/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 BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:20:42,566 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 01:20:42,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:20:42,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:20:42,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:20:42,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:20:42,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:20:42,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:20:42,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:20:42,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:20:42,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:20:42,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:20:42,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:20:42,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:20:42,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:20:42,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:20:42,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:20:42,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:20:42,618 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 01:20:42,637 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:20:42,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:20:42,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:20:42,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:20:42,640 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:20:42,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:20:42,640 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:20:42,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:20:42,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:20:42,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:20:42,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:20:42,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:20:42,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:20:42,642 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:20:42,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:20:42,642 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:20:42,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:20:42,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:20:42,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:20:42,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:20:42,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:20:42,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:20:42,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:20:42,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:20:42,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:20:42,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:20:42,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:20:42,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:20:42,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:20:42,646 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 -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 01:20:42,963 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:20:42,980 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:20:42,984 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:20:42,986 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:20:42,988 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:20:42,989 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-07-21 01:20:43,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5127cf3a5/7eabebf8980642ee9b07486afc9ac607/FLAG0c85d3d33 [2020-07-21 01:20:43,672 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:20:43,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-07-21 01:20:43,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5127cf3a5/7eabebf8980642ee9b07486afc9ac607/FLAG0c85d3d33 [2020-07-21 01:20:43,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5127cf3a5/7eabebf8980642ee9b07486afc9ac607 [2020-07-21 01:20:43,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:20:43,937 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:20:43,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:20:43,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:20:43,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:20:43,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:20:43" (1/1) ... [2020-07-21 01:20:43,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5593a083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:20:43, skipping insertion in model container [2020-07-21 01:20:43,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:20:43" (1/1) ... [2020-07-21 01:20:43,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:20:44,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:20:44,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:20:44,460 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:20:44,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:20:44,739 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:20:44,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:20:44 WrapperNode [2020-07-21 01:20:44,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:20:44,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:20:44,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:20:44,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:20:44,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:20:44" (1/1) ... [2020-07-21 01:20:44,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:20:44" (1/1) ... [2020-07-21 01:20:44,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:20:44" (1/1) ... [2020-07-21 01:20:44,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:20:44" (1/1) ... [2020-07-21 01:20:44,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:20:44" (1/1) ... [2020-07-21 01:20:44,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:20:44" (1/1) ... [2020-07-21 01:20:44,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:20:44" (1/1) ... [2020-07-21 01:20:44,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:20:44,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:20:44,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:20:44,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:20:44,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:20:44" (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 01:20:44,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:20:44,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:20:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 01:20:44,916 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:20:44,916 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 01:20:44,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:20:44,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:20:44,916 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 01:20:44,917 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:20:44,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:20:44,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:20:46,053 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:20:46,053 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 01:20:46,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:20:46 BoogieIcfgContainer [2020-07-21 01:20:46,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:20:46,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:20:46,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:20:46,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:20:46,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:20:43" (1/3) ... [2020-07-21 01:20:46,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb9719b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:20:46, skipping insertion in model container [2020-07-21 01:20:46,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:20:44" (2/3) ... [2020-07-21 01:20:46,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb9719b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:20:46, skipping insertion in model container [2020-07-21 01:20:46,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:20:46" (3/3) ... [2020-07-21 01:20:46,068 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label42.c [2020-07-21 01:20:46,079 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:20:46,088 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:20:46,102 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:20:46,129 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:20:46,129 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:20:46,129 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:20:46,129 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:20:46,130 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:20:46,130 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:20:46,130 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:20:46,130 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:20:46,155 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 01:20:46,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-07-21 01:20:46,168 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:20:46,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:20:46,170 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:20:46,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:20:46,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1328102103, now seen corresponding path program 1 times [2020-07-21 01:20:46,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:20:46,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275318638] [2020-07-21 01:20:46,187 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 01:20:46,422 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:20:46,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:20:46,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-21 01:20:46,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:20:46,870 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-07-21 01:20:47,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:20:47,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:20:47,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275318638] [2020-07-21 01:20:47,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:20:47,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-21 01:20:47,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242388553] [2020-07-21 01:20:47,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 01:20:47,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:20:47,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 01:20:47,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:20:47,441 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 11 states. [2020-07-21 01:20:49,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:20:49,115 INFO L93 Difference]: Finished difference Result 472 states and 791 transitions. [2020-07-21 