/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 NUM_FUNCTIONS --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/loop-new/half.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 14:17:08,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 14:17:08,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 14:17:08,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 14:17:08,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 14:17:08,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 14:17:08,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 14:17:08,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 14:17:08,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 14:17:08,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 14:17:08,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 14:17:08,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 14:17:08,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 14:17:08,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 14:17:08,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 14:17:08,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 14:17:08,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 14:17:08,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 14:17:08,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 14:17:08,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 14:17:08,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 14:17:08,342 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 14:17:08,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 14:17:08,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 14:17:08,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 14:17:08,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 14:17:08,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 14:17:08,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 14:17:08,364 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 14:17:08,382 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 14:17:08,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 14:17:08,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 14:17:08,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 14:17:08,385 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 14:17:08,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 14:17:08,386 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 14:17:08,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 14:17:08,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 14:17:08,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 14:17:08,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 14:17:08,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 14:17:08,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 14:17:08,387 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 14:17:08,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 14:17:08,387 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 14:17:08,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 14:17:08,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 14:17:08,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 14:17:08,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 14:17:08,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 14:17:08,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 14:17:08,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 14:17:08,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 14:17:08,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 14:17:08,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 14:17:08,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:17:08,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 14:17:08,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 14:17:08,390 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 -> NUM_FUNCTIONS 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 14:17:08,763 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 14:17:08,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 14:17:08,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 14:17:08,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 14:17:08,791 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 14:17:08,792 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/half.i [2020-07-21 14:17:08,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3abac0225/74447f59ace64ce9a3d910065b91e32b/FLAGcfc84577a [2020-07-21 14:17:09,614 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 14:17:09,615 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/half.i [2020-07-21 14:17:09,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3abac0225/74447f59ace64ce9a3d910065b91e32b/FLAGcfc84577a [2020-07-21 14:17:09,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3abac0225/74447f59ace64ce9a3d910065b91e32b [2020-07-21 14:17:09,934 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 14:17:09,939 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 14:17:09,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 14:17:09,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 14:17:09,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 14:17:09,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:17:09" (1/1) ... [2020-07-21 14:17:09,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77350e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:17:09, skipping insertion in model container [2020-07-21 14:17:09,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:17:09" (1/1) ... [2020-07-21 14:17:09,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 14:17:10,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 14:17:10,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:17:10,355 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 14:17:10,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:17:10,397 INFO L208 MainTranslator]: Completed translation [2020-07-21 14:17:10,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:17:10 WrapperNode [2020-07-21 14:17:10,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 14:17:10,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 14:17:10,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 14:17:10,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 14:17:10,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:17:10" (1/1) ... [2020-07-21 14:17:10,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:17:10" (1/1) ... [2020-07-21 14:17:10,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:17:10" (1/1) ... [2020-07-21 14:17:10,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:17:10" (1/1) ... [2020-07-21 14:17:10,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:17:10" (1/1) ... [2020-07-21 14:17:10,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:17:10" (1/1) ... [2020-07-21 14:17:10,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:17:10" (1/1) ... [2020-07-21 14:17:10,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 14:17:10,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 14:17:10,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 14:17:10,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 14:17:10,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:17:10" (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 14:17:10,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 14:17:10,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 14:17:10,656 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 14:17:10,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 14:17:10,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 14:17:10,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 14:17:10,656 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 14:17:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 14:17:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 14:17:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 14:17:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 14:17:10,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 14:17:10,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 14:17:10,923 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 14:17:10,924 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 14:17:10,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:17:10 BoogieIcfgContainer [2020-07-21 14:17:10,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 14:17:10,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 14:17:10,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 