/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 BIGGEST_EQUIVALENCE_CLASS --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/recursive/Fibonacci03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 05:29:13,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 05:29:13,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 05:29:13,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 05:29:13,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 05:29:13,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 05:29:13,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 05:29:13,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 05:29:13,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 05:29:13,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 05:29:13,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 05:29:13,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 05:29:13,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 05:29:13,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 05:29:13,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 05:29:13,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 05:29:13,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 05:29:13,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 05:29:13,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 05:29:13,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 05:29:13,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 05:29:13,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 05:29:13,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 05:29:13,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 05:29:13,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 05:29:13,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 05:29:13,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 05:29:13,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 05:29:13,626 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 05:29:13,641 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 05:29:13,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 05:29:13,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 05:29:13,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 05:29:13,642 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 05:29:13,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 05:29:13,643 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 05:29:13,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 05:29:13,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 05:29:13,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 05:29:13,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 05:29:13,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 05:29:13,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 05:29:13,644 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 05:29:13,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 05:29:13,645 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 05:29:13,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 05:29:13,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 05:29:13,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 05:29:13,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 05:29:13,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 05:29:13,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 05:29:13,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 05:29:13,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 05:29:13,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 05:29:13,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 05:29:13,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 05:29:13,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 05:29:13,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 05:29:13,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS 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 05:29:13,952 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 05:29:13,967 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 05:29:13,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 05:29:13,975 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 05:29:13,975 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 05:29:13,976 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci03.c [2020-07-20 05:29:14,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d208e8205/7ad8b28642154b81a4775d6d07a23808/FLAGf00b244af [2020-07-20 05:29:14,477 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 05:29:14,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Fibonacci03.c [2020-07-20 05:29:14,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d208e8205/7ad8b28642154b81a4775d6d07a23808/FLAGf00b244af [2020-07-20 05:29:14,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d208e8205/7ad8b28642154b81a4775d6d07a23808 [2020-07-20 05:29:14,859 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 05:29:14,862 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 05:29:14,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 05:29:14,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 05:29:14,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 05:29:14,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:29:14" (1/1) ... [2020-07-20 05:29:14,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f14f3c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:14, skipping insertion in model container [2020-07-20 05:29:14,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:29:14" (1/1) ... [2020-07-20 05:29:14,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 05:29:14,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 05:29:15,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:29:15,142 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 05:29:15,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:29:15,177 INFO L208 MainTranslator]: Completed translation [2020-07-20 05:29:15,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:15 WrapperNode [2020-07-20 05:29:15,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 05:29:15,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 05:29:15,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 05:29:15,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 05:29:15,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:15" (1/1) ... [2020-07-20 05:29:15,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:15" (1/1) ... [2020-07-20 05:29:15,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:15" (1/1) ... [2020-07-20 05:29:15,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:15" (1/1) ... [2020-07-20 05:29:15,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:15" (1/1) ... [2020-07-20 05:29:15,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:15" (1/1) ... [2020-07-20 05:29:15,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:15" (1/1) ... [2020-07-20 05:29:15,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 05:29:15,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 05:29:15,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 05:29:15,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 