/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_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/MultCommutative-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 15:45:16,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 15:45:16,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 15:45:16,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 15:45:16,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 15:45:16,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 15:45:16,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 15:45:16,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 15:45:16,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 15:45:16,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 15:45:16,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 15:45:16,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 15:45:16,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 15:45:16,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 15:45:16,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 15:45:16,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 15:45:16,483 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 15:45:16,484 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 15:45:16,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 15:45:16,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 15:45:16,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 15:45:16,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 15:45:16,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 15:45:16,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 15:45:16,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 15:45:16,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 15:45:16,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 15:45:16,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 15:45:16,509 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 15:45:16,535 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 15:45:16,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 15:45:16,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 15:45:16,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 15:45:16,537 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 15:45:16,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 15:45:16,538 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 15:45:16,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 15:45:16,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 15:45:16,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 15:45:16,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 15:45:16,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 15:45:16,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 15:45:16,540 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 15:45:16,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 15:45:16,540 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 15:45:16,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 15:45:16,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 15:45:16,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 15:45:16,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 15:45:16,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 15:45:16,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 15:45:16,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 15:45:16,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 15:45:16,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 15:45:16,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 15:45:16,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:45:16,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 15:45:16,543 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 15:45:16,543 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_VARIABLES 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 15:45:16,807 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 15:45:16,818 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 15:45:16,822 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 15:45:16,824 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 15:45:16,824 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 15:45:16,825 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-07-21 15:45:16,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc91219f/83baf5acab65416a9b25367d367e7f11/FLAGe5fa33083 [2020-07-21 15:45:17,323 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 15:45:17,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-07-21 15:45:17,330 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc91219f/83baf5acab65416a9b25367d367e7f11/FLAGe5fa33083 [2020-07-21 15:45:17,698 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccc91219f/83baf5acab65416a9b25367d367e7f11 [2020-07-21 15:45:17,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 15:45:17,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 15:45:17,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 15:45:17,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 15:45:17,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 15:45:17,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:45:17" (1/1) ... [2020-07-21 15:45:17,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b00a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:45:17, skipping insertion in model container [2020-07-21 15:45:17,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:45:17" (1/1) ... [2020-07-21 15:45:17,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 15:45:17,741 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 15:45:17,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:45:17,921 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 15:45:17,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 15:45:17,958 INFO L208 MainTranslator]: Completed translation [2020-07-21 15:45:17,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:45:17 WrapperNode [2020-07-21 15:45:17,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 15:45:17,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 15:45:17,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 15:45:17,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 15:45:17,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:45:17" (1/1) ... [2020-07-21 15:45:17,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:45:17" (1/1) ... [2020-07-21 15:45:17,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:45:17" (1/1) ... [2020-07-21 15:45:17,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:45:17" (1/1) ... [2020-07-21 15:45:17,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:45:17" (1/1) ... [2020-07-21 15:45:17,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:45:17" (1/1) ... [2020-07-21 15:45:17,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:45:17" (1/1) ... [2020-07-21 15:45:17,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 15:45:17,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 15:45:17,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 15:45:17,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 15:45:17,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:45:17" (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 15:45:18,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 15:45:18,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 15:45:18,175 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-07-21 15:45:18,175 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 15:45:18,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 15:45:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 15:45:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-07-21 15:45:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 15:45:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 15:45:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 15:45:18,484 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 15:45:18,484 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 15:45:18,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:45:18 BoogieIcfgContainer [2020-07-21 15:45:18,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 15:45:18,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 15:45:18,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 15:45:18,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 15:45:18,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:45:17" (1/3) ... [2020-07-21 15:45:18,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa4a665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:45:18, skipping insertion in model container [2020-07-21 15:45:18,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:45:17" (2/3) ... [2020-07-21 15:45:18,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa4a665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:45:18, skipping insertion in model container [2020-07-21 15:45:18,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:45:18" (3/3) ... [2020-07-21 15:45:18,495 INFO L109 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2020-07-21 15:45:18,505 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 15:45:18,512 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 15:45:18,525 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 15:45:18,547 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 15:45:18,547 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 15:45:18,547 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 15:45:18,547 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 15:45:18,547 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 15:45:18,547 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 15:45:18,548 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 15:45:18,548 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 15:45:18,564 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-21 15:45:18,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 15:45:18,571 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:45:18,572 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:45:18,573 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:45:18,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:45:18,578 INFO L82 PathProgramCache]: Analyzing trace with hash -962219036, now seen corresponding path program 1 times [2020-07-21 15:45:18,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:45:18,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614873584] [2020-07-21 15:45:18,588 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 15:45:18,669 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:45:18,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:45:18,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 15:45:18,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:45:18,753 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 15:45:18,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:45:18,850 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 15:45:18,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614873584] [2020-07-21 15:45:18,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 15:45:18,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 15:45:18,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737847107] [2020-07-21 15:45:18,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 15:45:18,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:45:18,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 15:45:18,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:45:18,873 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 6 states. [2020-07-21 15:45:19,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:45:19,025 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2020-07-21 15:45:19,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 15:45:19,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-07-21 15:45:19,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:45:19,039 INFO L225 Difference]: With dead ends: 41 [2020-07-21 15:45:19,040 INFO L226 Difference]: Without dead ends: 25 [2020-07-21 15:45:19,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 15:45:19,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-21 15:45:19,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-21 15:45:19,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-21 15:45:19,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2020-07-21 15:45:19,102 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 23 [2020-07-21 15:45:19,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:45:19,103 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2020-07-21 15:45:19,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 15:45:19,103 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2020-07-21 15:45:19,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 15:45:19,106 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:45:19,107 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:45:19,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:45:19,321 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:45:19,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:45:19,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1472914703, now seen corresponding path program 1 times [2020-07-21 15:45:19,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:45:19,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500910167] [2020-07-21 15:45:19,324 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 15:45:19,366 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 15:45:19,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:45:19,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 15:45:19,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:45:19,413 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-21 15:45:19,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:45:19,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500910167] [2020-07-21 15:45:19,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:45:19,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 15:45:19,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347817300] [2020-07-21 15:45:19,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 15:45:19,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:45:19,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 15:45:19,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:45:19,418 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand 5 states. [2020-07-21 15:45:19,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:45:19,486 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-07-21 15:45:19,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 15:45:19,487 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-21 15:45:19,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:45:19,489 INFO L225 Difference]: With dead ends: 29 [2020-07-21 15:45:19,489 INFO L226 Difference]: Without dead ends: 25 [2020-07-21 15:45:19,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 15:45:19,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-21 15:45:19,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-21 15:45:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-21 15:45:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2020-07-21 15:45:19,499 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 30 [2020-07-21 15:45:19,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:45:19,500 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2020-07-21 15:45:19,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 15:45:19,500 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2020-07-21 15:45:19,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-21 15:45:19,502 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:45:19,502 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:45:19,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:45:19,716 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:45:19,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:45:19,718 INFO L82 PathProgramCache]: Analyzing trace with hash 746268336, now seen corresponding path program 2 times [2020-07-21 15:45:19,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:45:19,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732260882] [2020-07-21 15:45:19,719 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 15:45:19,778 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:45:19,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:45:19,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 41 conjunts are in the unsatisfiable core [2020-07-21 15:45:19,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:45:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-07-21 15:45:19,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:45:20,191 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 15:45:20,203 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 15:45:20,340 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:45:20,342 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:45:20,345 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:45:20,346 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:45:20,347 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:45:20,349 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:45:20,350 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:45:20,351 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:45:20,683 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 15:45:20,685 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:45:20,687 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:45:20,689 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:45:20,690 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:45:20,691 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:45:20,693 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:45:20,695 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 15:45:20,697 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:45:20,698 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:45:20,699 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:45:20,701 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:45:20,703 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 15:45:20,734 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 15:45:20,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732260882] [2020-07-21 15:45:20,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 15:45:20,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 22 [2020-07-21 15:45:20,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29073083] [2020-07-21 15:45:20,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-21 15:45:20,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:45:20,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-21 15:45:20,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2020-07-21 15:45:20,737 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 22 states. [2020-07-21 15:45:21,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:45:21,141 