14:17:10,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 14:17:10,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:17:09" (1/3) ... [2020-07-21 14:17:10,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d72d496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:17:10, skipping insertion in model container [2020-07-21 14:17:10,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:17:10" (2/3) ... [2020-07-21 14:17:10,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d72d496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:17:10, skipping insertion in model container [2020-07-21 14:17:10,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:17:10" (3/3) ... [2020-07-21 14:17:10,942 INFO L109 eAbstractionObserver]: Analyzing ICFG half.i [2020-07-21 14:17:10,958 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 14:17:10,967 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 14:17:10,985 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 14:17:11,019 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 14:17:11,020 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 14:17:11,020 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 14:17:11,020 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 14:17:11,020 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 14:17:11,020 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 14:17:11,020 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 14:17:11,021 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 14:17:11,046 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-21 14:17:11,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-21 14:17:11,056 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:17:11,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:17:11,058 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:17:11,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:17:11,067 INFO L82 PathProgramCache]: Analyzing trace with hash -961315073, now seen corresponding path program 1 times [2020-07-21 14:17:11,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:17:11,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671378100] [2020-07-21 14:17:11,078 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 14:17:11,182 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:17:11,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:17:11,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 14:17:11,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:17:11,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:17:11,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:17:11,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671378100] [2020-07-21 14:17:11,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:17:11,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 14:17:11,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102192049] [2020-07-21 14:17:11,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 14:17:11,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:17:11,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 14:17:11,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 14:17:11,320 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-07-21 14:17:11,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:17:11,375 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-07-21 14:17:11,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 14:17:11,377 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-07-21 14:17:11,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:17:11,389 INFO L225 Difference]: With dead ends: 33 [2020-07-21 14:17:11,389 INFO L226 Difference]: Without dead ends: 14 [2020-07-21 14:17:11,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 14:17:11,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-21 14:17:11,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-21 14:17:11,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-21 14:17:11,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-07-21 14:17:11,450 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2020-07-21 14:17:11,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:17:11,451 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-07-21 14:17:11,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 14:17:11,452 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-07-21 14:17:11,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-21 14:17:11,452 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:17:11,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:17:11,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:17:11,668 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:17:11,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:17:11,670 INFO L82 PathProgramCache]: Analyzing trace with hash -971473804, now seen corresponding path program 1 times [2020-07-21 14:17:11,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:17:11,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046387552] [2020-07-21 14:17:11,672 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 14:17:11,721 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:17:11,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:17:11,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 14:17:11,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:17:11,821 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 14:17:11,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:17:11,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:17:11,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046387552] [2020-07-21 14:17:11,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:17:11,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 14:17:11,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594585032] [2020-07-21 14:17:11,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 14:17:11,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:17:11,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 14:17:11,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 14:17:11,885 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 7 states. [2020-07-21 14:17:12,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:17:12,054 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2020-07-21 14:17:12,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 14:17:12,055 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-07-21 14:17:12,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:17:12,060 INFO L225 Difference]: With dead ends: 26 [2020-07-21 14:17:12,061 INFO L226 Difference]: Without dead ends: 21 [2020-07-21 14:17:12,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-07-21 14:17:12,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-21 14:17:12,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2020-07-21 14:17:12,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-21 14:17:12,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-21 14:17:12,074 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2020-07-21 14:17:12,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:17:12,074 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-21 14:17:12,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 14:17:12,075 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-21 14:17:12,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 14:17:12,076 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:17:12,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:17:12,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:17:12,290 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:17:12,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:17:12,291 INFO L82 PathProgramCache]: Analyzing trace with hash -18708286, now seen corresponding path program 1 times [2020-07-21 14:17:12,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:17:12,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869705304] [2020-07-21 14:17:12,292 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 14:17:12,327 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:17:12,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:17:12,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 14:17:12,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:17:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:17:12,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:17:12,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:17:12,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869705304] [2020-07-21 