05:29:15,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:15" (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 05:29:15,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 05:29:15,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 05:29:15,357 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-07-20 05:29:15,357 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 05:29:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 05:29:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 05:29:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-07-20 05:29:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 05:29:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 05:29:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 05:29:15,518 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 05:29:15,518 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 05:29:15,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:29:15 BoogieIcfgContainer [2020-07-20 05:29:15,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 05:29:15,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 05:29:15,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 05:29:15,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 05:29:15,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:29:14" (1/3) ... [2020-07-20 05:29:15,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7844eb48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:29:15, skipping insertion in model container [2020-07-20 05:29:15,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:29:15" (2/3) ... [2020-07-20 05:29:15,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7844eb48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:29:15, skipping insertion in model container [2020-07-20 05:29:15,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:29:15" (3/3) ... [2020-07-20 05:29:15,530 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci03.c [2020-07-20 05:29:15,540 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 05:29:15,547 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 05:29:15,560 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 05:29:15,583 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 05:29:15,583 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 05:29:15,584 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 05:29:15,584 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 05:29:15,584 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 05:29:15,584 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 05:29:15,584 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 05:29:15,584 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 05:29:15,602 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-20 05:29:15,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 05:29:15,608 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:15,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:15,610 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:15,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:15,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1900973920, now seen corresponding path program 1 times [2020-07-20 05:29:15,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:15,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841397712] [2020-07-20 05:29:15,626 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@478f6eb3 [2020-07-20 05:29:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:15,836 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 05:29:15,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841397712] [2020-07-20 05:29:15,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:29:15,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 05:29:15,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982403449] [2020-07-20 05:29:15,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 05:29:15,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:15,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 05:29:15,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 05:29:15,863 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-07-20 05:29:15,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:15,986 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-07-20 05:29:15,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 05:29:15,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-20 05:29:15,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:15,999 INFO L225 Difference]: With dead ends: 36 [2020-07-20 05:29:15,999 INFO L226 Difference]: Without dead ends: 22 [2020-07-20 05:29:16,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 05:29:16,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-20 05:29:16,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-20 05:29:16,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 05:29:16,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-07-20 05:29:16,049 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 14 [2020-07-20 05:29:16,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:16,050 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-07-20 05:29:16,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 05:29:16,050 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-07-20 05:29:16,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 05:29:16,052 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:16,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:16,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 05:29:16,053 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:16,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:16,053 INFO L82 PathProgramCache]: Analyzing trace with hash -509871596, now seen corresponding path program 1 times [2020-07-20 05:29:16,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:16,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417195252] [2020-07-20 05:29:16,054 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@478f6eb3 [2020-07-20 05:29:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,137 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 05:29:16,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417195252] [2020-07-20 05:29:16,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:29:16,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 05:29:16,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846562673] [2020-07-20 05:29:16,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 05:29:16,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:16,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 05:29:16,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 05:29:16,142 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 5 states. [2020-07-20 05:29:16,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:16,232 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2020-07-20 05:29:16,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 05:29:16,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-07-20 05:29:16,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:16,235 INFO L225 Difference]: With dead ends: 28 [2020-07-20 05:29:16,235 INFO L226 Difference]: Without dead ends: 24 [2020-07-20 05:29:16,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 05:29:16,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-20 05:29:16,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-07-20 05:29:16,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 05:29:16,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-07-20 05:29:16,245 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2020-07-20 05:29:16,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:16,245 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-07-20 05:29:16,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 05:29:16,246 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-07-20 05:29:16,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 05:29:16,247 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:16,248 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:16,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 05:29:16,248 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:16,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:16,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1203666899, now seen corresponding path program 1 times [2020-07-20 05:29:16,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:16,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044933666] [2020-07-20 05:29:16,250 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@478f6eb3 [2020-07-20 05:29:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 05:29:16,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044933666] [2020-07-20 05:29:16,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253353947] [2020-07-20 05:29:16,368 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20949801 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:16,421 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@20949801 issued 3 check-sat command(s) [2020-07-20 05:29:16,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:16,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 05:29:16,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:16,504 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 05:29:16,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:16,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-07-20 05:29:16,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116590450] [2020-07-20 05:29:16,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 05:29:16,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:16,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 05:29:16,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-20 05:29:16,508 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 9 states. [2020-07-20 05:29:16,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:16,626 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2020-07-20 05:29:16,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 05:29:16,627 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-07-20 05:29:16,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:16,628 INFO L225 Difference]: With dead ends: 39 [2020-07-20 05:29:16,629 INFO L226 Difference]: Without dead ends: 24 [2020-07-20 05:29:16,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-07-20 05:29:16,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-20 05:29:16,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-20 05:29:16,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-20 05:29:16,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-07-20 05:29:16,638 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 27 [2020-07-20 05:29:16,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:16,638 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-07-20 05:29:16,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 05:29:16,639 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-07-20 05:29:16,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 05:29:16,641 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:16,641 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:16,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-07-20 05:29:16,855 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:16,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:16,856 INFO L82 PathProgramCache]: Analyzing trace with hash -603082491, now seen corresponding path program 1 times [2020-07-20 05:29:16,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:16,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411007571] [2020-07-20 05:29:16,857 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@478f6eb3 [2020-07-20 05:29:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:16,978 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-20 05:29:16,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411007571] [2020-07-20 05:29:16,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526178044] [2020-07-20 05:29:16,979 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@486cb1c8 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:17,013 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@486cb1c8 issued 3 check-sat command(s) [2020-07-20 05:29:17,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:17,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 05:29:17,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:17,038 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-20 05:29:17,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:17,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-07-20 05:29:17,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916538302] [2020-07-20 05:29:17,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 05:29:17,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:17,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 05:29:17,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 05:29:17,041 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 7 states. [2020-07-20 05:29:17,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:17,153 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2020-07-20 05:29:17,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 05:29:17,154 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-07-20 05:29:17,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:17,156 INFO L225 Difference]: With dead ends: 42 [2020-07-20 05:29:17,156 INFO L226 Difference]: Without dead ends: 38 [2020-07-20 05:29:17,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-07-20 05:29:17,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-20 05:29:17,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-07-20 05:29:17,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-20 05:29:17,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-07-20 05:29:17,168 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 28 [2020-07-20 05:29:17,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:17,169 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-07-20 05:29:17,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 05:29:17,169 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-07-20 05:29:17,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-20 