/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_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:49:50,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:49:50,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:49:50,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:49:50,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:49:50,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:49:50,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:49:50,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:49:50,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:49:50,705 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:49:50,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:49:50,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:49:50,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:49:50,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:49:50,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:49:50,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:49:50,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:49:50,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:49:50,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:49:50,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:49:50,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:49:50,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:49:50,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:49:50,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:49:50,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:49:50,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:49:50,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:49:50,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:49:50,732 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 22:49:50,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:49:50,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:49:50,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:49:50,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:49:50,748 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:49:50,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:49:50,748 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:49:50,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:49:50,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:49:50,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:49:50,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:49:50,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:49:50,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:49:50,750 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:49:50,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:49:50,750 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:49:50,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:49:50,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:49:50,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:49:50,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:49:50,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:49:50,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:49:50,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:49:50,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:49:50,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:49:50,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:49:50,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:50,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:49:50,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:49:50,753 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 22:49:51,026 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:49:51,044 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:49:51,047 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:49:51,049 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:49:51,049 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:49:51,050 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-07-21 22:49:51,124 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb71cffb2/ec23fbc61c6743c88b0be300b6eb0a0c/FLAGc0dbe038a [2020-07-21 22:49:51,722 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:49:51,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-07-21 22:49:51,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb71cffb2/ec23fbc61c6743c88b0be300b6eb0a0c/FLAGc0dbe038a [2020-07-21 22:49:52,001 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb71cffb2/ec23fbc61c6743c88b0be300b6eb0a0c [2020-07-21 22:49:52,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:49:52,014 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:49:52,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:49:52,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:49:52,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:49:52,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:49:52" (1/1) ... [2020-07-21 22:49:52,024 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aaa11c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:52, skipping insertion in model container [2020-07-21 22:49:52,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:49:52" (1/1) ... [2020-07-21 22:49:52,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:49:52,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:49:52,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:49:52,629 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:49:52,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:49:52,730 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:49:52,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:52 WrapperNode [2020-07-21 22:49:52,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:49:52,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:49:52,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:49:52,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:49:52,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:52" (1/1) ... [2020-07-21 22:49:52,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:52" (1/1) ... [2020-07-21 22:49:52,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:52" (1/1) ... [2020-07-21 22:49:52,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:52" (1/1) ... [2020-07-21 22:49:52,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:52" (1/1) ... [2020-07-21 22:49:52,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:52" (1/1) ... [2020-07-21 22:49:52,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:52" (1/1) ... [2020-07-21 22:49:52,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:49:52,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:49:52,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:49:52,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:49:52,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:52" (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 22:49:52,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:49:52,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:49:52,940 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 22:49:52,940 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:49:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 22:49:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:49:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:49:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 22:49:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:49:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:49:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:49:54,278 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:49:54,278 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 22:49:54,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:49:54 BoogieIcfgContainer [2020-07-21 22:49:54,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:49:54,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:49:54,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:49:54,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:49:54,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:49:52" (1/3) ... [2020-07-21 