14:17:12,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:17:12,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2020-07-21 14:17:12,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195934264] [2020-07-21 14:17:12,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 14:17:12,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:17:12,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 14:17:12,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-07-21 14:17:12,504 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 10 states. [2020-07-21 14:17:12,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:17:12,710 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2020-07-21 14:17:12,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 14:17:12,712 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-07-21 14:17:12,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:17:12,713 INFO L225 Difference]: With dead ends: 31 [2020-07-21 14:17:12,713 INFO L226 Difference]: Without dead ends: 23 [2020-07-21 14:17:12,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-07-21 14:17:12,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-21 14:17:12,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2020-07-21 14:17:12,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-21 14:17:12,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-07-21 14:17:12,729 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2020-07-21 14:17:12,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:17:12,730 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-07-21 14:17:12,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 14:17:12,731 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-21 14:17:12,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 14:17:12,733 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:17:12,733 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:17:12,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:17:12,945 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:17:12,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:17:12,946 INFO L82 PathProgramCache]: Analyzing trace with hash 154986550, now seen corresponding path program 1 times [2020-07-21 14:17:12,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:17:12,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719501266] [2020-07-21 14:17:12,947 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 14:17:12,984 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:17:12,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:17:12,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 14:17:12,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:17:13,143 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 14:17:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:17:13,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:17:13,257 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:17:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:17:13,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719501266] [2020-07-21 14:17:13,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:17:13,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2020-07-21 14:17:13,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134248339] [2020-07-21 14:17:13,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-21 14:17:13,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:17:13,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-21 14:17:13,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-07-21 14:17:13,593 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 17 states. [2020-07-21 14:17:14,084 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2020-07-21 14:17:14,253 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 22 [2020-07-21 14:17:14,667 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 27 [2020-07-21 14:17:14,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:17:14,927 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-07-21 14:17:14,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-21 14:17:14,928 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2020-07-21 14:17:14,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:17:14,930 INFO L225 Difference]: With dead ends: 46 [2020-07-21 14:17:14,930 INFO L226 Difference]: Without dead ends: 32 [2020-07-21 14:17:14,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2020-07-21 14:17:14,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-21 14:17:14,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2020-07-21 14:17:14,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-21 14:17:14,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-07-21 14:17:14,942 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2020-07-21 14:17:14,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:17:14,943 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-07-21 14:17:14,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-21 14:17:14,943 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-07-21 14:17:14,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 14:17:14,944 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:17:14,945 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:17:15,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:17:15,152 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:17:15,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:17:15,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1027624830, now seen corresponding path program 2 times [2020-07-21 14:17:15,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:17:15,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285957399] [2020-07-21 14:17:15,154 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 14:17:15,204 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:17:15,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:17:15,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-21 14:17:15,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:17:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:17:15,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:17:15,536 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-21 14:17:15,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285957399] [2020-07-21 14:17:15,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:17:15,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6] total 17 [2020-07-21 14:17:15,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915598073] [2020-07-21 14:17:15,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-21 14:17:15,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:17:15,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-21 14:17:15,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-07-21 14:17:15,543 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 17 states. [2020-07-21 14:17:15,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:17:15,995 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-07-21 14:17:15,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-21 14:17:16,000 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 26 [2020-07-21 14:17:16,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:17:16,001 INFO L225 Difference]: With dead ends: 48 [2020-07-21 14:17:16,002 INFO L226 Difference]: Without dead ends: 35 [2020-07-21 14:17:16,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2020-07-21 14:17:16,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-21 14:17:16,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2020-07-21 14:17:16,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-21 14:17:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-07-21 14:17:16,023 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 26 [2020-07-21 14:17:16,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:17:16,026 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-07-21 14:17:16,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-21 14:17:16,027 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-07-21 14:17:16,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-21 14:17:16,029 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:17:16,029 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:17:16,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:17:16,241 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:17:16,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:17:16,242 INFO L82 PathProgramCache]: Analyzing trace with hash -490417350, now seen corresponding path program 3 times [2020-07-21 