/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/MultCommutative-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 19:17:06,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 19:17:06,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 19:17:06,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 19:17:06,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 19:17:06,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 19:17:06,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 19:17:06,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 19:17:06,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 19:17:06,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 19:17:06,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 19:17:06,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 19:17:06,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 19:17:06,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 19:17:06,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 19:17:06,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 19:17:06,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 19:17:06,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 19:17:06,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 19:17:06,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 19:17:06,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 19:17:06,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 19:17:06,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 19:17:06,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 19:17:06,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 19:17:06,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 19:17:06,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 19:17:06,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 19:17:06,556 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 [2020-07-21 19:17:06,591 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 19:17:06,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 19:17:06,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 19:17:06,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 19:17:06,596 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 19:17:06,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 19:17:06,596 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 19:17:06,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 19:17:06,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 19:17:06,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 19:17:06,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 19:17:06,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 19:17:06,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 19:17:06,597 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 19:17:06,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 19:17:06,598 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 19:17:06,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 19:17:06,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 19:17:06,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 19:17:06,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 19:17:06,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 19:17:06,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 19:17:06,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 19:17:06,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 19:17:06,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 19:17:06,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 19:17:06,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:17:06,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 19:17:06,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 19:17:06,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 19:17:06,886 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 19:17:06,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 19:17:06,902 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 19:17:06,904 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 19:17:06,904 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 19:17:06,905 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-07-21 19:17:06,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/110640202/24cf5a1f20aa4f8e95df9ca96eaf9cc4/FLAGb55cc6bd7 [2020-07-21 19:17:07,399 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 19:17:07,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-07-21 19:17:07,406 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/110640202/24cf5a1f20aa4f8e95df9ca96eaf9cc4/FLAGb55cc6bd7 [2020-07-21 19:17:07,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/110640202/24cf5a1f20aa4f8e95df9ca96eaf9cc4 [2020-07-21 19:17:07,806 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 19:17:07,808 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 19:17:07,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 19:17:07,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 19:17:07,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 19:17:07,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:17:07" (1/1) ... [2020-07-21 19:17:07,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7011c986 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:17:07, skipping insertion in model container [2020-07-21 19:17:07,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:17:07" (1/1) ... [2020-07-21 19:17:07,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 19:17:07,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 19:17:07,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:17:08,000 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 19:17:08,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:17:08,027 INFO L208 MainTranslator]: Completed translation [2020-07-21 19:17:08,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:17:08 WrapperNode [2020-07-21 19:17:08,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 19:17:08,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 19:17:08,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 19:17:08,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 19:17:08,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:17:08" (1/1) ... [2020-07-21 19:17:08,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:17:08" (1/1) ... [2020-07-21 19:17:08,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:17:08" (1/1) ... [2020-07-21 19:17:08,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:17:08" (1/1) ... [2020-07-21 19:17:08,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:17:08" (1/1) ... [2020-07-21 19:17:08,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:17:08" (1/1) ... [2020-07-21 19:17:08,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:17:08" (1/1) ... [2020-07-21 19:17:08,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 19:17:08,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 19:17:08,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 19:17:08,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 19:17:08,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:17:08" (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 [2020-07-21 19:17:08,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 19:17:08,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 19:17:08,194 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-07-21 19:17:08,194 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 19:17:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 19:17:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 19:17:08,195 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-07-21 19:17:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 19:17:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 19:17:08,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 19:17:08,386 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 19:17:08,386 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 19:17:08,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:17:08 BoogieIcfgContainer [2020-07-21 19:17:08,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 19:17:08,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 19:17:08,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 19:17:08,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 19:17:08,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:17:07" (1/3) ... [2020-07-21 19:17:08,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7946e667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:17:08, skipping insertion in model container [2020-07-21 19:17:08,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:17:08" (2/3) ... [2020-07-21 19:17:08,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7946e667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:17:08, skipping insertion in model container [2020-07-21 19:17:08,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:17:08" (3/3) ... [2020-07-21 19:17:08,402 INFO L109 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2020-07-21 19:17:08,414 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 19:17:08,422 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 19:17:08,440 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 19:17:08,468 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 19:17:08,468 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 19:17:08,468 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 19:17:08,469 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 19:17:08,469 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 19:17:08,469 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 19:17:08,469 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 19:17:08,469 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 19:17:08,492 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-21 19:17:08,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 19:17:08,499 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:17:08,500 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:17:08,500 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:17:08,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:17:08,510 INFO L82 PathProgramCache]: Analyzing trace with hash -962219036, now seen corresponding path program 1 times [2020-07-21 19:17:08,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:17:08,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286926209] [2020-07-21 19:17:08,520 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:17:08,602 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 19:17:08,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:17:08,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 19:17:08,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:17:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 19:17:08,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:17:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 19:17:08,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286926209] [2020-07-21 19:17:08,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 19:17:08,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 19:17:08,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756508806] [2020-07-21 19:17:08,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 19:17:08,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:17:08,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 19:17:08,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 19:17:08,820 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 6 states. [2020-07-21 19:17:08,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:17:08,949 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2020-07-21 19:17:08,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 19:17:08,952 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-07-21 19:17:08,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:17:08,963 INFO L225 Difference]: With dead ends: 41 [2020-07-21 19:17:08,963 INFO L226 Difference]: Without dead ends: 25 [2020-07-21 19:17:08,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 19:17:08,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-21 19:17:09,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-21 19:17:09,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-21 19:17:09,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-07-21 19:17:09,019 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 23 [2020-07-21 19:17:09,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:17:09,020 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-07-21 19:17:09,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 19:17:09,021 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2020-07-21 19:17:09,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 19:17:09,024 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:17:09,024 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:17:09,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:17:09,240 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:17:09,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:17:09,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1472914703, now seen corresponding path program 1 times [2020-07-21 19:17:09,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:17:09,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360402002] [2020-07-21 19:17:09,243 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:17:09,287 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 19:17:09,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:17:09,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 19:17:09,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:17:09,322 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-21 19:17:09,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:17:09,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360402002] [2020-07-21 19:17:09,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:17:09,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 19:17:09,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743889855] [2020-07-21 19:17:09,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 19:17:09,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:17:09,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 19:17:09,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 19:17:09,327 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand 5 states. [2020-07-21 19:17:09,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:17:09,402 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-07-21 19:17:09,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 19:17:09,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-21 19:17:09,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:17:09,405 INFO L225 Difference]: With dead ends: 29 [2020-07-21 19:17:09,405 INFO L226 Difference]: Without dead ends: 25 [2020-07-21 19:17:09,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 19:17:09,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-21 19:17:09,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-21 19:17:09,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-21 19:17:09,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2020-07-21 19:17:09,415 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 30 [2020-07-21 19:17:09,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:17:09,415 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-07-21 19:17:09,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 19:17:09,416 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2020-07-21 19:17:09,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-21 19:17:09,417 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:17:09,418 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:17:09,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:17:09,632 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:17:09,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:17:09,633 INFO L82 PathProgramCache]: Analyzing trace with hash 746268336, now seen corresponding path program 2 times [2020-07-21 19:17:09,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:17:09,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465217093] [2020-07-21 19:17:09,635 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:17:09,688 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:17:09,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:17:09,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 41 conjunts are in the unsatisfiable core [2020-07-21 19:17:09,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:17:09,870 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 19:17:09,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:17:10,047 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 19:17:10,050 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 19:17:10,201 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:17:10,203 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:17:10,205 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:17:10,207 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:17:10,209 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:17:10,210 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:17:10,211 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:17:10,212 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:17:10,550 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 19:17:10,553 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:17:10,555 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:17:10,557 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:17:10,558 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:17:10,559 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:17:10,561 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:17:10,563 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 19:17:10,565 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:17:10,566 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:17:10,567 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:17:10,569 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:17:10,571 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 19:17:10,597 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 19:17:10,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465217093] [2020-07-21 19:17:10,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 19:17:10,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 22 [2020-07-21 19:17:10,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838130564] [2020-07-21 19:17:10,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-21 19:17:10,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:17:10,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-21 19:17:10,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2020-07-21 19:17:10,601 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 22 states. [2020-07-21 19:17:10,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:17:10,980 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-07-21 19:17:10,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 19:17:10,982 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 37 [2020-07-21 19:17:10,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:17:10,984 INFO L225 Difference]: With dead ends: 40 [2020-07-21 19:17:10,986 INFO L226 Difference]: Without dead ends: 36 [2020-07-21 19:17:10,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2020-07-21 19:17:10,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-21 19:17:11,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-07-21 19:17:11,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-21 19:17:11,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2020-07-21 19:17:11,009 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 37 [2020-07-21 19:17:11,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:17:11,011 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2020-07-21 19:17:11,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-21 19:17:11,011 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2020-07-21 19:17:11,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-21 19:17:11,017 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:17:11,018 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:17:11,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:17:11,233 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:17:11,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:17:11,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1882602408, now seen corresponding path program 1 times [2020-07-21 19:17:11,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:17:11,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044214754] [2020-07-21 19:17:11,235 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:17:11,277 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:17:11,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:17:11,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 19:17:11,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:17:11,324 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-07-21 19:17:11,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:17:11,427 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:17:11,428 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:17:11,466 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-07-21 19:17:11,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044214754] [2020-07-21 19:17:11,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 19:17:11,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2020-07-21 19:17:11,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072769080] [2020-07-21 19:17:11,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 19:17:11,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:17:11,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 19:17:11,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-21 19:17:11,470 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand 8 states. [2020-07-21 19:17:11,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:17:11,559 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2020-07-21 19:17:11,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 19:17:11,560 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-07-21 19:17:11,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:17:11,562 INFO L225 Difference]: With dead ends: 39 [2020-07-21 19:17:11,562 INFO L226 Difference]: Without dead ends: 35 [2020-07-21 19:17:11,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 76 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 19:17:11,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-21 19:17:11,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-21 19:17:11,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-21 19:17:11,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2020-07-21 19:17:11,573 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 47 transitions. Word has length 43 [2020-07-21 19:17:11,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:17:11,573 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 47 transitions. [2020-07-21 19:17:11,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 19:17:11,574 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 47 transitions. [2020-07-21 19:17:11,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-21 19:17:11,575 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:17:11,575 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:17:11,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:17:11,789 