22:49:54,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57922f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:49:54, skipping insertion in model container [2020-07-21 22:49:54,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:49:52" (2/3) ... [2020-07-21 22:49:54,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57922f5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:49:54, skipping insertion in model container [2020-07-21 22:49:54,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:49:54" (3/3) ... [2020-07-21 22:49:54,300 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label10.c [2020-07-21 22:49:54,311 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:49:54,322 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:49:54,336 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:49:54,369 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:49:54,369 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:49:54,369 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:49:54,369 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:49:54,370 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:49:54,370 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:49:54,370 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:49:54,370 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:49:54,393 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 22:49:54,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-07-21 22:49:54,406 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:54,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:49:54,408 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:54,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:54,414 INFO L82 PathProgramCache]: Analyzing trace with hash 262180542, now seen corresponding path program 1 times [2020-07-21 22:49:54,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:54,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78362060] [2020-07-21 22:49:54,425 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 22:49:54,637 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:49:54,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:54,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-21 22:49:54,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:55,020 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-07-21 22:49:55,168 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2020-07-21 22:49:55,486 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 26 [2020-07-21 22:49:55,722 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 22:49:55,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:49:55,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78362060] [2020-07-21 22:49:55,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:49:55,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-21 22:49:55,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530660803] [2020-07-21 22:49:55,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 22:49:55,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:49:55,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 22:49:55,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 22:49:55,752 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 11 states. [2020-07-21 22:49:57,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:49:57,489 INFO L93 Difference]: Finished difference Result 472 states and 791 transitions. [2020-07-21 22:49:57,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:49:57,491 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 116 [2020-07-21 22:49:57,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:49:57,504 INFO L225 Difference]: With dead ends: 472 [2020-07-21 22:49:57,504 INFO L226 Difference]: Without dead ends: 203 [2020-07-21 22:49:57,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-07-21 22:49:57,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-21 22:49:57,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-07-21 22:49:57,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-21 22:49:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 275 transitions. [2020-07-21 22:49:57,571 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 275 transitions. Word has length 116 [2020-07-21 22:49:57,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:49:57,571 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 275 transitions. [2020-07-21 22:49:57,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 22:49:57,572 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 275 transitions. [2020-07-21 22:49:57,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-07-21 22:49:57,576 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:49:57,576 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:49:57,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:49:57,791 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:49:57,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:49:57,792 INFO L82 PathProgramCache]: Analyzing trace with hash -193007079, now seen corresponding path program 1 times [2020-07-21 22:49:57,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:49:57,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533730460] [2020-07-21 22:49:57,794 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 22:49:57,892 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:49:57,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:49:57,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-21 22:49:57,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:49:58,537 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:49:58,541 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-07-21 22:49:58,542 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 22:49:58,628 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 22:49:58,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:49:59,337 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-07-21 22:49:59,638 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 22:49:59,778 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 22:49:59,783 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 7 conjuncts [2020-07-21 22:49:59,785 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 6 conjuncts [2020-07-21 22:49:59,787 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 22:49:59,788 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 22:49:59,789 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:49:59,791 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 22:49:59,795 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 22:49:59,796 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 22:49:59,797 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:49:59,804 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:49:59,806 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:49:59,808 INFO L501 QuantifierPusher]: Distributing 14 disjuncts over 3 conjuncts [2020-07-21 22:49:59,809 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:49:59,810 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:49:59,811 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:49:59,815 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:49:59,816 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:49:59,818 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:49:59,819 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:49:59,820 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 22:49:59,821 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:49:59,827 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:49:59,828 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:49:59,831 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 22:49:59,831 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 22:50:00,447 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2020-07-21 22:50:00,452 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 8, 6, 7, 1] term [2020-07-21 22:50:00,452 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 22:50:00,512 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 22:50:00,513 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:00,560 