/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_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:19:35,902 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 01:19:35,926 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:19:35,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:19:35,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:19:35,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:19:35,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:19:35,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:19:35,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:19:35,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:19:35,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:19:35,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:19:35,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:19:35,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:19:35,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:19:35,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:19:35,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:19:35,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:19:35,951 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 01:19:35,974 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:19:35,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:19:35,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:19:35,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:19:35,978 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:19:35,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:19:35,978 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:19:35,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:19:35,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:19:35,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:19:35,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:19:35,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:19:35,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:19:35,981 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:19:35,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:19:35,981 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:19:35,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:19:35,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:19:35,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:19:35,982 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:19:35,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:19:35,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:19:35,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:19:35,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:19:35,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:19:35,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:19:35,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:35,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:19:35,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:19:35,984 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 01:19:36,308 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:19:36,321 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:19:36,324 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:19:36,326 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:19:36,326 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:19:36,327 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-07-21 01:19:36,403 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354c128d8/2a40c3ba834e4165bad40ecaaf09330f/FLAGb856cccf6 [2020-07-21 01:19:37,012 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:19:37,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label26.c [2020-07-21 01:19:37,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354c128d8/2a40c3ba834e4165bad40ecaaf09330f/FLAGb856cccf6 [2020-07-21 01:19:37,286 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354c128d8/2a40c3ba834e4165bad40ecaaf09330f [2020-07-21 01:19:37,297 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:19:37,300 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:19:37,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:19:37,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:19:37,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:19:37,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:19:37" (1/1) ... [2020-07-21 01:19:37,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1340591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:37, skipping insertion in model container [2020-07-21 01:19:37,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:19:37" (1/1) ... [2020-07-21 01:19:37,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:19:37,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:19:37,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:19:37,814 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:19:38,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:19:38,115 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:19:38,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:38 WrapperNode [2020-07-21 01:19:38,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:19:38,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:19:38,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:19:38,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:19:38,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:38" (1/1) ... [2020-07-21 01:19:38,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:38" (1/1) ... [2020-07-21 01:19:38,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:38" (1/1) ... [2020-07-21 01:19:38,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:38" (1/1) ... [2020-07-21 01:19:38,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:38" (1/1) ... [2020-07-21 01:19:38,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:38" (1/1) ... [2020-07-21 01:19:38,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:38" (1/1) ... [2020-07-21 01:19:38,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:19:38,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:19:38,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:19:38,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:19:38,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:38" (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 01:19:38,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:19:38,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:19:38,289 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 01:19:38,289 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:19:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 01:19:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:19:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:19:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 01:19:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:19:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:19:38,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:19:39,450 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:19:39,451 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 01:19:39,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:19:39 BoogieIcfgContainer [2020-07-21 01:19:39,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:19:39,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:19:39,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:19:39,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:19:39,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:19:37" (1/3) ... [2020-07-21 01:19:39,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5170ccc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:19:39, skipping insertion in model container [2020-07-21 01:19:39,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:38" (2/3) ... [2020-07-21 01:19:39,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5170ccc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:19:39, skipping insertion in model container [2020-07-21 01:19:39,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:19:39" (3/3) ... [2020-07-21 01:19:39,466 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label26.c [2020-07-21 01:19:39,478 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:19:39,486 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:19:39,503 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:19:39,532 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:19:39,533 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:19:39,533 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:19:39,533 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:19:39,534 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:19:39,534 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:19:39,534 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:19:39,534 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:19:39,561 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 01:19:39,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-07-21 01:19:39,573 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:39,575 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] [2020-07-21 01:19:39,575 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:39,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:39,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1414431897, now seen corresponding path program 1 times [2020-07-21 01:19:39,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:39,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783731742] [2020-07-21 01:19:39,593 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 