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:17:11,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:17:11,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1837502139, now seen corresponding path program 3 times [2020-07-21 19:17:11,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:17:11,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970500583] [2020-07-21 19:17:11,792 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:17:11,836 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:17:11,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:17:11,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 57 conjunts are in the unsatisfiable core [2020-07-21 19:17:11,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:17:12,082 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 19:17:12,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:17:12,270 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:17:12,424 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:17:12,424 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:17:12,426 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:17:12,427 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:17:12,560 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:17:12,561 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:17:12,563 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:17:12,563 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:17:12,914 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:17:12,916 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:17:12,917 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:17:12,918 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:17:12,919 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:17:12,920 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:17:12,922 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:17:12,924 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:17:12,926 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:17:14,979 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< |c_mult_#in~m| 1))) (and (or (forall ((v_mult_~n_BEFORE_CALL_10 Int)) (< (div (+ (* v_mult_~n_BEFORE_CALL_10 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 2)) 3)) .cse0) .cse0 (forall ((v_mult_~n_BEFORE_CALL_10 Int)) (let ((.cse1 (* v_mult_~n_BEFORE_CALL_10 (- 1)))) (let ((.cse2 (div .cse1 (- 2)))) (or (<= 3 (div (+ .cse1 (- 1)) (- 2))) (< .cse2 1) (< .cse2 (+ (div (+ .cse1 (* |c_mult_#res| (- 1))) (- 2)) 1)))))) (forall ((v_mult_~n_BEFORE_CALL_10 Int)) (let ((.cse3 (* v_mult_~n_BEFORE_CALL_10 (- 1)))) (or (<= 3 (div (+ .cse3 (- 1)) (- 2))) (< (div .cse3 (- 2)) 1) (< (div (+ .cse3 (* |c_mult_#res| (- 1)) (- 1)) (- 2)) 3)))))) is different from false [2020-07-21 19:17:17,024 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< |c_mult_#in~m| 1))) (and (or (forall ((v_mult_~n_BEFORE_CALL_10 Int)) (< (div (+ (* v_mult_~n_BEFORE_CALL_10 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 2)) 3)) .cse0) (forall ((v_prenex_2 Int)) (let ((.cse1 (* v_prenex_2 (- 1)))) (or (< (div .cse1 (- 2)) 1) (< (div (+ .cse1 (* |c_mult_#res| (- 1)) (- 1)) (- 2)) 3) (<= 3 (div (+ .cse1 (- 1)) (- 2)))))) .cse0 (forall ((v_prenex_1 Int)) (let ((.cse3 (* v_prenex_1 (- 1)))) (let ((.cse2 (div .cse3 (- 2)))) (or (< .cse2 (+ (div (+ .cse3 (* |c_mult_#res| (- 1))) (- 2)) 1)) (< .cse2 1) (<= 3 (div (+ .cse3 (- 1)) (- 2))))))))) is different from false [2020-07-21 19:17:17,104 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 5 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 8 not checked. [2020-07-21 19:17:17,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970500583] [2020-07-21 19:17:17,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 19:17:17,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 35 [2020-07-21 19:17:17,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344176645] [2020-07-21 19:17:17,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-07-21 19:17:17,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:17:17,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-07-21 19:17:17,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=948, Unknown=2, NotChecked=126, Total=1190 [2020-07-21 19:17:17,108 INFO L87 Difference]: Start difference. First operand 35 states and 47 transitions. Second operand 35 states. [2020-07-21 19:17:59,809 WARN L193 SmtUtils]: Spent 42.45 s on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-07-21 19:18:04,721 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-07-21 19:18:05,199 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2020-07-21 19:18:05,802 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-07-21 19:18:06,180 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:18:10,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:18:10,206 INFO L93 Difference]: Finished difference Result 62 states and 85 transitions. [2020-07-21 19:18:10,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-21 19:18:10,206 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 44 [2020-07-21 19:18:10,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:18:10,209 INFO L225 Difference]: With dead ends: 62 [2020-07-21 19:18:10,209 INFO L226 Difference]: Without dead ends: 56 [2020-07-21 19:18:10,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 49.9s TimeCoverageRelationStatistics Valid=207, Invalid=1691, Unknown=2, NotChecked=170, Total=2070 [2020-07-21 19:18:10,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-21 19:18:10,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 44. [2020-07-21 19:18:10,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-21 19:18:10,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 66 transitions. [2020-07-21 19:18:10,229 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 66 transitions. Word has length 44 [2020-07-21 19:18:10,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:18:10,229 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 66 transitions. [2020-07-21 19:18:10,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-07-21 19:18:10,229 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 66 transitions. [2020-07-21 19:18:10,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-21 19:18:10,231 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:18:10,231 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:18:10,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:18:10,432 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:18:10,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:18:10,433 INFO L82 PathProgramCache]: Analyzing trace with hash -58046165, now seen corresponding path program 2 times [2020-07-21 19:18:10,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:18:10,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526216658] [2020-07-21 19:18:10,435 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:18:10,479 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:18:10,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:18:10,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 19:18:10,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:18:10,542 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-07-21 19:18:10,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:18:10,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526216658] [2020-07-21 19:18:10,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:18:10,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 19:18:10,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500372295] [2020-07-21 19:18:10,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 19:18:10,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:18:10,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 19:18:10,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 19:18:10,545 INFO L87 Difference]: Start difference. First operand 44 states and 66 transitions. Second operand 5 states. [2020-07-21 19:18:10,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:18:10,826 INFO L93 Difference]: Finished difference Result 72 states and 117 transitions. [2020-07-21 19:18:10,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 19:18:10,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2020-07-21 19:18:10,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:18:10,836 INFO L225 Difference]: With dead ends: 72 [2020-07-21 19:18:10,836 INFO L226 Difference]: Without dead ends: 44 [2020-07-21 19:18:10,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 19:18:10,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-21 19:18:10,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-21 19:18:10,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-21 19:18:10,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 63 transitions. [2020-07-21 19:18:10,849 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 63 transitions. Word has length 56 [2020-07-21 19:18:10,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:18:10,850 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 63 transitions. [2020-07-21 19:18:10,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 19:18:10,850 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 63 transitions. [2020-07-21 19:18:10,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-21 19:18:10,853 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:18:10,853 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:18:11,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:18:11,055 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:18:11,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:18:11,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1146349017, now seen corresponding path program 4 times [2020-07-21 19:18:11,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:18:11,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44791852] [2020-07-21 19:18:11,058 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:18:11,091 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:18:11,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:18:11,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 57 conjunts are in the unsatisfiable core [2020-07-21 19:18:11,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:18:12,321 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 19:18:12,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:18:13,083 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:18:13,084 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:18:13,824 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:13,825 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:13,826 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:18:13,832 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:18:13,834 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:15,904 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 19:18:15,905 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:16,395 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:16,396 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:16,397 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 19:18:16,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44791852] [2020-07-21 19:18:16,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 19:18:16,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 32 [2020-07-21 19:18:16,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380234944] [2020-07-21 19:18:16,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-07-21 19:18:16,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:18:16,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-07-21 19:18:16,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=884, Unknown=0, NotChecked=0, Total=992 [2020-07-21 19:18:16,609 INFO L87 Difference]: Start difference. First operand 44 states and 63 transitions. Second operand 32 states. [2020-07-21 19:18:19,219 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:18:19,592 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 19:18:21,869 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 19:18:22,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:18:22,676 INFO L93 Difference]: Finished difference Result 78 states and 116 transitions. [2020-07-21 19:18:22,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-21 19:18:22,685 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 44 [2020-07-21 19:18:22,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:18:22,688 INFO L225 Difference]: With dead ends: 78 [2020-07-21 19:18:22,688 INFO L226 Difference]: Without dead ends: 67 [2020-07-21 19:18:22,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=346, Invalid=2204, Unknown=0, NotChecked=0, Total=2550 [2020-07-21 19:18:22,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-21 19:18:22,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 51. [2020-07-21 19:18:22,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-07-21 19:18:22,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 78 transitions. [2020-07-21 19:18:22,707 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 78 transitions. Word has length 44 [2020-07-21 19:18:22,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:18:22,707 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 78 transitions. [2020-07-21 19:18:22,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-07-21 19:18:22,707 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 78 transitions. [2020-07-21 19:18:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-21 19:18:22,709 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:18:22,709 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:18:22,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:18:22,913 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:18:22,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:18:22,914 INFO L82 PathProgramCache]: Analyzing trace with hash 912513436, now seen corresponding path program 5 times [2020-07-21 19:18:22,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:18:22,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092232123] [2020-07-21 19:18:22,915 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:18:22,964 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:18:22,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:18:22,967 WARN L261 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 96 conjunts are in the unsatisfiable core [2020-07-21 19:18:22,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:18:24,787 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 14 proven. 84 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-07-21 19:18:24,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:18:26,030 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:27,106 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:27,107 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 4 conjuncts [2020-07-21 19:18:27,932 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 19:18:27,933 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:27,934 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:27,935 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:28,527 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:28,528 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 4 conjuncts [2020-07-21 19:18:29,493 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-07-21 19:18:29,868 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-07-21 19:18:31,154 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-07-21 19:18:31,261 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:18:31,370 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-07-21 19:18:31,476 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-07-21 19:18:31,729 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 19:18:32,442 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 19:18:32,443 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:32,444 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:32,445 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:32,887 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:32,888 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 4 conjuncts [2020-07-21 19:18:32,889 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 16 proven. 116 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-07-21 19:18:33,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092232123] [2020-07-21 19:18:33,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 19:18:33,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24] total 36 [2020-07-21 19:18:33,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494349042] [2020-07-21 19:18:33,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-07-21 19:18:33,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:18:33,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-07-21 19:18:33,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1126, Unknown=0, NotChecked=0, Total=1260 [2020-07-21 19:18:33,662 INFO L87 Difference]: Start difference. First operand 51 states and 78 transitions. Second operand 36 states. [2020-07-21 19:18:34,712 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2020-07-21 19:18:34,992 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2020-07-21 19:18:35,256 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2020-07-21 19:18:35,740 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2020-07-21 19:18:36,200 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2020-07-21 19:18:36,708 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2020-07-21 19:18:39,895 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2020-07-21 19:18:40,463 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2020-07-21 19:18:41,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:18:41,302 INFO L93 Difference]: Finished difference Result 78 states and 112 transitions. [2020-07-21 19:18:41,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-21 19:18:41,302 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 65 [2020-07-21 19:18:41,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:18:41,304 INFO L225 Difference]: With dead ends: 78 [2020-07-21 19:18:41,304 INFO L226 Difference]: Without dead ends: 68 [2020-07-21 19:18:41,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 79 SyntacticMatches, 16 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=351, Invalid=2511, Unknown=0, NotChecked=0, Total=2862 [2020-07-21 19:18:41,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-21 19:18:41,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2020-07-21 19:18:41,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-21 19:18:41,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 87 transitions. [2020-07-21 19:18:41,318 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 87 transitions. Word has length 65 [2020-07-21 19:18:41,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:18:41,318 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 87 transitions. [2020-07-21 19:18:41,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-07-21 19:18:41,318 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 87 transitions. [2020-07-21 19:18:41,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-07-21 19:18:41,320 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:18:41,320 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:18:41,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:18:41,524 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:18:41,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:18:41,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1850137581, now seen corresponding path program 6 times [2020-07-21 19:18:41,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:18:41,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965053860] [2020-07-21 19:18:41,526 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:18:41,593 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:18:41,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:18:41,598 WARN L261 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 109 conjunts are in the unsatisfiable core [2020-07-21 19:18:41,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:18:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 10 proven. 103 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-07-21 19:18:42,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:18:44,751 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:46,251 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:46,252 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:46,253 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:47,505 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:48,503 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:49,328 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:49,884 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:49,885 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:49,886 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:52,061 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:53,088 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:53,090 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:53,090 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:18:53,173 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 26 proven. 156 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-21 19:18:53,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965053860] [2020-07-21 19:18:53,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 19:18:53,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 29] total 40 [2020-07-21 19:18:53,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947064281] [2020-07-21 19:18:53,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-07-21 19:18:53,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:18:53,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-07-21 19:18:53,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1433, Unknown=0, NotChecked=0, Total=1560 [2020-07-21 19:18:53,176 INFO L87 Difference]: Start difference. First operand 56 states and 87 transitions. Second operand 40 states. [2020-07-21 19:18:55,976 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:18:58,603 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 19:19:03,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:19:03,053 INFO L93 Difference]: Finished difference Result 88 states and 136 transitions. [2020-07-21 19:19:03,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-21 19:19:03,053 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 72 [2020-07-21 19:19:03,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:19:03,056 INFO L225 Difference]: With dead ends: 88 [2020-07-21 19:19:03,056 INFO L226 Difference]: Without dead ends: 78 [2020-07-21 19:19:03,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 101 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=431, Invalid=3601, Unknown=0, NotChecked=0, Total=4032 [2020-07-21 19:19:03,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-21 19:19:03,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 64. [2020-07-21 19:19:03,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-21 19:19:03,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 109 transitions. [2020-07-21 19:19:03,072 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 109 transitions. Word has length 72 [2020-07-21 19:19:03,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:19:03,073 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 109 transitions. [2020-07-21 19:19:03,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-07-21 19:19:03,073 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 109 transitions. [2020-07-21 19:19:03,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-21 19:19:03,075 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:19:03,075 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:19:03,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:19:03,281 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:19:03,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:19:03,282 INFO L82 PathProgramCache]: Analyzing trace with hash -272057979, now seen corresponding path program 7 times [2020-07-21 19:19:03,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:19:03,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56560169] [2020-07-21 19:19:03,283 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:19:03,339 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:19:03,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:19:03,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 81 conjunts are in the unsatisfiable core [2020-07-21 19:19:03,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:19:04,994 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 27 proven. 