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:00,593 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:00,814 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 22:50:00,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533730460] [2020-07-21 22:50:00,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:50:00,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2020-07-21 22:50:00,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296565764] [2020-07-21 22:50:00,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 22:50:00,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:00,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 22:50:00,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-07-21 22:50:00,830 INFO L87 Difference]: Start difference. First operand 203 states and 275 transitions. Second operand 25 states. [2020-07-21 22:50:01,927 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-21 22:50:02,462 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-07-21 22:50:02,763 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-07-21 22:50:03,231 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 22:50:03,480 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-07-21 22:50:03,903 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-07-21 22:50:06,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:06,287 INFO L93 Difference]: Finished difference Result 588 states and 878 transitions. [2020-07-21 22:50:06,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-21 22:50:06,287 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 124 [2020-07-21 22:50:06,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:06,294 INFO L225 Difference]: With dead ends: 588 [2020-07-21 22:50:06,294 INFO L226 Difference]: Without dead ends: 451 [2020-07-21 22:50:06,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 220 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=551, Invalid=1611, Unknown=0, NotChecked=0, Total=2162 [2020-07-21 22:50:06,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-07-21 22:50:06,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 417. [2020-07-21 22:50:06,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-21 22:50:06,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 548 transitions. [2020-07-21 22:50:06,348 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 548 transitions. Word has length 124 [2020-07-21 22:50:06,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:06,348 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 548 transitions. [2020-07-21 22:50:06,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 22:50:06,349 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 548 transitions. [2020-07-21 22:50:06,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-07-21 22:50:06,358 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:06,358 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:50:06,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:06,560 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:06,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:06,560 INFO L82 PathProgramCache]: Analyzing trace with hash 911823639, now seen corresponding path program 1 times [2020-07-21 22:50:06,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:06,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992218295] [2020-07-21 22:50:06,562 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 22:50:06,665 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:50:06,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:06,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:50:06,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:06,697 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 22:50:06,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:50:06,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992218295] [2020-07-21 22:50:06,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:50:06,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:50:06,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296256059] [2020-07-21 22:50:06,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:50:06,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:06,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:50:06,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:50:06,702 INFO L87 Difference]: Start difference. First operand 417 states and 548 transitions. Second operand 3 states. [2020-07-21 22:50:07,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:07,314 INFO L93 Difference]: Finished difference Result 1042 states and 1433 transitions. [2020-07-21 22:50:07,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:50:07,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-07-21 22:50:07,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:07,324 INFO L225 Difference]: With dead ends: 1042 [2020-07-21 22:50:07,324 INFO L226 Difference]: Without dead ends: 691 [2020-07-21 22:50:07,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 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 22:50:07,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-07-21 22:50:07,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2020-07-21 22:50:07,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-07-21 22:50:07,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 897 transitions. [2020-07-21 22:50:07,364 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 897 transitions. Word has length 127 [2020-07-21 22:50:07,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:07,365 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 897 transitions. [2020-07-21 22:50:07,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:50:07,365 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 897 transitions. [2020-07-21 22:50:07,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-21 22:50:07,369 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:07,369 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:50:07,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:07,580 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:07,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:07,581 INFO L82 PathProgramCache]: Analyzing trace with hash 371908886, now seen corresponding path program 1 times [2020-07-21 22:50:07,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:07,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179108768] [2020-07-21 22:50:07,582 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 22:50:07,671 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 22:50:07,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:07,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 22:50:07,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:50:07,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:50:07,964 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 22:50:08,015 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:08,016 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[4, 2, 1] term [2020-07-21 22:50:08,017 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:08,018 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:50:08,018 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:08,019 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:50:08,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179108768] [2020-07-21 22:50:08,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:50:08,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:50:08,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010191423] [2020-07-21 22:50:08,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:50:08,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:08,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:50:08,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:50:08,138 INFO L87 Difference]: Start difference. First operand 691 states and 897 transitions. Second operand 7 states. [2020-07-21 22:50:09,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:09,590 INFO L93 Difference]: Finished difference Result 1933 states and 2552 transitions. [2020-07-21 22:50:09,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 