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2020-07-21 15:45:21,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 15:45:21,142 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 37 [2020-07-21 15:45:21,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:45:21,144 INFO L225 Difference]: With dead ends: 40 [2020-07-21 15:45:21,146 INFO L226 Difference]: Without dead ends: 36 [2020-07-21 15:45:21,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2020-07-21 15:45:21,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-21 15:45:21,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-07-21 15:45:21,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-21 15:45:21,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2020-07-21 15:45:21,161 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 37 [2020-07-21 15:45:21,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:45:21,161 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2020-07-21 15:45:21,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-21 15:45:21,162 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2020-07-21 15:45:21,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-21 15:45:21,164 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:45:21,164 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:45:21,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:45:21,378 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:45:21,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:45:21,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1882602408, now seen corresponding path program 1 times [2020-07-21 15:45:21,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:45:21,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262011700] [2020-07-21 15:45:21,380 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 15:45:21,430 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:45:21,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:45:21,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 15:45:21,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:45:21,472 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-07-21 15:45:21,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:45:21,578 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:45:21,579 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:45:21,613 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-07-21 15:45:21,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262011700] [2020-07-21 15:45:21,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 15:45:21,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2020-07-21 15:45:21,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117176105] [2020-07-21 15:45:21,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 15:45:21,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:45:21,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 15:45:21,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-21 15:45:21,616 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand 8 states. [2020-07-21 15:45:21,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:45:21,696 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2020-07-21 15:45:21,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 15:45:21,697 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-07-21 15:45:21,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:45:21,699 INFO L225 Difference]: With dead ends: 39 [2020-07-21 15:45:21,699 INFO L226 Difference]: Without dead ends: 35 [2020-07-21 15:45:21,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 76 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 15:45:21,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-21 15:45:21,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-21 15:45:21,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-21 15:45:21,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2020-07-21 15:45:21,714 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 47 transitions. Word has length 43 [2020-07-21 15:45:21,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:45:21,714 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 47 transitions. [2020-07-21 15:45:21,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 15:45:21,714 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 47 transitions. [2020-07-21 15:45:21,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-21 15:45:21,718 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:45:21,719 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:45:21,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:45:21,935 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:45:21,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:45:21,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1837502139, now seen corresponding path program 3 times [2020-07-21 15:45:21,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:45:21,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585530727] [2020-07-21 15:45:21,937 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 15:45:21,980 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:45:21,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:45:21,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 57 conjunts are in the unsatisfiable core [2020-07-21 15:45:21,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:45:22,223 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 15:45:22,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:45:22,426 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:45:22,589 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:45:22,589 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:45:22,590 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:45:22,591 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 15:45:22,731 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:45:22,733 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:45:22,734 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:45:22,735 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:45:23,082 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:45:23,084 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:45:23,085 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:45:23,086 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:45:23,086 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:45:23,088 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:45:23,090 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:45:23,091 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:45:23,093 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:45:25,128 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< |c_mult_#in~m| 1))) (and (or (forall ((v_mult_~n_BEFORE_CALL_10 Int)) (< (div (+ (* v_mult_~n_BEFORE_CALL_10 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 2)) 3)) .cse0) .cse0 (forall ((v_mult_~n_BEFORE_CALL_10 Int)) (let ((.cse1 (* v_mult_~n_BEFORE_CALL_10 (- 1)))) (let ((.cse2 (div .cse1 (- 2)))) (or (<= 3 (div (+ .cse1 (- 1)) (- 2))) (< .cse2 1) (< .cse2 (+ (div (+ .cse1 (* |c_mult_#res| (- 1))) (- 2)) 1)))))) (forall ((v_mult_~n_BEFORE_CALL_10 Int)) (let ((.cse3 (* v_mult_~n_BEFORE_CALL_10 (- 1)))) (or (<= 3 (div (+ .cse3 (- 1)) (- 2))) (< (div .cse3 (- 2)) 1) (< (div (+ .cse3 (* |c_mult_#res| (- 1)) (- 1)) (- 2)) 3)))))) is different from false [2020-07-21 15:45:27,193 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< |c_mult_#in~m| 1))) (and (or (forall ((v_mult_~n_BEFORE_CALL_10 Int)) (< (div (+ (* v_mult_~n_BEFORE_CALL_10 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 2)) 3)) .cse0) (forall ((v_prenex_2 Int)) (let ((.cse1 (* v_prenex_2 (- 1)))) (or (< (div .cse1 (- 2)) 1) (< (div (+ .cse1 (* |c_mult_#res| (- 1)) (- 1)) (- 2)) 3) (<= 3 (div (+ .cse1 (- 1)) (- 2)))))) .cse0 (forall ((v_prenex_1 Int)) (let ((.cse3 (* v_prenex_1 (- 1)))) (let ((.cse2 (div .cse3 (- 2)))) (or (< .cse2 (+ (div (+ .cse3 (* |c_mult_#res| (- 1))) (- 2)) 1)) (< .cse2 1) (<= 3 (div (+ .cse3 (- 1)) (- 2))))))))) is different from false [2020-07-21 15:45:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 5 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 8 not checked. [2020-07-21 15:45:27,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585530727] [2020-07-21 15:45:27,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 15:45:27,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 35 [2020-07-21 15:45:27,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998571779] [2020-07-21 15:45:27,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-07-21 15:45:27,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:45:27,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-07-21 15:45:27,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=948, Unknown=2, NotChecked=126, Total=1190 [2020-07-21 15:45:27,284 INFO L87 Difference]: Start difference. First operand 35 states and 47 transitions. Second operand 35 states. [2020-07-21 15:46:07,956 WARN L193 SmtUtils]: Spent 40.44 s on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-07-21 15:46:14,352 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-07-21 15:46:14,753 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2020-07-21 15:46:15,343 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-07-21 15:46:15,699 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:46:19,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:46:19,779 INFO L93 Difference]: Finished difference Result 62 states and 85 transitions. [2020-07-21 15:46:19,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-21 15:46:19,779 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 44 [2020-07-21 15:46:19,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:46:19,781 INFO L225 Difference]: With dead ends: 62 [2020-07-21 15:46:19,781 INFO L226 Difference]: Without dead ends: 56 [2020-07-21 15:46:19,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 49.3s TimeCoverageRelationStatistics Valid=207, Invalid=1691, Unknown=2, NotChecked=170, Total=2070 [2020-07-21 15:46:19,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-21 15:46:19,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 44. [2020-07-21 15:46:19,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-21 15:46:19,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 66 transitions. [2020-07-21 15:46:19,799 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 66 transitions. Word has length 44 [2020-07-21 15:46:19,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:46:19,800 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 66 transitions. [2020-07-21 15:46:19,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-07-21 15:46:19,800 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 66 transitions. [2020-07-21 15:46:19,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-21 15:46:19,802 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:46:19,803 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:46:20,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:46:20,018 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:46:20,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:46:20,019 INFO L82 PathProgramCache]: Analyzing trace with hash -58046165, now seen corresponding path program 2 times [2020-07-21 15:46:20,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:46:20,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010896268] [2020-07-21 15:46:20,021 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 15:46:20,077 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:46:20,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:46:20,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 15:46:20,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:46:20,179 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-07-21 15:46:20,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:46:20,943 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:20,944 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 4 proven. 39 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-07-21 15:46:21,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010896268] [2020-07-21 15:46:21,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 15:46:21,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2020-07-21 15:46:21,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133305033] [2020-07-21 15:46:21,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 15:46:21,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:46:21,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 15:46:21,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-21 15:46:21,077 INFO L87 Difference]: Start difference. First operand 44 states and 66 transitions. Second operand 8 states. [2020-07-21 15:46:21,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:46:21,412 INFO L93 Difference]: Finished difference Result 50 states and 74 transitions. [2020-07-21 15:46:21,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 15:46:21,417 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-07-21 15:46:21,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:46:21,419 INFO L225 Difference]: With dead ends: 50 [2020-07-21 15:46:21,419 INFO L226 Difference]: Without dead ends: 44 [2020-07-21 15:46:21,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 101 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 15:46:21,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-21 15:46:21,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-21 15:46:21,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-21 15:46:21,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 65 transitions. [2020-07-21 15:46:21,430 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 65 transitions. Word has length 56 [2020-07-21 15:46:21,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:46:21,431 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 65 transitions. [2020-07-21 15:46:21,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 15:46:21,440 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 65 transitions. [2020-07-21 15:46:21,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-21 15:46:21,443 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:46:21,443 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:46:21,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:46:21,649 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:46:21,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:46:21,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1146349017, now seen corresponding path program 4 times [2020-07-21 15:46:21,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:46:21,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620857368] [2020-07-21 15:46:21,652 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 15:46:21,688 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:46:21,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:46:21,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 57 conjunts are in the unsatisfiable core [2020-07-21 15:46:21,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:46:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 15:46:22,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:46:23,543 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:46:23,544 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 15:46:24,227 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:24,228 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:24,229 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:46:24,236 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:46:24,238 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:26,057 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 3 conjuncts [2020-07-21 15:46:26,058 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:26,517 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:26,518 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:26,519 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:26,707 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 15:46:26,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620857368] [2020-07-21 15:46:26,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 15:46:26,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 32 [2020-07-21 15:46:26,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572366326] [2020-07-21 15:46:26,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-07-21 15:46:26,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:46:26,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-07-21 15:46:26,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=884, Unknown=0, NotChecked=0, Total=992 [2020-07-21 15:46:26,710 INFO L87 Difference]: Start difference. First operand 44 states and 65 transitions. Second operand 32 states. [2020-07-21 15:46:29,489 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:46:29,869 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 15:46:32,236 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:46:33,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:46:33,076 INFO L93 Difference]: Finished difference Result 78 states and 121 transitions. [2020-07-21 15:46:33,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-21 15:46:33,081 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 44 [2020-07-21 15:46:33,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:46:33,084 INFO L225 Difference]: With dead ends: 78 [2020-07-21 15:46:33,084 INFO L226 Difference]: Without dead ends: 67 [2020-07-21 15:46:33,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=346, Invalid=2204, Unknown=0, NotChecked=0, Total=2550 [2020-07-21 15:46:33,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-21 15:46:33,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 51. [2020-07-21 15:46:33,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-07-21 15:46:33,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 80 transitions. [2020-07-21 15:46:33,096 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 80 transitions. Word has length 44 [2020-07-21 15:46:33,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:46:33,097 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 80 transitions. [2020-07-21 15:46:33,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-07-21 15:46:33,097 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 80 transitions. [2020-07-21 15:46:33,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-21 15:46:33,099 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:46:33,099 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:46:33,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:46:33,305 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:46:33,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:46:33,306 INFO L82 PathProgramCache]: Analyzing trace with hash 901460287, now seen corresponding path program 3 times [2020-07-21 15:46:33,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:46:33,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487541225] [2020-07-21 15:46:33,308 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 