/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:09:28,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:09:28,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:09:28,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:09:28,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:09:28,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:09:28,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:09:28,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:09:28,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:09:28,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:09:28,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:09:28,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:09:28,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:09:28,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:09:28,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:09:28,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:09:28,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:09:28,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:09:28,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:09:28,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:09:28,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:09:28,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:09:28,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:09:28,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:09:28,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:09:28,745 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 [2020-07-20 14:09:28,778 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:09:28,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:09:28,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:09:28,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:09:28,780 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:09:28,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:09:28,780 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:09:28,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:09:28,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:09:28,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:09:28,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:09:28,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:09:28,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:09:28,782 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:09:28,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:09:28,782 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:09:28,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:09:28,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:09:28,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:09:28,783 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:09:28,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:09:28,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:09:28,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:09:28,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:09:28,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:09:28,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:09:28,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:28,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:09:28,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:09:28,785 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 14:09:29,095 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:09:29,111 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:09:29,114 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:09:29,115 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:09:29,116 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:09:29,116 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-07-20 14:09:29,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2283f50b1/02e7d55929b5403491d2759bc44d2d6c/FLAG48319db83 [2020-07-20 14:09:29,742 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:09:29,743 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label30.c [2020-07-20 14:09:29,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2283f50b1/02e7d55929b5403491d2759bc44d2d6c/FLAG48319db83 [2020-07-20 14:09:30,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2283f50b1/02e7d55929b5403491d2759bc44d2d6c [2020-07-20 14:09:30,032 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:09:30,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:09:30,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:09:30,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:09:30,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:09:30,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:09:30" (1/1) ... [2020-07-20 14:09:30,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ad3b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:30, skipping insertion in model container [2020-07-20 14:09:30,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:09:30" (1/1) ... [2020-07-20 14:09:30,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:09:30,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:09:30,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:09:30,594 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:09:30,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:09:30,761 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:09:30,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:30 WrapperNode [2020-07-20 14:09:30,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:09:30,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:09:30,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:09:30,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:09:30,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:30" (1/1) ... [2020-07-20 14:09:30,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:30" (1/1) ... [2020-07-20 14:09:30,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:30" (1/1) ... [2020-07-20 14:09:30,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:30" (1/1) ... [2020-07-20 14:09:30,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:30" (1/1) ... [2020-07-20 14:09:30,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:30" (1/1) ... [2020-07-20 14:09:30,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:30" (1/1) ... [2020-07-20 14:09:30,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:09:30,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:09:30,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:09:30,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:09:30,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:30" (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 [2020-07-20 14:09:30,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:09:30,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:09:30,964 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 14:09:30,964 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:09:30,964 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 14:09:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:09:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 14:09:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 14:09:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:09:30,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:09:30,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:09:32,228 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:09:32,228 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 14:09:32,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:09:32 BoogieIcfgContainer [2020-07-20 14:09:32,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:09:32,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:09:32,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:09:32,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:09:32,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:09:30" (1/3) ... [2020-07-20 14:09:32,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc3f62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:09:32, skipping insertion in model container [2020-07-20 14:09:32,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:09:30" (2/3) ... [2020-07-20 14:09:32,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc3f62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:09:32, skipping insertion in model container [2020-07-20 14:09:32,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:09:32" (3/3) ... [2020-07-20 14:09:32,243 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label30.c [2020-07-20 14:09:32,254 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:09:32,262 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:09:32,276 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:09:32,301 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:09:32,302 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:09:32,302 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:09:32,302 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:09:32,302 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:09:32,302 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:09:32,303 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:09:32,303 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:09:32,325 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-20 14:09:32,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-20 14:09:32,337 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:32,338 