22:50:09,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-07-21 22:50:09,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:09,603 INFO L225 Difference]: With dead ends: 1933 [2020-07-21 22:50:09,604 INFO L226 Difference]: Without dead ends: 1169 [2020-07-21 22:50:09,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 280 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 22:50:09,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2020-07-21 22:50:09,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1106. [2020-07-21 22:50:09,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1106 states. [2020-07-21 22:50:09,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1302 transitions. [2020-07-21 22:50:09,671 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1302 transitions. Word has length 142 [2020-07-21 22:50:09,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:09,671 INFO L479 AbstractCegarLoop]: Abstraction has 1106 states and 1302 transitions. [2020-07-21 22:50:09,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:50:09,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1302 transitions. [2020-07-21 22:50:09,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-07-21 22:50:09,677 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:09,677 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 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] [2020-07-21 22:50:09,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:09,893 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:09,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:09,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1942488210, now seen corresponding path program 1 times [2020-07-21 22:50:09,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:09,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634419290] [2020-07-21 22:50:09,894 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 22:50:10,026 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:50:10,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:10,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 29 conjunts are in the unsatisfiable core [2020-07-21 22:50:10,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 22:50:10,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:50:10,305 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 22:50:10,349 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:10,350 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:10,351 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:50:10,352 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:10,352 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:10,353 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:50:10,353 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:10,589 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 22:50:10,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634419290] [2020-07-21 22:50:10,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 22:50:10,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2020-07-21 22:50:10,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913111628] [2020-07-21 22:50:10,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:50:10,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:10,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:50:10,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:50:10,591 INFO L87 Difference]: Start difference. First operand 1106 states and 1302 transitions. Second operand 5 states. [2020-07-21 22:50:11,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:11,453 INFO L93 Difference]: Finished difference Result 3121 states and 3747 transitions. [2020-07-21 22:50:11,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 22:50:11,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-07-21 22:50:11,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:11,468 INFO L225 Difference]: With dead ends: 3121 [2020-07-21 22:50:11,468 INFO L226 Difference]: Without dead ends: 1944 [2020-07-21 22:50:11,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 336 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-21 22:50:11,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2020-07-21 22:50:11,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1944. [2020-07-21 22:50:11,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1944 states. [2020-07-21 22:50:11,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 2224 transitions. [2020-07-21 22:50:11,536 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 2224 transitions. Word has length 172 [2020-07-21 22:50:11,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:11,536 INFO L479 AbstractCegarLoop]: Abstraction has 1944 states and 2224 transitions. [2020-07-21 22:50:11,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:50:11,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 2224 transitions. [2020-07-21 22:50:11,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-07-21 22:50:11,542 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:11,543 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-07-21 22:50:11,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:11,757 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:11,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:11,757 INFO L82 PathProgramCache]: Analyzing trace with hash 147261677, now seen corresponding path program 1 times [2020-07-21 22:50:11,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:11,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880516071] [2020-07-21 22:50:11,758 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 22:50:11,886 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:50:11,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:11,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 22:50:11,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:11,915 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 22:50:11,915 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:50:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 76 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 22:50:11,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:50:12,181 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 22:50:12,234 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:12,235 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:12,236 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 22:50:12,237 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:12,237 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:50:12,237 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:12,238 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:12,240 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:12,244 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:12,246 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:12,251 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:12,276 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:12,331 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:12,333 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 22:50:12,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880516071] [2020-07-21 22:50:12,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:50:12,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2020-07-21 22:50:12,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59317127] [2020-07-21 22:50:12,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 22:50:12,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:12,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 22:50:12,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-07-21 22:50:12,540 INFO L87 Difference]: Start difference. First operand 1944 states and 2224 transitions. Second operand 8 states. [2020-07-21 22:50:13,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:13,575 INFO L93 Difference]: Finished difference Result 4944 states and 5813 transitions. [2020-07-21 22:50:13,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 22:50:13,575 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 189 [2020-07-21 