15:46:33,353 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:46:33,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:46:33,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 15:46:33,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:46:33,422 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-07-21 15:46:33,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 15:46:33,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487541225] [2020-07-21 15:46:33,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 15:46:33,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 15:46:33,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713374210] [2020-07-21 15:46:33,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 15:46:33,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:46:33,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 15:46:33,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 15:46:33,424 INFO L87 Difference]: Start difference. First operand 51 states and 80 transitions. Second operand 5 states. [2020-07-21 15:46:33,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:46:33,666 INFO L93 Difference]: Finished difference Result 82 states and 136 transitions. [2020-07-21 15:46:33,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 15:46:33,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-07-21 15:46:33,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:46:33,674 INFO L225 Difference]: With dead ends: 82 [2020-07-21 15:46:33,674 INFO L226 Difference]: Without dead ends: 51 [2020-07-21 15:46:33,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 15:46:33,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-07-21 15:46:33,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-07-21 15:46:33,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-07-21 15:46:33,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 77 transitions. [2020-07-21 15:46:33,686 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 77 transitions. Word has length 50 [2020-07-21 15:46:33,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:46:33,686 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 77 transitions. [2020-07-21 15:46:33,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 15:46:33,687 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 77 transitions. [2020-07-21 15:46:33,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-21 15:46:33,688 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:46:33,688 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:46:33,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:46:33,902 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:46:33,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:46:33,903 INFO L82 PathProgramCache]: Analyzing trace with hash 921134702, now seen corresponding path program 5 times [2020-07-21 15:46:33,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:46:33,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054719985] [2020-07-21 15:46:33,904 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 15:46:33,958 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:46:33,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:46:33,962 WARN L261 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 97 conjunts are in the unsatisfiable core [2020-07-21 15:46:33,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:46:35,051 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 8 proven. 79 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-07-21 15:46:35,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:46:36,500 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:37,651 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:37,652 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:37,653 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:38,241 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:46:38,587 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:39,334 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:39,823 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:39,824 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:39,825 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:40,717 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:46:41,910 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:42,835 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:42,837 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:46:42,838 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:46:42,854 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 23 proven. 115 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-07-21 15:46:42,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054719985] [2020-07-21 15:46:42,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 15:46:42,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 26] total 36 [2020-07-21 15:46:42,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381928797] [2020-07-21 15:46:42,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-07-21 15:46:42,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:46:42,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-07-21 15:46:42,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1147, Unknown=0, NotChecked=0, Total=1260 [2020-07-21 15:46:42,915 INFO L87 Difference]: Start difference. First operand 51 states and 77 transitions. Second operand 36 states. [2020-07-21 15:46:45,221 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:46:49,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:46:49,762 INFO L93 Difference]: Finished difference Result 83 states and 126 transitions. [2020-07-21 15:46:49,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-07-21 15:46:49,762 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 65 [2020-07-21 15:46:49,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:46:49,764 INFO L225 Difference]: With dead ends: 83 [2020-07-21 15:46:49,765 INFO L226 Difference]: Without dead ends: 73 [2020-07-21 15:46:49,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 92 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=372, Invalid=2934, Unknown=0, NotChecked=0, Total=3306 [2020-07-21 15:46:49,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-21 15:46:49,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 59. [2020-07-21 15:46:49,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-21 15:46:49,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 99 transitions. [2020-07-21 15:46:49,778 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 99 transitions. Word has length 65 [2020-07-21 15:46:49,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:46:49,779 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 99 transitions. [2020-07-21 15:46:49,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-07-21 15:46:49,779 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 99 transitions. [2020-07-21 15:46:49,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-21 15:46:49,780 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:46:49,781 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:46:49,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:46:49,994 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:46:49,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:46:49,995 INFO L82 PathProgramCache]: Analyzing trace with hash 912513436, now seen corresponding path program 6 times [2020-07-21 15:46:49,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:46:49,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [317223469] [2020-07-21 15:46:49,996 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 15:46:50,043 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:46:50,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:46:50,046 WARN L261 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 97 conjunts are in the unsatisfiable core [2020-07-21 15:46:50,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:46:50,912 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 6 proven. 78 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-07-21 15:46:50,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:46:52,075 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:53,076 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:53,077 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:53,077 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:53,795 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:53,796 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:53,797 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:54,235 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:56,562 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:56,985 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:57,138 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:57,139 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:57,140 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:46:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 14 proven. 112 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 15:46:57,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [317223469] [2020-07-21 15:46:57,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 15:46:57,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20] total 29 [2020-07-21 15:46:57,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9264538] [2020-07-21 15:46:57,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-21 15:46:57,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:46:57,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-21 15:46:57,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=727, Unknown=0, NotChecked=0, Total=812 [2020-07-21 15:46:57,183 INFO L87 Difference]: Start difference. First operand 59 states and 99 transitions. Second operand 29 states. [2020-07-21 15:47:03,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:47:03,509 INFO L93 Difference]: Finished difference Result 83 states and 123 transitions. [2020-07-21 15:47:03,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-21 15:47:03,509 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 65 [2020-07-21 15:47:03,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:47:03,512 INFO L225 Difference]: With dead ends: 83 [2020-07-21 15:47:03,512 INFO L226 Difference]: Without dead ends: 73 [2020-07-21 15:47:03,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 99 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=250, Invalid=1912, Unknown=0, NotChecked=0, Total=2162 [2020-07-21 15:47:03,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-21 15:47:03,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 59. [2020-07-21 15:47:03,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-21 15:47:03,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 92 transitions. [2020-07-21 15:47:03,533 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 92 transitions. Word has length 65 [2020-07-21 15:47:03,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:47:03,534 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 92 transitions. [2020-07-21 15:47:03,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-21 15:47:03,534 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 92 transitions. [2020-07-21 15:47:03,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-21 15:47:03,536 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:47:03,537 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:47:03,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:47:03,739 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:47:03,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:47:03,740 INFO L82 PathProgramCache]: Analyzing trace with hash 646393945, now seen corresponding path program 4 times [2020-07-21 15:47:03,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:47:03,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623921511] [2020-07-21 15:47:03,741 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:47:03,791 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:47:03,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:47:03,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 15:47:03,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:47:03,906 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 52 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-07-21 15:47:03,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:47:04,875 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 52 proven. 5 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-07-21 15:47:04,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623921511] [2020-07-21 15:47:04,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 15:47:04,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-07-21 15:47:04,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566987300] [2020-07-21 15:47:04,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 15:47:04,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:47:04,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 15:47:04,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 15:47:04,878 INFO L87 Difference]: Start difference. First operand 59 states and 92 transitions. Second operand 7 states. [2020-07-21 15:47:05,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:47:05,193 INFO L93 Difference]: Finished difference Result 88 states and 131 transitions. [2020-07-21 15:47:05,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 15:47:05,201 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-07-21 15:47:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:47:05,202 INFO L225 Difference]: With dead ends: 88 [2020-07-21 15:47:05,202 INFO L226 Difference]: Without dead ends: 45 [2020-07-21 15:47:05,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 15:47:05,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-21 15:47:05,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-07-21 15:47:05,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-21 15:47:05,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2020-07-21 15:47:05,209 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 64 [2020-07-21 15:47:05,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:47:05,210 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2020-07-21 15:47:05,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 15:47:05,210 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2020-07-21 15:47:05,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-21 15:47:05,211 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:47:05,211 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:47:05,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:47:05,418 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:47:05,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:47:05,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1602258660, now seen corresponding path program 7 times [2020-07-21 15:47:05,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:47:05,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481028624] [2020-07-21 15:47:05,421 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:47:05,472 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:47:05,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:47:05,474 WARN L261 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 93 conjunts are in the unsatisfiable core [2020-07-21 15:47:05,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:47:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 32 proven. 80 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-07-21 15:47:07,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:47:09,376 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:47:11,323 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:47:11,323 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:47:12,983 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:47:12,984 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:47:14,333 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:47:14,335 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:47:15,540 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:47:15,541 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:47:16,518 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:47:16,519 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:47:16,520 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:47:17,540 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 15:47:18,001 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:47:18,425 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-07-21 15:47:18,986 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 15:47:18,991 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:47:18,992 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:47:18,993 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:47:18,993 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:47:18,994 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:47:18,995 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:47:18,996 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:47:18,997 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:47:18,997 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:49:10,477 WARN L193 SmtUtils]: Spent 26.42 s on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2020-07-21 15:49:12,512 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_prenex_3 Int)) (let ((.cse1 (* v_prenex_3 (- 1)))) (let ((.cse0 (div .cse1 (- 5)))) (or (< .cse0 (+ (div (+ .cse1 (* |c_mult_#res| (- 1))) (- 5)) 1)) (<= 3 (div (+ .cse1 (- 1)) (- 5))) (< .cse0 1))))) (forall ((v_mult_~n_BEFORE_CALL_52 Int)) (let ((.cse2 (* v_mult_~n_BEFORE_CALL_52 (- 1)))) (or (<= 3 (div (+ .cse2 (- 1)) (- 5))) (< (div .cse2 (- 5)) 1) (< (div (+ (* |c_mult_#res| (- 1)) .cse2 (- 1)) (- 5)) 3)))) (< |c_mult_#in~m| 1)) is different from false [2020-07-21 15:49:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 6 proven. 129 refuted. 0 times theorem prover too weak. 28 trivial. 7 not checked. [2020-07-21 15:49:13,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481028624] [2020-07-21 15:49:13,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 15:49:13,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 29] total 50 [2020-07-21 15:49:13,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472311492] [2020-07-21 15:49:13,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-07-21 15:49:13,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:49:13,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-07-21 15:49:13,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2151, Unknown=43, NotChecked=94, Total=2450 [2020-07-21 15:49:13,325 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand 50 states. [2020-07-21 15:49:18,957 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 42 DAG size of output: 11 [2020-07-21 15:49:32,405 WARN L193 SmtUtils]: Spent 902.