59 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-07-21 19:19:04,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:19:06,265 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:19:06,660 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:19:08,270 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:19:08,271 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:19:09,556 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:09,557 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:09,558 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:19:10,692 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:10,693 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:19:11,531 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:11,532 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:11,533 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:19:11,534 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:19:13,522 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 19:19:13,527 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:13,528 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:13,528 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:19:13,529 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:19:13,529 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:19:13,530 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:19:13,530 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:19:13,531 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:15,577 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< |c_mult_#in~m| 1))) (and .cse0 (or .cse0 (forall ((v_mult_~n_BEFORE_CALL_52 Int)) (< (div (+ (* v_mult_~n_BEFORE_CALL_52 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 4)) 3))) (forall ((v_mult_~n_BEFORE_CALL_52 Int)) (let ((.cse1 (* v_mult_~n_BEFORE_CALL_52 (- 1)))) (or (< (div (+ .cse1 (* |c_mult_#res| (- 1)) (- 1)) (- 4)) 3) (< (div .cse1 (- 4)) 1) (<= 3 (div (+ .cse1 (- 1)) (- 4)))))) (forall ((v_mult_~n_BEFORE_CALL_52 Int)) (let ((.cse3 (* v_mult_~n_BEFORE_CALL_52 (- 1)))) (let ((.cse2 (div .cse3 (- 4)))) (or (< .cse2 1) (<= 3 (div (+ .cse3 (- 1)) (- 4))) (< .cse2 (+ (div (+ .cse3 (* |c_mult_#res| (- 1))) (- 4)) 1)))))))) is different from false [2020-07-21 19:19:17,606 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (< |c_mult_#in~m| 1))) (and (forall ((v_prenex_4 Int)) (let ((.cse0 (* v_prenex_4 (- 1)))) (let ((.cse1 (div .cse0 (- 4)))) (or (<= 3 (div (+ .cse0 (- 1)) (- 4))) (< .cse1 (+ (div (+ .cse0 (* |c_mult_#res| (- 1))) (- 4)) 1)) (< .cse1 1))))) (forall ((v_prenex_3 Int)) (let ((.cse2 (* v_prenex_3 (- 1)))) (or (< (div (+ .cse2 (* |c_mult_#res| (- 1)) (- 1)) (- 4)) 3) (<= 3 (div (+ .cse2 (- 1)) (- 4))) (< (div .cse2 (- 4)) 1)))) .cse3 (or .cse3 (forall ((v_mult_~n_BEFORE_CALL_52 Int)) (< (div (+ (* v_mult_~n_BEFORE_CALL_52 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 4)) 3))))) is different from false [2020-07-21 19:19:17,897 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 5 proven. 87 refuted. 0 times theorem prover too weak. 21 trivial. 12 not checked. [2020-07-21 19:19:17,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56560169] [2020-07-21 19:19:17,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 19:19:17,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26] total 45 [2020-07-21 19:19:17,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050408286] [2020-07-21 19:19:17,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-07-21 19:19:17,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:19:17,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-07-21 19:19:17,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1670, Unknown=2, NotChecked=166, Total=1980 [2020-07-21 19:19:17,899 INFO L87 Difference]: Start difference. First operand 64 states and 109 transitions. Second operand 45 states. [2020-07-21 19:19:18,630 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-21 19:19:21,209 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 49 DAG size of output: 11 [2020-07-21 19:19:23,034 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-07-21 19:19:23,828 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-07-21 19:19:24,762 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:19:27,861 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 19:19:28,449 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 15 [2020-07-21 19:19:29,055 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-07-21 19:19:30,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:19:30,935 INFO L93 Difference]: Finished difference Result 89 states and 133 transitions. [2020-07-21 19:19:30,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-21 19:19:30,943 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 58 [2020-07-21 19:19:30,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:19:30,945 INFO L225 Difference]: With dead ends: 89 [2020-07-21 19:19:30,945 INFO L226 Difference]: Without dead ends: 80 [2020-07-21 19:19:30,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=414, Invalid=3498, Unknown=2, NotChecked=246, Total=4160 [2020-07-21 19:19:30,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-07-21 19:19:30,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 64. [2020-07-21 19:19:30,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-21 19:19:30,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 105 transitions. [2020-07-21 19:19:30,961 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 105 transitions. Word has length 58 [2020-07-21 19:19:30,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:19:30,961 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 105 transitions. [2020-07-21 19:19:30,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-07-21 19:19:30,962 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 105 transitions. [2020-07-21 19:19:30,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-21 19:19:30,963 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:19:30,963 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:19:31,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:19:31,177 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:19:31,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:19:31,178 INFO L82 PathProgramCache]: Analyzing trace with hash 646393945, now seen corresponding path program 3 times [2020-07-21 19:19:31,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:19:31,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949582660] [2020-07-21 19:19:31,179 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:19:31,236 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:19:31,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:19:31,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 19:19:31,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:19:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 73 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-07-21 19:19:31,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:19:33,072 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:33,073 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:33,523 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 72 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-07-21 19:19:33,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949582660] [2020-07-21 19:19:33,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 19:19:33,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2020-07-21 19:19:33,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13937023] [2020-07-21 19:19:33,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 19:19:33,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:19:33,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 19:19:33,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-07-21 19:19:33,526 INFO L87 Difference]: Start difference. First operand 64 states and 105 transitions. Second operand 12 states. [2020-07-21 19:19:34,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:19:34,071 INFO L93 Difference]: Finished difference Result 99 states and 153 transitions. [2020-07-21 19:19:34,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 19:19:34,080 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-07-21 19:19:34,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:19:34,081 INFO L225 Difference]: With dead ends: 99 [2020-07-21 19:19:34,082 INFO L226 Difference]: Without dead ends: 50 [2020-07-21 19:19:34,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 112 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-07-21 19:19:34,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-21 19:19:34,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-07-21 19:19:34,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-21 19:19:34,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2020-07-21 19:19:34,090 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 64 [2020-07-21 19:19:34,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:19:34,090 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2020-07-21 19:19:34,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 19:19:34,091 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2020-07-21 19:19:34,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-07-21 19:19:34,092 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:19:34,092 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:19:34,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:19:34,308 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:19:34,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:19:34,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1124697265, now seen corresponding path program 8 times [2020-07-21 19:19:34,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:19:34,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167242496] [2020-07-21 19:19:34,310 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:19:34,368 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:19:34,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:19:34,371 WARN L261 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 105 conjunts are in the unsatisfiable core [2020-07-21 19:19:34,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:19:36,831 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 37 proven. 104 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-07-21 19:19:36,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:19:39,213 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:19:40,518 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:19:41,538 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:41,539 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:19:41,539 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:19:41,540 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:19:43,573 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:43,574 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:19:45,416 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:45,417 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:45,418 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:19:46,982 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:46,983 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:46,984 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:19:48,301 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:48,301 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:19:49,383 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:49,384 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:49,384 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:50,827 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:19:51,240 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-07-21 19:19:51,825 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 19:19:51,830 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:51,831 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:51,831 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:51,832 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:19:51,832 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:51,833 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:19:51,835 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:51,835 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:19:51,836 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:19:51,837 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:19:53,856 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (< |c_mult_#in~m| 1))) (and (forall ((v_mult_~n_BEFORE_CALL_66 Int)) (let ((.cse1 (* v_mult_~n_BEFORE_CALL_66 (- 1)))) (let ((.cse0 (div .cse1 (- 6)))) (or (< .cse0 (+ (div (+ .cse1 (* |c_mult_#res| (- 1))) (- 6)) 1)) (<= 3 (div (+ .cse1 (- 1)) (- 6))) (< .cse0 1))))) (or .cse2 (forall ((v_mult_~n_BEFORE_CALL_66 Int)) (< (div (+ (* v_mult_~n_BEFORE_CALL_66 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 6)) 3))) .cse2 (forall ((v_mult_~n_BEFORE_CALL_66 Int)) (let ((.cse3 (* v_mult_~n_BEFORE_CALL_66 (- 1)))) (or (<= 3 (div (+ .cse3 (- 1)) (- 6))) (< (div .cse3 (- 6)) 1) (< (div (+ .cse3 (* |c_mult_#res| (- 1)) (- 1)) (- 6)) 3)))))) is different from false [2020-07-21 19:19:55,883 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< |c_mult_#in~m| 1))) (and (or .cse0 (forall ((v_prenex_5 Int)) (< (div (+ (* v_prenex_5 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 6)) 3))) (forall ((v_mult_~n_BEFORE_CALL_66 Int)) (let ((.cse2 (* v_mult_~n_BEFORE_CALL_66 (- 1)))) (let ((.cse1 (div .cse2 (- 6)))) (or (< .cse1 (+ (div (+ .cse2 (* |c_mult_#res| (- 1))) (- 6)) 1)) (<= 3 (div (+ .cse2 (- 1)) (- 6))) (< .cse1 1))))) (forall ((v_prenex_6 Int)) (let ((.cse3 (* v_prenex_6 (- 1)))) (or (< (div (+ .cse3 (* |c_mult_#res| (- 1)) (- 1)) (- 6)) 3) (< (div .cse3 (- 6)) 1) (<= 3 (div (+ .cse3 (- 1)) (- 6)))))) .cse0)) is different from false [2020-07-21 19:19:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 5 proven. 165 refuted. 0 times theorem prover too weak. 36 trivial. 16 not checked. [2020-07-21 19:19:56,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167242496] [2020-07-21 19:19:56,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 19:19:56,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 32] total 55 [2020-07-21 19:19:56,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201456362] [2020-07-21 19:19:56,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-07-21 19:19:56,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:19:56,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-07-21 19:19:56,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2592, Unknown=2, NotChecked=206, Total=2970 [2020-07-21 19:19:56,287 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand 55 states. [2020-07-21 19:20:38,073 WARN L193 SmtUtils]: Spent 41.07 s on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-07-21 19:20:42,591 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 37 DAG size of output: 11 [2020-07-21 19:20:45,879 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-07-21 19:20:46,585 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:20:52,751 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 19:20:54,540 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 15 [2020-07-21 19:20:55,234 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-07-21 19:20:57,316 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 19:20:58,264 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-21 19:20:58,727 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 19:20:59,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:20:59,528 INFO L93 Difference]: Finished difference Result 82 states and 106 transitions. [2020-07-21 19:20:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-21 19:20:59,543 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 72 [2020-07-21 19:20:59,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:20:59,544 INFO L225 Difference]: With dead ends: 82 [2020-07-21 19:20:59,544 INFO L226 Difference]: Without dead ends: 73 [2020-07-21 19:20:59,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 67.7s TimeCoverageRelationStatistics Valid=540, Invalid=5317, Unknown=3, NotChecked=302, Total=6162 [2020-07-21 19:20:59,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-21 19:20:59,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 60. [2020-07-21 19:20:59,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-21 19:20:59,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 83 transitions. [2020-07-21 19:20:59,556 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 83 transitions. Word has length 72 [2020-07-21 19:20:59,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:20:59,557 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 83 transitions. [2020-07-21 19:20:59,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-07-21 19:20:59,557 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 83 transitions. [2020-07-21 19:20:59,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-21 19:20:59,558 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:20:59,558 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:20:59,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:20:59,773 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:20:59,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:20:59,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1394734426, now seen corresponding path program 9 times [2020-07-21 19:20:59,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:20:59,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067401579] [2020-07-21 19:20:59,775 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:20:59,846 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:20:59,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:20:59,848 WARN L261 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 97 conjunts are in the unsatisfiable core [2020-07-21 19:20:59,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:21:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 4 proven. 83 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-07-21 19:21:01,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:21:02,277 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:21:02,658 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:21:03,154 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:03,726 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:21:04,258 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:04,259 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:04,259 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:05,001 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:05,002 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:05,003 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:05,884 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:21:06,267 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:21:06,662 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:21:07,059 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:21:08,256 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:21:08,639 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:21:09,044 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:21:09,610 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:10,208 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:21:10,590 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:21:11,183 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:11,183 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:11,184 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:11,595 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:21:11,841 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:11,841 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:11,842 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:12,087 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 8 proven. 118 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 19:21:12,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067401579] [2020-07-21 19:21:12,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 19:21:12,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 31 [2020-07-21 19:21:12,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519908531] [2020-07-21 19:21:12,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-21 19:21:12,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:21:12,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-21 19:21:12,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2020-07-21 19:21:12,149 INFO L87 Difference]: Start difference. First operand 60 states and 83 transitions. Second operand 31 states. [2020-07-21 19:21:16,174 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 19:21:17,047 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:21:18,098 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:21:18,633 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-21 19:21:19,230 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 19:21:20,196 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:21:21,122 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 19:21:21,883 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:21:22,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:21:22,754 INFO L93 Difference]: Finished difference Result 85 states and 114 transitions. [2020-07-21 19:21:22,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-07-21 19:21:22,771 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 65 [2020-07-21 19:21:22,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:21:22,773 INFO L225 Difference]: With dead ends: 85 [2020-07-21 19:21:22,773 INFO L226 Difference]: Without dead ends: 73 [2020-07-21 19:21:22,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=337, Invalid=2419, Unknown=0, NotChecked=0, Total=2756 [2020-07-21 19:21:22,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-21 19:21:22,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 58. [2020-07-21 19:21:22,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-07-21 19:21:22,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 77 transitions. [2020-07-21 19:21:22,784 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 77 transitions. Word has length 65 [2020-07-21 19:21:22,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:21:22,784 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 77 transitions. [2020-07-21 19:21:22,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-21 19:21:22,785 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 77 transitions. [2020-07-21 19:21:22,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-21 19:21:22,786 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:21:22,786 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:21:22,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:21:22,994 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:21:22,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:21:22,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1266374702, now seen corresponding path program 10 times [2020-07-21 19:21:22,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:21:22,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040825054] [2020-07-21 19:21:22,996 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:21:23,063 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:21:23,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:21:23,066 WARN L261 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 117 conjunts are in the unsatisfiable core [2020-07-21 19:21:23,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:21:27,059 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 42 proven. 