22:50:13,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:13,595 INFO L225 Difference]: With dead ends: 4944 [2020-07-21 22:50:13,596 INFO L226 Difference]: Without dead ends: 2927 [2020-07-21 22:50:13,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 371 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 22:50:13,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-07-21 22:50:13,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2639. [2020-07-21 22:50:13,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2639 states. [2020-07-21 22:50:13,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 3047 transitions. [2020-07-21 22:50:13,706 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 3047 transitions. Word has length 189 [2020-07-21 22:50:13,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:13,707 INFO L479 AbstractCegarLoop]: Abstraction has 2639 states and 3047 transitions. [2020-07-21 22:50:13,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 22:50:13,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 3047 transitions. [2020-07-21 22:50:13,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-07-21 22:50:13,718 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:13,719 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 22:50:13,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:13,933 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:13,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:13,934 INFO L82 PathProgramCache]: Analyzing trace with hash 592928131, now seen corresponding path program 1 times [2020-07-21 22:50:13,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:13,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958644189] [2020-07-21 22:50:13,935 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 22:50:14,052 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:50:14,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:14,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:50:14,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:14,149 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 22:50:14,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:50:14,245 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 141 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 22:50:14,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958644189] [2020-07-21 22:50:14,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:50:14,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:50:14,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148628429] [2020-07-21 22:50:14,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:50:14,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:14,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:50:14,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:50:14,247 INFO L87 Difference]: Start difference. First operand 2639 states and 3047 transitions. Second operand 7 states. [2020-07-21 22:50:15,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:15,370 INFO L93 Difference]: Finished difference Result 5623 states and 6534 transitions. [2020-07-21 22:50:15,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 22:50:15,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 223 [2020-07-21 22:50:15,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:15,388 INFO L225 Difference]: With dead ends: 5623 [2020-07-21 22:50:15,388 INFO L226 Difference]: Without dead ends: 3050 [2020-07-21 22:50:15,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 443 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-07-21 22:50:15,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3050 states. [2020-07-21 22:50:15,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3050 to 2093. [2020-07-21 22:50:15,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2093 states. [2020-07-21 22:50:15,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 2375 transitions. [2020-07-21 22:50:15,456 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 2375 transitions. Word has length 223 [2020-07-21 22:50:15,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:15,456 INFO L479 AbstractCegarLoop]: Abstraction has 2093 states and 2375 transitions. [2020-07-21 22:50:15,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:50:15,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 2375 transitions. [2020-07-21 22:50:15,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-07-21 22:50:15,463 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:15,464 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:50:15,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:15,678 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:15,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:15,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1739596393, now seen corresponding path program 1 times [2020-07-21 22:50:15,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:15,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922512575] [2020-07-21 22:50:15,680 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 22:50:15,808 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:50:15,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:15,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 22:50:15,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:15,835 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 22:50:15,836 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:50:15,914 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-07-21 22:50:15,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:50:16,118 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 22:50:16,165 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:16,166 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:16,167 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:16,167 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 22:50:16,168 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:16,170 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:16,171 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:16,172 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:16,173 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:50:16,205 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:50:16,316 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-07-21 22:50:16,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922512575] [2020-07-21 22:50:16,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:50:16,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 22:50:16,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584780192] [2020-07-21 22:50:16,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 22:50:16,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:16,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 22:50:16,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 22:50:16,319 INFO L87 Difference]: Start difference. First operand 2093 states and 2375 transitions. Second operand 7 states. [2020-07-21 22:50:17,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:17,596 INFO L93 Difference]: Finished difference Result 5097 states and 5828 transitions. [2020-07-21 22:50:17,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:50:17,597 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-07-21 22:50:17,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:17,609 INFO L225 Difference]: With dead ends: 5097 [2020-07-21 22:50:17,610 INFO L226 Difference]: Without dead ends: 3070 [2020-07-21 22:50:17,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 488 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 22:50:17,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3070 states. [2020-07-21 22:50:17,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3070 to 2929. [2020-07-21 22:50:17,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2929 states. [2020-07-21 22:50:17,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 3311 transitions. [2020-07-21 22:50:17,682 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 3311 transitions. Word has length 245 [2020-07-21 22:50:17,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:17,683 INFO L479 AbstractCegarLoop]: Abstraction has 2929 states and 3311 transitions. [2020-07-21 22:50:17,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 22:50:17,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 3311 transitions. [2020-07-21 22:50:17,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-07-21 22:50:17,693 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:50:17,693 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:50:17,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:17,907 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:50:17,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:50:17,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1478591534, now seen corresponding path program 1 times [2020-07-21 22:50:17,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:50:17,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716185869] [2020-07-21 22:50:17,908 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 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 22:50:18,068 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:50:18,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:50:18,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:50:18,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:50:18,139 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 22:50:18,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:50:18,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716185869] [2020-07-21 22:50:18,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:50:18,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 22:50:18,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010736666] [2020-07-21 22:50:18,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 22:50:18,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:50:18,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 22:50:18,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 22:50:18,144 INFO L87 Difference]: Start difference. First operand 2929 states and 3311 transitions. Second operand 3 states. [2020-07-21 22:50:18,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:50:18,634 INFO L93 Difference]: Finished difference Result 4676 states and 5322 transitions. [2020-07-21 22:50:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:50:18,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 258 [2020-07-21 22:50:18,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:50:18,639 INFO L225 Difference]: With dead ends: 4676 [2020-07-21 22:50:18,639 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 22:50:18,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 256 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 22:50:18,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 22:50:18,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 22:50:18,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 22:50:18,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 22:50:18,648 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 258 [2020-07-21 22:50:18,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:50:18,648 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 22:50:18,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 22:50:18,649 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 22:50:18,649 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 22:50:18,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:50:18,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 22:50:18,977 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2020-07-21 22:50:19,479 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 118 [2020-07-21 22:50:21,615 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 205 DAG size of output: 103 [2020-07-21 22:50:22,236 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 54 [2020-07-21 22:50:22,766 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 54 [2020-07-21 22:50:22,771 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:50:22,771 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) (let ((.cse2 (= 1 |old(~a20~0)|)) (.cse3 (= 1 |old(~a21~0)|))) (or (let ((.cse0 (= 1 ~a20~0)) (.cse1 (= 1 ~a21~0))) (and (or (not .cse0) .cse1) (or .cse0 (not .cse1)))) (and (not .cse2) .cse3) (and .cse2 (not .cse3)))) (<= |old(~a8~0)| ~a8~0) (= ~a21~0 |old(~a21~0)|)) [2020-07-21 22:50:22,772 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:50:22,772 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 22:50:22,772 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 22:50:22,772 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,772 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,772 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,773 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,773 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,773 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,773 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 22:50:22,773 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 22:50:22,773 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 22:50:22,773 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 22:50:22,774 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 22:50:22,774 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 22:50:22,774 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 22:50:22,774 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 22:50:22,774 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 22:50:22,774 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 22:50:22,774 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,774 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,774 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,774 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,774 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,775 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,775 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 22:50:22,775 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 22:50:22,775 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 22:50:22,775 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 22:50:22,775 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 22:50:22,775 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 22:50:22,775 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 22:50:22,775 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 22:50:22,775 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 22:50:22,776 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 22:50:22,776 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 22:50:22,776 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 506) no Hoare annotation was computed. [2020-07-21 22:50:22,776 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 22:50:22,776 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 22:50:22,776 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 22:50:22,776 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 22:50:22,776 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,777 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,777 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,777 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,777 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,777 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 22:50:22,777 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 22:50:22,777 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 22:50:22,777 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 22:50:22,777 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 22:50:22,778 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 22:50:22,778 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 22:50:22,778 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 22:50:22,778 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 22:50:22,778 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,778 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,778 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,778 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,778 