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-07-21 15:49:35,630 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:49:38,653 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:49:41,672 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:49:45,439 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:49:48,098 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:49:51,154 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:49:53,791 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:49:58,093 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 15 [2020-07-21 15:50:01,315 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-07-21 15:50:04,280 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:50:07,233 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:50:11,997 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 15:50:16,015 WARN L193 SmtUtils]: Spent 690.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-21 15:50:18,877 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 15:50:22,686 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 15:50:23,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:50:23,516 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2020-07-21 15:50:23,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-21 15:50:23,541 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 65 [2020-07-21 15:50:23,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:50:23,543 INFO L225 Difference]: With dead ends: 77 [2020-07-21 15:50:23,543 INFO L226 Difference]: Without dead ends: 68 [2020-07-21 15:50:23,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 178.1s TimeCoverageRelationStatistics Valid=462, Invalid=4309, Unknown=63, NotChecked=136, Total=4970 [2020-07-21 15:50:23,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-21 15:50:23,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2020-07-21 15:50:23,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-21 15:50:23,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 73 transitions. [2020-07-21 15:50:23,555 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 73 transitions. Word has length 65 [2020-07-21 15:50:23,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:50:23,555 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 73 transitions. [2020-07-21 15:50:23,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-07-21 15:50:23,555 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 73 transitions. [2020-07-21 15:50:23,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-07-21 15:50:23,556 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:50:23,557 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:50:23,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:50:23,771 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:50:23,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:50:23,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1124697265, now seen corresponding path program 8 times [2020-07-21 15:50:23,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:50:23,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687848610] [2020-07-21 15:50:23,773 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:50:23,836 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:50:23,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:50:23,838 WARN L261 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 105 conjunts are in the unsatisfiable core [2020-07-21 15:50:23,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:50:29,305 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:50:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 37 proven. 104 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-07-21 15:50:31,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:50:32,386 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:50:32,535 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:50:32,758 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:50:32,870 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:50:33,062 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:50:33,252 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:50:33,543 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:50:33,670 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:50:33,867 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:34,063 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:34,348 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:50:34,470 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:50:34,658 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:34,848 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:35,140 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:50:35,261 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:50:35,459 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:35,652 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:35,938 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:50:36,061 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:50:36,257 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:36,447 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:36,735 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:50:36,856 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:50:37,037 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:50:37,209 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:50:37,945 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:50:37,954 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:50:38,768 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2020-07-21 15:50:39,457 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:50:39,785 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:50:39,940 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:50:40,160 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:50:40,278 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:50:40,457 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:50:40,647 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:50:40,926 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:50:41,045 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:50:41,232 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:41,433 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:41,714 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:50:41,831 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:50:42,025 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:42,217 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:42,512 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:50:42,623 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:50:42,809 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:42,997 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:43,285 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:50:43,409 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:50:43,604 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:43,793 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:44,576 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 15:50:44,585 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:50:44,585 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:50:44,586 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:50:44,586 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 15:50:45,285 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:50:46,005 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:50:46,339 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:50:46,490 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:50:46,714 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:50:46,827 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:50:47,013 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:50:47,202 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:50:47,475 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:50:47,594 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:50:47,786 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:47,983 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:48,266 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:50:48,386 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:50:48,580 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:48,774 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:49,058 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:50:49,190 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:50:49,390 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:49,579 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:50,430 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 15:50:50,438 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:50:50,440 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:50:51,234 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:50:52,063 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:50:52,411 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:50:52,563 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:50:52,799 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:50:52,918 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:50:53,112 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:50:53,308 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:50:53,605 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:50:53,734 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:50:53,942 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:54,148 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:54,439 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:50:54,566 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:50:54,766 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:54,972 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:55,904 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 15:50:55,912 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:50:55,913 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:50:56,725 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:50:57,551 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:50:57,888 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:50:58,035 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:50:58,258 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:50:58,376 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:50:58,565 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:50:58,751 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:50:59,028 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:50:59,148 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:50:59,348 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:50:59,548 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:51:00,468 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 15:51:00,475 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:51:00,476 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:51:00,476 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 15:51:01,330 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:51:02,198 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:51:02,519 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:51:02,658 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:51:02,881 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:51:02,997 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:51:03,195 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:51:03,387 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:51:04,366 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 15:51:04,374 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:51:04,375 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:51:05,185 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-07-21 15:51:06,054 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:51:06,375 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:51:06,530 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:51:07,502 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:51:07,510 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:51:07,511 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:51:07,511 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:51:09,343 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:51:09,664 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:51:09,807 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:51:10,019 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:51:10,181 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-21 15:51:10,404 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 15:51:10,627 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 15:51:11,839 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:51:13,081 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-07-21 15:51:13,430 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:51:13,567 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:51:14,854 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 15:51:14,862 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:51:14,863 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:51:14,864 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:51:14,865 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:51:14,865 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:51:14,866 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:51:14,866 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:51:14,867 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:51:14,868 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:51:16,904 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (< |c_mult_#in~m| 1))) (and (forall ((v_mult_~n_BEFORE_CALL_66 Int)) (let ((.cse1 (* v_mult_~n_BEFORE_CALL_66 (- 1)))) (let ((.cse0 (div .cse1 (- 6)))) (or (< .cse0 (+ (div (+ .cse1 (* |c_mult_#res| (- 1))) (- 6)) 1)) (<= 3 (div (+ .cse1 (- 1)) (- 6))) (< .cse0 1))))) (or .cse2 (forall ((v_mult_~n_BEFORE_CALL_66 Int)) (< (div (+ (* v_mult_~n_BEFORE_CALL_66 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 6)) 3))) .cse2 (forall ((v_mult_~n_BEFORE_CALL_66 Int)) (let ((.cse3 (* v_mult_~n_BEFORE_CALL_66 (- 1)))) (or (<= 3 (div (+ .cse3 (- 1)) (- 6))) (< (div .cse3 (- 6)) 1) (< (div (+ .cse3 (* |c_mult_#res| (- 1)) (- 1)) (- 6)) 3)))))) is different from false [2020-07-21 15:51:18,958 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (< |c_mult_#in~m| 1))) (and (forall ((v_mult_~n_BEFORE_CALL_66 Int)) (let ((.cse1 (* v_mult_~n_BEFORE_CALL_66 (- 1)))) (let ((.cse0 (div .cse1 (- 6)))) (or (< .cse0 (+ (div (+ .cse1 (* |c_mult_#res| (- 1))) (- 6)) 1)) (<= 3 (div (+ .cse1 (- 1)) (- 6))) (< .cse0 1))))) (forall ((v_prenex_5 Int)) (let ((.cse2 (* v_prenex_5 (- 1)))) (or (< (div (+ .cse2 (* |c_mult_#res| (- 1)) (- 1)) (- 6)) 3) (< (div .cse2 (- 6)) 1) (<= 3 (div (+ .cse2 (- 1)) (- 6)))))) (or .cse3 (forall ((v_prenex_4 Int)) (< (div (+ (* v_prenex_4 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 6)) 3))) .cse3)) is different from false [2020-07-21 15:51:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 5 proven. 165 refuted. 0 times theorem prover too weak. 36 trivial. 16 not checked. [2020-07-21 15:51:20,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687848610] [2020-07-21 15:51:20,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 15:51:20,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 32] total 55 [2020-07-21 15:51:20,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435757147] [2020-07-21 15:51:20,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-07-21 15:51:20,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:51:20,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-07-21 15:51:20,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2592, Unknown=2, NotChecked=206, Total=2970 [2020-07-21 15:51:20,032 INFO L87 Difference]: Start difference. First operand 55 states and 73 transitions. Second operand 55 states. [2020-07-21 15:52:05,605 WARN L193 SmtUtils]: Spent 43.44 s on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-07-21 15:52:10,813 WARN L193 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 37 DAG size of output: 11 [2020-07-21 15:52:12,496 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:52:13,341 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:52:14,481 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:52:15,937 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:52:18,952 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 50 [2020-07-21 15:52:20,066 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:52:22,248 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:52:23,129 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:52:25,732 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:52:27,352 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:52:28,478 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:52:29,960 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:52:31,055 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:52:32,536 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:52:38,929 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 15:52:42,493 WARN L193 SmtUtils]: Spent 873.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-21 15:52:44,193 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 15:52:47,082 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 15:52:50,529 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 15 [2020-07-21 15:52:53,414 WARN L193 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-07-21 15:52:54,815 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:52:56,311 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:52:56,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:52:56,320 INFO L93 Difference]: Finished difference Result 82 states and 106 transitions. [2020-07-21 15:52:56,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-21 15:52:56,320 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 72 [2020-07-21 15:52:56,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:52:56,322 INFO L225 Difference]: With dead ends: 82 [2020-07-21 15:52:56,322 INFO L226 Difference]: Without dead ends: 73 [2020-07-21 15:52:56,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 101.4s TimeCoverageRelationStatistics Valid=540, Invalid=5317, Unknown=3, NotChecked=302, Total=6162 [2020-07-21 15:52:56,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-21 15:52:56,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 60. [2020-07-21 15:52:56,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-21 15:52:56,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 83 transitions. [2020-07-21 15:52:56,333 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 83 transitions. Word has length 72 [2020-07-21 15:52:56,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:52:56,334 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 83 transitions. [2020-07-21 15:52:56,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-07-21 15:52:56,334 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 83 transitions. [2020-07-21 15:52:56,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-07-21 15:52:56,335 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:52:56,335 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:52:56,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:52:56,543 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:52:56,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:52:56,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1394734426, now seen corresponding path program 9 times [2020-07-21 15:52:56,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:52:56,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262298017] [2020-07-21 15:52:56,545 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:52:56,605 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:52:56,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:52:56,608 WARN L261 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 97 conjunts are in the unsatisfiable core [2020-07-21 15:52:56,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:52:57,118 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-07-21 15:52:57,528 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-07-21 15:52:58,044 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:52:58,611 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:53:00,767 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 4 proven. 