01:19:39,845 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:19:39,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:39,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-21 01:19:39,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:40,377 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2020-07-21 01:19:40,787 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 01:19:40,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:19:40,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783731742] [2020-07-21 01:19:40,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:19:40,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-21 01:19:40,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334567526] [2020-07-21 01:19:40,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 01:19:40,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:19:40,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 01:19:40,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:19:40,813 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 11 states. [2020-07-21 01:19:42,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:19:42,472 INFO L93 Difference]: Finished difference Result 472 states and 791 transitions. [2020-07-21 01:19:42,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:19:42,474 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 109 [2020-07-21 01:19:42,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:19:42,486 INFO L225 Difference]: With dead ends: 472 [2020-07-21 01:19:42,486 INFO L226 Difference]: Without dead ends: 203 [2020-07-21 01:19:42,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 99 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 01:19:42,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-21 01:19:42,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-07-21 01:19:42,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-21 01:19:42,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 275 transitions. [2020-07-21 01:19:42,550 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 275 transitions. Word has length 109 [2020-07-21 01:19:42,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:19:42,551 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 275 transitions. [2020-07-21 01:19:42,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 01:19:42,552 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 275 transitions. [2020-07-21 01:19:42,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-07-21 01:19:42,556 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:42,556 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] [2020-07-21 01:19:42,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:42,773 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:42,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:42,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1836472428, now seen corresponding path program 1 times [2020-07-21 01:19:42,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:42,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84732065] [2020-07-21 01:19:42,775 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 01:19:42,873 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:19:42,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:42,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-21 01:19:42,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:43,566 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:19:43,569 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-07-21 01:19:43,570 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 01:19:43,652 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 01:19:43,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:19:44,357 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-07-21 01:19:44,498 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 01:19:44,649 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 01:19:44,789 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 01:19:44,794 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 7 conjuncts [2020-07-21 01:19:44,796 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 6 conjuncts [2020-07-21 01:19:44,797 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 01:19:44,799 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 01:19:44,800 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:19:44,801 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 01:19:44,805 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 01:19:44,806 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 01:19:44,808 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:19:44,816 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:19:44,818 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:19:44,819 INFO L501 QuantifierPusher]: Distributing 14 disjuncts over 3 conjuncts [2020-07-21 01:19:44,821 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:19:44,822 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:19:44,822 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:19:44,826 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:19:44,827 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:19:44,829 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:19:44,830 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:19:44,832 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:19:44,833 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:19:44,839 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:19:44,840 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:19:44,842 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:19:44,843 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:19:45,429 WARN L193 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2020-07-21 01:19:45,434 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 8, 6, 7, 1] term [2020-07-21 01:19:45,434 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:19:45,525 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:19:45,526 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:45,584 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:45,614 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:45,787 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 01:19:45,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84732065] [2020-07-21 01:19:45,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:19:45,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2020-07-21 01:19:45,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593932300] [2020-07-21 01:19:45,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 01:19:45,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:19:45,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 01:19:45,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-07-21 01:19:45,792 INFO L87 Difference]: Start difference. First operand 203 states and 275 transitions. Second operand 25 states. [2020-07-21 01:19:46,828 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-21 01:19:47,575 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-07-21 01:19:48,040 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 01:19:48,267 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-07-21 01:19:48,692 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-07-21 01:19:51,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:19:51,310 INFO L93 Difference]: Finished difference Result 588 states and 878 transitions. [2020-07-21 01:19:51,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-21 01:19:51,312 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 117 [2020-07-21 01:19:51,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:19:51,319 INFO L225 Difference]: With dead ends: 588 [2020-07-21 01:19:51,319 INFO L226 Difference]: Without dead ends: 451 [2020-07-21 01:19:51,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 206 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=551, Invalid=1611, Unknown=0, NotChecked=0, Total=2162 [2020-07-21 01:19:51,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-07-21 01:19:51,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 417. [2020-07-21 01:19:51,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-21 01:19:51,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 548 transitions. [2020-07-21 01:19:51,366 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 548 transitions. Word has length 117 [2020-07-21 01:19:51,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:19:51,366 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 548 transitions. [2020-07-21 01:19:51,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 01:19:51,367 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 548 transitions. [2020-07-21 01:19:51,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-07-21 01:19:51,371 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:51,371 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] [2020-07-21 01:19:51,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:51,572 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:51,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:51,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1252784430, now seen corresponding path program 1 times [2020-07-21 01:19:51,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:51,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11437573] [2020-07-21 01:19:51,575 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 01:19:51,677 