01:20:49,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:20:49,117 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 121 [2020-07-21 01:20:49,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:20:49,129 INFO L225 Difference]: With dead ends: 472 [2020-07-21 01:20:49,129 INFO L226 Difference]: Without dead ends: 203 [2020-07-21 01:20:49,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-07-21 01:20:49,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-21 01:20:49,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-07-21 01:20:49,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-21 01:20:49,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 275 transitions. [2020-07-21 01:20:49,245 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 275 transitions. Word has length 121 [2020-07-21 01:20:49,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:20:49,246 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 275 transitions. [2020-07-21 01:20:49,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 01:20:49,246 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 275 transitions. [2020-07-21 01:20:49,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-07-21 01:20:49,254 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:20:49,254 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:20:49,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:20:49,456 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:20:49,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:20:49,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1343862876, now seen corresponding path program 1 times [2020-07-21 01:20:49,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:20:49,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050604453] [2020-07-21 01:20:49,459 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 01:20:49,560 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:20:49,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:20:49,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-21 01:20:49,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:20:49,920 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2020-07-21 01:20:50,304 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:20:50,309 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-07-21 01:20:50,309 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 01:20:50,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:20:50,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:20:51,116 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-07-21 01:20:51,267 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 01:20:51,407 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 01:20:51,537 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 01:20:51,541 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 7 conjuncts [2020-07-21 01:20:51,543 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 6 conjuncts [2020-07-21 01:20:51,545 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 01:20:51,546 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 01:20:51,548 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:20:51,549 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 01:20:51,554 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 01:20:51,555 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 01:20:51,557 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:20:51,565 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:20:51,567 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:20:51,570 INFO L501 QuantifierPusher]: Distributing 14 disjuncts over 3 conjuncts [2020-07-21 01:20:51,571 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:20:51,573 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:20:51,574 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:20:51,578 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:20:51,579 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:20:51,581 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:20:51,582 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:20:51,587 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:20:51,588 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:20:51,594 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:20:51,596 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:20:51,600 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:20:51,601 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:20:52,210 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2020-07-21 01:20:52,214 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 8, 6, 7, 1] term [2020-07-21 01:20:52,231 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:20:52,301 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:20:52,302 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:52,361 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:52,392 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:52,535 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:20:52,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050604453] [2020-07-21 01:20:52,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:20:52,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2020-07-21 01:20:52,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215921437] [2020-07-21 01:20:52,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 01:20:52,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:20:52,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 01:20:52,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-07-21 01:20:52,540 INFO L87 Difference]: Start difference. First operand 203 states and 275 transitions. Second operand 25 states. [2020-07-21 01:20:53,528 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-21 01:20:54,043 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-07-21 01:20:54,333 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-07-21 01:20:54,801 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 01:20:55,035 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-07-21 01:20:55,476 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-07-21 01:20:57,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:20:57,509 INFO L93 Difference]: Finished difference Result 590 states and 879 transitions. [2020-07-21 01:20:57,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-21 01:20:57,510 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 129 [2020-07-21 01:20:57,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:20:57,516 INFO L225 Difference]: With dead ends: 590 [2020-07-21 01:20:57,517 INFO L226 Difference]: Without dead ends: 453 [2020-07-21 01:20:57,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 230 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=551, Invalid=1611, Unknown=0, NotChecked=0, Total=2162 [2020-07-21 01:20:57,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-07-21 01:20:57,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 417. [2020-07-21 01:20:57,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-21 01:20:57,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 549 transitions. [2020-07-21 01:20:57,565 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 549 transitions. Word has length 129 [2020-07-21 01:20:57,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:20:57,566 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 549 transitions. [2020-07-21 01:20:57,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 01:20:57,566 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 549 transitions. [2020-07-21 01:20:57,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-07-21 01:20:57,570 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:20:57,570 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:20:57,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:20:57,784 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:20:57,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:20:57,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1456847330, now seen corresponding path program 1 times [2020-07-21 01:20:57,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:20:57,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763317561] [2020-07-21 01:20:57,787 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 01:20:57,900 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:20:57,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:20:57,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:20:57,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:20:57,944 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:20:57,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:20:57,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763317561] [2020-07-21 01:20:57,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:20:57,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:20:57,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976429764] [2020-07-21 01:20:57,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:20:57,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:20:57,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:20:57,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:20:57,949 INFO L87 Difference]: Start difference. First operand 417 states and 549 transitions. Second operand 3 states. [2020-07-21 01:20:58,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:20:58,504 INFO L93 Difference]: Finished difference Result 1042 states and 1436 transitions. [2020-07-21 01:20:58,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:20:58,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-07-21 01:20:58,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:20:58,514 INFO L225 Difference]: With dead ends: 1042 [2020-07-21 01:20:58,514 INFO L226 Difference]: Without dead ends: 691 [2020-07-21 01:20:58,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:20:58,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-07-21 01:20:58,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2020-07-21 01:20:58,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-07-21 01:20:58,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 898 transitions. [2020-07-21 01:20:58,559 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 898 transitions. Word has length 132 [2020-07-21 01:20:58,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:20:58,560 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 898 transitions. [2020-07-21 01:20:58,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:20:58,560 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 898 transitions. [2020-07-21 01:20:58,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-07-21 01:20:58,566 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:20:58,566 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:20:58,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:20:58,781 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:20:58,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:20:58,782 INFO L82 PathProgramCache]: Analyzing trace with hash -590467853, now seen corresponding path program 1 times [2020-07-21 01:20:58,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:20:58,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374513264] [2020-07-21 01:20:58,784 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 01:20:58,887 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 01:20:58,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:20:58,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 01:20:58,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:20:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:20:58,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:20:59,019 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:20:59,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374513264] [2020-07-21 01:20:59,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:20:59,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 01:20:59,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98966220] [2020-07-21 01:20:59,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 01:20:59,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:20:59,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 01:20:59,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:20:59,023 INFO L87 Difference]: Start difference. First operand 691 states and 898 transitions. Second operand 6 states. [2020-07-21 01:20:59,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:20:59,807 INFO L93 Difference]: Finished difference Result 1620 states and 2190 transitions. [2020-07-21 01:20:59,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:20:59,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2020-07-21 01:20:59,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:20:59,815 INFO L225 Difference]: With dead ends: 1620 [2020-07-21 01:20:59,815 INFO L226 Difference]: Without dead ends: 995 [2020-07-21 01:20:59,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:20:59,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2020-07-21 01:20:59,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 973. [2020-07-21 01:20:59,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-07-21 01:20:59,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1268 transitions. [2020-07-21 01:20:59,860 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1268 transitions. Word has length 141 [2020-07-21 01:20:59,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:20:59,861 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 1268 transitions. [2020-07-21 01:20:59,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 01:20:59,861 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1268 transitions. [2020-07-21 01:20:59,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-07-21 01:20:59,866 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:20:59,866 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:21:00,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:21:00,082 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:21:00,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:21:00,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1382850431, now seen corresponding path program 1 times [2020-07-21 01:21:00,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:21:00,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669633796] [2020-07-21 01:21:00,084 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 01:21:00,185 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 01:21:00,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:21:00,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:21:00,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:21:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:21:00,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:21:00,447 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 01:21:00,517 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 01:21:00,517 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:21:00,518 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:21:00,519 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:00,520 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 2, 1] term [2020-07-21 01:21:00,521 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:00,522 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:21:00,523 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:00,524 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:21:00,525 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:00,525 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:00,526 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:00,634 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:21:00,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669633796] [2020-07-21 01:21:00,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:21:00,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:21:00,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012144729] [2020-07-21 01:21:00,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:21:00,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:21:00,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:21:00,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:21:00,637 INFO L87 Difference]: Start difference. First operand 973 states and 1268 transitions. Second operand 7 states. [2020-07-21 01:21:01,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:21:01,836 INFO L93 Difference]: Finished difference Result 2491 states and 3253 transitions. [2020-07-21 01:21:01,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:21:01,840 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-07-21 01:21:01,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:21:01,848 INFO L225 Difference]: With dead ends: 2491 [2020-07-21 01:21:01,848 INFO L226 Difference]: Without dead ends: 1304 [2020-07-21 01:21:01,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 01:21:01,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2020-07-21 01:21:01,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1241. [2020-07-21 01:21:01,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2020-07-21 01:21:01,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1468 transitions. [2020-07-21 01:21:01,900 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1468 transitions. Word has length 147 [2020-07-21 01:21:01,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:21:01,901 INFO L479 AbstractCegarLoop]: Abstraction has 1241 states and 1468 transitions. [2020-07-21 01:21:01,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:21:01,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1468 transitions. [2020-07-21 01:21:01,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-07-21 01:21:01,906 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:21:01,906 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:21:02,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:21:02,121 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:21:02,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:21:02,122 INFO L82 PathProgramCache]: Analyzing trace with hash 2050643098, now seen corresponding path program 1 times [2020-07-21 01:21:02,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:21:02,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674294166] [2020-07-21 01:21:02,124 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 01:21:02,229 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:21:02,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:21:02,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 71 conjunts are in the unsatisfiable core [2020-07-21 01:21:02,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:21:02,908 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:21:02,909 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-07-21 01:21:02,909 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 01:21:02,988 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:21:02,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:21:03,566 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-07-21 01:21:03,711 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-07-21 01:21:03,729 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 7 conjuncts [2020-07-21 01:21:03,734 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 6 conjuncts [2020-07-21 01:21:03,735 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:21:03,737 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 4 conjuncts [2020-07-21 01:21:03,739 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 3 conjuncts [2020-07-21 01:21:03,741 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:21:03,753 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:21:03,755 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:21:03,756 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:21:03,757 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:21:03,759 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:21:03,761 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:21:03,770 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:21:03,772 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:21:03,772 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:21:03,777 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:21:03,778 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:21:03,779 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:21:03,781 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:21:03,782 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:21:03,783 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:21:03,784 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:21:03,785 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:21:03,790 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:21:03,794 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:21:03,795 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:21:03,796 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:21:03,800 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:21:03,801 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:21:03,804 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:21:03,805 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:21:03,806 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:21:03,807 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:21:03,810 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:21:03,812 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:21:03,813 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:21:03,815 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:21:03,816 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:21:03,816 