131 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-07-21 19:21:27,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:21:27,943 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:21:28,326 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:21:28,729 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:21:29,127 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:21:29,390 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:21:29,532 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:21:29,931 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:21:30,328 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:21:30,977 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:21:31,400 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2020-07-21 19:21:32,113 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:21:32,498 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:21:32,892 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:21:33,291 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:21:33,686 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:21:34,098 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:21:34,766 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:21:34,767 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:21:35,874 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:21:36,259 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:21:36,656 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:21:37,050 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:21:37,450 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:21:38,145 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 19:21:38,149 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:38,150 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:21:39,315 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:21:39,702 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:21:40,099 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:21:40,493 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:21:41,214 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 19:21:41,218 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:41,220 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:21:41,220 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:42,403 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:21:42,792 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:21:43,193 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:21:43,934 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 19:21:43,938 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:43,939 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:43,940 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:21:45,176 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:21:45,565 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:21:46,321 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 19:21:46,326 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:46,326 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:21:46,327 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:47,608 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:21:48,371 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 19:21:48,376 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:48,377 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:48,377 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:21:50,064 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:50,065 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:50,066 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:51,467 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:21:51,660 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 19:21:51,770 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 19:21:52,427 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:21:53,068 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-07-21 19:21:53,954 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 19:21:53,959 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:53,960 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:53,960 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:21:53,961 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:21:53,961 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:53,961 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:21:53,962 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:21:53,962 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:21:55,991 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< |c_mult_#in~m| 1))) (and (or .cse0 (forall ((v_mult_~n_BEFORE_CALL_94 Int)) (< (div (+ (* v_mult_~n_BEFORE_CALL_94 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 7)) 3))) .cse0 (forall ((v_mult_~n_BEFORE_CALL_94 Int)) (let ((.cse2 (* v_mult_~n_BEFORE_CALL_94 (- 1)))) (let ((.cse1 (div .cse2 (- 7)))) (or (< .cse1 (+ (div (+ .cse2 (* |c_mult_#res| (- 1))) (- 7)) 1)) (<= 3 (div (+ .cse2 (- 1)) (- 7))) (< .cse1 1))))) (forall ((v_mult_~n_BEFORE_CALL_94 Int)) (let ((.cse3 (* v_mult_~n_BEFORE_CALL_94 (- 1)))) (or (<= 3 (div (+ .cse3 (- 1)) (- 7))) (< (div .cse3 (- 7)) 1) (< (div (+ .cse3 (* |c_mult_#res| (- 1)) (- 1)) (- 7)) 3)))))) is different from false [2020-07-21 19:21:58,039 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< |c_mult_#in~m| 1))) (and (or .cse0 (forall ((v_mult_~n_BEFORE_CALL_94 Int)) (< (div (+ (* v_mult_~n_BEFORE_CALL_94 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 7)) 3))) .cse0 (forall ((v_prenex_8 Int)) (let ((.cse1 (* v_prenex_8 (- 1)))) (or (< (div .cse1 (- 7)) 1) (< (div (+ .cse1 (* |c_mult_#res| (- 1)) (- 1)) (- 7)) 3) (<= 3 (div (+ .cse1 (- 1)) (- 7)))))) (forall ((v_prenex_7 Int)) (let ((.cse3 (* v_prenex_7 (- 1)))) (let ((.cse2 (div .cse3 (- 7)))) (or (< .cse2 (+ (div (+ .cse3 (* |c_mult_#res| (- 1))) (- 7)) 1)) (<= 3 (div (+ .cse3 (- 1)) (- 7))) (< .cse2 1))))))) is different from false [2020-07-21 19:21:58,614 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 5 proven. 213 refuted. 0 times theorem prover too weak. 45 trivial. 18 not checked. [2020-07-21 19:21:58,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040825054] [2020-07-21 19:21:58,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 19:21:58,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 35] total 60 [2020-07-21 19:21:58,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271059383] [2020-07-21 19:21:58,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-07-21 19:21:58,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:21:58,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-07-21 19:21:58,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=3128, Unknown=2, NotChecked=226, Total=3540 [2020-07-21 19:21:58,617 INFO L87 Difference]: Start difference. First operand 58 states and 77 transitions. Second operand 60 states. [2020-07-21 19:22:01,795 WARN L193 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 49 DAG size of output: 11 [2020-07-21 19:22:05,856 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-07-21 19:22:06,618 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:22:15,874 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 19:22:17,123 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-21 19:22:17,903 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 19:22:19,528 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 19:22:21,519 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 15 [2020-07-21 19:22:22,259 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-07-21 19:22:23,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:22:23,538 INFO L93 Difference]: Finished difference Result 85 states and 110 transitions. [2020-07-21 19:22:23,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-21 19:22:23,550 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 79 [2020-07-21 19:22:23,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:22:23,552 INFO L225 Difference]: With dead ends: 85 [2020-07-21 19:22:23,552 INFO L226 Difference]: Without dead ends: 76 [2020-07-21 19:22:23,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 96 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 33.5s TimeCoverageRelationStatistics Valid=584, Invalid=6228, Unknown=2, NotChecked=326, Total=7140 [2020-07-21 19:22:23,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-21 19:22:23,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 63. [2020-07-21 19:22:23,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-07-21 19:22:23,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 87 transitions. [2020-07-21 19:22:23,564 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 87 transitions. Word has length 79 [2020-07-21 19:22:23,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:22:23,564 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 87 transitions. [2020-07-21 19:22:23,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-07-21 19:22:23,565 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 87 transitions. [2020-07-21 19:22:23,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-21 19:22:23,566 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:22:23,566 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:22:23,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:22:23,776 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:22:23,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:22:23,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1525719705, now seen corresponding path program 11 times [2020-07-21 19:22:23,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:22:23,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267011718] [2020-07-21 19:22:23,778 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:22:23,856 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:22:23,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:22:23,860 WARN L261 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 133 conjunts are in the unsatisfiable core [2020-07-21 19:22:23,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:22:26,281 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 8 proven. 160 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2020-07-21 19:22:26,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:22:27,069 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:22:27,465 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:22:27,871 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:22:28,280 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:22:28,809 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:22:29,370 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:22:29,764 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:22:30,179 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:22:30,772 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:22:30,773 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:22:30,773 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:22:31,351 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:22:31,753 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:22:32,351 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:22:32,999 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:22:33,584 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:22:34,399 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:22:35,442 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:22:35,839 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:22:36,245 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:22:36,652 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:22:37,051 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:22:38,356 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:22:38,757 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:22:38,922 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:22:39,163 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:22:39,561 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:22:40,188 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:22:41,409 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:22:41,663 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:22:41,806 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:22:42,206 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:22:47,027 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:22:47,032 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:22:47,032 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:22:47,040 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:22:47,530 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2020-07-21 19:22:48,259 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:22:48,660 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:22:49,393 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-07-21 19:22:49,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267011718] [2020-07-21 19:22:49,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 19:22:49,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-07-21 19:22:49,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992054717] [2020-07-21 19:22:49,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-21 19:22:49,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:22:49,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-21 19:22:49,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1508, Unknown=2, NotChecked=0, Total=1640 [2020-07-21 19:22:49,399 INFO L87 Difference]: Start difference. First operand 63 states and 87 transitions. Second operand 19 states. [2020-07-21 19:22:55,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:22:55,188 INFO L93 Difference]: Finished difference Result 73 states and 97 transitions. [2020-07-21 19:22:55,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-21 19:22:55,188 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 86 [2020-07-21 19:22:55,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:22:55,189 INFO L225 Difference]: With dead ends: 73 [2020-07-21 19:22:55,189 INFO L226 Difference]: Without dead ends: 69 [2020-07-21 19:22:55,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 94 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=304, Invalid=2556, Unknown=2, NotChecked=0, Total=2862 [2020-07-21 19:22:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-21 19:22:55,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-07-21 19:22:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-21 19:22:55,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions. [2020-07-21 19:22:55,206 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 90 transitions. Word has length 86 [2020-07-21 19:22:55,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:22:55,207 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 90 transitions. [2020-07-21 19:22:55,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-21 19:22:55,207 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 90 transitions. [2020-07-21 19:22:55,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-07-21 19:22:55,209 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:22:55,211 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:22:55,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:22:55,413 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:22:55,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:22:55,414 INFO L82 PathProgramCache]: Analyzing trace with hash -330893523, now seen corresponding path program 12 times [2020-07-21 19:22:55,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:22:55,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029474116] [2020-07-21 19:22:55,415 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:22:55,508 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:22:55,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:22:55,512 WARN L261 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 181 conjunts are in the unsatisfiable core [2020-07-21 19:22:55,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:22:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 16 proven. 307 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2020-07-21 19:22:59,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:23:00,179 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:23:00,567 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:23:00,970 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:01,388 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:01,797 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:02,196 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:02,603 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:03,008 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:03,656 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:04,384 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:23:04,779 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:23:05,183 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:05,643 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:06,049 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:06,449 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:06,846 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:07,488 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:07,489 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:07,489 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:08,112 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:23:08,496 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:23:08,895 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:09,293 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:09,562 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:23:09,710 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:10,121 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:10,845 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:10,845 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:10,846 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:11,645 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:23:12,037 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:23:12,207 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:23:12,464 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:12,667 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:23:12,804 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:23:12,997 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:13,218 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:23:13,457 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:14,109 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:14,109 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:14,110 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:14,860 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:23:15,245 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:23:15,642 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:16,042 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:16,712 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:17,358 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:23:17,745 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:23:18,146 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:18,830 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:18,830 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:18,831 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:19,481 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:23:19,873 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:23:20,571 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:20,571 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:20,572 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:21,297 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:23:22,000 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:22,001 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:22,002 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:22,718 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 19:23:23,251 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:24,541 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:23:24,941 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:23:25,209 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:23:25,374 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:25,549 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:23:25,669 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:23:25,872 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:26,089 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:23:26,236 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:23:26,450 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:26,667 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 19:23:26,793 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 19:23:28,098 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:23:28,485 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:23:28,881 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:29,281 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:30,038 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:31,439 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:23:31,828 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:23:32,228 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:33,070 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 19:23:33,075 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:33,075 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:23:33,085 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:23:33,658 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-07-21 19:23:34,465 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:23:34,858 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:23:35,735 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-07-21 19:23:35,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029474116] [2020-07-21 19:23:35,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 19:23:35,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-07-21 19:23:35,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317896699] [2020-07-21 19:23:35,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 19:23:35,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:23:35,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 19:23:35,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2787, Unknown=0, NotChecked=0, Total=2970 [2020-07-21 19:23:35,742 INFO L87 Difference]: Start difference. First operand 65 states and 90 transitions. Second operand 25 states. [2020-07-21 19:23:46,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:23:46,975 INFO L93 Difference]: Finished difference Result 76 states and 107 transitions. [2020-07-21 19:23:46,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-21 19:23:46,990 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 114 [2020-07-21 19:23:46,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:23:46,991 INFO L225 Difference]: With dead ends: 76 [2020-07-21 19:23:46,991 INFO L226 Difference]: Without dead ends: 72 [2020-07-21 19:23:46,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 135 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=513, Invalid=4889, Unknown=0, NotChecked=0, Total=5402 [2020-07-21 19:23:46,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-07-21 19:23:47,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2020-07-21 19:23:47,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-21 19:23:47,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 100 transitions. [2020-07-21 19:23:47,002 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 100 transitions. Word has length 114 [2020-07-21 19:23:47,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:23:47,002 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 100 transitions. [2020-07-21 19:23:47,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 19:23:47,003 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions. [2020-07-21 19:23:47,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-21 19:23:47,004 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:23:47,004 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:23:47,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:23:47,209 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:23:47,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:23:47,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1080603673, now seen corresponding path program 13 times [2020-07-21 19:23:47,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:23:47,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061489583] [2020-07-21 19:23:47,210 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:23:47,315 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:23:47,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:23:47,318 WARN L261 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 129 conjunts are in the unsatisfiable core [2020-07-21 19:23:47,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:23:51,917 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 47 proven. 