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:19:51,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:51,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:19:51,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:51,718 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 01:19:51,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:19:51,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11437573] [2020-07-21 01:19:51,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:19:51,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:19:51,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145381824] [2020-07-21 01:19:51,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:19:51,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:19:51,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:19:51,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:19:51,724 INFO L87 Difference]: Start difference. First operand 417 states and 548 transitions. Second operand 3 states. [2020-07-21 01:19:52,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:19:52,346 INFO L93 Difference]: Finished difference Result 1044 states and 1434 transitions. [2020-07-21 01:19:52,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:19:52,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2020-07-21 01:19:52,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:19:52,353 INFO L225 Difference]: With dead ends: 1044 [2020-07-21 01:19:52,353 INFO L226 Difference]: Without dead ends: 693 [2020-07-21 01:19:52,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 118 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 01:19:52,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2020-07-21 01:19:52,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2020-07-21 01:19:52,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-07-21 01:19:52,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 869 transitions. [2020-07-21 01:19:52,394 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 869 transitions. Word has length 120 [2020-07-21 01:19:52,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:19:52,395 INFO L479 AbstractCegarLoop]: Abstraction has 693 states and 869 transitions. [2020-07-21 01:19:52,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:19:52,395 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 869 transitions. [2020-07-21 01:19:52,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-07-21 01:19:52,402 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:52,402 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 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 01:19:52,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:52,616 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:52,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:52,617 INFO L82 PathProgramCache]: Analyzing trace with hash 696610123, now seen corresponding path program 1 times [2020-07-21 01:19:52,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:52,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421461725] [2020-07-21 01:19:52,618 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 01:19:52,716 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 01:19:52,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:52,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:19:52,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:52,764 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:19:52,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:19:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:19:52,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421461725] [2020-07-21 01:19:52,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:19:52,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:19:52,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746124495] [2020-07-21 01:19:52,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:19:52,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:19:52,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:19:52,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:19:52,837 INFO L87 Difference]: Start difference. First operand 693 states and 869 transitions. Second operand 7 states. [2020-07-21 01:19:54,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:19:54,279 INFO L93 Difference]: Finished difference Result 2372 states and 3098 transitions. [2020-07-21 01:19:54,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:19:54,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-07-21 01:19:54,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:19:54,291 INFO L225 Difference]: With dead ends: 2372 [2020-07-21 01:19:54,291 INFO L226 Difference]: Without dead ends: 1745 [2020-07-21 01:19:54,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:19:54,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2020-07-21 01:19:54,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1545. [2020-07-21 01:19:54,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1545 states. [2020-07-21 01:19:54,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 1983 transitions. [2020-07-21 01:19:54,361 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 1983 transitions. Word has length 140 [2020-07-21 01:19:54,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:19:54,362 INFO L479 AbstractCegarLoop]: Abstraction has 1545 states and 1983 transitions. [2020-07-21 01:19:54,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:19:54,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 1983 transitions. [2020-07-21 01:19:54,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-07-21 01:19:54,369 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:54,369 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2020-07-21 01:19:54,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:54,585 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:54,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:54,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1420721245, now seen corresponding path program 1 times [2020-07-21 01:19:54,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:54,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316278289] [2020-07-21 01:19:54,587 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 01:19:54,699 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:19:54,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:54,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 01:19:54,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:54,751 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:19:54,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:19:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:19:54,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316278289] [2020-07-21 01:19:54,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:19:54,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 01:19:54,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63049285] [2020-07-21 01:19:54,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 01:19:54,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:19:54,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 01:19:54,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:19:54,831 INFO L87 Difference]: Start difference. First operand 1545 states and 1983 transitions. Second operand 6 states. [2020-07-21 01:19:55,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:19:55,596 INFO L93 Difference]: Finished difference Result 3223 states and 4220 transitions. [2020-07-21 01:19:55,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:19:55,596 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-07-21 01:19:55,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:19:55,608 INFO L225 Difference]: With dead ends: 3223 [2020-07-21 01:19:55,609 INFO L226 Difference]: Without dead ends: 1744 [2020-07-21 01:19:55,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 286 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 01:19:55,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2020-07-21 01:19:55,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1565. [2020-07-21 01:19:55,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-07-21 01:19:55,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1928 transitions. [2020-07-21 01:19:55,686 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1928 transitions. Word has length 145 [2020-07-21 01:19:55,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:19:55,686 INFO L479 AbstractCegarLoop]: Abstraction has 1565 states and 1928 transitions. [2020-07-21 01:19:55,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 01:19:55,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1928 transitions. [2020-07-21 01:19:55,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-07-21 01:19:55,692 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:55,693 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-07-21 01:19:55,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:55,907 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:55,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:55,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1766643116, now seen corresponding path program 1 times [2020-07-21 01:19:55,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:55,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969842939] [2020-07-21 01:19:55,908 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 01:19:55,998 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 01:19:55,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:56,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:19:56,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:56,102 