05:29:17,171 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:17,171 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:17,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:17,386 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:17,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:17,387 INFO L82 PathProgramCache]: Analyzing trace with hash -2046185202, now seen corresponding path program 2 times [2020-07-20 05:29:17,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:17,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136817446] [2020-07-20 05:29:17,389 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@478f6eb3 [2020-07-20 05:29:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 05:29:17,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136817446] [2020-07-20 05:29:17,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062788616] [2020-07-20 05:29:17,521 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@595d749c No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:17,561 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@595d749c issued 3 check-sat command(s) [2020-07-20 05:29:17,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:17,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 05:29:17,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:17,649 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-07-20 05:29:17,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:17,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-07-20 05:29:17,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090050182] [2020-07-20 05:29:17,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 05:29:17,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:17,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 05:29:17,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-07-20 05:29:17,654 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand 12 states. [2020-07-20 05:29:17,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:17,935 INFO L93 Difference]: Finished difference Result 72 states and 107 transitions. [2020-07-20 05:29:17,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 05:29:17,936 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-07-20 05:29:17,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:17,940 INFO L225 Difference]: With dead ends: 72 [2020-07-20 05:29:17,940 INFO L226 Difference]: Without dead ends: 39 [2020-07-20 05:29:17,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-07-20 05:29:17,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-20 05:29:17,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-07-20 05:29:17,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-20 05:29:17,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-07-20 05:29:17,957 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 41 [2020-07-20 05:29:17,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:17,959 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-07-20 05:29:17,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 05:29:17,960 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-07-20 05:29:17,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-07-20 05:29:17,964 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:17,965 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:18,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:18,166 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:18,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:18,166 INFO L82 PathProgramCache]: Analyzing trace with hash -865837754, now seen corresponding path program 3 times [2020-07-20 05:29:18,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:18,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973570778] [2020-07-20 05:29:18,167 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@478f6eb3 [2020-07-20 05:29:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,423 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-20 05:29:18,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973570778] [2020-07-20 05:29:18,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254710784] [2020-07-20 05:29:18,424 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@26c8993b No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:18,467 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@26c8993b issued 3 check-sat command(s) [2020-07-20 05:29:18,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:18,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 05:29:18,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-07-20 05:29:18,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:18,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-07-20 05:29:18,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985471873] [2020-07-20 05:29:18,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 05:29:18,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:18,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 05:29:18,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-20 05:29:18,510 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 9 states. [2020-07-20 05:29:18,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:18,680 INFO L93 Difference]: Finished difference Result 81 states and 112 transitions. [2020-07-20 05:29:18,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 05:29:18,680 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-07-20 05:29:18,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:18,684 INFO L225 Difference]: With dead ends: 81 [2020-07-20 05:29:18,684 INFO L226 Difference]: Without dead ends: 77 [2020-07-20 05:29:18,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-07-20 05:29:18,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-07-20 05:29:18,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2020-07-20 05:29:18,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-07-20 05:29:18,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 99 transitions. [2020-07-20 05:29:18,700 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 99 transitions. Word has length 69 [2020-07-20 05:29:18,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:18,701 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 99 transitions. [2020-07-20 05:29:18,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 05:29:18,701 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 99 transitions. [2020-07-20 05:29:18,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-07-20 05:29:18,703 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:18,703 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 6, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:18,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:18,918 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:18,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:18,918 INFO L82 PathProgramCache]: Analyzing trace with hash 551748881, now seen corresponding path program 4 times [2020-07-20 05:29:18,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:18,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108075661] [2020-07-20 05:29:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@478f6eb3 [2020-07-20 05:29:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:19,287 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 193 proven. 