83 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-07-21 15:53:00,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:53:01,623 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:53:01,903 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:53:02,072 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:53:02,332 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:53:02,468 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:53:02,694 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:53:02,920 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:53:03,265 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:53:03,407 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:53:03,625 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:53:03,842 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:53:04,454 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-07-21 15:53:04,463 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:53:05,058 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:53:05,169 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:53:05,341 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:53:05,515 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:53:05,777 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:53:05,912 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:53:06,135 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:53:06,356 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:53:07,029 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:53:07,038 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:53:07,039 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:53:07,040 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:53:07,637 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:53:07,745 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:53:07,922 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:53:08,097 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:53:08,800 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:53:08,810 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:53:10,109 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-07-21 15:53:10,220 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:53:10,331 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:53:10,525 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:53:10,703 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:53:10,972 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:53:11,109 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:53:11,335 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:53:11,552 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:53:11,888 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:53:12,033 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:53:12,269 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:53:12,507 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:53:12,853 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:53:13,002 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:53:13,242 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:53:13,480 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:53:13,825 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:53:13,973 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:53:14,193 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:53:14,410 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:53:15,053 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-07-21 15:53:15,774 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:53:15,889 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:53:16,004 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:53:16,193 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:53:16,390 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:53:16,660 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:53:16,795 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:53:17,023 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:53:17,248 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:53:17,588 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:53:17,734 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:53:17,968 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:53:18,204 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:53:18,545 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:53:18,692 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:53:18,926 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:53:19,159 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:53:19,915 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:53:19,925 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:53:20,619 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:53:20,732 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:53:20,911 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:53:21,089 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:53:21,367 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:53:21,505 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:53:21,735 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:53:21,964 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:53:22,308 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:53:22,456 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:53:22,688 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:53:22,918 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:53:23,732 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:53:23,741 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:53:23,742 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:53:23,742 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:53:24,012 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:53:24,126 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:53:24,289 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:53:24,471 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:53:24,738 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:53:24,875 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:53:25,099 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:53:25,330 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:53:25,341 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:53:25,342 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:53:25,343 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:53:25,448 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:53:25,560 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:53:25,735 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:53:25,913 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:53:25,923 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:53:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 8 proven. 118 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-21 15:53:26,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262298017] [2020-07-21 15:53:26,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 15:53:26,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 31 [2020-07-21 15:53:26,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692542417] [2020-07-21 15:53:26,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-21 15:53:26,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:53:26,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-21 15:53:26,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2020-07-21 15:53:26,075 INFO L87 Difference]: Start difference. First operand 60 states and 83 transitions. Second operand 31 states. [2020-07-21 15:53:27,380 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:53:28,675 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:53:29,273 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:53:30,011 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:53:32,678 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:53:33,300 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:53:34,359 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 15:53:35,327 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:53:36,786 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:53:39,232 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:53:40,511 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-21 15:53:41,913 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:53:43,355 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:53:44,883 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:53:45,863 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:53:46,780 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:53:47,724 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:53:48,443 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:53:48,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:53:48,766 INFO L93 Difference]: Finished difference Result 83 states and 115 transitions. [2020-07-21 15:53:48,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-21 15:53:48,796 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 65 [2020-07-21 15:53:48,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:53:48,798 INFO L225 Difference]: With dead ends: 83 [2020-07-21 15:53:48,799 INFO L226 Difference]: Without dead ends: 71 [2020-07-21 15:53:48,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=333, Invalid=2319, Unknown=0, NotChecked=0, Total=2652 [2020-07-21 15:53:48,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-07-21 15:53:48,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 60. [2020-07-21 15:53:48,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-21 15:53:48,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2020-07-21 15:53:48,812 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 80 transitions. Word has length 65 [2020-07-21 15:53:48,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:53:48,812 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 80 transitions. [2020-07-21 15:53:48,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-21 15:53:48,813 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 80 transitions. [2020-07-21 15:53:48,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-21 15:53:48,814 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:53:48,814 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:53:49,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:53:49,028 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:53:49,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:53:49,029 INFO L82 PathProgramCache]: Analyzing trace with hash -180332919, now seen corresponding path program 10 times [2020-07-21 15:53:49,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:53:49,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908074461] [2020-07-21 15:53:49,030 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:53:49,112 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:53:49,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:53:49,115 WARN L261 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 133 conjunts are in the unsatisfiable core [2020-07-21 15:53:49,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:53:49,617 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-07-21 15:53:50,017 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-07-21 15:53:51,279 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:53:51,970 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:53:52,738 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:53:53,559 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:53:54,454 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:53:56,323 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 14 proven. 160 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2020-07-21 15:53:56,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:53:57,664 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:53:57,840 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:53:58,103 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:53:58,238 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:53:58,464 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:53:58,686 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:53:59,016 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:53:59,156 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:53:59,375 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:53:59,611 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:53:59,933 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:54:00,082 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:00,311 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:00,528 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:00,872 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:54:01,011 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:01,236 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:01,469 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:01,801 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:54:01,950 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:02,182 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:02,399 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:02,743 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:54:02,883 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:03,104 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:03,341 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:03,669 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:54:03,814 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:04,030 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:54:04,239 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:54:05,014 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-07-21 15:54:05,024 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:05,822 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:54:06,000 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:54:06,169 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:54:06,417 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:54:06,554 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:54:06,776 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:54:06,988 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:54:07,325 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:54:07,468 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:07,702 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:07,935 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:08,271 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:54:08,409 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:08,640 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:08,871 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:09,189 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:54:09,338 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:09,570 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:09,792 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:10,126 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:54:10,268 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:10,491 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:10,721 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:11,024 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:54:11,148 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:11,360 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:11,570 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:12,375 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:54:12,383 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:13,447 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:54:13,719 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:54:13,902 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:54:14,160 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:54:14,293 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:54:14,520 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:54:14,736 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:54:15,071 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:54:15,213 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:15,438 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:15,674 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:16,009 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:54:16,155 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:16,385 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:16,617 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:16,953 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:54:17,096 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:17,328 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:17,563 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:17,913 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:54:18,054 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:18,289 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:18,524 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:19,370 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:54:19,379 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:19,379 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:19,380 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:20,360 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:54:20,470 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:54:20,651 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:54:20,827 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:54:21,095 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:54:21,232 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:54:21,460 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:54:21,684 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:54:22,026 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:54:22,171 