161 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-07-21 19:23:51,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:23:52,859 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:23:53,249 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:23:53,651 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:53,916 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:23:54,060 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:54,225 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:23:54,468 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:54,869 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:55,269 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:55,673 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:56,349 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:23:56,803 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2020-07-21 19:23:57,548 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:23:57,940 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:23:58,351 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:58,754 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:59,165 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:59,572 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:23:59,804 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:23:59,925 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:24:00,116 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:24:00,351 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:24:00,495 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:24:01,116 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 19:24:01,122 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:24:01,122 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:24:01,123 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:24:01,123 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:24:02,318 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:24:02,483 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:24:02,722 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:24:03,127 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:24:03,293 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:24:03,536 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:24:03,802 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:24:03,951 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:24:04,392 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:24:04,563 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:24:04,671 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:24:05,183 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 19:24:05,188 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:24:05,188 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:24:05,189 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:24:06,280 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 19:24:06,531 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 19:24:06,641 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 19:24:06,769 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:24:06,991 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:24:07,133 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:24:07,346 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:24:07,573 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:24:07,717 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:24:07,933 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:24:08,170 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:24:08,318 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:24:08,513 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:24:08,750 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:24:08,876 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:24:09,020 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:24:09,770 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 19:24:09,775 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:24:09,776 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:24:09,776 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:24:11,014 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:24:11,409 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:24:11,811 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:24:12,211 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:24:12,970 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 19:24:12,975 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:24:12,976 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:24:12,977 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:24:14,260 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:24:14,650 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:24:15,057 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:24:15,838 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 19:24:15,843 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:24:15,843 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:24:17,172 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:24:17,559 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:24:18,362 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 19:24:18,367 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:24:18,367 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:24:18,368 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:24:19,759 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:24:20,570 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 19:24:20,574 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:24:20,575 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:24:22,399 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:24:22,399 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:24:22,400 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:24:22,400 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:24:23,903 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:24:24,093 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 19:24:24,205 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 19:24:24,889 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:24:25,574 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-07-21 19:24:26,530 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 19:24:26,535 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:24:26,535 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:24:26,536 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:24:26,536 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:24:26,537 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:24:26,537 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:24:26,538 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:24:26,538 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:24:26,539 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:24:26,539 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:24:28,556 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (< |c_mult_#in~m| 1))) (and (forall ((v_mult_~n_BEFORE_CALL_150 Int)) (let ((.cse0 (* v_mult_~n_BEFORE_CALL_150 (- 1)))) (or (< (div .cse0 (- 8)) 1) (<= 3 (div (+ .cse0 (- 1)) (- 8))) (< (div (+ .cse0 (* |c_mult_#res| (- 1)) (- 1)) (- 8)) 3)))) (or .cse1 (forall ((v_mult_~n_BEFORE_CALL_150 Int)) (< (div (+ (* v_mult_~n_BEFORE_CALL_150 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 8)) 3))) (forall ((v_mult_~n_BEFORE_CALL_150 Int)) (let ((.cse3 (* v_mult_~n_BEFORE_CALL_150 (- 1)))) (let ((.cse2 (div .cse3 (- 8)))) (or (< .cse2 1) (<= 3 (div (+ .cse3 (- 1)) (- 8))) (< .cse2 (+ (div (+ .cse3 (* |c_mult_#res| (- 1))) (- 8)) 1)))))) .cse1)) is different from false [2020-07-21 19:24:30,586 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (< |c_mult_#in~m| 1))) (and (forall ((v_mult_~n_BEFORE_CALL_150 Int)) (let ((.cse0 (* v_mult_~n_BEFORE_CALL_150 (- 1)))) (or (< (div .cse0 (- 8)) 1) (<= 3 (div (+ .cse0 (- 1)) (- 8))) (< (div (+ .cse0 (* |c_mult_#res| (- 1)) (- 1)) (- 8)) 3)))) (forall ((v_prenex_10 Int)) (let ((.cse2 (* v_prenex_10 (- 1)))) (let ((.cse1 (div .cse2 (- 8)))) (or (< .cse1 1) (< .cse1 (+ (div (+ .cse2 (* |c_mult_#res| (- 1))) (- 8)) 1)) (<= 3 (div (+ .cse2 (- 1)) (- 8))))))) .cse3 (or (forall ((v_prenex_9 Int)) (< (div (+ (* |c_mult_#res| (- 1)) (* v_prenex_9 (- 1)) (- 1)) (- 8)) 3)) .cse3))) is different from false [2020-07-21 19:24:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 5 proven. 267 refuted. 0 times theorem prover too weak. 55 trivial. 20 not checked. [2020-07-21 19:24:31,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061489583] [2020-07-21 19:24:31,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 19:24:31,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 38] total 65 [2020-07-21 19:24:31,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212889236] [2020-07-21 19:24:31,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-07-21 19:24:31,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:24:31,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-07-21 19:24:31,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3714, Unknown=2, NotChecked=246, Total=4160 [2020-07-21 19:24:31,473 INFO L87 Difference]: Start difference. First operand 68 states and 100 transitions. Second operand 65 states. [2020-07-21 19:24:35,369 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 49 DAG size of output: 11 [2020-07-21 19:24:40,102 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-07-21 19:24:41,769 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:24:51,200 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 19:24:52,249 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 15 [2020-07-21 19:24:53,824 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-07-21 19:24:56,707 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 19:24:57,781 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-21 19:24:58,349 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 19:25:00,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:25:00,003 INFO L93 Difference]: Finished difference Result 92 states and 125 transitions. [2020-07-21 19:25:00,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-21 19:25:00,019 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 86 [2020-07-21 19:25:00,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:25:00,021 INFO L225 Difference]: With dead ends: 92 [2020-07-21 19:25:00,021 INFO L226 Difference]: Without dead ends: 83 [2020-07-21 19:25:00,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 105 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1331 ImplicationChecksByTransitivity, 39.4s TimeCoverageRelationStatistics Valid=655, Invalid=7361, Unknown=2, NotChecked=354, Total=8372 [2020-07-21 19:25:00,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-07-21 19:25:00,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 70. [2020-07-21 19:25:00,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-21 19:25:00,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 101 transitions. [2020-07-21 19:25:00,030 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 101 transitions. Word has length 86 [2020-07-21 19:25:00,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:25:00,030 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 101 transitions. [2020-07-21 19:25:00,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-07-21 19:25:00,031 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 101 transitions. [2020-07-21 19:25:00,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-07-21 19:25:00,032 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:25:00,032 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:25:00,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:25:00,241 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:25:00,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:25:00,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1343946330, now seen corresponding path program 14 times [2020-07-21 19:25:00,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:25:00,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842972415] [2020-07-21 19:25:00,242 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:25:00,358 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:25:00,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:25:00,361 WARN L261 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 145 conjunts are in the unsatisfiable core [2020-07-21 19:25:00,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:25:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 8 proven. 195 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2020-07-21 19:25:03,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:25:04,037 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:25:04,203 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:25:04,313 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:25:04,462 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:25:04,629 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:04,736 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:04,887 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:05,057 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:05,161 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:05,313 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:05,906 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:25:06,540 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:25:06,808 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:25:06,969 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:25:07,136 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:07,390 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:07,662 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:08,023 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:25:08,023 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:25:08,024 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:25:08,661 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:25:09,064 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:25:09,697 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:25:10,477 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:25:10,665 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:25:11,140 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:25:11,141 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:25:11,142 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:25:12,041 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:25:13,120 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:25:13,529 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:25:13,948 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:14,366 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:14,789 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:15,208 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:16,616 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:25:17,029 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:25:17,449 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:17,617 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:17,871 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:18,045 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:18,166 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:18,365 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:18,585 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:18,720 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:19,150 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:25:20,446 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:25:20,901 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:25:21,101 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:21,232 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:21,411 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:21,592 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:21,701 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:21,853 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:22,023 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:22,142 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:24,684 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:25:24,689 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:25:24,690 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:25:24,690 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:25:30,263 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:25:30,673 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:25:31,095 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:31,368 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:31,910 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-07-21 19:25:31,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842972415] [2020-07-21 19:25:31,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 19:25:31,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-07-21 19:25:31,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16883395] [2020-07-21 19:25:31,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-21 19:25:31,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:25:31,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-21 19:25:31,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1669, Unknown=2, NotChecked=0, Total=1806 [2020-07-21 19:25:31,916 INFO L87 Difference]: Start difference. First operand 70 states and 101 transitions. Second operand 21 states. [2020-07-21 19:25:41,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:25:41,465 INFO L93 Difference]: Finished difference Result 78 states and 107 transitions. [2020-07-21 19:25:41,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-21 19:25:41,481 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 93 [2020-07-21 19:25:41,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:25:41,482 INFO L225 Difference]: With dead ends: 78 [2020-07-21 19:25:41,482 INFO L226 Difference]: Without dead ends: 74 [2020-07-21 19:25:41,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=336, Invalid=2967, Unknown=3, NotChecked=0, Total=3306 [2020-07-21 19:25:41,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-21 19:25:41,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2020-07-21 19:25:41,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-21 19:25:41,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 97 transitions. [2020-07-21 19:25:41,494 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 97 transitions. Word has length 93 [2020-07-21 19:25:41,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:25:41,495 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 97 transitions. [2020-07-21 19:25:41,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-21 19:25:41,495 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 97 transitions. [2020-07-21 19:25:41,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-07-21 19:25:41,497 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:25:41,497 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:25:41,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:25:41,701 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:25:41,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:25:41,701 INFO L82 PathProgramCache]: Analyzing trace with hash -173240844, now seen corresponding path program 15 times [2020-07-21 19:25:41,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:25:41,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236860336] [2020-07-21 19:25:41,702 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:25:41,831 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:25:41,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:25:41,836 WARN L261 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 193 conjunts are in the unsatisfiable core [2020-07-21 19:25:41,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:25:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 18 proven. 