313 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2020-07-20 05:29:19,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108075661] [2020-07-20 05:29:19,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854320425] [2020-07-20 05:29:19,288 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@326f5faa No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:19,372 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@326f5faa issued 3 check-sat command(s) [2020-07-20 05:29:19,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:19,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 05:29:19,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:19,474 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 52 proven. 326 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2020-07-20 05:29:19,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:19,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 15 [2020-07-20 05:29:19,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696374067] [2020-07-20 05:29:19,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-20 05:29:19,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:19,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-20 05:29:19,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-07-20 05:29:19,483 INFO L87 Difference]: Start difference. First operand 71 states and 99 transitions. Second operand 15 states. [2020-07-20 05:29:19,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:19,908 INFO L93 Difference]: Finished difference Result 136 states and 215 transitions. [2020-07-20 05:29:19,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-20 05:29:19,909 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 137 [2020-07-20 05:29:19,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:19,911 INFO L225 Difference]: With dead ends: 136 [2020-07-20 05:29:19,911 INFO L226 Difference]: Without dead ends: 70 [2020-07-20 05:29:19,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=570, Unknown=0, NotChecked=0, Total=756 [2020-07-20 05:29:19,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-20 05:29:19,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2020-07-20 05:29:19,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-07-20 05:29:19,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2020-07-20 05:29:19,924 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 137 [2020-07-20 05:29:19,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:19,924 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2020-07-20 05:29:19,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-20 05:29:19,925 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2020-07-20 05:29:19,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-07-20 05:29:19,927 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:19,927 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 23, 14, 14, 14, 14, 14, 14, 14, 9, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:20,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-20 05:29:20,142 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:20,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:20,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1288458278, now seen corresponding path program 5 times [2020-07-20 05:29:20,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:20,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061681181] [2020-07-20 05:29:20,144 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@478f6eb3 [2020-07-20 05:29:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:20,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 422 proven. 660 refuted. 0 times theorem prover too weak. 1159 trivial. 0 not checked. [2020-07-20 05:29:20,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061681181] [2020-07-20 05:29:20,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045098727] [2020-07-20 05:29:20,656 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@46d8c8ac No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:20,739 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@46d8c8ac issued 3 check-sat command(s) [2020-07-20 05:29:20,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:20,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 05:29:20,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:20,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 103 proven. 653 refuted. 0 times theorem prover too weak. 1485 trivial. 0 not checked. [2020-07-20 05:29:20,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:20,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 17 [2020-07-20 05:29:20,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252821296] [2020-07-20 05:29:20,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-20 05:29:20,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:20,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-20 05:29:20,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-07-20 05:29:20,844 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand 17 states. [2020-07-20 05:29:21,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:21,406 INFO L93 Difference]: Finished difference Result 145 states and 229 transitions. [2020-07-20 05:29:21,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-20 05:29:21,407 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 205 [2020-07-20 05:29:21,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:21,410 INFO L225 Difference]: With dead ends: 145 [2020-07-20 05:29:21,410 INFO L226 Difference]: Without dead ends: 87 [2020-07-20 05:29:21,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=272, Invalid=918, Unknown=0, NotChecked=0, Total=1190 [2020-07-20 05:29:21,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-07-20 05:29:21,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 80. [2020-07-20 05:29:21,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-20 05:29:21,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 107 transitions. [2020-07-20 05:29:21,424 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 107 transitions. Word has length 205 [2020-07-20 05:29:21,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:21,425 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 107 transitions. [2020-07-20 05:29:21,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-20 05:29:21,425 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 107 transitions. [2020-07-20 05:29:21,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-07-20 05:29:21,429 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:21,429 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 38, 23, 23, 23, 23, 23, 23, 23, 15, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:21,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:21,645 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:21,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:21,645 INFO L82 PathProgramCache]: Analyzing trace with hash 2082787635, now seen corresponding path program 6 times [2020-07-20 05:29:21,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:21,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614210820] [2020-07-20 05:29:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@478f6eb3 [2020-07-20 05:29:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:22,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 1358 proven. 