14:17:16,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:17:16,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626025548] [2020-07-21 14:17:16,244 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 14:17:16,277 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:17:16,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:17:16,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-21 14:17:16,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:17:16,492 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 14:17:16,542 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:17:16,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:17:16,591 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:17:17,405 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:17:17,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626025548] [2020-07-21 14:17:17,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:17:17,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2020-07-21 14:17:17,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531977570] [2020-07-21 14:17:17,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-21 14:17:17,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:17:17,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-21 14:17:17,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2020-07-21 14:17:17,410 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2020-07-21 14:17:18,276 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2020-07-21 14:17:18,480 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-07-21 14:17:18,794 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2020-07-21 14:17:19,322 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-07-21 14:17:19,546 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:17:19,728 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-07-21 14:17:19,891 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-21 14:17:20,077 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-07-21 14:17:20,282 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-07-21 14:17:20,504 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2020-07-21 14:17:20,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:17:20,888 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2020-07-21 14:17:20,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-07-21 14:17:20,889 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2020-07-21 14:17:20,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:17:20,890 INFO L225 Difference]: With dead ends: 62 [2020-07-21 14:17:20,891 INFO L226 Difference]: Without dead ends: 54 [2020-07-21 14:17:20,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=578, Invalid=2392, Unknown=0, NotChecked=0, Total=2970 [2020-07-21 14:17:20,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-07-21 14:17:20,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-07-21 14:17:20,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-21 14:17:20,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2020-07-21 14:17:20,906 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 29 [2020-07-21 14:17:20,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:17:20,906 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2020-07-21 14:17:20,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-21 14:17:20,906 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2020-07-21 14:17:20,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-21 14:17:20,908 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:17:20,909 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:17:21,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:17:21,114 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:17:21,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:17:21,115 INFO L82 PathProgramCache]: Analyzing trace with hash -2033682622, now seen corresponding path program 4 times [2020-07-21 14:17:21,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:17:21,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073975762] [2020-07-21 14:17:21,117 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 14:17:21,166 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:17:21,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:17:21,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 50 conjunts are in the unsatisfiable core [2020-07-21 14:17:21,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:17:21,776 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 14:17:21,859 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:17:21,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:17:21,933 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:17:25,074 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:17:25,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073975762] [2020-07-21 14:17:25,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:17:25,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 53 [2020-07-21 14:17:25,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021780946] [2020-07-21 14:17:25,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-07-21 14:17:25,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:17:25,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-07-21 14:17:25,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=545, Invalid=2211, Unknown=0, NotChecked=0, Total=2756 [2020-07-21 14:17:25,079 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2020-07-21 14:17:26,677 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-07-21 14:17:27,085 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-07-21 14:17:27,606 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2020-07-21 14:17:28,147 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:17:28,400 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:17:28,623 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:17:28,851 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:17:29,076 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:17:29,344 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:17:29,571 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-07-21 14:17:29,814 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:17:30,041 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:17:30,365 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-21 14:17:30,635 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-21 14:17:30,916 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-07-21 14:17:31,133 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-07-21 14:17:31,349 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-07-21 14:17:31,539 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-07-21 14:17:31,793 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-07-21 14:17:32,041 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-07-21 14:17:32,338 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-07-21 14:17:32,543 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-07-21 14:17:32,775 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-07-21 14:17:33,037 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-07-21 14:17:33,300 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-21 14:17:33,573 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-21 14:17:33,894 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-07-21 14:17:34,281 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-07-21 14:17:34,608 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-07-21 14:17:34,863 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-07-21 14:17:35,093 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-07-21 14:17:35,363 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-21 14:17:35,692 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-07-21 14:17:35,996 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-07-21 14:17:36,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:17:36,609 INFO L93 Difference]: Finished difference Result 114 states and 121 transitions. [2020-07-21 14:17:36,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-07-21 14:17:36,611 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2020-07-21 14:17:36,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:17:36,614 INFO L225 Difference]: With dead ends: 114 [2020-07-21 14:17:36,614 INFO L226 Difference]: Without dead ends: 102 [2020-07-21 14:17:36,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2825 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=2424, Invalid=9786, Unknown=0, NotChecked=0, Total=12210 [2020-07-21 14:17:36,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-07-21 