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,779 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 22:50:22,779 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 22:50:22,779 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 22:50:22,779 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 22:50:22,780 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 22:50:22,780 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 22:50:22,780 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 22:50:22,780 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 22:50:22,780 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 22:50:22,780 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 22:50:22,780 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 22:50:22,780 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 22:50:22,781 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 22:50:22,781 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,781 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,781 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,781 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,781 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,781 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 22:50:22,781 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 22:50:22,782 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 22:50:22,782 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 22:50:22,782 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 22:50:22,782 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 22:50:22,782 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 22:50:22,782 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 22:50:22,782 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 22:50:22,782 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,782 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,782 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,782 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,782 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,783 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,783 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 22:50:22,783 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,783 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 22:50:22,783 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 22:50:22,783 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 22:50:22,783 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 22:50:22,783 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 22:50:22,783 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 22:50:22,783 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 22:50:22,783 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 22:50:22,783 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 22:50:22,783 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 22:50:22,784 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 22:50:22,784 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 22:50:22,784 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 22:50:22,784 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,784 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,784 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,784 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,784 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,785 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 22:50:22,785 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 22:50:22,785 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 22:50:22,785 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 22:50:22,785 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 22:50:22,785 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 22:50:22,785 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 22:50:22,785 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 22:50:22,785 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,786 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,786 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,786 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,786 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,786 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 22:50:22,786 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 22:50:22,786 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 22:50:22,786 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 22:50:22,786 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 22:50:22,786 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 22:50:22,787 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 22:50:22,787 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 22:50:22,787 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 22:50:22,787 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 22:50:22,787 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse25 (= 1 |old(~a21~0)|)) (.cse24 (= 1 |old(~a20~0)|))) (let ((.cse14 (= 1 ~a20~0)) (.cse13 (not .cse24)) (.cse7 (not .cse25)) (.cse11 (<= ~a16~0 |old(~a16~0)|)) (.cse12 (= ~a7~0 |old(~a7~0)|)) (.cse15 (= ~a17~0 |old(~a17~0)|)) (.cse16 (<= |old(~a16~0)| ~a16~0)) (.cse17 (<= |old(~a8~0)| ~a8~0)) (.cse20 (= ~a21~0 |old(~a21~0)|))) (let ((.cse9 (and .cse11 .cse12 .cse15 .cse16 .cse17 .cse20)) (.cse18 (= 1 ~a21~0)) (.cse0 (not (= 15 |old(~a8~0)|))) (.cse2 (not (<= |old(~a7~0)| 0))) (.cse4 (not (< 4 |old(~a16~0)|))) (.cse5 (not (= 1 |old(~a17~0)|))) (.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|)))) (.cse1 (= 15 ~a8~0)) (.cse8 (not (= 8 ~a12~0))) (.cse3 (not (<= |old(~a16~0)| 5))) (.cse22 (not (= 1 |old(~a7~0)|))) (.cse21 (and (or .cse13 .cse7) (or .cse24 .cse25))) (.cse23 (= 1 ~a7~0)) (.cse10 (not (<= |old(~a21~0)| 0))) (.cse19 (not .cse14))) (and (or .cse0 (and (<= ~a20~0 0) .cse1) .cse2 .cse3 .cse4 (not (<= |old(~a20~0)| 0)) .cse5 .cse6 .cse7 .cse8) (or .cse9 .cse10) (or .cse9 .cse2 (not (<= 6 |old(~a16~0)|)) .cse8) (or (and .cse11 .cse12 (or .cse13 .cse14) .cse15 .cse16 .cse17 .cse18) .cse2 .cse7 .cse8) (or (and .cse11 .cse12 .cse15 .cse17 (< 4 ~a16~0) (or .cse19 .cse18) .cse20) .cse2 .cse4 .cse21 .cse8) (or .cse0 .cse2 .cse3 .cse4 .cse5 .cse21 .cse6 .cse7 .cse1 .cse8) (or .cse22 (and .cse11 .cse23 .cse20) .cse3 .cse7) (or .cse22 .cse21 .cse7 (and .cse23 .cse14 .cse20)) (or .cse24 .cse10 .cse19))))) [2020-07-21 22:50:22,788 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 22:50:22,788 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,788 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,788 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,788 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,788 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 22:50:22,788 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,788 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,788 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 22:50:22,789 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 22:50:22,789 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 22:50:22,789 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 22:50:22,789 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 22:50:22,789 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 22:50:22,789 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 22:50:22,789 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 22:50:22,789 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 22:50:22,789 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 22:50:22,789 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 22:50:22,789 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 22:50:22,789 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,790 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,790 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,790 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,790 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,790 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 22:50:22,790 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,790 