1342 refuted. 0 times theorem prover too weak. 3339 trivial. 0 not checked. [2020-07-20 05:29:22,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614210820] [2020-07-20 05:29:22,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256575900] [2020-07-20 05:29:22,679 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6773e46 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:22,784 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6773e46 issued 3 check-sat command(s) [2020-07-20 05:29:22,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:22,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-20 05:29:22,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:23,006 INFO L134 CoverageAnalysis]: Checked inductivity of 6039 backedges. 204 proven. 1348 refuted. 0 times theorem prover too weak. 4487 trivial. 0 not checked. [2020-07-20 05:29:23,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:23,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 19 [2020-07-20 05:29:23,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77639196] [2020-07-20 05:29:23,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-20 05:29:23,012 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:23,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-20 05:29:23,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-07-20 05:29:23,013 INFO L87 Difference]: Start difference. First operand 80 states and 107 transitions. Second operand 19 states. [2020-07-20 05:29:23,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:23,788 INFO L93 Difference]: Finished difference Result 183 states and 301 transitions. [2020-07-20 05:29:23,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-07-20 05:29:23,789 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 328 [2020-07-20 05:29:23,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:23,792 INFO L225 Difference]: With dead ends: 183 [2020-07-20 05:29:23,792 INFO L226 Difference]: Without dead ends: 108 [2020-07-20 05:29:23,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=368, Invalid=1354, Unknown=0, NotChecked=0, Total=1722 [2020-07-20 05:29:23,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-07-20 05:29:23,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 97. [2020-07-20 05:29:23,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-07-20 05:29:23,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 135 transitions. [2020-07-20 05:29:23,807 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 135 transitions. Word has length 328 [2020-07-20 05:29:23,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:23,808 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 135 transitions. [2020-07-20 05:29:23,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-20 05:29:23,808 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 135 transitions. [2020-07-20 05:29:23,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-07-20 05:29:23,816 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:23,817 INFO L422 BasicCegarLoop]: trace histogram [67, 67, 54, 33, 33, 33, 33, 33, 33, 33, 21, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:24,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:24,032 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:24,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:24,033 INFO L82 PathProgramCache]: Analyzing trace with hash -211711407, now seen corresponding path program 7 times [2020-07-20 05:29:24,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:24,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538918168] [2020-07-20 05:29:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@478f6eb3 [2020-07-20 05:29:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:25,434 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 361 proven. 2270 refuted. 0 times theorem prover too weak. 9756 trivial. 0 not checked. [2020-07-20 05:29:25,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538918168] [2020-07-20 05:29:25,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030713897] [2020-07-20 05:29:25,435 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@55ab9098 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:25,601 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@55ab9098 issued 3 check-sat command(s) [2020-07-20 05:29:25,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:25,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-20 05:29:25,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 361 proven. 2270 refuted. 0 times theorem prover too weak. 9756 trivial. 0 not checked. [2020-07-20 05:29:25,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:25,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-07-20 05:29:25,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147686452] [2020-07-20 05:29:25,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 05:29:25,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:25,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 05:29:25,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-07-20 05:29:25,878 INFO L87 Difference]: Start difference. First operand 97 states and 135 transitions. Second operand 13 states. [2020-07-20 05:29:26,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:26,197 INFO L93 Difference]: Finished difference Result 362 states and 560 transitions. [2020-07-20 05:29:26,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-20 05:29:26,198 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 464 [2020-07-20 05:29:26,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:26,205 INFO L225 Difference]: With dead ends: 362 [2020-07-20 05:29:26,205 INFO L226 Difference]: Without dead ends: 358 [2020-07-20 05:29:26,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 599 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2020-07-20 05:29:26,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-07-20 05:29:26,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 340. [2020-07-20 05:29:26,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-07-20 05:29:26,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 524 transitions. [2020-07-20 05:29:26,269 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 524 transitions. Word has length 464 [2020-07-20 05:29:26,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:26,272 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 524 transitions. [2020-07-20 05:29:26,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 05:29:26,272 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 524 transitions. [2020-07-20 05:29:26,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2020-07-20 05:29:26,306 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:26,306 INFO L422 BasicCegarLoop]: trace histogram [145, 145, 117, 72, 72, 72, 72, 72, 72, 72, 45, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:26,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-20 05:29:26,522 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:26,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:26,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1053342186, now seen corresponding path program 8 times [2020-07-20 05:29:26,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:26,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412994082] [2020-07-20 05:29:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@478f6eb3 [2020-07-20 05:29:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 58770 backedges. 