14:17:36,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-07-21 14:17:36,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-07-21 14:17:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2020-07-21 14:17:36,640 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 53 [2020-07-21 14:17:36,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:17:36,641 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2020-07-21 14:17:36,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-07-21 14:17:36,641 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2020-07-21 14:17:36,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-07-21 14:17:36,645 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:17:36,645 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:17:36,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:17:36,850 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:17:36,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:17:36,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1181026478, now seen corresponding path program 5 times [2020-07-21 14:17:36,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:17:36,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869039180] [2020-07-21 14:17:36,853 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 14:17:36,933 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:17:36,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:17:36,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 98 conjunts are in the unsatisfiable core [2020-07-21 14:17:36,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:17:39,532 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 14:17:39,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:17:39,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:17:39,936 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:17:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:17:52,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869039180] [2020-07-21 14:17:52,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:17:52,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 101 [2020-07-21 14:17:52,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589499733] [2020-07-21 14:17:52,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2020-07-21 14:17:52,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:17:52,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2020-07-21 14:17:52,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2149, Invalid=7951, Unknown=0, NotChecked=0, Total=10100 [2020-07-21 14:17:52,748 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2020-07-21 14:17:59,425 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 28 [2020-07-21 14:17:59,901 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-07-21 14:18:00,412 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-07-21 14:18:00,932 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-07-21 14:18:01,383 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-07-21 14:18:01,852 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2020-07-21 14:18:02,742 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2020-07-21 14:18:03,241 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:18:03,771 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:18:04,168 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:18:04,703 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:18:05,203 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:18:05,777 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:18:06,338 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-07-21 14:18:06,894 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:18:07,346 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:18:07,889 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-21 14:18:08,411 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-21 14:18:08,986 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-07-21 14:18:09,561 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-07-21 14:18:10,209 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-07-21 14:18:10,755 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-07-21 14:18:11,360 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:18:11,936 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:18:12,601 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:18:13,238 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:18:13,910 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:18:14,488 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:18:14,960 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:18:15,289 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:18:15,943 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:18:16,553 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:18:16,983 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:18:17,583 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:18:18,278 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:18:19,001 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:18:19,813 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:18:20,257 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:18:20,954 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:18:21,558 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:18:22,289 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:18:22,961 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:18:23,708 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:18:24,495 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:18:25,191 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:18:25,782 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:18:26,532 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:18:27,236 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:18:27,698 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:18:28,513 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:18:29,396 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:18:29,875 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:18:30,546 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:18:31,342 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:18:32,283 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:18:33,276 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:18:33,959 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:18:34,539 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:18:35,460 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:18:36,331 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:18:37,262 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:18:38,530 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:18:39,515 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:18:40,257 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:18:41,391 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:18:42,274 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:18:43,329 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-07-21 14:18:44,396 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-07-21 14:18:45,354 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-07-21 14:18:46,178 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:18:47,215 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-07-21 14:18:48,063 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-07-21 14:18:49,089 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-07-21 14:18:50,151 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-07-21 14:18:51,248 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-07-21 14:18:52,217 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-07-21 14:18:53,418 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-21 14:18:54,418 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-21 14:18:55,466 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-07-21 14:18:56,945 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-07-21 14:18:58,175 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-07-21 14:18:59,196 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-07-21 14:19:00,340 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-07-21 14:19:01,427 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-21 14:19:02,706 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-07-21 14:19:03,847 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-07-21 14:19:04,407 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-07-21 14:19:04,820 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-07-21 14:19:05,543 