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 01:19:56,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:19:56,322 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-07-21 01:19:56,377 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:56,378 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:56,380 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:56,381 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:56,382 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:19:56,382 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:56,383 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[7, 2, 1] term [2020-07-21 01:19:56,383 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:56,493 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-21 01:19:56,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969842939] [2020-07-21 01:19:56,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:19:56,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:19:56,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938868862] [2020-07-21 01:19:56,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:19:56,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:19:56,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:19:56,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:19:56,496 INFO L87 Difference]: Start difference. First operand 1565 states and 1928 transitions. Second operand 7 states. [2020-07-21 01:19:57,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:19:57,649 INFO L93 Difference]: Finished difference Result 3804 states and 4698 transitions. [2020-07-21 01:19:57,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:19:57,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 155 [2020-07-21 01:19:57,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:19:57,662 INFO L225 Difference]: With dead ends: 3804 [2020-07-21 01:19:57,662 INFO L226 Difference]: Without dead ends: 2027 [2020-07-21 01:19:57,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 306 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 01:19:57,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2020-07-21 01:19:57,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1690. [2020-07-21 01:19:57,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-07-21 01:19:57,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 1959 transitions. [2020-07-21 01:19:57,724 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 1959 transitions. Word has length 155 [2020-07-21 01:19:57,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:19:57,724 INFO L479 AbstractCegarLoop]: Abstraction has 1690 states and 1959 transitions. [2020-07-21 01:19:57,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:19:57,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 1959 transitions. [2020-07-21 01:19:57,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-07-21 01:19:57,758 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:57,759 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:19:57,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:57,960 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:57,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:57,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1932641360, now seen corresponding path program 1 times [2020-07-21 01:19:57,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:57,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231887600] [2020-07-21 01:19:57,962 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 01:19:58,069 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:19:58,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:58,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:19:58,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:58,139 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 01:19:58,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:19:58,346 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-07-21 01:19:58,390 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:58,390 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:58,391 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:19:58,392 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:58,392 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:19:58,393 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:19:58,394 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:58,394 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:19:58,395 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:58,395 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-21 01:19:58,396 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:19:58,514 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 84 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 01:19:58,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231887600] [2020-07-21 01:19:58,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:19:58,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:19:58,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761502972] [2020-07-21 01:19:58,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:19:58,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:19:58,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:19:58,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:19:58,518 INFO L87 Difference]: Start difference. First operand 1690 states and 1959 transitions. Second operand 7 states. [2020-07-21 01:19:59,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:19:59,673 INFO L93 Difference]: Finished difference Result 4581 states and 5398 transitions. [2020-07-21 01:19:59,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:19:59,679 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-07-21 01:19:59,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:19:59,695 INFO L225 Difference]: With dead ends: 4581 [2020-07-21 01:19:59,695 INFO L226 Difference]: Without dead ends: 2812 [2020-07-21 01:19:59,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 368 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 01:19:59,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2812 states. [2020-07-21 01:19:59,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2812 to 1839. [2020-07-21 01:19:59,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1839 states. [2020-07-21 01:19:59,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2043 transitions. [2020-07-21 01:19:59,762 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2043 transitions. Word has length 185 [2020-07-21 01:19:59,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:19:59,763 INFO L479 AbstractCegarLoop]: Abstraction has 1839 states and 2043 transitions. [2020-07-21 01:19:59,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:19:59,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2043 transitions. [2020-07-21 01:19:59,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-07-21 01:19:59,770 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:59,771 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:19:59,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:59,985 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:59,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:59,986 INFO L82 PathProgramCache]: Analyzing trace with hash 634873, now seen corresponding path program 1 times [2020-07-21 01:19:59,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:59,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617690033] [2020-07-21 01:19:59,987 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 01:20:00,103 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:20:00,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:20:00,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 01:20:00,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:20:00,142 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 01:20:00,143 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:20:00,208 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-07-21 01:20:00,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:20:00,401 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 01:20:00,448 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:00,449 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:00,450 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:00,451 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:00,452 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:20:00,453 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:00,454 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[7, 2, 1] term [2020-07-21 01:20:00,454 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:00,485 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:20:00,561 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:00,565 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:20:00,744 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 108 proven. 