6684 proven. 8074 refuted. 0 times theorem prover too weak. 44012 trivial. 0 not checked. [2020-07-20 05:29:31,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412994082] [2020-07-20 05:29:31,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426027568] [2020-07-20 05:29:31,225 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@196ae1a3 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:31,565 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@196ae1a3 issued 4 check-sat command(s) [2020-07-20 05:29:31,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:31,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 2212 conjuncts, 34 conjunts are in the unsatisfiable core [2020-07-20 05:29:31,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:32,208 INFO L134 CoverageAnalysis]: Checked inductivity of 58770 backedges. 4319 proven. 8086 refuted. 0 times theorem prover too weak. 46365 trivial. 0 not checked. [2020-07-20 05:29:32,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:32,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 23 [2020-07-20 05:29:32,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770862884] [2020-07-20 05:29:32,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-20 05:29:32,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:32,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-20 05:29:32,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2020-07-20 05:29:32,212 INFO L87 Difference]: Start difference. First operand 340 states and 524 transitions. Second operand 23 states. [2020-07-20 05:29:33,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:33,287 INFO L93 Difference]: Finished difference Result 500 states and 889 transitions. [2020-07-20 05:29:33,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-07-20 05:29:33,288 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 995 [2020-07-20 05:29:33,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:33,294 INFO L225 Difference]: With dead ends: 500 [2020-07-20 05:29:33,295 INFO L226 Difference]: Without dead ends: 167 [2020-07-20 05:29:33,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1347 GetRequests, 1291 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=659, Invalid=2647, Unknown=0, NotChecked=0, Total=3306 [2020-07-20 05:29:33,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-07-20 05:29:33,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 130. [2020-07-20 05:29:33,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-07-20 05:29:33,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 186 transitions. [2020-07-20 05:29:33,318 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 186 transitions. Word has length 995 [2020-07-20 05:29:33,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:33,320 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 186 transitions. [2020-07-20 05:29:33,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-20 05:29:33,320 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 186 transitions. [2020-07-20 05:29:33,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2020-07-20 05:29:33,366 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:29:33,366 INFO L422 BasicCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:29:33,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:33,580 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:29:33,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:29:33,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1020040988, now seen corresponding path program 9 times [2020-07-20 05:29:33,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:29:33,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739001170] [2020-07-20 05:29:33,581 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@478f6eb3 [2020-07-20 05:29:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:29:37,232 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2020-07-20 05:29:37,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739001170] [2020-07-20 05:29:37,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989950896] [2020-07-20 05:29:37,233 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4ed0cefd No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:37,472 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4ed0cefd issued 4 check-sat command(s) [2020-07-20 05:29:37,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 05:29:37,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 220 conjunts are in the unsatisfiable core [2020-07-20 05:29:37,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 05:29:38,104 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2020-07-20 05:29:38,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 05:29:38,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 36 [2020-07-20 05:29:38,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523353632] [2020-07-20 05:29:38,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-07-20 05:29:38,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:29:38,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-07-20 05:29:38,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1013, Unknown=0, NotChecked=0, Total=1260 [2020-07-20 05:29:38,108 INFO L87 Difference]: Start difference. First operand 130 states and 186 transitions. Second operand 36 states. [2020-07-20 05:29:38,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:29:38,366 INFO L93 Difference]: Finished difference Result 131 states and 187 transitions. [2020-07-20 05:29:38,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-07-20 05:29:38,367 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 750 [2020-07-20 05:29:38,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:29:38,368 INFO L225 Difference]: With dead ends: 131 [2020-07-20 05:29:38,369 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 05:29:38,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1191 GetRequests, 1156 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=271, Invalid=1061, Unknown=0, NotChecked=0, Total=1332 [2020-07-20 05:29:38,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 05:29:38,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 05:29:38,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 05:29:38,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 05:29:38,371 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 750 [2020-07-20 05:29:38,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:29:38,371 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 