020-07-20 03:37:12,050 INFO L268 CegarLoopResult]: For program point L168(line 168) no Hoare annotation was computed. [2020-07-20 03:37:12,050 INFO L264 CegarLoopResult]: At program point L168-1(lines 5 177) the Hoare annotation is: false [2020-07-20 03:37:12,050 INFO L268 CegarLoopResult]: For program point L127-1(lines 42 172) no Hoare annotation was computed. [2020-07-20 03:37:12,051 INFO L268 CegarLoopResult]: For program point L152-1(lines 42 172) no Hoare annotation was computed. [2020-07-20 03:37:12,051 INFO L268 CegarLoopResult]: For program point L111-1(lines 42 172) no Hoare annotation was computed. [2020-07-20 03:37:12,051 INFO L268 CegarLoopResult]: For program point L103-1(lines 42 172) no Hoare annotation was computed. [2020-07-20 03:37:12,051 INFO L268 CegarLoopResult]: For program point L128(line 128) no Hoare annotation was computed. [2020-07-20 03:37:12,051 INFO L268 CegarLoopResult]: For program point L95-1(lines 42 172) no Hoare annotation was computed. [2020-07-20 03:37:12,051 INFO L268 CegarLoopResult]: For program point L153(line 153) no Hoare annotation was computed. [2020-07-20 03:37:12,051 INFO L268 CegarLoopResult]: For program point L87-1(lines 42 172) no Hoare annotation was computed. [2020-07-20 03:37:12,051 INFO L268 CegarLoopResult]: For program point L79-1(lines 42 172) no Hoare annotation was computed. [2020-07-20 03:37:12,052 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 177) no Hoare annotation was computed. [2020-07-20 03:37:12,052 INFO L268 CegarLoopResult]: For program point L137-1(lines 42 172) no Hoare annotation was computed. [2020-07-20 03:37:12,052 INFO L268 CegarLoopResult]: For program point L71(lines 71 73) no Hoare annotation was computed. [2020-07-20 03:37:12,052 INFO L268 CegarLoopResult]: For program point L71-2(lines 42 172) no Hoare annotation was computed. [2020-07-20 03:37:12,052 INFO L268 CegarLoopResult]: For program point L162-1(lines 42 172) no Hoare annotation was computed. [2020-07-20 03:37:12,054 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-07-20 03:37:12,054 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 177) the Hoare annotation is: true [2020-07-20 03:37:12,054 INFO L268 CegarLoopResult]: For program point L138(line 138) no Hoare annotation was computed. [2020-07-20 03:37:12,054 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-20 03:37:12,055 INFO L268 CegarLoopResult]: For program point L122-1(lines 42 172) no Hoare annotation was computed. [2020-07-20 03:37:12,055 INFO L268 CegarLoopResult]: For program point L147-1(lines 42 172) no Hoare annotation was computed. [2020-07-20 03:37:12,055 INFO L268 CegarLoopResult]: For program point L123(line 123) no Hoare annotation was computed. [2020-07-20 03:37:12,055 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-20 03:37:12,055 INFO L271 CegarLoopResult]: At program point L173(lines 5 177) the Hoare annotation is: true [2020-07-20 03:37:12,055 INFO L268 CegarLoopResult]: For program point L107-1(lines 42 172) no Hoare annotation was computed. [2020-07-20 03:37:12,055 INFO L268 CegarLoopResult]: For program point L132-1(lines 42 172) no Hoare annotation was computed. [2020-07-20 03:37:12,055 INFO L268 CegarLoopResult]: For program point L99-1(lines 42 172) no Hoare annotation was computed. [2020-07-20 03:37:12,055 INFO L268 CegarLoopResult]: For program point L157-1(lines 42 172) no Hoare annotation was computed. [2020-07-20 03:37:12,056 INFO L268 CegarLoopResult]: For program point L91-1(lines 42 172) no Hoare annotation was computed. [2020-07-20 03:37:12,056 INFO L268 CegarLoopResult]: For program point L83-1(lines 42 172) no Hoare annotation was computed. [2020-07-20 03:37:12,056 INFO L268 CegarLoopResult]: For program point L75-1(lines 42 172) no Hoare annotation was computed. [2020-07-20 03:37:12,056 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-20 03:37:12,056 INFO L268 CegarLoopResult]: For program point L158(line 158) no Hoare annotation was computed. [2020-07-20 03:37:12,056 INFO L268 CegarLoopResult]: For program point L117-1(lines 42 172) no Hoare annotation was computed. [2020-07-20 03:37:12,056 INFO L268 CegarLoopResult]: For program point L142-1(lines 42 172) no Hoare annotation was computed. [2020-07-20 03:37:12,056 INFO L271 CegarLoopResult]: At program point L167-1(lines 42 172) the Hoare annotation is: true [2020-07-20 03:37:12,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:37:12 BoogieIcfgContainer [2020-07-20 03:37:12,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:37:12,074 INFO L168 Benchmark]: Toolchain (without parser) took 15910.36 ms. Allocated memory was 144.7 MB in the beginning and 1.0 GB in the end (delta: 882.9 MB). Free memory was 102.2 MB in the beginning and 334.0 MB in the end (delta: -231.8 MB). Peak memory consumption was 651.1 MB. Max. memory is 7.1 GB. [2020-07-20 03:37:12,080 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 03:37:12,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.20 ms. Allocated memory is still 144.7 MB. Free memory was 102.0 MB in the beginning and 91.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-07-20 03:37:12,083 INFO L168 Benchmark]: Boogie Preprocessor took 138.78 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 91.0 MB in the beginning and 178.6 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-20 03:37:12,083 INFO L168 Benchmark]: RCFGBuilder took 405.72 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 158.7 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-07-20 03:37:12,084 INFO L168 Benchmark]: TraceAbstraction took 15033.30 ms. Allocated memory was 201.3 MB in the beginning and 1.0 GB in the end (delta: 826.3 MB). Free memory was 158.0 MB in the beginning and 334.0 MB in the end (delta: -176.0 MB). Peak memory consumption was 650.3 MB. Max. memory is 7.1 GB. [2020-07-20 03:37:12,087 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 317.20 ms. Allocated memory is still 144.7 MB. Free memory was 102.0 MB in the beginning and 91.0 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.78 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 91.0 MB in the beginning and 178.6 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 405.72 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 158.7 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15033.30 ms. Allocated memory was 201.3 MB in the beginning and 1.0 GB in the end (delta: 826.3 MB). Free memory was 158.0 MB in the beginning and 334.0 MB in the end (delta: -176.0 MB). Peak memory consumption was 650.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 175]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.9s, OverallIterations: 31, TraceHistogramMax: 1, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2877 SDtfs, 1405 SDslu, 1967 SDs, 0 SdLazy, 165 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49160occurred in iteration=30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.3s AutomataMinimizationTime, 31 MinimizatonAttempts, 8224 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 2058 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 808 NumberOfCodeBlocks, 808 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 777 ConstructedInterpolants, 0 QuantifiedInterpolants, 39912 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...