352 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2020-07-21 19:25:46,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:25:47,154 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:25:47,564 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:25:47,835 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:47,987 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:48,161 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:48,277 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:48,436 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:48,604 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:48,864 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:49,032 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:49,136 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:49,288 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:49,457 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:49,560 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:49,713 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:49,881 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:49,984 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:50,136 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:50,310 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:50,416 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:50,567 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:51,239 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:25:51,924 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:25:52,341 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:25:52,509 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:52,613 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:52,767 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:53,190 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:53,358 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:53,462 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:53,618 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:53,786 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:53,890 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:54,043 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:54,316 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:54,468 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:54,889 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:55,061 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:55,168 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:55,588 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:25:56,303 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 19:25:56,415 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 19:25:56,568 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:25:56,800 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:25:56,943 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:25:57,131 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:25:57,300 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:57,405 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:57,558 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:57,731 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:57,979 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:58,147 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:58,406 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:58,577 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:58,830 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:59,004 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:59,142 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:59,347 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:25:59,594 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:25:59,716 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:00,155 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:26:00,156 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:26:00,156 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:26:00,839 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:26:01,251 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:26:01,523 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:01,680 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:01,853 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:01,958 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:02,110 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:02,280 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:02,384 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:02,536 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:02,705 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:02,809 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:02,962 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:03,134 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:03,242 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:03,692 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:26:03,693 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:26:03,693 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:26:04,549 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:26:04,815 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:26:04,969 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:26:05,140 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:05,244 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:05,399 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:05,568 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:05,674 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:05,827 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:05,996 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:06,101 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:06,254 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:06,533 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:07,014 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:26:07,015 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:26:07,015 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:26:07,847 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:26:08,264 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:26:08,432 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:08,536 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:08,688 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:08,858 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:08,962 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:09,115 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:09,286 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:09,391 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:09,874 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:26:09,874 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:26:09,875 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:26:10,587 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:26:11,001 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:26:11,187 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:11,294 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:11,488 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:11,736 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:11,889 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:12,406 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:26:13,152 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:26:13,418 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:26:13,574 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:26:13,748 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:13,860 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:14,425 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:26:15,304 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:26:15,506 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:26:16,127 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:26:17,276 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:26:17,277 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:26:17,277 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:26:18,686 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:26:19,098 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:26:19,267 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:19,371 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:19,525 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:19,694 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:19,802 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:19,956 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:20,127 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:20,232 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:20,386 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:22,140 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:26:22,556 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:26:22,725 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:22,830 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:22,983 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:23,156 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:23,260 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:23,412 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:23,580 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:23,685 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:24,241 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:26:25,810 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:26:26,223 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:26:26,392 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:26,502 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:26,655 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:26,824 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:26,929 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:27,597 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 19:26:27,602 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:26:27,611 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:26:27,612 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:26:28,309 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-07-21 19:26:29,033 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 19:26:29,146 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 19:26:29,318 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:26:29,529 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:26:29,640 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:26:29,797 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:26:29,975 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:30,084 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:30,820 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-07-21 19:26:30,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236860336] [2020-07-21 19:26:30,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 19:26:30,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-07-21 19:26:30,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26354996] [2020-07-21 19:26:30,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-21 19:26:30,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:26:30,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-21 19:26:30,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=3225, Unknown=0, NotChecked=0, Total=3422 [2020-07-21 19:26:30,827 INFO L87 Difference]: Start difference. First operand 68 states and 97 transitions. Second operand 27 states. [2020-07-21 19:26:44,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:26:44,027 INFO L93 Difference]: Finished difference Result 81 states and 118 transitions. [2020-07-21 19:26:44,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-21 19:26:44,044 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 121 [2020-07-21 19:26:44,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:26:44,045 INFO L225 Difference]: With dead ends: 81 [2020-07-21 19:26:44,045 INFO L226 Difference]: Without dead ends: 77 [2020-07-21 19:26:44,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 144 SyntacticMatches, 5 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=583, Invalid=5737, Unknown=0, NotChecked=0, Total=6320 [2020-07-21 19:26:44,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-07-21 19:26:44,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2020-07-21 19:26:44,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-07-21 19:26:44,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 111 transitions. [2020-07-21 19:26:44,057 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 111 transitions. Word has length 121 [2020-07-21 19:26:44,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:26:44,057 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 111 transitions. [2020-07-21 19:26:44,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-21 19:26:44,057 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 111 transitions. [2020-07-21 19:26:44,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-07-21 19:26:44,059 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:26:44,059 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:26:44,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:26:44,265 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:26:44,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:26:44,266 INFO L82 PathProgramCache]: Analyzing trace with hash 183807880, now seen corresponding path program 16 times [2020-07-21 19:26:44,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:26:44,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985298238] [2020-07-21 19:26:44,267 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:26:44,407 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:26:44,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:26:44,411 WARN L261 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 141 conjunts are in the unsatisfiable core [2020-07-21 19:26:44,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:26:50,118 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 52 proven. 194 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2020-07-21 19:26:50,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:26:51,157 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:26:51,571 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:26:51,741 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:51,850 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:52,005 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:52,174 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:52,280 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:52,434 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:52,604 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:52,710 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:52,864 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:53,039 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:53,146 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:53,305 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:53,481 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:53,586 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:53,740 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:53,918 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:54,024 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:54,178 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:54,347 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:54,453 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:54,608 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:55,357 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:26:55,865 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2020-07-21 19:26:56,678 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:26:56,945 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:26:57,098 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:26:57,271 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:57,381 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:57,545 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:57,716 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:57,822 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:57,978 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:58,151 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:58,256 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:58,416 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:58,586 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:58,692 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:58,848 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:59,020 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:59,126 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:59,279 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:59,448 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:59,555 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:26:59,750 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:26:59,973 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:00,120 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:00,702 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 19:27:00,707 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:27:00,708 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:27:02,015 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:27:02,435 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:27:02,635 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:02,787 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:02,978 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:27:03,223 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:03,365 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:03,520 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:27:03,691 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:03,798 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:03,956 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:27:04,127 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:04,234 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:04,390 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:27:04,561 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:04,666 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:04,822 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:27:04,997 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:05,102 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:05,625 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 19:27:05,630 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:27:05,631 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:27:05,631 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:27:06,962 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:27:07,383 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:27:07,558 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:07,664 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:07,819 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:27:07,989 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:08,094 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:08,248 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:27:08,422 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:08,528 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:08,682 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:27:08,858 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:08,963 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:09,118 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:27:09,293 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:09,398 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:09,944 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 19:27:09,949 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:27:09,949 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:27:09,950 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:27:11,331 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:27:11,747 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:27:11,919 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:12,025 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:12,181 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:27:12,356 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:12,462 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:12,618 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:27:12,789 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:12,895 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:13,050 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:27:13,223 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:13,329 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:13,897 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 19:27:13,902 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:27:13,903 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:27:13,903 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:27:15,327 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:27:15,601 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:27:15,757 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:27:15,932 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:16,038 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:16,193 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:27:16,367 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:16,474 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:16,630 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:27:16,803 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:16,909 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:17,709 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 19:27:17,714 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:27:17,715 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:27:19,235 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:27:19,653 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:27:19,823 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:19,937 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:20,126 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:27:20,376 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:20,528 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:21,149 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 19:27:21,154 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:27:21,154 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:27:21,155 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:27:22,671 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:27:23,099 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:27:23,273 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:23,389 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:27:24,027 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 19:27:24,032 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:27:24,033 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:27:25,589 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:27:26,507 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 19:27:26,512 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:27:26,513 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:27:28,603 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 19:27:28,607 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:27:28,608 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:27:28,609 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:27:28,609 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 19:27:30,332 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:27:30,539 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 19:27:30,661 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 19:27:31,447 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:27:32,243 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 19:27:33,323 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 19:27:33,328 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:27:33,328 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:27:33,329 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:27:33,329 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:27:33,329 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:27:33,330 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:27:33,330 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:27:33,331 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:27:33,331 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:27:33,331 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:27:34,315 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 7 proven. 347 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-07-21 19:27:34,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985298238] [2020-07-21 19:27:34,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 19:27:34,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 40] total 68 [2020-07-21 19:27:34,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220082701] [2020-07-21 19:27:34,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-07-21 19:27:34,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:27:34,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-07-21 19:27:34,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=4348, Unknown=0, NotChecked=0, Total=4556 [2020-07-21 19:27:34,317 INFO L87 Difference]: Start difference. First operand 73 states and 111 transitions. Second operand 68 states. [2020-07-21 19:27:40,702 WARN L193 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-07-21 19:27:42,889 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 19:27:55,361 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-07-21 19:27:56,882 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 14 [2020-07-21 19:27:57,796 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 15 [2020-07-21 19:27:58,934 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 16 [2020-07-21 19:28:00,011 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 15 [2020-07-21 19:28:01,265 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 16 [2020-07-21 19:28:02,369 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 15 [2020-07-21 19:28:03,343 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 16 [2020-07-21 19:28:04,260 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 15 [2020-07-21 19:28:05,239 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 16 [2020-07-21 19:28:06,175 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 15 [2020-07-21 19:28:07,132 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 16 [2020-07-21 19:28:08,055 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 15 [2020-07-21 19:28:09,043 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 16 [2020-07-21 19:28:10,002 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 15 [2020-07-21 19:28:11,175 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 15 [2020-07-21 19:28:12,116 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 14 [2020-07-21 19:28:14,408 WARN L193 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-07-21 19:28:16,688 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 19:28:18,407 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 19:28:19,383 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 19:28:21,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:28:21,534 INFO L93 Difference]: Finished difference Result 126 states and 172 transitions. [2020-07-21 19:28:21,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-07-21 19:28:21,549 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 93 [2020-07-21 19:28:21,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:28:21,550 INFO L225 Difference]: With dead ends: 126 [2020-07-21 19:28:21,550 INFO L226 Difference]: Without dead ends: 117 [2020-07-21 19:28:21,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 115 SyntacticMatches, 4 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2073 ImplicationChecksByTransitivity, 51.1s TimeCoverageRelationStatistics Valid=1117, Invalid=11315, Unknown=0, NotChecked=0, Total=12432 [2020-07-21 19:28:21,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-07-21 19:28:21,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 101. [2020-07-21 19:28:21,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-07-21 19:28:21,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 143 transitions. [2020-07-21 19:28:21,563 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 143 transitions. Word has length 93 [2020-07-21 19:28:21,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:28:21,563 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 143 transitions. [2020-07-21 19:28:21,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-07-21 19:28:21,563 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 143 transitions. [2020-07-21 19:28:21,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-07-21 19:28:21,564 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:28:21,565 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:28:21,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:28:21,770 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:28:21,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:28:21,770 INFO L82 PathProgramCache]: Analyzing trace with hash -192564829, now seen corresponding path program 17 times [2020-07-21 19:28:21,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:28:21,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408217884] [2020-07-21 19:28:21,771 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:28:21,924 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:28:21,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:28:21,928 WARN L261 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 157 conjunts are in the unsatisfiable core [2020-07-21 19:28:21,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:28:25,374 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 8 proven. 233 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2020-07-21 19:28:25,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:28:26,268 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:28:26,440 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:28:26,546 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:28:26,706 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:28:26,882 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:26,992 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:27,152 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:28:27,329 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:27,438 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:27,598 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:28:28,248 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:28:28,914 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:28:29,096 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:28:29,243 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:28:29,467 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:28:29,699 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:29,813 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:29,978 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:28:30,166 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:30,282 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:30,661 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:28:30,662 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:28:30,663 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:28:31,319 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:28:31,742 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:28:31,933 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:32,055 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:32,627 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:28:32,627 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:28:32,628 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:28:33,391 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:28:33,563 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:28:33,671 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:28:34,116 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:28:35,137 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:28:36,394 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:28:36,567 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:28:36,674 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:28:36,837 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:28:37,018 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:37,130 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:37,294 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:28:37,476 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:37,589 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:37,752 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:28:37,938 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:38,049 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:38,214 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:28:38,396 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:38,509 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:38,673 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:28:38,855 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:38,967 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:39,132 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:28:39,307 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 19:28:39,412 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 19:28:40,723 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:28:40,893 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:28:41,001 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:28:41,164 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:28:41,345 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:41,468 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:41,633 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:28:41,815 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:41,928 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:42,092 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:28:42,272 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:42,383 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:42,546 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:28:42,726 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:42,837 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:43,005 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:28:43,185 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:43,298 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:43,756 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:28:46,343 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:47,925 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:28:48,096 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:28:48,202 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:28:48,363 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:28:48,542 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:48,653 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:48,817 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:28:48,994 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:49,104 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:49,267 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:28:49,451 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:49,563 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:49,723 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:28:49,902 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:50,014 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:50,825 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-07-21 19:28:50,831 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:28:50,831 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:28:50,832 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:28:52,116 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:28:52,536 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:28:52,709 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:52,814 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:52,973 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:28:53,154 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:53,269 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:53,493 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:28:53,742 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:53,871 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:28:54,483 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-07-21 19:28:54,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408217884] [2020-07-21 19:28:54,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 19:28:54,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-07-21 19:28:54,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652580350] [2020-07-21 19:28:54,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-21 19:28:54,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:28:54,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-21 19:28:54,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1840, Unknown=1, NotChecked=0, Total=1980 [2020-07-21 19:28:54,489 INFO L87 Difference]: Start difference. First operand 101 states and 143 transitions. Second operand 23 states. [2020-07-21 19:29:06,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:29:06,225 INFO L93 Difference]: Finished difference Result 109 states and 149 transitions. [2020-07-21 19:29:06,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-21 19:29:06,242 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 100 [2020-07-21 19:29:06,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:29:06,244 INFO L225 Difference]: With dead ends: 109 [2020-07-21 19:29:06,244 INFO L226 Difference]: Without dead ends: 105 [2020-07-21 19:29:06,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=368, Invalid=3412, Unknown=2, NotChecked=0, Total=3782 [2020-07-21 19:29:06,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-21 19:29:06,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2020-07-21 19:29:06,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-07-21 19:29:06,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 142 transitions. [2020-07-21 19:29:06,255 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 142 transitions. Word has length 100 [2020-07-21 19:29:06,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:29:06,255 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 142 transitions. [2020-07-21 19:29:06,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-21 19:29:06,255 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 142 transitions. [2020-07-21 19:29:06,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-07-21 19:29:06,256 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:29:06,256 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 13, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:29:06,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:29:06,464 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:29:06,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:29:06,465 INFO L82 PathProgramCache]: Analyzing trace with hash -547887379, now seen corresponding path program 18 times [2020-07-21 19:29:06,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:29:06,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842206103] [2020-07-21 19:29:06,466 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:29:06,634 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:29:06,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:29:06,638 WARN L261 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 181 conjunts are in the unsatisfiable core [2020-07-21 19:29:06,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:29:10,346 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 12 proven. 308 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2020-07-21 19:29:10,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:29:11,276 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:29:11,453 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:29:11,561 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:29:11,730 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:29:11,912 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:12,024 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:12,189 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:12,376 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:12,530 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:12,739 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:12,970 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:13,098 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:13,270 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:13,461 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:13,577 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:13,747 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:14,381 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:29:15,054 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:29:15,224 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:29:15,328 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:29:15,490 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:29:15,677 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:15,828 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:16,051 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:16,274 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:16,401 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:16,568 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:16,754 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:16,867 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:17,039 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:17,224 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:17,340 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:17,752 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:29:17,753 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:29:17,753 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:29:18,583 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:29:18,762 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:29:18,871 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:29:19,035 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:29:19,217 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:19,332 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:19,501 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:19,687 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:19,802 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:19,971 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:20,157 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:20,273 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:20,701 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:29:20,702 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:29:20,702 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:29:21,415 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:29:21,590 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:29:21,698 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:29:21,863 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:29:22,045 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:22,165 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:22,329 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:22,510 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:22,623 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:23,064 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:29:23,788 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:29:23,971 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:29:24,083 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:29:24,251 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:29:24,437 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:24,552 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:25,017 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:29:25,017 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:29:25,018 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:29:25,832 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:29:26,011 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:29:26,122 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:29:26,600 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:29:27,675 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:29:27,675 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:29:27,676 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:29:29,051 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:29:29,225 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:29:29,335 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:29:29,507 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:29:29,694 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:29,809 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:29,979 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:30,162 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:30,275 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:30,441 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:30,625 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:30,739 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:30,905 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:31,089 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:31,209 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:31,378 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:31,565 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:31,684 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:31,852 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:32,032 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 19:29:32,141 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 19:29:33,563 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:29:33,742 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:29:33,855 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:29:34,022 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:29:34,206 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:34,323 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:34,494 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:34,682 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:34,800 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:34,975 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:35,164 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:35,280 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:35,451 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:35,642 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:35,756 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:35,935 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:36,149 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:36,302 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:36,885 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:29:38,557 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:29:38,825 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:29:38,988 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:29:39,187 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:39,316 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:39,514 