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-07-21 14:19:06,317 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 25 [2020-07-21 14:19:06,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:19:06,376 INFO L93 Difference]: Finished difference Result 218 states and 233 transitions. [2020-07-21 14:19:06,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2020-07-21 14:19:06,381 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2020-07-21 14:19:06,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:19:06,384 INFO L225 Difference]: With dead ends: 218 [2020-07-21 14:19:06,384 INFO L226 Difference]: Without dead ends: 198 [2020-07-21 14:19:06,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 99 SyntacticMatches, 3 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12145 ImplicationChecksByTransitivity, 80.2s TimeCoverageRelationStatistics Valid=10004, Invalid=39502, Unknown=0, NotChecked=0, Total=49506 [2020-07-21 14:19:06,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-07-21 14:19:06,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-07-21 14:19:06,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-07-21 14:19:06,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2020-07-21 14:19:06,451 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 101 [2020-07-21 14:19:06,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:19:06,452 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2020-07-21 14:19:06,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 101 states. [2020-07-21 14:19:06,452 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2020-07-21 14:19:06,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-07-21 14:19:06,457 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:19:06,457 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:19:06,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:19:06,660 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:19:06,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:19:06,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1984747378, now seen corresponding path program 6 times [2020-07-21 14:19:06,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:19:06,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219579121] [2020-07-21 14:19:06,662 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 14:19:06,786 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:19:06,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:19:06,794 WARN L261 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 194 conjunts are in the unsatisfiable core [2020-07-21 14:19:06,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:19:27,560 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 14:19:28,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 0 proven. 5735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:19:28,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:19:29,768 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 14:19:32,503 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2020-07-21 14:19:34,079 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 14:19:35,729 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 14:19:36,576 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 14:19:37,497 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 14:19:38,362 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 14:19:39,198 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:19:40,081 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:19:41,850 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:19:43,982 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:19:45,022 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:19:46,450 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:19:47,486 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:19:48,476 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:19:49,489 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:19:50,710 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:19:52,445 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:19:53,633 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:19:54,710 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:19:55,827 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:19:57,057 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:19:58,156 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:19:59,277 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:00,585 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:01,769 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:02,945 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:04,292 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:05,496 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:06,704 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:08,081 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:09,344 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:10,587 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:12,022 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:13,270 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:14,531 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:15,984 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:17,245 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:18,529 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:20,102 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:21,402 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:22,730 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:24,317 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:26,924 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:28,557 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:29,986 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:31,405 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:33,146 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:34,520 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:35,945 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:37,670 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:39,153 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:40,637 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:42,408 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:43,904 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:45,381 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:47,237 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:49,916 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:53,007 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:54,687 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:56,797 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:58,541 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:20:59,972 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:02,048 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:03,817 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:05,517 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:07,724 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:09,476 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:11,176 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:13,439 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:15,182 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:16,986 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:19,248 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:21,067 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:22,876 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:25,232 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:27,050 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:28,892 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:31,051 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:32,590 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:34,259 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:36,820 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:38,991 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:40,915 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 14:21:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5735 backedges. 0 proven. 