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] [2020-07-20 14:09:32,338 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:32,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:32,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1422134543, now seen corresponding path program 1 times [2020-07-20 14:09:32,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:32,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600742601] [2020-07-20 14:09:32,355 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 [2020-07-20 14:09:32,489 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:32,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:32,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:09:32,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:32,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:32,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:32,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600742601] [2020-07-20 14:09:32,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:32,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:09:32,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905427370] [2020-07-20 14:09:32,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:09:32,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:32,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:09:32,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:32,630 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-20 14:09:33,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:33,669 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-20 14:09:33,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:33,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-07-20 14:09:33,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:33,687 INFO L225 Difference]: With dead ends: 586 [2020-07-20 14:09:33,687 INFO L226 Difference]: Without dead ends: 294 [2020-07-20 14:09:33,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:33,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-20 14:09:33,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-20 14:09:33,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-20 14:09:33,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 426 transitions. [2020-07-20 14:09:33,768 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 426 transitions. Word has length 40 [2020-07-20 14:09:33,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:33,769 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 426 transitions. [2020-07-20 14:09:33,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:33,769 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 426 transitions. [2020-07-20 14:09:33,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-07-20 14:09:33,777 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:33,778 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:33,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:33,992 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:33,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:33,993 INFO L82 PathProgramCache]: Analyzing trace with hash -214474198, now seen corresponding path program 1 times [2020-07-20 14:09:33,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:33,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609224394] [2020-07-20 14:09:33,995 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 [2020-07-20 14:09:34,083 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:34,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:34,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:09:34,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:34,144 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:34,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:34,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609224394] [2020-07-20 14:09:34,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:34,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:09:34,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565804805] [2020-07-20 14:09:34,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:09:34,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:34,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:09:34,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:09:34,149 INFO L87 Difference]: Start difference. First operand 294 states and 426 transitions. Second operand 5 states. [2020-07-20 14:09:35,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:35,160 INFO L93 Difference]: Finished difference Result 890 states and 1316 transitions. [2020-07-20 14:09:35,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 14:09:35,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-07-20 14:09:35,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:35,169 INFO L225 Difference]: With dead ends: 890 [2020-07-20 14:09:35,169 INFO L226 Difference]: Without dead ends: 602 [2020-07-20 14:09:35,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:09:35,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-07-20 14:09:35,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 590. [2020-07-20 14:09:35,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-20 14:09:35,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 775 transitions. [2020-07-20 14:09:35,223 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 775 transitions. Word has length 114 [2020-07-20 14:09:35,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:35,223 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 775 transitions. [2020-07-20 14:09:35,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:09:35,224 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 775 transitions. [2020-07-20 14:09:35,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-07-20 14:09:35,226 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:35,227 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:35,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:35,441 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:35,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:35,441 INFO L82 PathProgramCache]: Analyzing trace with hash -958443539, now seen corresponding path program 1 times [2020-07-20 14:09:35,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:35,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099791696] [2020-07-20 14:09:35,442 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 [2020-07-20 14:09:35,548 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:35,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:35,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:35,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:35,579 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:35,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:35,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099791696] [2020-07-20 14:09:35,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:35,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:09:35,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482288654] [2020-07-20 14:09:35,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:09:35,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:35,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:09:35,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:35,582 INFO L87 Difference]: Start difference. First operand 590 states and 775 transitions. Second operand 3 states. [2020-07-20 14:09:36,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:36,288 INFO L93 Difference]: Finished difference Result 1462 states and 1992 transitions. [2020-07-20 14:09:36,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:36,294 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2020-07-20 14:09:36,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:36,300 INFO L225 Difference]: With dead ends: 1462 [2020-07-20 14:09:36,300 INFO L226 Difference]: Without dead ends: 878 [2020-07-20 14:09:36,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:36,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-07-20 14:09:36,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2020-07-20 14:09:36,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-07-20 14:09:36,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1157 transitions. [2020-07-20 14:09:36,347 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1157 transitions. Word has length 119 [2020-07-20 14:09:36,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:36,347 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1157 transitions. [2020-07-20 14:09:36,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:36,348 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1157 transitions. [2020-07-20 14:09:36,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-07-20 14:09:36,351 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:36,351 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:36,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:36,567 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:36,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:36,568 INFO L82 PathProgramCache]: Analyzing trace with hash -699001651, now seen corresponding path program 1 times [2020-07-20 14:09:36,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:36,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125315586] [2020-07-20 14:09:36,569 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 [2020-07-20 14:09:36,654 