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:22,406 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:22,643 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:22,991 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:54:23,136 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:23,375 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:23,612 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:23,959 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:54:24,108 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:24,349 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:24,585 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:25,511 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:54:25,521 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:26,312 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:54:26,428 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:54:26,610 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:54:26,790 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:54:27,064 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:54:27,204 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:54:27,432 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:54:27,662 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:54:28,022 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:54:28,169 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:28,411 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:28,652 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:29,000 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:54:29,153 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:29,393 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:29,633 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:30,550 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:54:30,558 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:30,559 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:30,559 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:31,381 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:54:31,563 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:54:31,747 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:54:32,016 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:54:32,152 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:54:32,379 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:54:32,603 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:54:32,948 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:54:33,095 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:33,332 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:33,566 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:54:34,535 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:54:34,544 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:34,545 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:34,545 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:35,505 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:54:35,617 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:54:35,793 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:54:35,970 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:54:36,234 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:54:36,370 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:54:36,594 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:54:36,815 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:54:37,824 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:54:37,833 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:37,834 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:37,835 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:38,635 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:54:38,754 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:54:38,930 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:54:39,104 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:54:40,043 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:54:40,051 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:40,052 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:40,052 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:41,946 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-07-21 15:54:42,056 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:54:42,163 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:54:42,343 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:54:42,518 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:54:42,781 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:54:42,919 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:54:43,141 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:54:43,366 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:54:43,691 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:54:43,839 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:44,057 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:54:44,267 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:54:45,256 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-07-21 15:54:46,369 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:54:46,478 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:54:46,593 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:54:46,770 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:54:46,943 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:54:47,211 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:54:47,346 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:54:47,561 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:54:47,785 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:54:48,857 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:54:48,867 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:49,921 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:54:51,216 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:54:51,331 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:54:51,441 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:54:51,612 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:54:51,782 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:54:53,048 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:54:53,058 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:53,077 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:53,078 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:54:53,273 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 32 proven. 256 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-07-21 15:54:53,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908074461] [2020-07-21 15:54:53,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 15:54:53,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 35] total 48 [2020-07-21 15:54:53,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577870626] [2020-07-21 15:54:53,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-07-21 15:54:53,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:54:53,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-07-21 15:54:53,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=2101, Unknown=0, NotChecked=0, Total=2256 [2020-07-21 15:54:53,276 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand 48 states. [2020-07-21 15:54:55,333 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:54:57,234 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:54:57,961 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:54:59,425 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:55:00,787 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:55:02,786 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:55:04,141 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:55:05,794 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:55:06,982 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:55:08,030 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:55:09,360 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:55:12,362 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:55:13,231 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:55:14,823 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:55:15,729 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:55:17,229 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:55:18,048 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:55:20,045 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 15:55:21,850 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:55:23,357 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:55:25,902 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:55:27,373 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:55:29,001 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:55:31,023 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:55:32,282 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:55:32,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:55:32,865 INFO L93 Difference]: Finished difference Result 85 states and 115 transitions. [2020-07-21 15:55:32,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-21 15:55:32,896 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 86 [2020-07-21 15:55:32,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:55:32,898 INFO L225 Difference]: With dead ends: 85 [2020-07-21 15:55:32,898 INFO L226 Difference]: Without dead ends: 75 [2020-07-21 15:55:32,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 120 SyntacticMatches, 5 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 46.4s TimeCoverageRelationStatistics Valid=522, Invalid=4734, Unknown=0, NotChecked=0, Total=5256 [2020-07-21 15:55:32,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-07-21 15:55:32,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 54. [2020-07-21 15:55:32,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-21 15:55:32,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 71 transitions. [2020-07-21 15:55:32,916 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 71 transitions. Word has length 86 [2020-07-21 15:55:32,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:55:32,917 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 71 transitions. [2020-07-21 15:55:32,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-07-21 15:55:32,917 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 71 transitions. [2020-07-21 15:55:32,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-21 15:55:32,918 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:55:32,918 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 9, 9, 9, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:55:33,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:55:33,134 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:55:33,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:55:33,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1080603673, now seen corresponding path program 11 times [2020-07-21 15:55:33,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:55:33,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634120596] [2020-07-21 15:55:33,136 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:55:33,224 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:55:33,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:55:33,227 WARN L261 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 129 conjunts are in the unsatisfiable core [2020-07-21 15:55:33,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:55:33,763 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-07-21 15:55:35,595 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-07-21 15:55:36,262 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-07-21 15:55:37,027 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:55:37,858 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:55:38,764 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:55:39,737 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:55:40,784 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:55:41,890 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:55:43,341 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-07-21 15:55:44,218 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-07-21 15:55:44,236 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 47 proven. 161 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-07-21 15:55:44,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:55:45,854 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:55:46,035 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:55:46,214 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:55:46,474 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:55:46,615 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:55:46,844 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:55:47,068 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:55:47,416 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:55:47,564 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:55:47,793 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:55:48,026 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:55:48,371 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:55:48,511 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:55:48,742 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:55:48,980 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:55:49,315 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:55:49,466 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:55:49,703 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:55:49,931 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:55:50,277 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:55:50,420 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:55:50,648 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:55:50,875 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:55:51,173 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:55:51,309 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:55:51,525 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:55:51,736 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:55:52,049 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:55:52,178 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:55:52,419 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:55:52,667 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:55:53,016 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:55:53,165 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:55:53,384 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:55:53,615 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:55:54,643 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:55:54,653 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:55:55,749 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2020-07-21 15:55:56,703 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:55:56,814 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:55:56,926 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:55:57,109 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:55:57,289 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:55:57,564 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:55:57,704 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:55:57,936 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:55:58,161 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:55:58,513 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:55:58,663 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:55:58,903 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:55:59,147 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:55:59,496 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:55:59,643 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:55:59,889 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:00,132 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:00,485 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:56:00,635 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:56:00,875 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:01,121 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:01,482 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:56:01,635 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:56:01,881 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:02,128 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:02,484 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:56:02,640 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:56:02,888 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:03,135 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:03,497 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:56:03,652 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:56:03,901 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:04,150 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:05,281 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 15:56:05,291 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:56:05,292 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:56:05,292 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 15:56:05,293 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 15:56:06,232 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:56:07,161 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:56:07,276 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:56:07,393 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:56:07,578 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:56:07,761 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:56:08,062 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:56:08,207 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:56:08,440 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:56:08,674 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:56:09,024 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:56:09,176 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:56:09,418 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:09,659 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:10,010 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:56:10,167 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:56:10,410 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:10,646 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:10,997 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:56:11,147 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:56:11,388 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:11,631 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:11,984 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:56:12,128 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:56:12,374 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:12,616 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:12,973 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:56:13,123 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:56:13,367 