5735 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:21:41,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219579121] [2020-07-21 14:21:41,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:21:41,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 197 [2020-07-21 14:21:41,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910421048] [2020-07-21 14:21:41,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 197 states [2020-07-21 14:21:41,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:21:41,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2020-07-21 14:21:41,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8621, Invalid=29991, Unknown=0, NotChecked=0, Total=38612 [2020-07-21 14:21:41,231 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 197 states. [2020-07-21 14:23:10,549 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 27 [2020-07-21 14:23:11,595 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 28 [2020-07-21 14:23:13,943 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-07-21 14:23:15,410 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 28 [2020-07-21 14:23:16,672 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-07-21 14:23:18,221 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2020-07-21 14:23:19,227 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2020-07-21 14:23:20,461 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2020-07-21 14:23:21,809 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2020-07-21 14:23:23,347 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2020-07-21 14:23:25,279 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:23:26,816 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:23:28,179 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:23:29,771 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:23:31,459 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:23:33,032 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:23:35,039 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-07-21 14:23:36,769 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:23:38,300 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:23:40,335 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-21 14:23:41,884 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-21 14:23:43,810 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-07-21 14:23:46,192 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-07-21 14:23:48,044 WARN L193 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-07-21 14:23:49,575 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-07-21 14:23:51,322 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:23:53,151 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:23:55,112 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:23:57,367 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:23:59,219 WARN L193 SmtUtils]: Spent 829.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:24:00,808 WARN L193 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:24:02,708 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:24:04,395 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:24:06,274 WARN L193 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:24:08,638 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:24:10,929 WARN L193 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:24:12,791 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:24:15,079 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:24:16,983 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:24:19,084 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:24:22,091 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:24:24,400 WARN L193 SmtUtils]: Spent 795.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:24:25,981 WARN L193 SmtUtils]: Spent 628.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:24:28,012 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:24:29,964 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:24:32,325 WARN L193 SmtUtils]: Spent 946.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:24:34,857 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:24:36,835 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:24:38,539 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:24:40,729 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:24:42,742 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:24:45,001 WARN L193 SmtUtils]: Spent 847.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:24:47,576 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:24:49,308 WARN L193 SmtUtils]: Spent 819.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:24:50,783 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:24:53,190 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:24:54,880 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:24:56,788 WARN L193 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:24:59,415 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:25:01,495 WARN L193 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:25:03,255 WARN L193 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:25:05,383 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:25:07,630 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:25:10,107 WARN L193 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:25:12,985 WARN L193 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:25:15,113 WARN L193 SmtUtils]: Spent 862.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:25:16,984 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:25:19,539 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:25:21,598 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:25:23,828 WARN L193 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:25:26,843 WARN L193 SmtUtils]: Spent 741.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:25:29,103 WARN L193 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:25:31,064 WARN L193 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:25:33,288 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:25:35,470 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:25:38,059 WARN L193 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:25:41,184 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:25:43,185 WARN L193 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:25:44,889 WARN L193 SmtUtils]: Spent 850.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:25:47,110 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:25:48,984 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:25:51,411 WARN L193 SmtUtils]: Spent 996.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:25:54,489 WARN L193 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:25:56,548 WARN L193 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:25:58,352 WARN L193 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:26:00,620 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:26:02,561 WARN L193 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:26:05,138 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:26:08,195 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:26:10,478 WARN L193 SmtUtils]: Spent 955.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:26:12,497 WARN L193 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:26:15,143 WARN L193 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:26:17,436 WARN L193 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:26:20,115 WARN L193 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:26:23,161 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:26:25,659 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:26:27,831 WARN L193 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:26:30,295 WARN L193 SmtUtils]: Spent 790.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:26:32,607 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:26:35,280 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:26:38,681 WARN L193 SmtUtils]: Spent 862.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:26:41,550 WARN L193 SmtUtils]: Spent 956.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:26:44,032 WARN L193 SmtUtils]: Spent 929.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:26:46,760 WARN L193 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:26:48,731 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:26:51,168 WARN L193 SmtUtils]: Spent 910.