47 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 01:20:00,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617690033] [2020-07-21 01:20:00,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:20:00,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2020-07-21 01:20:00,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850191727] [2020-07-21 01:20:00,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 01:20:00,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:20:00,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 01:20:00,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:20:00,749 INFO L87 Difference]: Start difference. First operand 1839 states and 2043 transitions. Second operand 8 states. [2020-07-21 01:20:01,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:20:01,744 INFO L93 Difference]: Finished difference Result 3759 states and 4234 transitions. [2020-07-21 01:20:01,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:20:01,748 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 207 [2020-07-21 01:20:01,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:20:01,761 INFO L225 Difference]: With dead ends: 3759 [2020-07-21 01:20:01,762 INFO L226 Difference]: Without dead ends: 1845 [2020-07-21 01:20:01,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 409 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:20:01,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2020-07-21 01:20:01,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1686. [2020-07-21 01:20:01,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1686 states. [2020-07-21 01:20:01,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 1876 transitions. [2020-07-21 01:20:01,839 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 1876 transitions. Word has length 207 [2020-07-21 01:20:01,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:20:01,840 INFO L479 AbstractCegarLoop]: Abstraction has 1686 states and 1876 transitions. [2020-07-21 01:20:01,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 01:20:01,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 1876 transitions. [2020-07-21 01:20:01,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-07-21 01:20:01,852 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:20:01,853 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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 01:20:02,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:20:02,068 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:20:02,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:20:02,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1128746401, now seen corresponding path program 1 times [2020-07-21 01:20:02,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:20:02,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611648589] [2020-07-21 01:20:02,069 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 01:20:02,187 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:20:02,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:20:02,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:20:02,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:20:02,239 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-07-21 01:20:02,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:20:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 162 proven. 33 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-07-21 01:20:02,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611648589] [2020-07-21 01:20:02,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:20:02,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:20:02,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804863170] [2020-07-21 01:20:02,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:20:02,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:20:02,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:20:02,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:20:02,351 INFO L87 Difference]: Start difference. First operand 1686 states and 1876 transitions. Second operand 7 states. [2020-07-21 01:20:03,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:20:03,471 INFO L93 Difference]: Finished difference Result 3445 states and 3852 transitions. [2020-07-21 01:20:03,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 01:20:03,471 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2020-07-21 01:20:03,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:20:03,479 INFO L225 Difference]: With dead ends: 3445 [2020-07-21 01:20:03,480 INFO L226 Difference]: Without dead ends: 1964 [2020-07-21 01:20:03,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 469 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:20:03,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2020-07-21 01:20:03,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1682. [2020-07-21 01:20:03,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2020-07-21 01:20:03,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 1836 transitions. [2020-07-21 01:20:03,522 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 1836 transitions. Word has length 236 [2020-07-21 01:20:03,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:20:03,523 INFO L479 AbstractCegarLoop]: Abstraction has 1682 states and 1836 transitions. [2020-07-21 01:20:03,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:20:03,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 1836 transitions. [2020-07-21 01:20:03,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-07-21 01:20:03,530 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:20:03,530 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-07-21 01:20:03,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:20:03,744 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:20:03,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:20:03,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1772776995, now seen corresponding path program 1 times [2020-07-21 01:20:03,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:20:03,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760387303] [2020-07-21 01:20:03,745 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 01:20:03,857 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:20:03,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:20:03,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:20:03,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:20:03,928 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-07-21 01:20:03,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:20:04,146 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-07-21 01:20:04,197 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:20:04,198 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:04,199 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 01:20:04,199 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:20:04,200 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:04,200 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:04,201 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:04,334 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 181 proven. 15 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-07-21 01:20:04,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760387303] [2020-07-21 01:20:04,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:20:04,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:20:04,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082638493] [2020-07-21 01:20:04,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:20:04,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:20:04,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:20:04,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:20:04,336 INFO L87 Difference]: Start difference. First operand 1682 states and 1836 transitions. Second operand 7 states. [2020-07-21 01:20:05,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:20:05,475 INFO L93 Difference]: Finished difference Result 4134 states and 4569 transitions. [2020-07-21 01:20:05,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:20:05,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-07-21 01:20:05,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:20:05,487 INFO L225 Difference]: With dead ends: 4134 [2020-07-21 01:20:05,487 INFO L226 Difference]: Without dead ends: 2518 [2020-07-21 01:20:05,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 524 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 01:20:05,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2020-07-21 01:20:05,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2512. [2020-07-21 01:20:05,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2512 states. [2020-07-21 01:20:05,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2512 states to 2512 states and 2764 transitions. [2020-07-21 01:20:05,545 INFO L78 Accepts]: Start accepts. Automaton has 2512 states and 2764 transitions. Word has length 263 [2020-07-21 01:20:05,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:20:05,545 INFO L479 AbstractCegarLoop]: Abstraction has 2512 states and 2764 transitions. [2020-07-21 01:20:05,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:20:05,546 INFO L276 IsEmpty]: Start isEmpty. Operand 2512 states and 2764 transitions. [2020-07-21 01:20:05,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-07-21 01:20:05,555 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:20:05,556 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, 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] [2020-07-21 01:20:05,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:20:05,769 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:20:05,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:20:05,770 INFO L82 PathProgramCache]: Analyzing trace with hash -2142104674, now seen corresponding path program 1 times [2020-07-21 01:20:05,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:20:05,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544949964] [2020-07-21 01:20:05,770 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 01:20:05,945 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:20:05,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:20:05,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 