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:13,610 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:14,793 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 15:56:14,803 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:56:14,806 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 15:56:14,807 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:56:15,839 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:56:16,894 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:56:17,012 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:56:17,125 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:56:17,306 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:56:17,486 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:56:17,760 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:56:17,897 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:56:18,131 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:56:18,360 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:56:18,711 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:56:18,856 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:56:19,102 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:19,343 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:19,694 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:56:19,840 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:56:20,081 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:20,323 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:20,675 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:56:20,824 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:56:21,061 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:21,318 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:21,660 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:56:21,813 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:56:22,061 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:22,300 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:23,474 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 15:56:23,484 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:56:23,484 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:56:23,485 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 15:56:24,556 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:56:25,662 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:56:25,774 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:56:25,886 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:56:26,071 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:56:26,250 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:56:26,513 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:56:26,657 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:56:26,887 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:56:27,110 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:56:27,464 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:56:27,610 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:56:27,846 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:28,090 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:28,428 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:56:28,583 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:56:28,823 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:29,059 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:29,408 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:56:29,565 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:56:29,811 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:30,056 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:31,271 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 15:56:31,281 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:56:31,282 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:56:32,393 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:56:33,507 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:56:33,615 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:56:33,884 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:56:34,045 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:56:34,288 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:56:34,421 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:56:34,643 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:56:34,868 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:56:35,202 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:56:35,351 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:56:35,582 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:35,813 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:36,133 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:56:36,262 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:56:36,478 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:36,694 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:37,916 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 15:56:37,926 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:56:37,927 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:56:39,102 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:56:40,296 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:56:40,410 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:56:40,520 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:56:40,697 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:56:40,882 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:56:41,151 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:56:41,297 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:56:41,529 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:56:41,756 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:56:42,111 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:56:42,258 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:56:42,500 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:42,739 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:56:44,080 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 15:56:44,091 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:56:44,092 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 15:56:44,093 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:56:45,312 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:56:46,584 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:56:46,701 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:56:46,817 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:56:47,001 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:56:47,186 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:56:47,465 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:56:47,610 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:56:47,846 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:56:48,084 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:56:49,506 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-21 15:56:49,517 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:56:49,517 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:56:49,518 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 15:56:50,783 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-07-21 15:56:52,120 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:56:52,239 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:56:52,358 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:56:52,546 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:56:52,734 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:56:54,165 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:56:54,176 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:56:54,177 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:56:54,177 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:56:56,762 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:56:56,878 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:56:57,001 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:56:57,175 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:56:57,348 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:56:57,614 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:56:57,811 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-07-21 15:56:58,086 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 15:56:58,354 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-07-21 15:57:00,029 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:57:01,706 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-07-21 15:57:01,824 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:57:01,940 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:57:02,110 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:57:02,277 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:57:04,041 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-21 15:57:04,050 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:57:04,051 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:57:04,052 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:57:04,052 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 15:57:04,053 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:57:04,054 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:57:04,054 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:57:04,055 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:57:04,055 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:57:06,085 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (< |c_mult_#in~m| 1))) (and (forall ((v_mult_~n_BEFORE_CALL_114 Int)) (let ((.cse0 (* v_mult_~n_BEFORE_CALL_114 (- 1)))) (or (< (div (+ .cse0 (* |c_mult_#res| (- 1)) (- 1)) (- 8)) 3) (<= 3 (div (+ .cse0 (- 1)) (- 8))) (< (div .cse0 (- 8)) 1)))) .cse1 (forall ((v_mult_~n_BEFORE_CALL_114 Int)) (let ((.cse2 (* v_mult_~n_BEFORE_CALL_114 (- 1)))) (let ((.cse3 (div .cse2 (- 8)))) (or (<= 3 (div (+ .cse2 (- 1)) (- 8))) (< .cse3 (+ (div (+ .cse2 (* |c_mult_#res| (- 1))) (- 8)) 1)) (< .cse3 1))))) (or .cse1 (forall ((v_mult_~n_BEFORE_CALL_114 Int)) (< (div (+ (* v_mult_~n_BEFORE_CALL_114 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 8)) 3))))) is different from false [2020-07-21 15:57:08,137 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (< |c_mult_#in~m| 1))) (and (or (forall ((v_prenex_7 Int)) (< (div (+ (* v_prenex_7 (- 1)) (* |c_mult_#res| (- 1)) (- 1)) (- 8)) 3)) .cse0) (forall ((v_mult_~n_BEFORE_CALL_114 Int)) (let ((.cse1 (* v_mult_~n_BEFORE_CALL_114 (- 1)))) (or (< (div (+ .cse1 (* |c_mult_#res| (- 1)) (- 1)) (- 8)) 3) (<= 3 (div (+ .cse1 (- 1)) (- 8))) (< (div .cse1 (- 8)) 1)))) .cse0 (forall ((v_prenex_6 Int)) (let ((.cse2 (* v_prenex_6 (- 1)))) (let ((.cse3 (div .cse2 (- 8)))) (or (<= 3 (div (+ .cse2 (- 1)) (- 8))) (< .cse3 1) (< .cse3 (+ (div (+ .cse2 (* |c_mult_#res| (- 1))) (- 8)) 1)))))))) is different from false [2020-07-21 15:57:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 5 proven. 267 refuted. 0 times theorem prover too weak. 55 trivial. 20 not checked. [2020-07-21 15:57:09,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634120596] [2020-07-21 15:57:09,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 15:57:09,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 38] total 65 [2020-07-21 15:57:09,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758493967] [2020-07-21 15:57:09,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-07-21 15:57:09,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:57:09,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-07-21 15:57:09,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3714, Unknown=2, NotChecked=246, Total=4160 [2020-07-21 15:57:09,615 INFO L87 Difference]: Start difference. First operand 54 states and 71 transitions. Second operand 65 states. [2020-07-21 15:57:14,503 WARN L193 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 49 DAG size of output: 11 [2020-07-21 15:57:17,348 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:57:18,324 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:57:19,549 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:57:21,228 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:57:24,833 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification that was a NOOP. DAG size: 50 [2020-07-21 15:57:26,122 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:57:28,639 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:57:29,640 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:57:32,640 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:57:34,540 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:57:35,897 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:57:37,643 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:57:38,967 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:57:40,728 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:57:42,004 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:57:43,743 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:57:45,034 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:57:46,791 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:57:50,153 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 15:57:53,406 WARN L193 SmtUtils]: Spent 912.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-07-21 15:57:55,416 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 15:57:59,926 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 15 [2020-07-21 15:58:02,551 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 14 [2020-07-21 15:58:04,235 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:58:05,891 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:58:08,010 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-07-21 15:58:10,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:58:10,946 INFO L93 Difference]: Finished difference Result 90 states and 118 transitions. [2020-07-21 15:58:10,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-21 15:58:10,979 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 86 [2020-07-21 15:58:10,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:58:10,980 INFO L225 Difference]: With dead ends: 90 [2020-07-21 15:58:10,980 INFO L226 Difference]: Without dead ends: 81 [2020-07-21 15:58:10,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 106 SyntacticMatches, 3 SemanticMatches, 90 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1310 ImplicationChecksByTransitivity, 83.4s TimeCoverageRelationStatistics Valid=655, Invalid=7361, Unknown=2, NotChecked=354, Total=8372 [2020-07-21 15:58:10,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-07-21 15:58:11,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 68. [2020-07-21 15:58:11,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-21 15:58:11,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-07-21 15:58:11,005 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 86 [2020-07-21 15:58:11,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:58:11,005 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-07-21 15:58:11,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-07-21 15:58:11,006 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-07-21 15:58:11,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-07-21 15:58:11,007 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:58:11,007 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:58:11,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:58:11,215 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:58:11,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:58:11,216 INFO L82 PathProgramCache]: Analyzing trace with hash -567080281, now seen corresponding path program 12 times [2020-07-21 15:58:11,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:58:11,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688944850] [2020-07-21 15:58:11,217 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:58:11,329 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:58:11,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:58:11,334 WARN L261 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 157 conjunts are in the unsatisfiable core [2020-07-21 15:58:11,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:58:11,942 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-07-21 15:58:12,385 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-07-21 15:58:12,929 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:58:13,566 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:58:14,279 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:58:15,054 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:58:18,369 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 10 proven. 