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:36,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:36,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:09:36,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:36,747 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:36,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:36,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125315586] [2020-07-20 14:09:36,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:36,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:09:36,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319678985] [2020-07-20 14:09:36,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:09:36,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:36,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:09:36,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:09:36,751 INFO L87 Difference]: Start difference. First operand 878 states and 1157 transitions. Second operand 5 states. [2020-07-20 14:09:37,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:37,676 INFO L93 Difference]: Finished difference Result 2370 states and 3201 transitions. [2020-07-20 14:09:37,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 14:09:37,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-07-20 14:09:37,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:37,692 INFO L225 Difference]: With dead ends: 2370 [2020-07-20 14:09:37,692 INFO L226 Difference]: Without dead ends: 1498 [2020-07-20 14:09:37,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:09:37,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2020-07-20 14:09:37,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1470. [2020-07-20 14:09:37,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1470 states. [2020-07-20 14:09:37,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1802 transitions. [2020-07-20 14:09:37,769 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1802 transitions. Word has length 135 [2020-07-20 14:09:37,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:37,771 INFO L479 AbstractCegarLoop]: Abstraction has 1470 states and 1802 transitions. [2020-07-20 14:09:37,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:09:37,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1802 transitions. [2020-07-20 14:09:37,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-07-20 14:09:37,783 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:37,783 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:37,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:37,997 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:37,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:37,998 INFO L82 PathProgramCache]: Analyzing trace with hash 179811486, now seen corresponding path program 1 times [2020-07-20 14:09:37,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:37,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059868438] [2020-07-20 14:09:37,999 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 [2020-07-20 14:09:38,105 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:38,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:38,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:38,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:38,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:38,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059868438] [2020-07-20 14:09:38,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:38,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:09:38,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790477277] [2020-07-20 14:09:38,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:09:38,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:38,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:09:38,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:38,151 INFO L87 Difference]: Start difference. First operand 1470 states and 1802 transitions. Second operand 3 states. [2020-07-20 14:09:38,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:38,816 INFO L93 Difference]: Finished difference Result 3226 states and 4023 transitions. [2020-07-20 14:09:38,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:38,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 136 [2020-07-20 14:09:38,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:38,836 INFO L225 Difference]: With dead ends: 3226 [2020-07-20 14:09:38,836 INFO L226 Difference]: Without dead ends: 1762 [2020-07-20 14:09:38,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:38,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2020-07-20 14:09:38,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1762. [2020-07-20 14:09:38,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1762 states. [2020-07-20 14:09:38,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2139 transitions. [2020-07-20 14:09:38,898 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2139 transitions. Word has length 136 [2020-07-20 14:09:38,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:38,898 INFO L479 AbstractCegarLoop]: Abstraction has 1762 states and 2139 transitions. [2020-07-20 14:09:38,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:38,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2139 transitions. [2020-07-20 14:09:38,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-07-20 14:09:38,906 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:38,907 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-07-20 14:09:39,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:39,117 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:39,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:39,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1615395942, now seen corresponding path program 1 times [2020-07-20 14:09:39,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:39,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353136756] [2020-07-20 14:09:39,120 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 [2020-07-20 14:09:39,227 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:39,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:39,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:39,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-07-20 14:09:39,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:39,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353136756] [2020-07-20 14:09:39,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:39,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:09:39,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862284718] [2020-07-20 14:09:39,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:09:39,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:39,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:09:39,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:39,326 INFO L87 Difference]: Start difference. First operand 1762 states and 2139 transitions. Second operand 3 states. [2020-07-20 14:09:39,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:39,940 INFO L93 Difference]: Finished difference Result 2775 states and 3419 transitions. [2020-07-20 14:09:39,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:39,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2020-07-20 14:09:39,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:39,962 INFO L225 Difference]: With dead ends: 2775 [2020-07-20 14:09:39,962 INFO L226 Difference]: Without dead ends: 2773 [2020-07-20 14:09:39,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:39,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2020-07-20 14:09:40,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2344. [2020-07-20 14:09:40,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2344 states. [2020-07-20 14:09:40,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 2927 transitions. [2020-07-20 14:09:40,032 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 2927 transitions. Word has length 207 [2020-07-20 14:09:40,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:40,033 INFO L479 AbstractCegarLoop]: Abstraction has 2344 states and 2927 transitions. [2020-07-20 14:09:40,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:40,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 2927 transitions. [2020-07-20 14:09:40,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-07-20 14:09:40,038 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:40,038 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-07-20 14:09:40,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:40,252 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:40,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:40,252 INFO L82 PathProgramCache]: Analyzing trace with hash -910777059, now seen corresponding path program 1 times [2020-07-20 14:09:40,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:40,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305265159] [2020-07-20 14:09:40,253 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 [2020-07-20 14:09:40,386 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:40,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:40,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:40,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:40,441 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:40,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:09:40,552 