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:26:54,772 WARN L193 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:26:57,185 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:26:59,232 WARN L193 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:27:01,816 WARN L193 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:27:04,275 WARN L193 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:27:07,382 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:27:11,060 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:27:13,809 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:27:16,226 WARN L193 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:27:19,427 WARN L193 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:27:21,907 WARN L193 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:27:24,923 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:27:28,775 WARN L193 SmtUtils]: Spent 956.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:27:31,907 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:27:34,618 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:27:37,722 WARN L193 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:27:40,222 WARN L193 SmtUtils]: Spent 900.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:27:43,221 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:27:46,915 WARN L193 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:27:50,198 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:27:52,928 WARN L193 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:27:56,045 WARN L193 SmtUtils]: Spent 841.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:27:58,527 WARN L193 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:28:01,233 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:28:04,790 WARN L193 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:28:08,007 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:28:10,688 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:28:13,569 WARN L193 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:28:16,287 WARN L193 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:28:19,344 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:28:23,341 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:28:25,446 WARN L193 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:28:27,130 WARN L193 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:28:29,830 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:28:31,869 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:28:34,072 WARN L193 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:28:36,950 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:28:39,133 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:28:41,053 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:28:43,207 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:28:45,441 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:28:47,865 WARN L193 SmtUtils]: Spent 845.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:28:50,903 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:28:53,359 WARN L193 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:28:55,498 WARN L193 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:28:58,007 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:29:00,183 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:29:02,680 WARN L193 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:29:05,618 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:29:07,926 WARN L193 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:29:10,023 WARN L193 SmtUtils]: Spent 810.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:29:12,592 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:29:14,801 WARN L193 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:29:17,347 WARN L193 SmtUtils]: Spent 915.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:29:20,508 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-07-21 14:29:22,556 WARN L193 SmtUtils]: Spent 899.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-07-21 14:29:24,370 WARN L193 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:29:26,619 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:29:28,796 WARN L193 SmtUtils]: Spent 734.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 14:29:31,403 WARN L193 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-07-21 14:29:34,552 WARN L193 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-07-21 14:29:36,929 WARN L193 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-07-21 14:29:39,012 WARN L193 SmtUtils]: Spent 841.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-07-21 14:29:41,653 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-07-21 14:29:43,559 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-07-21 14:29:46,003 WARN L193 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-07-21 14:29:48,800 WARN L193 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2020-07-21 14:29:51,661 WARN L193 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-07-21 14:29:54,116 WARN L193 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-07-21 14:29:56,895 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-21 14:29:59,464 WARN L193 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-07-21 14:30:02,377 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-07-21 14:30:05,695 WARN L193 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-07-21 14:30:08,850 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-07-21 14:30:11,304 WARN L193 SmtUtils]: Spent 897.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-07-21 14:30:14,070 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-07-21 14:30:16,415 WARN L193 SmtUtils]: Spent 773.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-21 14:30:19,228 WARN L193 SmtUtils]: Spent 992.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-07-21 14:30:22,728 WARN L193 SmtUtils]: Spent 901.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-07-21 14:30:23,949 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-07-21 14:30:24,907 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-07-21 14:30:26,618 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-07-21 14:30:28,570 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 25 [2020-07-21 14:30:28,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:30:28,648 INFO L93 Difference]: Finished difference Result 426 states and 457 transitions. [2020-07-21 14:30:28,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 319 states. [2020-07-21 14:30:28,655 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 197 [2020-07-21 14:30:28,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:30:28,659 INFO L225 Difference]: With dead ends: 426 [2020-07-21 14:30:28,660 INFO L226 Difference]: Without dead ends: 390 [2020-07-21 14:30:28,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 195 SyntacticMatches, 3 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50369 ImplicationChecksByTransitivity, 593.2s TimeCoverageRelationStatistics Valid=40716, Invalid=158646, Unknown=0, NotChecked=0, Total=199362 [2020-07-21 14:30:28,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2020-07-21 14:30:28,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2020-07-21 14:30:28,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-07-21 14:30:28,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 390 transitions. [2020-07-21 14:30:28,735 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 390 transitions. Word has length 197 [2020-07-21 14:30:28,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:30:28,738 INFO L479 AbstractCegarLoop]: Abstraction has 390 states and 390 transitions. [2020-07-21 14:30:28,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 197 states. [2020-07-21 14:30:28,738 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 390 transitions. [2020-07-21 14:30:28,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-07-21 14:30:28,755 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:30:28,755 INFO L422 BasicCegarLoop]: trace histogram [126, 126, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:30:28,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:30:28,971 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:30:28,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:30:28,972 INFO L82 PathProgramCache]: Analyzing trace with hash -354150478, now seen corresponding path program 7 times [2020-07-21 14:30:28,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:30:28,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102308449] [2020-07-21 14:30:28,973 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 14:30:29,217 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:30:29,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:30:29,240 WARN L261 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 386 conjunts are in the unsatisfiable core [2020-07-21 14:30:29,250 INFO L286 TraceCheckSpWp]: Computing forward predicates...