05:29:38,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-07-20 05:29:38,372 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 05:29:38,372 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 05:29:38,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 05:29:38,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 05:29:39,336 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 44 [2020-07-20 05:29:39,339 INFO L268 CegarLoopResult]: For program point fibonacciFINAL(lines 14 22) no Hoare annotation was computed. [2020-07-20 05:29:39,339 INFO L271 CegarLoopResult]: At program point fibonacciENTRY(lines 14 22) the Hoare annotation is: true [2020-07-20 05:29:39,339 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (<= 2 |fibonacci_#in~n|) (= fibonacci_~n |fibonacci_#in~n|)) [2020-07-20 05:29:39,340 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-07-20 05:29:39,340 INFO L264 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse0 (<= 1 |fibonacci_#t~ret0|)) (.cse2 (<= 8 |fibonacci_#in~n|)) (.cse1 (= fibonacci_~n |fibonacci_#in~n|))) (or (and .cse0 (<= 2 |fibonacci_#in~n|) .cse1 (<= |fibonacci_#in~n| 2)) (and (<= 8 |fibonacci_#t~ret0|) (<= fibonacci_~n 7) .cse1 (<= 7 |fibonacci_#in~n|)) (and (<= |fibonacci_#in~n| 8) .cse2 .cse1 (<= 13 |fibonacci_#t~ret0|)) (and (<= |fibonacci_#in~n| 5) (<= 3 |fibonacci_#t~ret0|) (<= 5 |fibonacci_#in~n|) .cse1) (and (<= 2 |fibonacci_#t~ret0|) (<= 4 |fibonacci_#in~n|) (<= |fibonacci_#in~n| 4) .cse1) (and (<= 5 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 6) (<= 6 fibonacci_~n) .cse1) (and .cse0 (<= 3 fibonacci_~n) .cse1 (<= |fibonacci_#in~n| 3)) (and .cse2 .cse1 (<= 21 |fibonacci_#t~ret0|)))) [2020-07-20 05:29:39,340 INFO L268 CegarLoopResult]: For program point fibonacciEXIT(lines 14 22) no Hoare annotation was computed. [2020-07-20 05:29:39,340 INFO L268 CegarLoopResult]: For program point L17(lines 17 21) no Hoare annotation was computed. [2020-07-20 05:29:39,340 INFO L268 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2020-07-20 05:29:39,340 INFO L268 CegarLoopResult]: For program point L15(lines 15 21) no Hoare annotation was computed. [2020-07-20 05:29:39,340 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 05:29:39,340 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 05:29:39,340 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 05:29:39,341 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 05:29:39,341 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 05:29:39,341 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 05:29:39,341 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 34) no Hoare annotation was computed. [2020-07-20 05:29:39,341 INFO L268 CegarLoopResult]: For program point L31(lines 31 35) no Hoare annotation was computed. [2020-07-20 05:29:39,341 INFO L271 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: true [2020-07-20 05:29:39,341 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 25 36) the Hoare annotation is: true [2020-07-20 05:29:39,341 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-07-20 05:29:39,341 INFO L268 CegarLoopResult]: For program point L27(lines 27 29) no Hoare annotation was computed. [2020-07-20 05:29:39,342 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 25 36) no Hoare annotation was computed. [2020-07-20 05:29:39,342 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 25 36) no Hoare annotation was computed. [2020-07-20 05:29:39,342 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-20 05:29:39,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:29:39 BoogieIcfgContainer [2020-07-20 05:29:39,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 05:29:39,349 INFO L168 Benchmark]: Toolchain (without parser) took 24489.20 ms. Allocated memory was 136.3 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 100.9 MB in the beginning and 145.2 MB in the end (delta: -44.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2020-07-20 05:29:39,350 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 136.3 MB. Free memory is still 119.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 05:29:39,350 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.37 ms. Allocated memory is still 136.3 MB. Free memory was 100.9 MB in the beginning and 91.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-20 05:29:39,351 INFO L168 Benchmark]: Boogie Preprocessor took 40.46 ms. Allocated memory is still 136.3 MB. Free memory was 91.5 MB in the beginning and 90.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-07-20 05:29:39,352 INFO L168 Benchmark]: RCFGBuilder took 302.63 ms. Allocated memory was 136.3 MB in the beginning and 199.2 MB in the end (delta: 62.9 MB). Free memory was 89.8 MB in the beginning and 166.2 MB in the end (delta: -76.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-20 05:29:39,353 INFO L168 Benchmark]: TraceAbstraction took 23824.47 ms. Allocated memory was 199.2 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 166.2 MB in the beginning and 145.2 MB in the end (delta: 21.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2020-07-20 05:29:39,356 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 136.3 MB. Free memory is still 119.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 315.37 ms. Allocated memory is still 136.3 MB. Free memory was 100.9 MB in the beginning and 91.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.46 ms. Allocated memory is still 136.3 MB. Free memory was 91.5 MB in the beginning and 90.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 302.63 ms. Allocated memory was 136.3 MB in the beginning and 199.2 MB in the end (delta: 62.9 MB). Free memory was 89.8 MB in the beginning and 166.2 MB in the end (delta: -76.5 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23824.47 ms. Allocated memory was 199.2 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 166.2 MB in the beginning and 145.2 MB in the end (delta: 21.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 23.0s, OverallIterations: 12, TraceHistogramMax: 145, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 331 SDtfs, 818 SDslu, 1522 SDs, 0 SdLazy, 2376 SolverSat, 781 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4396 GetRequests, 4133 SyntacticMatches, 0 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2019 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=340occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 88 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 413 PreInvPairs, 502 NumberOfFragments, 115 HoareAnnotationTreeSize, 413 FomulaSimplifications, 718 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 8 FomulaSimplificationsInter, 2277 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 12.9s InterpolantComputationTime, 6117 NumberOfCodeBlocks, 5802 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 6095 ConstructedInterpolants, 0 QuantifiedInterpolants, 6114111 SizeOfPredicates, 62 NumberOfNonLiveVariables, 6273 ConjunctsInSsa, 344 ConjunctsInUnsatCore, 22 InterpolantComputations, 2 PerfectInterpolantSequences, 192003/227454 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...