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:21:03,818 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:21:03,820 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:21:03,830 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:21:03,832 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:21:03,835 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:21:03,836 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:21:03,836 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:21:03,846 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:21:03,847 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:21:03,848 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:21:03,850 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:21:03,852 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:21:03,853 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:21:03,855 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:21:03,856 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:21:03,857 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:21:03,865 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:21:03,866 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:21:03,868 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:21:03,869 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:21:03,870 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 5 conjuncts [2020-07-21 01:21:03,871 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:21:03,872 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:21:03,873 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:21:03,874 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:21:03,875 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:21:03,876 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:21:03,877 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:21:03,878 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:21:03,879 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:21:03,881 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:21:03,886 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:21:03,888 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:21:03,890 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:21:03,891 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:21:03,892 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:21:04,759 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 38 [2020-07-21 01:21:04,761 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 8, 6, 1] term [2020-07-21 01:21:04,762 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:21:04,849 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:21:04,850 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 01:21:04,929 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 01:21:04,974 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 01:21:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:21:05,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674294166] [2020-07-21 01:21:05,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:21:05,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2020-07-21 01:21:05,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325024293] [2020-07-21 01:21:05,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 01:21:05,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:21:05,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 01:21:05,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-07-21 01:21:05,157 INFO L87 Difference]: Start difference. First operand 1241 states and 1468 transitions. Second operand 25 states. [2020-07-21 01:21:07,074 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-07-21 01:21:07,353 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-07-21 01:21:07,740 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-07-21 01:21:08,102 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-07-21 01:21:08,359 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-07-21 01:21:08,590 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-07-21 01:21:08,829 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-07-21 01:21:09,233 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-07-21 01:21:09,476 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-07-21 01:21:09,837 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-07-21 01:21:10,097 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2020-07-21 01:21:10,513 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-07-21 01:21:11,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:21:11,891 INFO L93 Difference]: Finished difference Result 2709 states and 3267 transitions. [2020-07-21 01:21:11,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-21 01:21:11,892 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 162 [2020-07-21 01:21:11,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:21:11,903 INFO L225 Difference]: With dead ends: 2709 [2020-07-21 01:21:11,903 INFO L226 Difference]: Without dead ends: 1500 [2020-07-21 01:21:11,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 298 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=651, Invalid=1899, Unknown=0, NotChecked=0, Total=2550 [2020-07-21 01:21:11,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2020-07-21 01:21:11,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1433. [2020-07-21 01:21:11,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1433 states. [2020-07-21 01:21:11,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1679 transitions. [2020-07-21 01:21:11,972 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1679 transitions. Word has length 162 [2020-07-21 01:21:11,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:21:11,973 INFO L479 AbstractCegarLoop]: Abstraction has 1433 states and 1679 transitions. [2020-07-21 01:21:11,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 01:21:11,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1679 transitions. [2020-07-21 01:21:11,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-07-21 01:21:11,979 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:21:11,979 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:21:12,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:21:12,193 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:21:12,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:21:12,194 INFO L82 PathProgramCache]: Analyzing trace with hash 57081525, now seen corresponding path program 1 times [2020-07-21 01:21:12,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:21:12,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869224187] [2020-07-21 01:21:12,195 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 01:21:12,305 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:21:12,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:21:12,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 60 conjunts are in the unsatisfiable core [2020-07-21 01:21:12,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:21:13,034 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:21:13,035 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:21:13,035 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 3, 1] term [2020-07-21 01:21:13,036 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 01:21:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:21:13,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:21:13,688 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-07-21 01:21:13,940 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-07-21 01:21:14,062 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2020-07-21 01:21:14,065 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 7 conjuncts [2020-07-21 01:21:14,066 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 6 conjuncts [2020-07-21 01:21:14,067 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 01:21:14,068 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 01:21:14,068 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:21:14,069 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 01:21:14,072 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 01:21:14,073 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 01:21:14,074 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 01:21:14,075 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 01:21:14,075 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 01:21:14,076 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 01:21:14,079 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 01:21:14,080 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 01:21:14,081 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 01:21:14,081 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 01:21:14,082 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 01:21:14,083 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 01:21:14,115 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 8, 6, 1] term [2020-07-21 01:21:14,116 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:21:14,158 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:21:14,159 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:21:14,160 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:21:14,240 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:21:14,324 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:21:14,325 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:14,388 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:14,416 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:21:14,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869224187] [2020-07-21 01:21:14,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:21:14,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 28 [2020-07-21 01:21:14,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452315201] [2020-07-21 01:21:14,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-21 01:21:14,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:21:14,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-21 01:21:14,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2020-07-21 01:21:14,862 INFO L87 Difference]: Start difference. First operand 1433 states and 1679 transitions. Second operand 28 states. [2020-07-21 01:21:15,005 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2020-07-21 01:21:19,130 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-07-21 01:21:19,353 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-07-21 01:21:22,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:21:22,149 INFO L93 Difference]: Finished difference Result 3134 states and 3941 transitions. [2020-07-21 01:21:22,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-07-21 01:21:22,150 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 179 [2020-07-21 01:21:22,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:21:22,161 INFO L225 Difference]: With dead ends: 3134 [2020-07-21 