01:20:05,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:20:05,979 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 2, 1] term [2020-07-21 01:20:05,979 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:20:06,064 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 237 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:20:06,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:20:06,163 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:20:06,164 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:20:06,189 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:20:06,331 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 237 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:20:06,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544949964] [2020-07-21 01:20:06,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:20:06,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:20:06,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698920608] [2020-07-21 01:20:06,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:20:06,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:20:06,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:20:06,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:20:06,333 INFO L87 Difference]: Start difference. First operand 2512 states and 2764 transitions. Second operand 7 states. [2020-07-21 01:20:07,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:20:07,319 INFO L93 Difference]: Finished difference Result 4567 states and 5045 transitions. [2020-07-21 01:20:07,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 01:20:07,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 276 [2020-07-21 01:20:07,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:20:07,330 INFO L225 Difference]: With dead ends: 4567 [2020-07-21 01:20:07,331 INFO L226 Difference]: Without dead ends: 2540 [2020-07-21 01:20:07,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 548 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 01:20:07,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2020-07-21 01:20:07,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 2518. [2020-07-21 01:20:07,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2518 states. [2020-07-21 01:20:07,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 2747 transitions. [2020-07-21 01:20:07,392 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 2747 transitions. Word has length 276 [2020-07-21 01:20:07,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:20:07,392 INFO L479 AbstractCegarLoop]: Abstraction has 2518 states and 2747 transitions. [2020-07-21 01:20:07,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:20:07,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 2747 transitions. [2020-07-21 01:20:07,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-07-21 01:20:07,401 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:20:07,402 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, 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] [2020-07-21 01:20:07,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:20:07,617 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:20:07,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:20:07,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1164437318, now seen corresponding path program 1 times [2020-07-21 01:20:07,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:20:07,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506842484] [2020-07-21 01:20:07,618 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 01:20:07,812 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:20:07,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:20:07,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:20:07,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:20:07,939 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 297 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:20:07,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:20:08,063 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:20:08,063 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:08,237 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 297 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:20:08,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506842484] [2020-07-21 01:20:08,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:20:08,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:20:08,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623637049] [2020-07-21 01:20:08,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:20:08,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:20:08,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:20:08,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:20:08,240 INFO L87 Difference]: Start difference. First operand 2518 states and 2747 transitions. Second operand 7 states. [2020-07-21 01:20:09,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:20:09,600 INFO L93 Difference]: Finished difference Result 4974 states and 5427 transitions. [2020-07-21 01:20:09,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:20:09,600 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 296 [2020-07-21 01:20:09,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:20:09,601 INFO L225 Difference]: With dead ends: 4974 [2020-07-21 01:20:09,601 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:20:09,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 590 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:20:09,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:20:09,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:20:09,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:20:09,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:20:09,611 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 296 [2020-07-21 01:20:09,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:20:09,611 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:20:09,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:20:09,611 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:20:09,611 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:20:09,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:20:09,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:20:10,477 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 189 [2020-07-21 01:20:10,670 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 177 [2020-07-21 01:20:12,510 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 229 DAG size of output: 119 [2020-07-21 01:20:13,430 WARN L193 SmtUtils]: Spent 888.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 68 [2020-07-21 01:20:14,295 WARN L193 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 68 [2020-07-21 01:20:14,299 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:20:14,300 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a16~0 |old(~a16~0)|) (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (<= |old(~a16~0)| ~a16~0) (= ~a20~0 |old(~a20~0)|) (= ~a21~0 |old(~a21~0)|)) [2020-07-21 01:20:14,300 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:20:14,300 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 01:20:14,300 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 01:20:14,300 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,301 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,301 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,301 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,301 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,301 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,301 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 01:20:14,301 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 01:20:14,301 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 01:20:14,301 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 01:20:14,301 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 01:20:14,302 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 01:20:14,302 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 01:20:14,302 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 01:20:14,302 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 01:20:14,302 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 01:20:14,302 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,302 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,302 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,302 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,303 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,303 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,303 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 01:20:14,303 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 01:20:14,303 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 01:20:14,303 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 01:20:14,303 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 01:20:14,303 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 01:20:14,304 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 01:20:14,304 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 01:20:14,304 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 01:20:14,304 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 01:20:14,304 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 01:20:14,304 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 485) no Hoare annotation was computed. [2020-07-21 01:20:14,304 