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:39,757 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:39,906 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:40,073 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:40,259 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:40,376 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:40,546 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:40,737 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:40,854 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:41,559 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-07-21 19:29:41,564 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:29:41,564 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:29:41,565 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 19:29:42,950 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:29:43,129 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:29:43,241 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:29:43,411 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:29:43,601 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:43,718 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:43,886 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:44,073 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:44,191 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:44,359 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:29:44,546 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:44,661 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:29:45,327 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-07-21 19:29:45,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842206103] [2020-07-21 19:29:45,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 19:29:45,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-07-21 19:29:45,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495038658] [2020-07-21 19:29:45,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-21 19:29:45,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:29:45,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-21 19:29:45,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2192, Unknown=0, NotChecked=0, Total=2352 [2020-07-21 19:29:45,334 INFO L87 Difference]: Start difference. First operand 101 states and 142 transitions. Second operand 23 states. [2020-07-21 19:29:55,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:29:55,686 INFO L93 Difference]: Finished difference Result 109 states and 148 transitions. [2020-07-21 19:29:55,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-21 19:29:55,686 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 114 [2020-07-21 19:29:55,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:29:55,689 INFO L225 Difference]: With dead ends: 109 [2020-07-21 19:29:55,689 INFO L226 Difference]: Without dead ends: 105 [2020-07-21 19:29:55,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=422, Invalid=3868, Unknown=0, NotChecked=0, Total=4290 [2020-07-21 19:29:55,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-21 19:29:55,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2020-07-21 19:29:55,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-07-21 19:29:55,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 138 transitions. [2020-07-21 19:29:55,706 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 138 transitions. Word has length 114 [2020-07-21 19:29:55,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:29:55,706 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 138 transitions. [2020-07-21 19:29:55,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-21 19:29:55,706 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 138 transitions. [2020-07-21 19:29:55,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-07-21 19:29:55,708 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:29:55,708 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 15, 15, 15, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:29:55,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:29:55,923 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:29:55,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:29:55,923 INFO L82 PathProgramCache]: Analyzing trace with hash -970320905, now seen corresponding path program 19 times [2020-07-21 19:29:55,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:29:55,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421846401] [2020-07-21 19:29:55,924 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:29:56,107 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:29:56,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:29:56,111 WARN L261 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 205 conjunts are in the unsatisfiable core [2020-07-21 19:29:56,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:30:01,689 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 20 proven. 400 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2020-07-21 19:30:01,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 19:30:02,643 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 19:30:02,755 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 19:30:02,920 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:30:03,104 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:03,218 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:03,391 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:30:03,582 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:03,699 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:03,871 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:04,062 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:04,182 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:04,357 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:04,556 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:04,678 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:04,855 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:05,046 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:05,164 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:05,345 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:05,539 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:05,656 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:05,854 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:06,050 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:06,171 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:06,352 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:06,553 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:06,679 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:06,860 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:07,063 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:07,187 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:07,366 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:07,570 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 19:30:07,684 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 19:30:08,206 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:09,005 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:30:09,194 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:09,312 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:09,491 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:30:09,705 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:09,829 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:10,011 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:10,217 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:10,343 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:10,527 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:10,732 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:10,859 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:11,045 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:11,245 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:11,373 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:11,555 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:11,759 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:11,882 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:12,071 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:12,273 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:12,399 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:12,578 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:12,763 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:12,874 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:13,037 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:13,246 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:13,380 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:13,963 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:14,737 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 19:30:14,898 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:30:15,109 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:15,242 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:15,444 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:30:15,672 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:15,812 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:16,021 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:16,255 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:16,392 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:16,590 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:16,817 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:16,957 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:17,160 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:17,389 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:17,528 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:17,734 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:17,955 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:18,097 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:18,305 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:18,530 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:18,666 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:18,871 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:19,100 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:19,238 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:19,846 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:19,847 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:19,847 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:20,850 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 19:30:21,008 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:30:21,231 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:21,365 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:21,582 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:30:21,797 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:21,932 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:22,143 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:22,378 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:22,520 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:22,707 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:22,908 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:23,050 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:23,245 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:23,456 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:23,590 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:23,787 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:23,981 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:24,103 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:24,299 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:24,512 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:24,649 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:25,250 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:25,250 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:25,251 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:26,036 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 19:30:26,215 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:30:26,447 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:26,584 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:26,778 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:30:26,986 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:27,113 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:27,311 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:27,524 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:27,637 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:27,780 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:27,962 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:28,069 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:28,229 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:28,406 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:28,513 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:28,668 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:28,839 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:28,948 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:29,481 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:29,481 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:29,482 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:30,510 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 19:30:30,663 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:30:30,861 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:30,984 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:31,180 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:30:31,372 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:31,484 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:31,671 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:31,884 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:32,012 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:32,197 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:32,398 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:32,529 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:32,733 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:32,946 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:33,078 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:33,689 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:33,689 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:33,690 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:34,732 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:30:34,926 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:35,048 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:35,230 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:30:35,446 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:35,574 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:35,764 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:35,975 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:36,115 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:36,319 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:36,529 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:36,663 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:37,274 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:37,274 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:37,275 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:38,205 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:30:38,411 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:38,544 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:38,727 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:30:38,934 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:39,060 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:39,247 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:39,448 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:39,572 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:40,214 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:41,106 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:30:41,297 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:41,427 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:41,603 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:30:41,816 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:41,958 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:42,664 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:43,715 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:30:43,939 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:44,067 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:44,764 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:44,765 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:44,765 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:46,209 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:48,013 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:30:48,209 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:48,335 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:48,530 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:30:48,739 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:48,869 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:49,060 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:49,270 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:49,399 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:49,601 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:49,816 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:49,950 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:50,148 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:50,367 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 19:30:50,497 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 19:30:52,265 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 19:30:52,385 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 19:30:52,558 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:30:52,767 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:52,892 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:53,077 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:30:53,280 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:53,408 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:53,588 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:54,009 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:54,180 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:54,288 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:54,894 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:55,787 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 19:30:56,646 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:56,886 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 19:30:56,992 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 19:30:57,161 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:30:57,379 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:57,499 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:30:57,677 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:30:57,881 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:58,015 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:58,212 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 19:30:58,431 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:58,568 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:30:59,476 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 19:30:59,482 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:30:59,483 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 19:30:59,492 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 19:31:04,308 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-07-21 19:31:09,494 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 19:31:09,714 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:31:09,840 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 19:31:10,036 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 19:31:10,252 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:31:10,384 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 19:31:11,345 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-07-21 19:31:11,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421846401] [2020-07-21 19:31:11,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 19:31:11,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-07-21 19:31:11,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026167060] [2020-07-21 19:31:11,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-21 19:31:11,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:31:11,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-21 19:31:11,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=3691, Unknown=4, NotChecked=0, Total=3906 [2020-07-21 19:31:11,353 INFO L87 Difference]: Start difference. First operand 99 states and 138 transitions. Second operand 29 states. [2020-07-21 19:31:31,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:31:31,338 INFO L93 Difference]: Finished difference Result 112 states and 158 transitions. [2020-07-21 19:31:31,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-21 19:31:31,355 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 128 [2020-07-21 19:31:31,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:31:31,357 INFO L225 Difference]: With dead ends: 112 [2020-07-21 19:31:31,357 INFO L226 Difference]: Without dead ends: 108 [2020-07-21 19:31:31,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 154 SyntacticMatches, 5 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 43.3s TimeCoverageRelationStatistics Valid=657, Invalid=6649, Unknown=4, NotChecked=0, Total=7310 [2020-07-21 19:31:31,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-07-21 19:31:31,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2020-07-21 19:31:31,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-07-21 19:31:31,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 151 transitions. [2020-07-21 19:31:31,367 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 151 transitions. Word has length 128 [2020-07-21 19:31:31,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:31:31,368 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 151 transitions. [2020-07-21 19:31:31,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-21 19:31:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 151 transitions. [2020-07-21 19:31:31,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-07-21 19:31:31,369 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:31:31,369 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:31:31,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:31:31,585 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:31:31,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:31:31,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1081659784, now seen corresponding path program 20 times [2020-07-21 19:31:31,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:31:31,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139405669] [2020-07-21 19:31:31,587 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:31:31,794 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:31:31,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:31:31,799 WARN L261 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 217 conjunts are in the unsatisfiable core [2020-07-21 19:31:31,810 INFO L286 TraceCheckSpWp]: Computing forward predicates...