01:21:22,162 INFO L226 Difference]: Without dead ends: 1947 [2020-07-21 01:21:22,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 328 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=936, Invalid=2604, Unknown=0, NotChecked=0, Total=3540 [2020-07-21 01:21:22,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1947 states. [2020-07-21 01:21:22,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1947 to 1370. [2020-07-21 01:21:22,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1370 states. [2020-07-21 01:21:22,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1573 transitions. [2020-07-21 01:21:22,227 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1573 transitions. Word has length 179 [2020-07-21 01:21:22,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:21:22,228 INFO L479 AbstractCegarLoop]: Abstraction has 1370 states and 1573 transitions. [2020-07-21 01:21:22,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-21 01:21:22,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1573 transitions. [2020-07-21 01:21:22,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-07-21 01:21:22,233 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:21:22,234 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:21:22,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:21:22,448 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:21:22,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:21:22,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1301752406, now seen corresponding path program 1 times [2020-07-21 01:21:22,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:21:22,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173978991] [2020-07-21 01:21:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 01:21:22,566 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:21:22,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:21:22,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 01:21:22,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:21:22,619 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 01:21:22,622 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:21:22,679 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 137 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:21:22,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:21:22,894 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 01:21:22,945 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:22,946 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:22,946 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 01:21:22,946 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:22,947 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:21:22,947 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:22,948 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:22,948 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:22,949 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:22,993 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:21:23,048 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:23,069 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:23,132 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 124 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:21:23,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173978991] [2020-07-21 01:21:23,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:21:23,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-07-21 01:21:23,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732472332] [2020-07-21 01:21:23,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 01:21:23,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:21:23,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 01:21:23,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:21:23,134 INFO L87 Difference]: Start difference. First operand 1370 states and 1573 transitions. Second operand 12 states. [2020-07-21 01:21:25,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:21:25,253 INFO L93 Difference]: Finished difference Result 2853 states and 3389 transitions. [2020-07-21 01:21:25,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-21 01:21:25,255 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 210 [2020-07-21 01:21:25,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:21:25,264 INFO L225 Difference]: With dead ends: 2853 [2020-07-21 01:21:25,264 INFO L226 Difference]: Without dead ends: 1731 [2020-07-21 01:21:25,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 415 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2020-07-21 01:21:25,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2020-07-21 01:21:25,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1648. [2020-07-21 01:21:25,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1648 states. [2020-07-21 01:21:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 1902 transitions. [2020-07-21 01:21:25,321 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 1902 transitions. Word has length 210 [2020-07-21 01:21:25,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:21:25,321 INFO L479 AbstractCegarLoop]: Abstraction has 1648 states and 1902 transitions. [2020-07-21 01:21:25,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 01:21:25,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 1902 transitions. [2020-07-21 01:21:25,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-07-21 01:21:25,327 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:21:25,328 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:21:25,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:21:25,541 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:21:25,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:21:25,542 INFO L82 PathProgramCache]: Analyzing trace with hash 565688508, now seen corresponding path program 1 times [2020-07-21 01:21:25,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:21:25,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959929000] [2020-07-21 01:21:25,543 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 01:21:25,741 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:21:25,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:21:25,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:21:25,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:21:25,799 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-07-21 01:21:25,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:21:25,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959929000] [2020-07-21 01:21:25,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:21:25,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:21:25,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442714117] [2020-07-21 01:21:25,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:21:25,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:21:25,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:21:25,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:21:25,802 INFO L87 Difference]: Start difference. First operand 1648 states and 1902 transitions. Second operand 3 states. [2020-07-21 01:21:26,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:21:26,248 INFO L93 Difference]: Finished difference Result 2196 states and 2552 transitions. [2020-07-21 01:21:26,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:21:26,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2020-07-21 01:21:26,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:21:26,257 INFO L225 Difference]: With dead ends: 2196 [2020-07-21 01:21:26,258 INFO L226 Difference]: Without dead ends: 2194 [2020-07-21 01:21:26,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:21:26,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2194 states. [2020-07-21 01:21:26,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2194 to 1920. [2020-07-21 01:21:26,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-07-21 01:21:26,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2240 transitions. [2020-07-21 01:21:26,328 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2240 transitions. Word has length 211 [2020-07-21 01:21:26,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:21:26,329 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 2240 transitions. [2020-07-21 01:21:26,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:21:26,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2240 transitions. [2020-07-21 01:21:26,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-07-21 01:21:26,336 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:21:26,336 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:21:26,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:21:26,551 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:21:26,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:21:26,552 INFO L82 PathProgramCache]: Analyzing trace with hash 379150271, now seen corresponding path program 1 times [2020-07-21 01:21:26,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:21:26,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471828643] [2020-07-21 01:21:26,552 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 01:21:26,692 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:21:26,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:21:26,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:21:26,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:21:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-07-21 01:21:26,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:21:27,015 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-07-21 01:21:27,069 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:21:27,069 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:27,070 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:27,070 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:27,071 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 01:21:27,071 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:21:27,072 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:21:27,072 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:27,073 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:27,214 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-07-21 01:21:27,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471828643] [2020-07-21 01:21:27,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:21:27,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:21:27,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492648616] [2020-07-21 01:21:27,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:21:27,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:21:27,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:21:27,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:21:27,216 INFO L87 Difference]: Start difference. First operand 1920 states and 2240 transitions. Second operand 7 