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 01:20:14,304 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 01:20:14,304 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 01:20:14,304 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 01:20:14,304 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,304 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,305 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,305 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,305 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,305 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 01:20:14,305 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 01:20:14,305 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 01:20:14,305 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 01:20:14,305 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 01:20:14,306 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 01:20:14,306 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 01:20:14,306 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 01:20:14,306 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 01:20:14,306 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,306 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,307 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,307 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,307 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,307 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 01:20:14,307 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 01:20:14,307 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 01:20:14,307 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 01:20:14,307 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 01:20:14,308 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 01:20:14,308 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 01:20:14,308 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 01:20:14,308 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 01:20:14,308 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 01:20:14,308 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 01:20:14,308 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 01:20:14,308 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 01:20:14,308 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,309 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,309 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,309 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,309 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,309 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 01:20:14,309 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 01:20:14,309 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 01:20:14,309 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 01:20:14,310 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 01:20:14,310 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 01:20:14,310 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 01:20:14,310 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 01:20:14,310 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 01:20:14,310 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,310 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,310 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,311 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,311 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,311 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,311 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 01:20:14,311 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,311 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 01:20:14,311 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 01:20:14,311 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 01:20:14,311 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 01:20:14,312 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 01:20:14,312 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 01:20:14,312 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 01:20:14,312 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 01:20:14,312 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 01:20:14,312 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 01:20:14,312 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 01:20:14,312 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 01:20:14,313 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 01:20:14,313 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,313 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,313 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,313 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,313 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,313 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 01:20:14,313 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 01:20:14,314 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 01:20:14,314 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 01:20:14,314 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 01:20:14,314 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 01:20:14,314 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 01:20:14,314 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 01:20:14,314 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,314 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,315 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,315 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,315 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,315 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 01:20:14,315 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 01:20:14,315 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 01:20:14,315 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 01:20:14,315 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 01:20:14,316 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 01:20:14,316 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 01:20:14,316 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 01:20:14,316 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 01:20:14,316 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 01:20:14,317 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse28 (= 8 ~a12~0)) (.cse10 (not (<= |old(~a8~0)| 13)))) (let ((.cse22 (= 1 |old(~a17~0)|)) (.cse25 (= 1 |old(~a21~0)|)) (.cse16 (<= ~a16~0 |old(~a16~0)|)) (.cse12 (<= ~a8~0 13)) (.cse21 (= 1 |old(~a20~0)|)) (.cse27 (or .cse10 (not (<= |old(~a16~0)| 4)))) (.cse2 (not (<= |old(~a7~0)| 0))) (.cse9 (not .cse28))) (let ((.cse20 (= 1 ~a7~0)) (.cse1 (not (= 15 |old(~a8~0)|))) (.cse6 (and (not (= 6 |calculate_output_#in~input|)) (not (= 1 |calculate_output_#in~input|)) (not (= 2 |calculate_output_#in~input|)) (not (= 4 |calculate_output_#in~input|)) (not (= 5 |calculate_output_#in~input|)) (not (= 3 |calculate_output_#in~input|)))) (.cse8 (= 15 ~a8~0)) (.cse19 (not (= 1 |old(~a7~0)|))) (.cse4 (not (< 4 |old(~a16~0)|))) (.cse24 (and .cse27 (or .cse2 .cse10 .cse9))) (.cse0 (not .cse21)) (.cse23 (or (and .cse12 (<= ~a7~0 0) .cse28) (and .cse16 .cse12 (<= ~a16~0 4)))) (.cse17 (= ~a17~0 |old(~a17~0)|)) (.cse7 (not .cse25)) (.cse3 (not (<= |old(~a16~0)| 5))) (.cse5 (not .cse22)) (.cse11 (= ~a7~0 |old(~a7~0)|)) (.cse18 (<= |old(~a16~0)| ~a16~0)) (.cse13 (= 1 ~a17~0)) (.cse14 (= ~a20~0 |old(~a20~0)|)) (.cse15 (= ~a21~0 |old(~a21~0)|)) (.cse26 (and (or .cse10 (not (<= 6 |old(~a16~0)|))) .cse27))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (or .cse0 .cse3 .cse10 .cse4 .cse5 (and .cse11 .cse12 .cse13 (<= ~a16~0 5) (< 4 ~a16~0) .cse14 .cse15)) (or (and .cse16 .cse11 .cse17 .cse18 .cse14 .cse15) .cse2 .cse7 .cse9) (or .cse19 .cse3 (and .cse16 .cse20 .cse17 .cse18 .cse14 .cse15) (and (or .cse0 .cse5) (or .cse21 .cse22)) .cse7) (or .cse19 (and .cse16 .cse20 (<= 5 ~a16~0) .cse15) (not (<= 5 |old(~a16~0)|)) .cse7) (or (not (= 5 |old(~a16~0)|)) .cse1 .cse2 (not (<= |old(~a20~0)| 0)) .cse5 .cse6 .cse7 .cse8 .cse9) (or (and .cse11 .cse14 .cse23 .cse15) .cse24 .cse3 .cse7) (or .cse19 .cse3 .cse4 .cse14 .cse7) (or .cse24 .cse0 (and .cse11 .cse23) .cse7) (or (and .cse16 .cse11 .cse12 .cse17 .cse18 .cse14 .cse15) (and (or .cse5 .cse7) (or .cse22 .cse25)) .cse26) (or .cse3 .cse5 (and .cse16 .cse11 .cse12 .cse18 .cse13 .cse14 .cse15) .cse26))))) [2020-07-21 01:20:14,317 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 01:20:14,317 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,317 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,317 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,317 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,317 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 01:20:14,317 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,318 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,318 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 01:20:14,318 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 01:20:14,318 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 01:20:14,318 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 01:20:14,318 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 01:20:14,318 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 01:20:14,318 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 01:20:14,319 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 01:20:14,319 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 01:20:14,319 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 01:20:14,319 