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 22:50:22,790 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 22:50:22,790 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 22:50:22,790 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 22:50:22,790 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 22:50:22,790 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 22:50:22,790 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 22:50:22,790 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 22:50:22,791 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 22:50:22,791 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 22:50:22,791 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 22:50:22,791 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 22:50:22,791 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 22:50:22,791 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 22:50:22,791 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,791 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,791 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,791 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,791 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,791 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 22:50:22,791 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 22:50:22,792 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 22:50:22,792 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 22:50:22,792 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 22:50:22,792 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 22:50:22,792 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 22:50:22,792 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 22:50:22,792 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 22:50:22,792 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 22:50:22,792 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 22:50:22,792 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 22:50:22,792 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 22:50:22,792 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 22:50:22,792 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 22:50:22,793 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)|)) (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)|)) (and (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (= 1 ~a21~0) (= 1 ~a20~0) (= 15 ~a8~0) (= 5 ~a16~0)) (not (= 8 ~a12~0))) [2020-07-21 22:50:22,793 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 22:50:22,793 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse2 (= 1 ~a21~0))) (let ((.cse0 (<= ~a7~0 0)) (.cse1 (let ((.cse4 (= 1 ~a20~0))) (or (and (not .cse4) (not .cse2)) (and .cse2 .cse4)))) (.cse3 (= 1 ~a7~0))) (or (and (<= 6 ~a16~0) .cse0) (<= ~a21~0 0) (and .cse0 (< 4 ~a16~0) .cse1) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (and .cse0 .cse2) (not (= 1 |old(~a20~0)|)) (not (<= |old(~a16~0)| 5)) (and .cse3 .cse2 .cse1) (and .cse3 (<= ~a16~0 5) .cse2) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))))) [2020-07-21 22:50:22,793 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 22:50:22,793 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 22:50:22,793 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse2 (= 1 ~a21~0))) (let ((.cse0 (<= ~a7~0 0)) (.cse1 (let ((.cse4 (= 1 ~a20~0))) (or (and (not .cse4) (not .cse2)) (and .cse2 .cse4)))) (.cse3 (= 1 ~a7~0))) (or (and (<= 6 ~a16~0) .cse0) (<= ~a21~0 0) (and .cse0 (< 4 ~a16~0) .cse1) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (and .cse0 .cse2) (not (= 1 |old(~a20~0)|)) (not (<= |old(~a16~0)| 5)) (and .cse3 .cse2 .cse1) (and .cse3 (<= ~a16~0 5) .cse2) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))))) [2020-07-21 22:50:22,793 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 22:50:22,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:50:22 BoogieIcfgContainer [2020-07-21 22:50:22,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:50:22,815 INFO L168 Benchmark]: Toolchain (without parser) took 30802.80 ms. Allocated memory was 138.9 MB in the beginning and 548.9 MB in the end (delta: 410.0 MB). Free memory was 101.7 MB in the beginning and 453.5 MB in the end (delta: -351.7 MB). Peak memory consumption was 428.8 MB. Max. memory is 7.1 GB. [2020-07-21 22:50:22,816 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 22:50:22,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 715.96 ms. Allocated memory was 138.9 MB in the beginning and 204.5 MB in the end (delta: 65.5 MB). Free memory was 101.3 MB in the beginning and 170.0 MB in the end (delta: -68.6 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. [2020-07-21 22:50:22,818 INFO L168 Benchmark]: Boogie Preprocessor took 125.25 ms. Allocated memory is still 204.5 MB. Free memory was 170.0 MB in the beginning and 165.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-07-21 22:50:22,818 INFO L168 Benchmark]: RCFGBuilder took 1430.65 ms. Allocated memory was 204.5 MB in the beginning and 238.0 MB in the end (delta: 33.6 MB). Free memory was 165.1 MB in the beginning and 180.5 MB in the end (delta: -15.5 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. [2020-07-21 22:50:22,819 INFO L168 Benchmark]: TraceAbstraction took 28523.68 ms. Allocated memory was 238.0 MB in the beginning and 548.9 MB in the end (delta: 310.9 MB). Free memory was 179.1 MB in the beginning and 453.5 MB in the end (delta: -274.4 MB). Peak memory consumption was 407.0 MB. Max. memory is 7.1 GB. [2020-07-21 22:50:22,823 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 715.96 ms. Allocated memory was 138.9 MB in the beginning and 204.5 MB in the end (delta: 65.5 MB). Free memory was 101.3 MB in the beginning and 170.0 MB in the end (delta: -68.6 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.25 ms. Allocated memory is still 204.5 MB. Free memory was 170.0 MB in the beginning and 165.1 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1430.65 ms. Allocated memory was 204.5 MB in the beginning and 238.0 MB in the end (delta: 33.6 MB). Free memory was 165.1 MB in the beginning and 180.5 MB in the end (delta: -15.5 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28523.68 ms. Allocated memory was 238.0 MB in the beginning and 548.9 MB in the end (delta: 310.9 MB). Free memory was 179.1 MB in the beginning and 453.5 MB in the end (delta: -274.4 MB). Peak memory consumption was 407.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 506]: 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: (((((((((((((6 <= a16 && a7 <= 0) || a21 <= 0) || ((a7 <= 0 && 4 < a16) && ((!(1 == a20) && !(1 == a21)) || (1 == a21 && 1 == a20)))) || !(15 == \old(a8))) || !(\old(a7) <= 0)) || !(4 < \old(a16))) || !(1 == \old(a17))) || (a7 <= 0 && 1 == a21)) || !(1 == \old(a20))) || !(\old(a16) <= 5)) || ((1 == a7 && 1 == a21) && ((!(1 == a20) && !(1 == a21)) || (1 == a21 && 1 == a20)))) || ((1 == a7 && a16 <= 5) && 1 == a21)) || !(1 == \old(a21))) || !(8 == a12) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.4s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 14.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 651 SDtfs, 3868 SDslu, 464 SDs, 0 SdLazy, 9447 SolverSat, 1056 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2739 GetRequests, 2625 SyntacticMatches, 10 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2929occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 1483 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 113 PreInvPairs, 147 NumberOfFragments, 708 HoareAnnotationTreeSize, 113 FomulaSimplifications, 2509 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 7 FomulaSimplificationsInter, 7310 FormulaSimplificationTreeSizeReductionInter, 3.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 1596 NumberOfCodeBlocks, 1081 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 2676 ConstructedInterpolants, 0 QuantifiedInterpolants, 3210107 SizeOfPredicates, 65 NumberOfNonLiveVariables, 3580 ConjunctsInSsa, 196 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 1340/1390 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...