states. [2020-07-21 01:21:28,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:21:28,386 INFO L93 Difference]: Finished difference Result 4575 states and 5437 transitions. [2020-07-21 01:21:28,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:21:28,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-07-21 01:21:28,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:21:28,404 INFO L225 Difference]: With dead ends: 4575 [2020-07-21 01:21:28,404 INFO L226 Difference]: Without dead ends: 2903 [2020-07-21 01:21:28,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 456 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:21:28,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2020-07-21 01:21:28,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 2486. [2020-07-21 01:21:28,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2486 states. [2020-07-21 01:21:28,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 2845 transitions. [2020-07-21 01:21:28,504 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 2845 transitions. Word has length 229 [2020-07-21 01:21:28,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:21:28,504 INFO L479 AbstractCegarLoop]: Abstraction has 2486 states and 2845 transitions. [2020-07-21 01:21:28,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:21:28,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 2845 transitions. [2020-07-21 01:21:28,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-07-21 01:21:28,517 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:21:28,518 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:21:28,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:21:28,732 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:21:28,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:21:28,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1747340190, now seen corresponding path program 1 times [2020-07-21 01:21:28,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:21:28,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045711600] [2020-07-21 01:21:28,734 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 01:21:28,889 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:21:28,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:21:28,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 01:21:28,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:21:28,916 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 01:21:28,917 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:21:29,011 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-07-21 01:21:29,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:21:29,244 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 01:21:29,300 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:29,301 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:29,301 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:29,302 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:29,302 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:21:29,303 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:29,303 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:29,304 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:29,304 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:21:29,305 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:21:29,331 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:21:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-07-21 01:21:29,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045711600] [2020-07-21 01:21:29,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:21:29,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:21:29,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360317489] [2020-07-21 01:21:29,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:21:29,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:21:29,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:21:29,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:21:29,435 INFO L87 Difference]: Start difference. First operand 2486 states and 2845 transitions. Second operand 7 states. [2020-07-21 01:21:30,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:21:30,743 INFO L93 Difference]: Finished difference Result 5707 states and 6636 transitions. [2020-07-21 01:21:30,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:21:30,744 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-07-21 01:21:30,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:21:30,759 INFO L225 Difference]: With dead ends: 5707 [2020-07-21 01:21:30,759 INFO L226 Difference]: Without dead ends: 3469 [2020-07-21 01:21:30,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 498 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:21:30,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3469 states. [2020-07-21 01:21:30,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3469 to 3463. [2020-07-21 01:21:30,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3463 states. [2020-07-21 01:21:30,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 3948 transitions. [2020-07-21 01:21:30,854 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 3948 transitions. Word has length 250 [2020-07-21 01:21:30,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:21:30,855 INFO L479 AbstractCegarLoop]: Abstraction has 3463 states and 3948 transitions. [2020-07-21 01:21:30,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:21:30,855 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 3948 transitions. [2020-07-21 01:21:30,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-07-21 01:21:30,866 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:21:30,867 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:21:31,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:21:31,081 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:21:31,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:21:31,082 INFO L82 PathProgramCache]: Analyzing trace with hash -474457533, now seen corresponding path program 1 times [2020-07-21 01:21:31,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:21:31,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548696913] [2020-07-21 01:21:31,083 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 01:21:31,250 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:21:31,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:21:31,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:21:31,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:21:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:21:31,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:21:31,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548696913] [2020-07-21 01:21:31,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:21:31,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:21:31,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297459618] [2020-07-21 01:21:31,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:21:31,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:21:31,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:21:31,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:21:31,350 INFO L87 Difference]: Start difference. First operand 3463 states and 3948 transitions. Second operand 3 states. [2020-07-21 01:21:31,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:21:31,924 INFO L93 Difference]: Finished difference Result 5562 states and 6368 transitions. [2020-07-21 01:21:31,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:21:31,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 263 [2020-07-21 01:21:31,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:21:31,939 INFO L225 Difference]: With dead ends: 5562 [2020-07-21 01:21:31,939 INFO L226 Difference]: Without dead ends: 2347 [2020-07-21 01:21:31,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:21:31,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2020-07-21 01:21:32,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2347. [2020-07-21 01:21:32,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2347 states. [2020-07-21 01:21:32,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 2619 transitions. [2020-07-21 01:21:32,007 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 2619 transitions. Word has length 263 [2020-07-21 01:21:32,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:21:32,007 INFO L479 AbstractCegarLoop]: Abstraction has 2347 states and 2619 transitions. [2020-07-21 01:21:32,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:21:32,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 2619 transitions. [2020-07-21 01:21:32,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-21 01:21:32,018 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:21:32,018 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:21:32,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:21:32,232 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:21:32,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:21:32,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1556497788, now seen corresponding path program 1 times [2020-07-21 01:21:32,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:21:32,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920270027] [2020-07-21 01:21:32,234 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 01:21:32,450 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:21:32,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:21:32,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:21:32,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:21:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2020-07-21 01:21:32,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:21:32,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920270027] [2020-07-21 01:21:32,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:21:32,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:21:32,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838823330] [2020-07-21 01:21:32,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:21:32,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:21:32,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:21:32,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:21:32,514 INFO L87 Difference]: Start difference. First operand 2347 states and 2619 transitions. Second operand 3 states. [2020-07-21 01:21:33,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:21:33,005 INFO L93 Difference]: Finished difference Result 2756 states and 3069 transitions. [2020-07-21 01:21:33,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:21:33,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 333 [2020-07-21 01:21:33,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:21:33,011 INFO L225 Difference]: With dead ends: 2756 [2020-07-21 01:21:33,011 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:21:33,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:21:33,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:21:33,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:21:33,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:21:33,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:21:33,017 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 333 [2020-07-21 01:21:33,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:21:33,018 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:21:33,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:21:33,018 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:21:33,018 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:21:33,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:21:33,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:21:34,010 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 172 [2020-07-21 01:21:34,331 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 176 [2020-07-21 01:21:35,304 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 67 [2020-07-21 01:21:35,443 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2020-07-21 01:21:36,108 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 52 [2020-07-21 01:21:36,807 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 52 [2020-07-21 01:21:36,812 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:21:36,812 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (let ((.cse3 (= 15 ~a8~0)) (.cse0 (not (= 15 |old(~a8~0)|))) (.cse1 (< 0 |old(~a7~0)|)) (.cse2 (not (= 1 |old(~a21~0)|))) (.cse4 (not (= 8 ~a12~0)))) (and (<= ~a16~0 |old(~a16~0)|) (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (or (not (= 1 |old(~a20~0)|)) .cse0 .cse1 .cse2 .cse3 .cse4) (<= |old(~a8~0)| ~a8~0) (= ~a20~0 |old(~a20~0)|) (= ~a21~0 |old(~a21~0)|) (or (and .cse3 (= 5 ~a16~0)) (not (= 5 |old(~a16~0)|)) .cse0 .cse1 (< 0 |old(~a20~0)|) .cse2 .cse4))) [2020-07-21 01:21:36,812 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:21:36,813 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 01:21:36,813 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 01:21:36,813 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,813 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,813 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,814 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,814 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,814 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,814 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 01:21:36,814 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 01:21:36,814 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 01:21:36,814 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 01:21:36,814 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 01:21:36,814 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 01:21:36,814 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 01:21:36,815 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 01:21:36,815 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 01:21:36,815 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 01:21:36,815 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,815 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,815 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,815 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,815 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,815 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,816 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 01:21:36,816 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 01:21:36,816 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 01:21:36,816 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 01:21:36,816 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 01:21:36,816 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 01:21:36,816 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 01:21:36,816 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 01:21:36,816 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 01:21:36,816 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 01:21:36,816 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 01:21:36,817 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 521) no Hoare annotation was computed. [2020-07-21 01:21:36,817 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 01:21:36,817 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 01:21:36,817 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 01:21:36,817 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 01:21:36,817 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,817 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,817 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,817 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,817 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,817 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 01:21:36,818 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 01:21:36,818 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 01:21:36,818 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 01:21:36,818 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 01:21:36,818 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 01:21:36,818 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 01:21:36,818 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 01:21:36,818 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 01:21:36,818 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,818 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,818 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,818 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,819 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,819 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 01:21:36,819 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 01:21:36,819 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 01:21:36,819 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 01:21:36,819 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 01:21:36,819 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 01:21:36,819 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 01:21:36,819 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 01:21:36,820 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 01:21:36,820 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 01:21:36,820 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 01:21:36,820 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 01:21:36,820 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 01:21:36,820 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,820 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,820 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,820 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,821 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,821 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 01:21:36,821 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 01:21:36,821 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 01:21:36,821 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 01:21:36,821 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 01:21:36,821 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 01:21:36,821 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 01:21:36,821 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 01:21:36,822 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 01:21:36,822 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,822 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,822 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,822 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,822 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,822 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,822 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 01:21:36,823 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,823 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 01:21:36,823 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 01:21:36,823 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 01:21:36,823 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 01:21:36,823 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 01:21:36,823 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 01:21:36,823 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 01:21:36,824 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 01:21:36,824 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 01:21:36,824 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 01:21:36,824 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 01:21:36,824 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 01:21:36,824 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 01:21:36,824 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,824 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,824 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,825 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,825 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,825 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 01:21:36,825 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 01:21:36,825 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 01:21:36,825 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 01:21:36,825 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 01:21:36,825 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 01:21:36,826 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 01:21:36,826 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 01:21:36,826 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,826 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,826 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,826 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,826 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,826 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 01:21:36,826 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 01:21:36,827 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 01:21:36,827 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 01:21:36,827 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 01:21:36,827 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 01:21:36,827 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 01:21:36,827 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 01:21:36,827 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 01:21:36,827 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 01:21:36,828 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse7 (= ~a7~0 |old(~a7~0)|)) (.cse8 (= ~a17~0 |old(~a17~0)|)) (.cse9 (= ~a16~0 |old(~a16~0)|)) (.cse10 (= ~a8~0 |old(~a8~0)|)) (.cse11 (= ~a20~0 |old(~a20~0)|))) (let ((.cse2 (= ~a21~0 |old(~a21~0)|)) (.cse0 (not (= 1 |old(~a7~0)|))) (.cse6 (not (<= |old(~a16~0)| 4))) (.cse3 (not (<= |old(~a7~0)| 0))) (.cse4 (and .cse7 .cse8 .cse9 .cse10 (= 1 ~a21~0) .cse11)) (.cse1 (not (= 1 |old(~a21~0)|))) (.cse5 (not (= 8 ~a12~0)))) (and (or .cse0 .cse1 (and (= 1 ~a7~0) .cse2)) (or (not (<= 15 |old(~a8~0)|)) .cse3 .cse4 .cse1 .cse5) (or .cse3 .cse6 .cse1 (and .cse7 .cse8 .cse9 .cse10 .cse11 .cse2) .cse5) (or (and (<= ~a16~0 |old(~a16~0)|) .cse7 .cse8 (<= |old(~a8~0)| ~a8~0) .cse11 .cse2) (not (<= |old(~a21~0)| 0))) (or .cse0 .cse6 .cse1 (<= ~a16~0 4)) (or (not (<= 14 |old(~a8~0)|)) .cse3 .cse4 (not (< |old(~a16~0)| 6)) .cse1 .cse5) (or (not (= 1 |old(~a20~0)|)) .cse3 .cse4 .cse1 .cse5)))) [2020-07-21 01:21:36,828 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 01:21:36,828 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,828 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,828 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,828 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,829 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 01:21:36,829 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,829 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,829 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 01:21:36,829 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 01:21:36,829 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 01:21:36,829 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 01:21:36,829 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 01:21:36,829 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 01:21:36,829 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 01:21:36,830 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 01:21:36,830 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 01:21:36,830 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 01:21:36,830 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 01:21:36,830 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 01:21:36,830 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,830 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,830 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,830 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,831 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,831 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 01:21:36,831 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,831 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 01:21:36,831 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 01:21:36,831 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 01:21:36,831 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 01:21:36,831 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 01:21:36,831 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 01:21:36,832 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 01:21:36,832 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 01:21:36,832 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 01:21:36,832 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 01:21:36,832 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 01:21:36,832 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 01:21:36,832 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 01:21:36,832 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 01:21:36,832 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,832 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,833 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,833 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,833 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,833 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:21:36,833 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 01:21:36,833 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 01:21:36,833 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 01:21:36,833 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 01:21:36,833 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 01:21:36,834 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 01:21:36,834 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 01:21:36,834 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 01:21:36,834 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 01:21:36,834 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 01:21:36,834 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:21:36,834 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (= 1 ~a17~0) (= 1 ~a21~0) (= 1 ~a20~0) (= 15 ~a8~0) (= 5 ~a16~0) (= 8 ~a12~0)) [2020-07-21 01:21:36,834 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:21:36,835 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:21:36,835 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (not (= 1 |old(~a20~0)|)) (not (= 5 |old(~a16~0)|)) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (and (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (= ~a16~0 |old(~a16~0)|) (= ~a8~0 |old(~a8~0)|) (= 1 ~a21~0) (= ~a20~0 |old(~a20~0)|)) (not (= 1 |old(~a17~0)|)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))) [2020-07-21 01:21:36,835 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 01:21:36,835 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse0 (<= ~a7~0 0)) (.cse1 (= 1 ~a21~0)) (.cse2 (= 8 ~a12~0))) (or (not (= 5 |old(~a16~0)|)) (<= ~a21~0 0) (and .cse0 (<= 15 ~a8~0) .cse1 .cse2) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (= 1 |old(~a17~0)|)) (and .cse0 .cse1 (= 1 ~a20~0) .cse2) (and (< ~a16~0 6) .cse0 (<= 14 ~a8~0) .cse1) (not (= 1 |old(~a20~0)|)) (and .cse0 .cse1 (<= ~a16~0 4)) (and (= 1 ~a7~0) .cse1) (not (= 1 |old(~a21~0)|)) (not .cse2))) [2020-07-21 01:21:36,835 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 01:21:36,835 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 01:21:36,836 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse0 (<= ~a7~0 0)) (.cse1 (= 1 ~a21~0)) (.cse2 (= 8 ~a12~0))) (or (not (= 5 |old(~a16~0)|)) (<= ~a21~0 0) (and .cse0 (<= 15 ~a8~0) .cse1 .cse2) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (= 1 |old(~a17~0)|)) (and .cse0 .cse1 (= 1 ~a20~0) .cse2) (and (< ~a16~0 6) .cse0 (<= 14 ~a8~0) .cse1) (not (= 1 |old(~a20~0)|)) (and .cse0 .cse1 (<= ~a16~0 4)) (and (= 1 ~a7~0) .cse1) (not (= 1 |old(~a21~0)|)) (not .cse2))) [2020-07-21 01:21:36,836 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 01:21:36,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:21:36 BoogieIcfgContainer [2020-07-21 01:21:36,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:21:36,862 INFO L168 Benchmark]: Toolchain (without parser) took 52925.61 ms. Allocated memory was 137.9 MB in the beginning and 652.7 MB in the end (delta: 514.9 MB). Free memory was 101.4 MB in the beginning and 553.9 MB in the end (delta: -452.4 MB). Peak memory consumption was 538.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:21:36,863 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 01:21:36,863 INFO L168 Benchmark]: CACSL2BoogieTranslator took 802.23 ms. Allocated memory was 137.9 MB in the beginning and 205.0 MB in the end (delta: 67.1 MB). Free memory was 101.2 MB in the beginning and 171.7 MB in the end (delta: -70.5 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. [2020-07-21 01:21:36,864 INFO L168 Benchmark]: Boogie Preprocessor took 110.62 ms. Allocated memory is still 205.0 MB. Free memory was 171.7 MB in the beginning and 166.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-07-21 01:21:36,865 INFO L168 Benchmark]: RCFGBuilder took 1207.48 ms. Allocated memory was 205.0 MB in the beginning and 236.5 MB in the end (delta: 31.5 MB). Free memory was 166.7 MB in the beginning and 180.4 MB in the end (delta: -13.8 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:21:36,865 INFO L168 Benchmark]: TraceAbstraction took 50799.53 ms. Allocated memory was 236.5 MB in the beginning and 652.7 MB in the end (delta: 416.3 MB). Free memory was 180.4 MB in the beginning and 553.9 MB in the end (delta: -373.4 MB). Peak memory consumption was 519.2 MB. Max. memory is 7.1 GB. [2020-07-21 01:21:36,868 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 802.23 ms. Allocated memory was 137.9 MB in the beginning and 205.0 MB in the end (delta: 67.1 MB). Free memory was 101.2 MB in the beginning and 171.7 MB in the end (delta: -70.5 MB). Peak memory consumption was 37.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.62 ms. Allocated memory is still 205.0 MB. Free memory was 171.7 MB in the beginning and 166.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1207.48 ms. Allocated memory was 205.0 MB in the beginning and 236.5 MB in the end (delta: 31.5 MB). Free memory was 166.7 MB in the beginning and 180.4 MB in the end (delta: -13.8 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 50799.53 ms. Allocated memory was 236.5 MB in the beginning and 652.7 MB in the end (delta: 416.3 MB). Free memory was 180.4 MB in the beginning and 553.9 MB in the end (delta: -373.4 MB). Peak memory consumption was 519.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 521]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 583]: Loop Invariant Derived loop invariant: (((((((((((!(5 == \old(a16)) || a21 <= 0) || (((a7 <= 0 && 15 <= a8) && 1 == a21) && 8 == a12)) || !(15 == \old(a8))) || !(\old(a7) <= 0)) || !(1 == \old(a17))) || (((a7 <= 0 && 1 == a21) && 1 == a20) && 8 == a12)) || (((a16 < 6 && a7 <= 0) && 14 <= a8) && 1 == a21)) || !(1 == \old(a20))) || ((a7 <= 0 && 1 == a21) && a16 <= 4)) || (1 == a7 && 1 == a21)) || !(1 == \old(a21))) || !(8 == a12) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 47.1s, OverallIterations: 13, TraceHistogramMax: 6, AutomataDifference: 29.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 781 SDtfs, 7294 SDslu, 925 SDs, 0 SdLazy, 16773 SolverSat, 1912 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4079 GetRequests, 3835 SyntacticMatches, 14 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2474 ImplicationChecksByTransitivity, 15.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3463occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 13 MinimizatonAttempts, 1545 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 130 PreInvPairs, 178 NumberOfFragments, 524 HoareAnnotationTreeSize, 130 FomulaSimplifications, 72185 FormulaSimplificationTreeSizeReduction, 1.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 30738 FormulaSimplificationTreeSizeReductionInter, 2.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 11.9s InterpolantComputationTime, 2507 NumberOfCodeBlocks, 1873 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 3933 ConstructedInterpolants, 0 QuantifiedInterpolants, 7394427 SizeOfPredicates, 105 NumberOfNonLiveVariables, 5704 ConjunctsInSsa, 320 ConjunctsInUnsatCore, 21 InterpolantComputations, 5 PerfectInterpolantSequences, 2076/2289 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...