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:09:40,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305265159] [2020-07-20 14:09:40,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:09:40,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 14:09:40,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298245652] [2020-07-20 14:09:40,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:09:40,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:40,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:09:40,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:09:40,555 INFO L87 Difference]: Start difference. First operand 2344 states and 2927 transitions. Second operand 6 states. [2020-07-20 14:09:41,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:41,536 INFO L93 Difference]: Finished difference Result 5141 states and 6559 transitions. [2020-07-20 14:09:41,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 14:09:41,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 208 [2020-07-20 14:09:41,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:41,551 INFO L225 Difference]: With dead ends: 5141 [2020-07-20 14:09:41,552 INFO L226 Difference]: Without dead ends: 2803 [2020-07-20 14:09:41,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 410 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 14:09:41,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2020-07-20 14:09:41,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 2650. [2020-07-20 14:09:41,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2650 states. [2020-07-20 14:09:41,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 3339 transitions. [2020-07-20 14:09:41,631 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 3339 transitions. Word has length 208 [2020-07-20 14:09:41,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:41,632 INFO L479 AbstractCegarLoop]: Abstraction has 2650 states and 3339 transitions. [2020-07-20 14:09:41,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:09:41,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 3339 transitions. [2020-07-20 14:09:41,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-07-20 14:09:41,638 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:41,639 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-07-20 14:09:41,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:41,855 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:41,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:41,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1055956540, now seen corresponding path program 1 times [2020-07-20 14:09:41,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:41,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052427340] [2020-07-20 14:09:41,857 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 [2020-07-20 14:09:41,976 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:41,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:41,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 14:09:41,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:42,040 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-07-20 14:09:42,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:42,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052427340] [2020-07-20 14:09:42,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:42,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:09:42,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793957403] [2020-07-20 14:09:42,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:09:42,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:42,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:09:42,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:09:42,043 INFO L87 Difference]: Start difference. First operand 2650 states and 3339 transitions. Second operand 5 states. [2020-07-20 14:09:42,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:42,981 INFO L93 Difference]: Finished difference Result 5467 states and 6905 transitions. [2020-07-20 14:09:42,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 14:09:42,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-07-20 14:09:42,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:42,996 INFO L225 Difference]: With dead ends: 5467 [2020-07-20 14:09:42,996 INFO L226 Difference]: Without dead ends: 2823 [2020-07-20 14:09:43,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:09:43,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2020-07-20 14:09:43,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2380. [2020-07-20 14:09:43,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2380 states. [2020-07-20 14:09:43,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 2999 transitions. [2020-07-20 14:09:43,072 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 2999 transitions. Word has length 215 [2020-07-20 14:09:43,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:43,072 INFO L479 AbstractCegarLoop]: Abstraction has 2380 states and 2999 transitions. [2020-07-20 14:09:43,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:09:43,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 2999 transitions. [2020-07-20 14:09:43,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-07-20 14:09:43,080 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:43,080 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:43,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:43,294 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:43,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:43,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1034106012, now seen corresponding path program 1 times [2020-07-20 14:09:43,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:43,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927651691] [2020-07-20 14:09:43,296 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 [2020-07-20 14:09:43,435 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:43,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:43,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:43,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:43,495 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-07-20 14:09:43,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:09:43,661 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 173 proven. 72 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-07-20 14:09:43,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927651691] [2020-07-20 14:09:43,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:09:43,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 14:09:43,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881672985] [2020-07-20 14:09:43,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:09:43,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:43,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:09:43,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:09:43,663 INFO L87 Difference]: Start difference. First operand 2380 states and 2999 transitions. Second operand 6 states. [2020-07-20 14:09:44,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:44,765 INFO L93 Difference]: Finished difference Result 5374 states and 6899 transitions. [2020-07-20 14:09:44,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 14:09:44,772 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 264 [2020-07-20 14:09:44,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:44,784 INFO L225 Difference]: With dead ends: 5374 [2020-07-20 14:09:44,785 INFO L226 Difference]: Without dead ends: 2404 [2020-07-20 14:09:44,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 524 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 14:09:44,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2020-07-20 14:09:44,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 2219. [2020-07-20 14:09:44,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2219 states. [2020-07-20 14:09:44,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 2631 transitions. [2020-07-20 14:09:44,852 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 2631 transitions. Word has length 264 [2020-07-20 14:09:44,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:44,853 INFO L479 AbstractCegarLoop]: Abstraction has 2219 states and 2631 transitions. [2020-07-20 14:09:44,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:09:44,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 2631 transitions. [2020-07-20 14:09:44,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-07-20 14:09:44,859 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:44,860 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:45,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:45,094 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:45,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:45,095 INFO L82 PathProgramCache]: Analyzing trace with hash -878759303, now seen corresponding path program 1 times [2020-07-20 14:09:45,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:45,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331297333] [2020-07-20 14:09:45,096 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:45,235 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:45,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:45,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:45,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:45,263 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 14:09:45,264 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:09:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-07-20 14:09:45,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:09:45,409 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:09:45,411 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:09:45,414 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-20 14:09:45,414 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:09:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 171 proven. 77 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-07-20 14:09:45,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331297333] [2020-07-20 14:09:45,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:09:45,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 14:09:45,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162569177] [2020-07-20 14:09:45,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:09:45,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:45,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:09:45,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:09:45,593 INFO L87 Difference]: Start difference. First operand 2219 states and 2631 transitions. Second operand 6 states. [2020-07-20 14:09:46,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:46,621 INFO L93 Difference]: Finished difference Result 4319 states and 5219 transitions. [2020-07-20 14:09:46,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 14:09:46,625 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 285 [2020-07-20 14:09:46,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:46,634 INFO L225 Difference]: With dead ends: 4319 [2020-07-20 14:09:46,634 INFO L226 Difference]: Without dead ends: 2249 [2020-07-20 14:09:46,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 566 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 14:09:46,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2249 states. [2020-07-20 14:09:46,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2249 to 2076. [2020-07-20 14:09:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2076 states. [2020-07-20 14:09:46,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 2381 transitions. [2020-07-20 14:09:46,689 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 2381 transitions. Word has length 285 [2020-07-20 14:09:46,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:46,689 INFO L479 AbstractCegarLoop]: Abstraction has 2076 states and 2381 transitions. [2020-07-20 14:09:46,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:09:46,690 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 2381 transitions. [2020-07-20 14:09:46,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-07-20 14:09:46,698 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:46,698 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:09:46,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:46,913 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:46,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:46,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1828439900, now seen corresponding path program 1 times [2020-07-20 14:09:46,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:46,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652863364] [2020-07-20 14:09:46,915 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:47,056 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:47,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:47,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:09:47,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-07-20 14:09:47,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:09:47,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652863364] [2020-07-20 14:09:47,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:09:47,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:09:47,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922077403] [2020-07-20 14:09:47,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:09:47,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:09:47,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:09:47,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:47,131 INFO L87 Difference]: Start difference. First operand 2076 states and 2381 transitions. Second operand 3 states. [2020-07-20 14:09:47,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:09:47,683 INFO L93 Difference]: Finished difference Result 2223 states and 2531 transitions. [2020-07-20 14:09:47,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:09:47,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 300 [2020-07-20 14:09:47,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:09:47,693 INFO L225 Difference]: With dead ends: 2223 [2020-07-20 14:09:47,694 INFO L226 Difference]: Without dead ends: 2074 [2020-07-20 14:09:47,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:09:47,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2020-07-20 14:09:47,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 1929. [2020-07-20 14:09:47,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1929 states. [2020-07-20 14:09:47,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1929 states to 1929 states and 2199 transitions. [2020-07-20 14:09:47,737 INFO L78 Accepts]: Start accepts. Automaton has 1929 states and 2199 transitions. Word has length 300 [2020-07-20 14:09:47,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:09:47,737 INFO L479 AbstractCegarLoop]: Abstraction has 1929 states and 2199 transitions. [2020-07-20 14:09:47,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:09:47,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1929 states and 2199 transitions. [2020-07-20 14:09:47,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 14:09:47,745 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:09:47,745 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-07-20 14:09:47,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:47,959 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:09:47,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:09:47,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1060741542, now seen corresponding path program 1 times [2020-07-20 14:09:47,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:09:47,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049592090] [2020-07-20 14:09:47,961 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:09:48,107 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:09:48,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:09:48,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 14:09:48,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:09:48,131 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:09:48,133 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 14:09:48,133 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 14:09:48,137 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 14:09:48,137 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 14:09:48,138 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 14:09:48,140 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 14:09:48,142 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 14:10:03,057 WARN L193 SmtUtils]: Spent 14.87 s on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2020-07-20 14:10:03,091 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 14:10:03,200 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 14:10:03,201 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:10:03,201 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:10:03,228 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:10:03,230 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:10:03,384 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-07-20 14:10:03,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:10:03,509 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 14:10:03,510 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:10:03,513 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:10:03,513 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 14:10:03,544 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:10:03,545 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 14:10:03,724 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:10:03,729 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:10:03,730 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 14:10:03,731 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 14:10:03,733 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 14:10:03,734 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 14:10:03,735 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 14:10:03,736 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 14:10:03,739 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 14:10:03,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049592090] [2020-07-20 14:10:03,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 14:10:03,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-20 14:10:03,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965207415] [2020-07-20 14:10:03,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 14:10:03,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:10:03,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 14:10:03,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-20 14:10:03,871 INFO L87 Difference]: Start difference. First operand 1929 states and 2199 transitions. Second operand 8 states. [2020-07-20 14:10:17,650 WARN L193 SmtUtils]: Spent 12.10 s on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2020-07-20 14:13:26,859 WARN L193 SmtUtils]: Spent 21.73 s on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-07-20 14:13:41,159 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 29 [2020-07-20 14:13:47,597 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2020-07-20 14:14:45,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:14:45,886 INFO L93 Difference]: Finished difference Result 5042 states and 5884 transitions. [2020-07-20 14:14:45,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 14:14:45,892 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 330 [2020-07-20 14:14:45,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:14:45,904 INFO L225 Difference]: With dead ends: 5042 [2020-07-20 14:14:45,904 INFO L226 Difference]: Without dead ends: 3262 [2020-07-20 14:14:45,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 529 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 52.1s TimeCoverageRelationStatistics Valid=149, Invalid=312, Unknown=1, NotChecked=0, Total=462 [2020-07-20 14:14:45,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2020-07-20 14:14:46,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 2964. [2020-07-20 14:14:46,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2964 states. [2020-07-20 14:14:46,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2964 states to 2964 states and 3390 transitions. [2020-07-20 14:14:46,008 INFO L78 Accepts]: Start accepts. Automaton has 2964 states and 3390 transitions. Word has length 330 [2020-07-20 14:14:46,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:14:46,008 INFO L479 AbstractCegarLoop]: Abstraction has 2964 states and 3390 transitions. [2020-07-20 14:14:46,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 14:14:46,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2964 states and 3390 transitions. [2020-07-20 14:14:46,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-07-20 14:14:46,023 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:14:46,024 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-07-20 14:14:46,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:14:46,240 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:14:46,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:14:46,240 INFO L82 PathProgramCache]: Analyzing trace with hash -924465415, now seen corresponding path program 1 times [2020-07-20 14:14:46,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:14:46,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750990491] [2020-07-20 14:14:46,241 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:14:46,414 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:14:46,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:14:46,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 14:14:46,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:14:46,429 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:14:46,431 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 14:14:46,432 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 14:14:46,433 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 14:14:46,433 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 14:14:46,582 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 17 [2020-07-20 14:14:46,774 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-07-20 14:14:46,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:14:46,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750990491] [2020-07-20 14:14:46,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:14:46,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:14:46,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510656051] [2020-07-20 14:14:46,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:14:46,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:14:46,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:14:46,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:14:46,776 INFO L87 Difference]: Start difference. First operand 2964 states and 3390 transitions. Second operand 3 states. [2020-07-20 14:14:49,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:14:49,895 INFO L93 Difference]: Finished difference Result 6498 states and 7560 transitions. [2020-07-20 14:14:49,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:14:49,900 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 349 [2020-07-20 14:14:49,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:14:49,901 INFO L225 Difference]: With dead ends: 6498 [2020-07-20 14:14:49,901 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 14:14:49,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:14:49,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 14:14:49,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 14:14:49,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 14:14:49,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 14:14:49,914 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 349 [2020-07-20 14:14:49,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:14:49,915 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 14:14:49,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:14:49,915 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 14:14:49,915 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 14:14:50,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:14:50,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 14:14:50,841 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 153 [2020-07-20 14:14:50,996 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 153 [2020-07-20 14:14:51,293 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 24 [2020-07-20 14:14:54,261 WARN L193 SmtUtils]: Spent 2.96 s on a formula simplification. DAG size of input: 197 DAG size of output: 75 [2020-07-20 14:14:55,651 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 161 DAG size of output: 44 [2020-07-20 14:14:56,976 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 161 DAG size of output: 44 [2020-07-20 14:14:56,980 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:14:56,981 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|)) [2020-07-20 14:14:56,981 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:14:56,981 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-20 14:14:56,981 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,981 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,981 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,981 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,981 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,981 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,981 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-20 14:14:56,981 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-20 14:14:56,982 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-20 14:14:56,982 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-20 14:14:56,982 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-20 14:14:56,982 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-20 14:14:56,982 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-20 14:14:56,982 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-20 14:14:56,983 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-20 14:14:56,983 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-20 14:14:56,983 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-20 14:14:56,983 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,983 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,984 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,984 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,984 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,984 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-20 14:14:56,984 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-20 14:14:56,984 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-20 14:14:56,984 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-20 14:14:56,984 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-20 14:14:56,984 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-20 14:14:56,985 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-20 14:14:56,985 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-20 14:14:56,985 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-20 14:14:56,985 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-20 14:14:56,985 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-20 14:14:56,985 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-20 14:14:56,985 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-20 14:14:56,985 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 106) no Hoare annotation was computed. [2020-07-20 14:14:56,985 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-20 14:14:56,985 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,986 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,986 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,986 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,986 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,986 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-20 14:14:56,986 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-20 14:14:56,986 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-20 14:14:56,986 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-20 14:14:56,986 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-20 14:14:56,987 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-20 14:14:56,987 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-20 14:14:56,987 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-20 14:14:56,987 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-20 14:14:56,987 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-20 14:14:56,987 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,987 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,987 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,987 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,988 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,988 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-20 14:14:56,988 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-20 14:14:56,988 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-20 14:14:56,988 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-20 14:14:56,988 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-20 14:14:56,988 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-20 14:14:56,988 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-20 14:14:56,988 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-20 14:14:56,989 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-20 14:14:56,989 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-20 14:14:56,989 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-20 14:14:56,989 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-20 14:14:56,989 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-20 14:14:56,989 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,989 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,989 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,989 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,990 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,990 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-20 14:14:56,990 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-20 14:14:56,990 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-20 14:14:56,990 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-20 14:14:56,990 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-20 14:14:56,990 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-20 14:14:56,990 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-20 14:14:56,991 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-20 14:14:56,991 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-20 14:14:56,991 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,991 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,991 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,991 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,991 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,991 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,991 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,991 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-20 14:14:56,991 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-20 14:14:56,991 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-20 14:14:56,991 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-20 14:14:56,992 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-20 14:14:56,992 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-20 14:14:56,992 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-20 14:14:56,992 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-20 14:14:56,992 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-20 14:14:56,992 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-20 14:14:56,992 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-20 14:14:56,992 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-20 14:14:56,992 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-20 14:14:56,992 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,992 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,993 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,993 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,993 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-20 14:14:56,993 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,993 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,993 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-20 14:14:56,993 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-20 14:14:56,993 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-20 14:14:56,993 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-20 14:14:56,994 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-20 14:14:56,994 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-20 14:14:56,994 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-20 14:14:56,994 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-20 14:14:56,994 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-20 14:14:56,994 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-20 14:14:56,994 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-20 14:14:56,994 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-20 14:14:56,994 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-20 14:14:56,994 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,994 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,994 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,994 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,994 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,995 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,995 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-20 14:14:56,995 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-20 14:14:56,995 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-20 14:14:56,995 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-20 14:14:56,995 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-20 14:14:56,995 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-20 14:14:56,995 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-20 14:14:56,995 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-20 14:14:56,996 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-20 14:14:56,996 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-20 14:14:56,996 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-20 14:14:56,996 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse13 (<= 8 ~a19~0)) (.cse1 (<= ~a10~0 |old(~a10~0)|)) (.cse7 (<= |old(~a10~0)| ~a10~0)) (.cse2 (<= ~a19~0 |old(~a19~0)|)) (.cse3 (= ~a1~0 |old(~a1~0)|))) (let ((.cse5 (not (<= 9 |old(~a19~0)|))) (.cse6 (and (<= 9 ~a19~0) .cse1 .cse7 .cse2 .cse3)) (.cse0 (not (<= |old(~a19~0)| 9))) (.cse4 (not (<= |old(~a10~0)| 1))) (.cse11 (and .cse13 .cse7)) (.cse8 (not (<= |old(~a19~0)| 8))) (.cse12 (not (<= 8 |old(~a19~0)|))) (.cse9 (not (<= 2 |old(~a10~0)|)))) (and (or .cse0 (and .cse1 .cse2 .cse3) .cse4) (or (not (<= 4 |old(~a10~0)|)) (and .cse1 .cse2 (<= 4 ~a10~0) .cse3) .cse0) (or .cse5 .cse6 .cse4) (or .cse5 .cse0 .cse6) (or (and .cse1 .cse7 .cse2 .cse3) .cse8 .cse9 (forall ((v_~a1~0_415 Int)) (let ((.cse10 (mod (+ v_~a1~0_415 39) 89))) (or (not (< 38 v_~a1~0_415)) (not (<= v_~a1~0_415 218)) (not (<= |old(~a1~0)| (+ .cse10 206))) (not (= 0 .cse10)))))) (or (not (<= 23 |old(~a1~0)|)) .cse11 .cse12 .cse0 .cse4) (or .cse11 (not (<= |old(~a10~0)| 0)) .cse12) (or .cse8 (and .cse1 .cse13 .cse7 .cse2 .cse3) .cse12 .cse9)))) [2020-07-20 14:14:56,996 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-20 14:14:56,996 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-20 14:14:56,996 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-20 14:14:56,997 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,997 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,997 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,997 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,997 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,997 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,997 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-20 14:14:56,997 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-20 14:14:56,997 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-20 14:14:56,998 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-20 14:14:56,998 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-20 14:14:56,998 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-20 14:14:56,998 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-20 14:14:56,998 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-20 14:14:56,998 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-20 14:14:56,998 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-20 14:14:56,998 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-20 14:14:56,998 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-20 14:14:56,999 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-20 14:14:56,999 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,999 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,999 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,999 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,999 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,999 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:56,999 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-20 14:14:56,999 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-20 14:14:56,999 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-20 14:14:57,000 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-20 14:14:57,000 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-20 14:14:57,000 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-20 14:14:57,000 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-20 14:14:57,000 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-20 14:14:57,000 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-20 14:14:57,000 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-20 14:14:57,000 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-20 14:14:57,000 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-20 14:14:57,000 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:57,001 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:57,001 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:57,001 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:57,001 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:57,001 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 14:14:57,001 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-20 14:14:57,001 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-20 14:14:57,001 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-20 14:14:57,001 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-20 14:14:57,001 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-20 14:14:57,001 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-20 14:14:57,002 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-20 14:14:57,002 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-20 14:14:57,002 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-20 14:14:57,002 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-20 14:14:57,002 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-20 14:14:57,002 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-20 14:14:57,002 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:14:57,002 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= ~a19~0 9) (<= 9 ~a19~0) (= 23 ~a1~0)) [2020-07-20 14:14:57,002 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:14:57,002 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:14:57,002 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (= 23 |old(~a1~0)|)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9)) (and (<= 9 ~a19~0) (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|))) [2020-07-20 14:14:57,003 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-20 14:14:57,003 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 8))) (or (and .cse0 (exists ((v_~a1~0_415 Int)) (let ((.cse1 (mod (+ v_~a1~0_415 39) 89))) (and (<= v_~a1~0_415 218) (<= ~a1~0 (+ .cse1 206)) (= 0 .cse1) (< 38 v_~a1~0_415))))) (<= ~a10~0 1) (not (<= |old(~a10~0)| 0)) (not (= 23 |old(~a1~0)|)) (not (<= 9 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9)) (and (<= ~a19~0 9) (<= 8 ~a19~0)) (and .cse0 (<= 4 ~a10~0)))) [2020-07-20 14:14:57,003 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-20 14:14:57,003 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-20 14:14:57,003 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 8))) (or (and .cse0 (exists ((v_~a1~0_415 Int)) (let ((.cse1 (mod (+ v_~a1~0_415 39) 89))) (and (<= v_~a1~0_415 218) (<= ~a1~0 (+ .cse1 206)) (= 0 .cse1) (< 38 v_~a1~0_415))))) (<= ~a10~0 1) (not (<= |old(~a10~0)| 0)) (not (= 23 |old(~a1~0)|)) (not (<= 9 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9)) (and (<= ~a19~0 9) (<= 8 ~a19~0)) (and .cse0 (<= 4 ~a10~0)))) [2020-07-20 14:14:57,003 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-20 14:14:57,012 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] [2020-07-20 14:14:57,013 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] [2020-07-20 14:14:57,013 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] [2020-07-20 14:14:57,014 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] [2020-07-20 14:14:57,021 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] [2020-07-20 14:14:57,022 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] [2020-07-20 14:14:57,022 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] [2020-07-20 14:14:57,022 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] [2020-07-20 14:14:57,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:14:57 BoogieIcfgContainer [2020-07-20 14:14:57,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:14:57,028 INFO L168 Benchmark]: Toolchain (without parser) took 326994.13 ms. Allocated memory was 145.8 MB in the beginning and 536.9 MB in the end (delta: 391.1 MB). Free memory was 101.6 MB in the beginning and 122.4 MB in the end (delta: -20.8 MB). Peak memory consumption was 405.4 MB. Max. memory is 7.1 GB. [2020-07-20 14:14:57,028 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 14:14:57,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 727.53 ms. Allocated memory was 145.8 MB in the beginning and 205.5 MB in the end (delta: 59.8 MB). Free memory was 101.4 MB in the beginning and 170.2 MB in the end (delta: -68.8 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. [2020-07-20 14:14:57,030 INFO L168 Benchmark]: Boogie Preprocessor took 123.69 ms. Allocated memory is still 205.5 MB. Free memory was 170.2 MB in the beginning and 165.4 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-07-20 14:14:57,031 INFO L168 Benchmark]: RCFGBuilder took 1347.72 ms. Allocated memory was 205.5 MB in the beginning and 238.6 MB in the end (delta: 33.0 MB). Free memory was 165.4 MB in the beginning and 180.0 MB in the end (delta: -14.6 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. [2020-07-20 14:14:57,031 INFO L168 Benchmark]: TraceAbstraction took 324790.14 ms. Allocated memory was 238.6 MB in the beginning and 536.9 MB in the end (delta: 298.3 MB). Free memory was 180.0 MB in the beginning and 122.4 MB in the end (delta: 57.6 MB). Peak memory consumption was 391.0 MB. Max. memory is 7.1 GB. [2020-07-20 14:14:57,035 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 727.53 ms. Allocated memory was 145.8 MB in the beginning and 205.5 MB in the end (delta: 59.8 MB). Free memory was 101.4 MB in the beginning and 170.2 MB in the end (delta: -68.8 MB). Peak memory consumption was 31.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.69 ms. Allocated memory is still 205.5 MB. Free memory was 170.2 MB in the beginning and 165.4 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1347.72 ms. Allocated memory was 205.5 MB in the beginning and 238.6 MB in the end (delta: 33.0 MB). Free memory was 165.4 MB in the beginning and 180.0 MB in the end (delta: -14.6 MB). Peak memory consumption was 80.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 324790.14 ms. Allocated memory was 238.6 MB in the beginning and 536.9 MB in the end (delta: 298.3 MB). Free memory was 180.0 MB in the beginning and 122.4 MB in the end (delta: 57.6 MB). Peak memory consumption was 391.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 106]: 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: 582]: Loop Invariant [2020-07-20 14:14:57,042 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] [2020-07-20 14:14:57,043 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] [2020-07-20 14:14:57,043 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] [2020-07-20 14:14:57,043 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] [2020-07-20 14:14:57,044 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] [2020-07-20 14:14:57,044 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] [2020-07-20 14:14:57,044 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] [2020-07-20 14:14:57,044 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_415,QUANTIFIED] Derived loop invariant: (((((((a19 <= 8 && (\exists v_~a1~0_415 : int :: ((v_~a1~0_415 <= 218 && a1 <= (v_~a1~0_415 + 39) % 89 + 206) && 0 == (v_~a1~0_415 + 39) % 89) && 38 < v_~a1~0_415)) || a10 <= 1) || !(\old(a10) <= 0)) || !(23 == \old(a1))) || !(9 <= \old(a19))) || !(\old(a19) <= 9)) || (a19 <= 9 && 8 <= a19)) || (a19 <= 8 && 4 <= a10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 317.8s, OverallIterations: 13, TraceHistogramMax: 4, AutomataDifference: 294.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 568 SDtfs, 3170 SDslu, 346 SDs, 0 SdLazy, 8010 SolverSat, 1342 SolverUnsat, 105 SolverUnknown, 0 SolverNotchecked, 249.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3692 GetRequests, 3620 SyntacticMatches, 8 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 52.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2964occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 13 MinimizatonAttempts, 1866 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 154 PreInvPairs, 216 NumberOfFragments, 395 HoareAnnotationTreeSize, 154 FomulaSimplifications, 12168 FormulaSimplificationTreeSizeReduction, 0.8s HoareSimplificationTime, 7 FomulaSimplificationsInter, 10830 FormulaSimplificationTreeSizeReductionInter, 5.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 17.4s InterpolantComputationTime, 2702 NumberOfCodeBlocks, 2702 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 3443 ConstructedInterpolants, 42 QuantifiedInterpolants, 2171277 SizeOfPredicates, 18 NumberOfNonLiveVariables, 4912 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 16 InterpolantComputations, 9 PerfectInterpolantSequences, 2806/2965 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...