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 01:20:14,319 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 01:20:14,319 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,319 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,319 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,320 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,320 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,320 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 01:20:14,320 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,320 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 01:20:14,320 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 01:20:14,320 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 01:20:14,320 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 01:20:14,320 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 01:20:14,321 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 01:20:14,321 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 01:20:14,321 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 01:20:14,321 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 01:20:14,321 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 01:20:14,321 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 01:20:14,321 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 01:20:14,321 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 01:20:14,321 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 01:20:14,321 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,322 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,322 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,322 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,322 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,322 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:14,322 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 01:20:14,322 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 01:20:14,322 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 01:20:14,322 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 01:20:14,323 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 01:20:14,323 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 01:20:14,323 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 01:20:14,323 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 01:20:14,323 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 01:20:14,323 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 01:20:14,323 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:20:14,323 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 01:20:14,323 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:20:14,324 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:20:14,324 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (not (= 1 |old(~a20~0)|)) (not (= 15 |old(~a8~0)|)) (and (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (= 1 ~a21~0) (= ~a20~0 |old(~a20~0)|) (= 15 ~a8~0) (= 5 ~a16~0)) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))) [2020-07-21 01:20:14,324 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 01:20:14,324 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse3 (= 1 ~a17~0))) (let ((.cse1 (not .cse3)) (.cse4 (<= ~a8~0 13)) (.cse7 (= 1 ~a20~0)) (.cse5 (= 1 ~a7~0)) (.cse6 (not (= 1 |old(~a7~0)|))) (.cse8 (<= ~a16~0 5)) (.cse0 (< 4 |old(~a16~0)|)) (.cse2 (= 1 ~a21~0))) (or (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not .cse0) (not (= 1 |old(~a17~0)|)) (and (or (and .cse1 (not .cse2)) (and .cse3 .cse2)) .cse4 (<= 6 ~a16~0)) (and .cse5 .cse6 (or (and (not .cse7) .cse1) (and .cse3 .cse7)) .cse8 .cse0 .cse2) (and .cse4 (<= ~a16~0 4)) (not (= 1 |old(~a20~0)|)) (and (<= ~a7~0 0) (= ~a21~0 |old(~a21~0)|)) (not (<= |old(~a16~0)| 5)) (and .cse4 .cse3 .cse8 .cse7) (and .cse5 .cse6 .cse8 .cse0 .cse2 (< 4 ~a16~0)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))))) [2020-07-21 01:20:14,324 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 01:20:14,324 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 01:20:14,325 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse3 (= 1 ~a17~0))) (let ((.cse1 (not .cse3)) (.cse4 (<= ~a8~0 13)) (.cse7 (= 1 ~a20~0)) (.cse5 (= 1 ~a7~0)) (.cse6 (not (= 1 |old(~a7~0)|))) (.cse8 (<= ~a16~0 5)) (.cse0 (< 4 |old(~a16~0)|)) (.cse2 (= 1 ~a21~0))) (or (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not .cse0) (not (= 1 |old(~a17~0)|)) (and (or (and .cse1 (not .cse2)) (and .cse3 .cse2)) .cse4 (<= 6 ~a16~0)) (and .cse5 .cse6 (or (and (not .cse7) .cse1) (and .cse3 .cse7)) .cse8 .cse0 .cse2) (and .cse4 (<= ~a16~0 4)) (not (= 1 |old(~a20~0)|)) (and (<= ~a7~0 0) (= ~a21~0 |old(~a21~0)|)) (not (<= |old(~a16~0)| 5)) (and .cse4 .cse3 .cse8 .cse7) (and .cse5 .cse6 .cse8 .cse0 .cse2 (< 4 ~a16~0)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))))) [2020-07-21 01:20:14,325 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 01:20:14,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:20:14 BoogieIcfgContainer [2020-07-21 01:20:14,347 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:20:14,349 INFO L168 Benchmark]: Toolchain (without parser) took 37050.97 ms. Allocated memory was 145.2 MB in the beginning and 601.9 MB in the end (delta: 456.7 MB). Free memory was 99.8 MB in the beginning and 248.2 MB in the end (delta: -148.5 MB). Peak memory consumption was 450.5 MB. Max. memory is 7.1 GB. [2020-07-21 01:20:14,350 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.2 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 01:20:14,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 815.68 ms. Allocated memory was 145.2 MB in the beginning and 205.0 MB in the end (delta: 59.8 MB). Free memory was 99.3 MB in the beginning and 171.1 MB in the end (delta: -71.8 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. [2020-07-21 01:20:14,351 INFO L168 Benchmark]: Boogie Preprocessor took 100.32 ms. Allocated memory is still 205.0 MB. Free memory was 171.1 MB in the beginning and 166.2 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-07-21 01:20:14,352 INFO L168 Benchmark]: RCFGBuilder took 1239.08 ms. Allocated memory was 205.0 MB in the beginning and 238.0 MB in the end (delta: 33.0 MB). Free memory was 166.2 MB in the beginning and 179.4 MB in the end (delta: -13.2 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:20:14,353 INFO L168 Benchmark]: TraceAbstraction took 34889.29 ms. Allocated memory was 238.0 MB in the beginning and 601.9 MB in the end (delta: 363.9 MB). Free memory was 179.4 MB in the beginning and 248.2 MB in the end (delta: -68.8 MB). Peak memory consumption was 437.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:20:14,356 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.2 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 815.68 ms. Allocated memory was 145.2 MB in the beginning and 205.0 MB in the end (delta: 59.8 MB). Free memory was 99.3 MB in the beginning and 171.1 MB in the end (delta: -71.8 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.32 ms. Allocated memory is still 205.0 MB. Free memory was 171.1 MB in the beginning and 166.2 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1239.08 ms. Allocated memory was 205.0 MB in the beginning and 238.0 MB in the end (delta: 33.0 MB). Free memory was 166.2 MB in the beginning and 179.4 MB in the end (delta: -13.2 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34889.29 ms. Allocated memory was 238.0 MB in the beginning and 601.9 MB in the end (delta: 363.9 MB). Free memory was 179.4 MB in the beginning and 248.2 MB in the end (delta: -68.8 MB). Peak memory consumption was 437.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 485]: 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: ((((((((((((!(15 == \old(a8)) || !(\old(a7) <= 0)) || !(4 < \old(a16))) || !(1 == \old(a17))) || ((((!(1 == a17) && !(1 == a21)) || (1 == a17 && 1 == a21)) && a8 <= 13) && 6 <= a16)) || (((((1 == a7 && !(1 == \old(a7))) && ((!(1 == a20) && !(1 == a17)) || (1 == a17 && 1 == a20))) && a16 <= 5) && 4 < \old(a16)) && 1 == a21)) || (a8 <= 13 && a16 <= 4)) || !(1 == \old(a20))) || (a7 <= 0 && a21 == \old(a21))) || !(\old(a16) <= 5)) || (((a8 <= 13 && 1 == a17) && a16 <= 5) && 1 == a20)) || (((((1 == a7 && !(1 == \old(a7))) && a16 <= 5) && 4 < \old(a16)) && 1 == a21) && 4 < a16)) || !(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: 30.2s, OverallIterations: 12, TraceHistogramMax: 6, AutomataDifference: 18.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 586 SDtfs, 6585 SDslu, 660 SDs, 0 SdLazy, 12775 SolverSat, 1478 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4350 GetRequests, 4198 SyntacticMatches, 12 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2518occurred 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: 0.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 2192 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 152 PreInvPairs, 204 NumberOfFragments, 888 HoareAnnotationTreeSize, 152 FomulaSimplifications, 18768 FormulaSimplificationTreeSizeReduction, 0.8s HoareSimplificationTime, 7 FomulaSimplificationsInter, 13463 FormulaSimplificationTreeSizeReductionInter, 3.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 2249 NumberOfCodeBlocks, 1319 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 4247 ConstructedInterpolants, 0 QuantifiedInterpolants, 4089655 SizeOfPredicates, 62 NumberOfNonLiveVariables, 4903 ConjunctsInSsa, 213 ConjunctsInUnsatCore, 22 InterpolantComputations, 2 PerfectInterpolantSequences, 3303/3462 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...