228 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2020-07-21 15:58:18,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:58:19,544 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:58:19,664 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:58:19,853 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:58:20,043 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:58:20,330 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:58:20,480 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:58:20,724 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:58:20,972 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:58:21,336 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:58:21,492 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:58:21,747 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:22,000 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:22,367 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:58:22,528 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:58:22,798 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:23,046 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:23,415 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:58:23,572 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:58:23,822 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:24,071 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:24,436 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:58:24,586 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:58:24,830 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:58:25,057 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:58:25,851 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-07-21 15:58:25,858 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:58:26,569 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:58:26,688 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:58:26,876 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:58:27,065 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:58:27,344 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:58:27,490 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:58:27,722 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:58:27,967 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:58:28,326 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:58:28,485 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:58:28,732 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:28,983 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:29,345 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:58:29,497 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:58:29,743 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:29,997 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:30,355 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:58:30,509 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:58:30,757 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:31,010 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:31,852 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:58:31,862 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:58:32,587 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:58:32,697 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:58:32,855 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:58:33,025 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:58:33,276 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:58:33,403 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:58:33,624 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:58:33,835 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:58:34,159 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:58:34,309 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:58:34,558 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:34,806 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:35,179 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:58:35,344 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:58:35,591 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:35,843 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:36,727 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:58:36,737 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:58:36,738 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:58:36,738 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:58:37,484 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:58:37,595 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:58:37,787 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:58:37,976 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:58:38,252 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:58:38,396 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:58:38,642 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:58:38,877 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:58:39,239 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:58:39,395 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:58:39,630 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:39,878 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:40,792 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:58:40,802 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:58:40,802 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:58:40,803 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:58:41,735 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:58:41,856 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:58:42,045 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:58:42,229 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:58:42,523 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:58:42,667 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:58:42,904 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:58:43,146 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:58:44,098 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:58:44,109 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:58:44,109 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:58:44,110 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:58:44,893 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:58:45,008 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:58:45,201 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:58:45,391 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:58:46,355 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:58:46,365 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:58:46,366 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:58:46,366 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:58:48,220 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-07-21 15:58:48,343 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:58:48,463 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:58:48,655 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:58:48,857 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:58:49,147 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:58:49,293 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:58:49,540 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:58:49,785 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:58:50,156 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:58:50,313 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:58:50,566 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:50,821 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:51,194 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:58:51,355 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:58:51,618 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:51,877 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:52,251 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:58:52,412 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:58:52,671 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:52,929 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:53,307 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:58:53,467 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:58:53,725 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:53,986 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:54,360 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:58:54,521 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:58:54,761 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:58:55,000 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:58:55,973 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-07-21 15:58:57,056 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:58:57,180 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:58:57,303 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-07-21 15:58:57,497 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:58:57,684 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:58:57,971 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:58:58,121 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:58:58,369 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:58:58,633 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:58:59,002 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:58:59,167 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:58:59,425 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:58:59,683 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:00,058 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:59:00,217 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:00,474 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:00,736 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:01,105 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:59:01,262 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:01,515 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:01,767 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:02,140 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:59:02,301 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:02,555 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:02,806 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:03,445 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:59:04,592 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:05,888 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-07-21 15:59:06,214 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:59:06,361 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:59:06,582 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:59:06,690 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:59:06,870 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:59:07,054 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:59:07,334 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:59:07,453 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:07,647 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:07,833 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:08,070 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:59:08,359 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:08,551 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:08,824 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:59:08,938 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:09,131 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:09,327 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:10,319 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-07-21 15:59:10,327 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:59:10,341 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:59:10,342 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 15:59:11,250 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2020-07-21 15:59:12,154 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:59:12,266 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:59:12,453 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:59:12,684 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:59:12,831 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:59:13,064 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:59:13,184 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:13,385 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:13,576 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:13,860 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:59:13,982 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:14,173 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:14,369 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:15,401 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-07-21 15:59:15,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688944850] [2020-07-21 15:59:15,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 15:59:15,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-07-21 15:59:15,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222480213] [2020-07-21 15:59:15,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-21 15:59:15,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 15:59:15,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-21 15:59:15,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1834, Unknown=0, NotChecked=0, Total=1980 [2020-07-21 15:59:15,411 INFO L87 Difference]: Start difference. First operand 68 states and 94 transitions. Second operand 21 states. [2020-07-21 15:59:16,596 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:59:17,721 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:18,245 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:59:19,672 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:20,760 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:59:21,307 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:22,410 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:23,240 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:59:23,793 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:24,636 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:59:25,153 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:27,674 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:28,438 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:28,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 15:59:28,690 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2020-07-21 15:59:28,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-21 15:59:28,715 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 100 [2020-07-21 15:59:28,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 15:59:28,716 INFO L225 Difference]: With dead ends: 76 [2020-07-21 15:59:28,716 INFO L226 Difference]: Without dead ends: 72 [2020-07-21 15:59:28,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 33.4s TimeCoverageRelationStatistics Valid=362, Invalid=3178, Unknown=0, NotChecked=0, Total=3540 [2020-07-21 15:59:28,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-07-21 15:59:28,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2020-07-21 15:59:28,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-07-21 15:59:28,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 90 transitions. [2020-07-21 15:59:28,726 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 90 transitions. Word has length 100 [2020-07-21 15:59:28,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 15:59:28,727 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 90 transitions. [2020-07-21 15:59:28,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-21 15:59:28,727 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2020-07-21 15:59:28,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-07-21 15:59:28,728 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 15:59:28,728 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 11, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 15:59:28,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:59:28,932 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 15:59:28,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 15:59:28,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1182847487, now seen corresponding path program 13 times [2020-07-21 15:59:28,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 15:59:28,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109329566] [2020-07-21 15:59:28,933 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 15:59:29,047 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 15:59:29,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 15:59:29,050 WARN L261 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 157 conjunts are in the unsatisfiable core [2020-07-21 15:59:29,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 15:59:36,462 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 18 proven. 229 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-07-21 15:59:36,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 15:59:37,815 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:59:37,933 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:59:38,100 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:59:38,342 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:59:38,485 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:59:38,701 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:59:38,951 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:39,103 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:39,346 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:59:39,610 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:39,810 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:40,108 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:59:40,234 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:40,417 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:40,597 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:40,862 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:59:40,978 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:41,161 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:41,334 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:41,588 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:59:41,714 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:41,914 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:42,114 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:42,373 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:59:42,503 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:42,699 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:42,891 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:43,178 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:59:43,303 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:43,503 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:43,687 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:43,950 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:59:44,070 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:44,256 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:59:44,443 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-21 15:59:45,207 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:59:46,052 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:59:46,192 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-07-21 15:59:46,410 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 15:59:46,519 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-21 15:59:46,712 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:59:46,892 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 15:59:47,169 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 15:59:47,285 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:47,472 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:47,660 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:47,915 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:59:48,201 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:48,386 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:48,658 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:59:48,773 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:48,963 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:49,156 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:49,429 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:59:49,559 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:49,767 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:49,979 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:50,278 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:59:50,405 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:50,609 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:50,816 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:51,065 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:59:51,177 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:51,366 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:51,560 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:51,853 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-07-21 15:59:51,983 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-07-21 15:59:52,195 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:52,405 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-07-21 15:59:53,224 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-07-21 15:59:53,232 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:59:53,233 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 15:59:53,233 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts