/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:17:14,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:17:14,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:17:14,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-21 01:17:14,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:17:14,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:17:14,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:17:14,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:17:14,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:17:14,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:17:14,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:17:14,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:17:14,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:17:14,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:17:14,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:17:14,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:17:14,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:17:14,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:17:14,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:17:14,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:17:14,681 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 01:17:14,704 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:17:14,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:17:14,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:17:14,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:17:14,707 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:17:14,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:17:14,707 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:17:14,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:17:14,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:17:14,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:17:14,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:17:14,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:17:14,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:17:14,710 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:17:14,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:17:14,711 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:17:14,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:17:14,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:17:14,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:17:14,711 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:17:14,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:17:14,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:17:14,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:17:14,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:17:14,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:17:14,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:17:14,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:14,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:17:14,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:17:14,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 01:17:15,036 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:17:15,050 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:17:15,053 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:17:15,055 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:17:15,055 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:17:15,056 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-07-21 01:17:15,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b34491a82/8c4d04acdf9d49b09c46251e51c39373/FLAG1fc7fbac5 [2020-07-21 01:17:15,826 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:17:15,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-07-21 01:17:15,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b34491a82/8c4d04acdf9d49b09c46251e51c39373/FLAG1fc7fbac5 [2020-07-21 01:17:16,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b34491a82/8c4d04acdf9d49b09c46251e51c39373 [2020-07-21 01:17:16,051 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:17:16,054 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:17:16,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:17:16,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:17:16,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:17:16,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:17:16" (1/1) ... [2020-07-21 01:17:16,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b8c7b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:16, skipping insertion in model container [2020-07-21 01:17:16,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:17:16" (1/1) ... [2020-07-21 01:17:16,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:17:16,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:17:16,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:17:16,548 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:17:16,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:17:16,836 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:17:16,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:16 WrapperNode [2020-07-21 01:17:16,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:17:16,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:17:16,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:17:16,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:17:16,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:16" (1/1) ... [2020-07-21 01:17:16,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:16" (1/1) ... [2020-07-21 01:17:16,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:16" (1/1) ... [2020-07-21 01:17:16,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:16" (1/1) ... [2020-07-21 01:17:16,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:16" (1/1) ... [2020-07-21 01:17:16,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:16" (1/1) ... [2020-07-21 01:17:16,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:16" (1/1) ... [2020-07-21 01:17:16,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:17:16,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:17:16,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:17:16,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:17:16,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:17:17,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:17:17,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:17:17,045 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 01:17:17,045 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:17:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 01:17:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:17:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:17:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 01:17:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:17:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:17:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:17:18,218 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:17:18,219 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 01:17:18,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:17:18 BoogieIcfgContainer [2020-07-21 01:17:18,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:17:18,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:17:18,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:17:18,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:17:18,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:17:16" (1/3) ... [2020-07-21 01:17:18,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243c5058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:17:18, skipping insertion in model container [2020-07-21 01:17:18,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:17:16" (2/3) ... [2020-07-21 01:17:18,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243c5058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:17:18, skipping insertion in model container [2020-07-21 01:17:18,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:17:18" (3/3) ... [2020-07-21 01:17:18,241 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2020-07-21 01:17:18,254 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:17:18,268 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:17:18,285 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:17:18,322 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:17:18,323 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:17:18,324 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:17:18,324 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:17:18,324 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:17:18,324 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:17:18,324 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:17:18,325 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:17:18,352 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 01:17:18,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-07-21 01:17:18,371 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:17:18,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:17:18,372 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:17:18,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:17:18,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1904695938, now seen corresponding path program 1 times [2020-07-21 01:17:18,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:17:18,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285248926] [2020-07-21 01:17:18,391 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:18,645 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:17:18,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:17:18,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-21 01:17:18,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:17:19,033 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-07-21 01:17:19,186 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2020-07-21 01:17:19,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:17:19,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:17:19,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285248926] [2020-07-21 01:17:19,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:17:19,668 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-21 01:17:19,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395492363] [2020-07-21 01:17:19,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 01:17:19,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:17:19,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 01:17:19,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:17:19,697 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 11 states. [2020-07-21 01:17:21,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:17:21,441 INFO L93 Difference]: Finished difference Result 472 states and 791 transitions. [2020-07-21 01:17:21,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:17:21,442 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 100 [2020-07-21 01:17:21,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:17:21,457 INFO L225 Difference]: With dead ends: 472 [2020-07-21 01:17:21,457 INFO L226 Difference]: Without dead ends: 203 [2020-07-21 01:17:21,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-07-21 01:17:21,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-21 01:17:21,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-07-21 01:17:21,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-21 01:17:21,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 275 transitions. [2020-07-21 01:17:21,529 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 275 transitions. Word has length 100 [2020-07-21 01:17:21,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:17:21,530 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 275 transitions. [2020-07-21 01:17:21,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 01:17:21,531 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 275 transitions. [2020-07-21 01:17:21,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-07-21 01:17:21,537 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:17:21,537 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:17:21,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:21,753 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:17:21,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:17:21,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1493638873, now seen corresponding path program 1 times [2020-07-21 01:17:21,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:17:21,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606326505] [2020-07-21 01:17:21,756 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:21,850 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:17:21,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:17:21,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-21 01:17:21,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:17:22,497 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:17:22,501 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-07-21 01:17:22,502 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 01:17:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:17:22,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:17:23,304 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-07-21 01:17:23,618 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 01:17:23,748 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 01:17:23,753 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 7 conjuncts [2020-07-21 01:17:23,755 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 6 conjuncts [2020-07-21 01:17:23,757 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 01:17:23,758 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 01:17:23,760 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:17:23,761 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 01:17:23,765 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 01:17:23,767 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 01:17:23,768 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:17:23,776 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:17:23,778 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:17:23,780 INFO L501 QuantifierPusher]: Distributing 14 disjuncts over 3 conjuncts [2020-07-21 01:17:23,783 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:17:23,784 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:17:23,785 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:17:23,793 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:17:23,794 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:17:23,796 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:17:23,799 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:17:23,802 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:17:23,803 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:17:23,819 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:17:23,820 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:17:23,824 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:17:23,826 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:17:24,421 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2020-07-21 01:17:24,424 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 8, 6, 7, 1] term [2020-07-21 01:17:24,425 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:17:24,484 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:17:24,485 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:24,545 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:24,570 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:17:24,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606326505] [2020-07-21 01:17:24,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:17:24,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2020-07-21 01:17:24,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337780657] [2020-07-21 01:17:24,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 01:17:24,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:17:24,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 01:17:24,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-07-21 01:17:24,809 INFO L87 Difference]: Start difference. First operand 203 states and 275 transitions. Second operand 25 states. [2020-07-21 01:17:25,761 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-21 01:17:26,285 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-07-21 01:17:26,568 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-07-21 01:17:27,001 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 01:17:27,212 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-07-21 01:17:27,635 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-07-21 01:17:29,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:17:29,947 INFO L93 Difference]: Finished difference Result 588 states and 878 transitions. [2020-07-21 01:17:29,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-21 01:17:29,948 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 108 [2020-07-21 01:17:29,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:17:29,958 INFO L225 Difference]: With dead ends: 588 [2020-07-21 01:17:29,959 INFO L226 Difference]: Without dead ends: 451 [2020-07-21 01:17:29,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 188 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=551, Invalid=1611, Unknown=0, NotChecked=0, Total=2162 [2020-07-21 01:17:29,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-07-21 01:17:30,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 417. [2020-07-21 01:17:30,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-21 01:17:30,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 548 transitions. [2020-07-21 01:17:30,053 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 548 transitions. Word has length 108 [2020-07-21 01:17:30,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:17:30,054 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 548 transitions. [2020-07-21 01:17:30,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 01:17:30,054 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 548 transitions. [2020-07-21 01:17:30,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-07-21 01:17:30,064 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:17:30,064 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:17:30,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:30,265 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:17:30,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:17:30,266 INFO L82 PathProgramCache]: Analyzing trace with hash 235879383, now seen corresponding path program 1 times [2020-07-21 01:17:30,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:17:30,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580285227] [2020-07-21 01:17:30,267 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:30,403 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:17:30,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:17:30,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 01:17:30,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:17:30,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:17:30,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:17:30,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580285227] [2020-07-21 01:17:30,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:17:30,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:17:30,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445145222] [2020-07-21 01:17:30,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:17:30,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:17:30,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:17:30,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:17:30,433 INFO L87 Difference]: Start difference. First operand 417 states and 548 transitions. Second operand 3 states. [2020-07-21 01:17:30,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:17:30,976 INFO L93 Difference]: Finished difference Result 1042 states and 1430 transitions. [2020-07-21 01:17:30,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:17:30,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-07-21 01:17:30,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:17:30,982 INFO L225 Difference]: With dead ends: 1042 [2020-07-21 01:17:30,982 INFO L226 Difference]: Without dead ends: 691 [2020-07-21 01:17:30,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:17:30,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-07-21 01:17:31,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2020-07-21 01:17:31,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-07-21 01:17:31,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 902 transitions. [2020-07-21 01:17:31,013 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 902 transitions. Word has length 111 [2020-07-21 01:17:31,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:17:31,014 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 902 transitions. [2020-07-21 01:17:31,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:17:31,014 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 902 transitions. [2020-07-21 01:17:31,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-07-21 01:17:31,018 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:17:31,018 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:17:31,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:31,223 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:17:31,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:17:31,224 INFO L82 PathProgramCache]: Analyzing trace with hash -2022552526, now seen corresponding path program 1 times [2020-07-21 01:17:31,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:17:31,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981378723] [2020-07-21 01:17:31,225 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:31,346 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 01:17:31,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:17:31,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:17:31,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:17:31,390 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:17:31,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:17:31,457 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:17:31,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981378723] [2020-07-21 01:17:31,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:17:31,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 01:17:31,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108250650] [2020-07-21 01:17:31,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 01:17:31,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:17:31,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 01:17:31,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:17:31,460 INFO L87 Difference]: Start difference. First operand 691 states and 902 transitions. Second operand 8 states. [2020-07-21 01:17:33,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:17:33,392 INFO L93 Difference]: Finished difference Result 2763 states and 3750 transitions. [2020-07-21 01:17:33,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 01:17:33,394 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 119 [2020-07-21 01:17:33,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:17:33,416 INFO L225 Difference]: With dead ends: 2763 [2020-07-21 01:17:33,417 INFO L226 Difference]: Without dead ends: 2138 [2020-07-21 01:17:33,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:17:33,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2138 states. [2020-07-21 01:17:33,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 1662. [2020-07-21 01:17:33,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1662 states. [2020-07-21 01:17:33,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2119 transitions. [2020-07-21 01:17:33,521 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2119 transitions. Word has length 119 [2020-07-21 01:17:33,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:17:33,522 INFO L479 AbstractCegarLoop]: Abstraction has 1662 states and 2119 transitions. [2020-07-21 01:17:33,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 01:17:33,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2119 transitions. [2020-07-21 01:17:33,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-07-21 01:17:33,534 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:17:33,535 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:17:33,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:33,750 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:17:33,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:17:33,750 INFO L82 PathProgramCache]: Analyzing trace with hash 308691738, now seen corresponding path program 1 times [2020-07-21 01:17:33,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:17:33,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705265542] [2020-07-21 01:17:33,751 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:33,839 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:17:33,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:17:33,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:17:33,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:17:33,880 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:17:33,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:17:33,943 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:17:33,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705265542] [2020-07-21 01:17:33,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:17:33,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:17:33,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659574452] [2020-07-21 01:17:33,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:17:33,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:17:33,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:17:33,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:17:33,946 INFO L87 Difference]: Start difference. First operand 1662 states and 2119 transitions. Second operand 7 states. [2020-07-21 01:17:35,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:17:35,562 INFO L93 Difference]: Finished difference Result 5960 states and 7844 transitions. [2020-07-21 01:17:35,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:17:35,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-07-21 01:17:35,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:17:35,595 INFO L225 Difference]: With dead ends: 5960 [2020-07-21 01:17:35,595 INFO L226 Difference]: Without dead ends: 4364 [2020-07-21 01:17:35,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:17:35,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4364 states. [2020-07-21 01:17:35,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4364 to 3886. [2020-07-21 01:17:35,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3886 states. [2020-07-21 01:17:35,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3886 states to 3886 states and 4958 transitions. [2020-07-21 01:17:35,735 INFO L78 Accepts]: Start accepts. Automaton has 3886 states and 4958 transitions. Word has length 131 [2020-07-21 01:17:35,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:17:35,735 INFO L479 AbstractCegarLoop]: Abstraction has 3886 states and 4958 transitions. [2020-07-21 01:17:35,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:17:35,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3886 states and 4958 transitions. [2020-07-21 01:17:35,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-07-21 01:17:35,744 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:17:35,744 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:17:35,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:35,959 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:17:35,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:17:35,959 INFO L82 PathProgramCache]: Analyzing trace with hash -982570558, now seen corresponding path program 1 times [2020-07-21 01:17:35,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:17:35,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109255331] [2020-07-21 01:17:35,960 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:36,045 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:17:36,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:17:36,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 01:17:36,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:17:36,075 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:17:36,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:17:36,134 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:17:36,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109255331] [2020-07-21 01:17:36,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:17:36,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 01:17:36,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382305334] [2020-07-21 01:17:36,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 01:17:36,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:17:36,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 01:17:36,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:17:36,141 INFO L87 Difference]: Start difference. First operand 3886 states and 4958 transitions. Second operand 6 states. [2020-07-21 01:17:36,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:17:36,963 INFO L93 Difference]: Finished difference Result 7327 states and 9406 transitions. [2020-07-21 01:17:36,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:17:36,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-07-21 01:17:36,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:17:36,985 INFO L225 Difference]: With dead ends: 7327 [2020-07-21 01:17:36,985 INFO L226 Difference]: Without dead ends: 4331 [2020-07-21 01:17:36,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:17:36,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4331 states. [2020-07-21 01:17:37,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4331 to 3624. [2020-07-21 01:17:37,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3624 states. [2020-07-21 01:17:37,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 4438 transitions. [2020-07-21 01:17:37,094 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 4438 transitions. Word has length 136 [2020-07-21 01:17:37,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:17:37,095 INFO L479 AbstractCegarLoop]: Abstraction has 3624 states and 4438 transitions. [2020-07-21 01:17:37,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 01:17:37,095 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 4438 transitions. [2020-07-21 01:17:37,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-07-21 01:17:37,103 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:17:37,103 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:17:37,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:37,317 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:17:37,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:17:37,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1924315545, now seen corresponding path program 1 times [2020-07-21 01:17:37,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:17:37,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836566742] [2020-07-21 01:17:37,321 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:37,408 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 01:17:37,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:17:37,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:17:37,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:17:37,465 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 01:17:37,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:17:37,672 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 01:17:37,719 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:17:37,720 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:37,721 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:17:37,721 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:37,722 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:37,722 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:37,723 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:37,837 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-21 01:17:37,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836566742] [2020-07-21 01:17:37,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:17:37,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:17:37,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163080757] [2020-07-21 01:17:37,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:17:37,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:17:37,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:17:37,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:17:37,840 INFO L87 Difference]: Start difference. First operand 3624 states and 4438 transitions. Second operand 7 states. [2020-07-21 01:17:39,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:17:39,132 INFO L93 Difference]: Finished difference Result 6411 states and 7763 transitions. [2020-07-21 01:17:39,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:17:39,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-07-21 01:17:39,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:17:39,148 INFO L225 Difference]: With dead ends: 6411 [2020-07-21 01:17:39,149 INFO L226 Difference]: Without dead ends: 3256 [2020-07-21 01:17:39,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 288 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 01:17:39,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2020-07-21 01:17:39,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 2782. [2020-07-21 01:17:39,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2782 states. [2020-07-21 01:17:39,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2782 states to 2782 states and 3187 transitions. [2020-07-21 01:17:39,231 INFO L78 Accepts]: Start accepts. Automaton has 2782 states and 3187 transitions. Word has length 146 [2020-07-21 01:17:39,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:17:39,232 INFO L479 AbstractCegarLoop]: Abstraction has 2782 states and 3187 transitions. [2020-07-21 01:17:39,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:17:39,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2782 states and 3187 transitions. [2020-07-21 01:17:39,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-07-21 01:17:39,240 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:17:39,240 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:17:39,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:39,454 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:17:39,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:17:39,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1378238699, now seen corresponding path program 1 times [2020-07-21 01:17:39,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:17:39,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476239804] [2020-07-21 01:17:39,456 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:39,557 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:17:39,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:17:39,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:17:39,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:17:39,611 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 01:17:39,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:17:39,812 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 01:17:39,853 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:39,853 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:39,854 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:39,855 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:17:39,856 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:39,856 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[5, 2, 1] term [2020-07-21 01:17:39,857 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:39,955 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 84 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 01:17:39,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476239804] [2020-07-21 01:17:39,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:17:39,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:17:39,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656453770] [2020-07-21 01:17:39,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:17:39,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:17:39,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:17:39,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:17:39,957 INFO L87 Difference]: Start difference. First operand 2782 states and 3187 transitions. Second operand 7 states. [2020-07-21 01:17:41,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:17:41,059 INFO L93 Difference]: Finished difference Result 4857 states and 5542 transitions. [2020-07-21 01:17:41,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:17:41,061 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-07-21 01:17:41,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:17:41,074 INFO L225 Difference]: With dead ends: 4857 [2020-07-21 01:17:41,074 INFO L226 Difference]: Without dead ends: 2804 [2020-07-21 01:17:41,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 350 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:17:41,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2020-07-21 01:17:41,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2790. [2020-07-21 01:17:41,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2790 states. [2020-07-21 01:17:41,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 3096 transitions. [2020-07-21 01:17:41,151 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 3096 transitions. Word has length 176 [2020-07-21 01:17:41,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:17:41,151 INFO L479 AbstractCegarLoop]: Abstraction has 2790 states and 3096 transitions. [2020-07-21 01:17:41,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:17:41,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 3096 transitions. [2020-07-21 01:17:41,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-07-21 01:17:41,159 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:17:41,160 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:17:41,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:41,374 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:17:41,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:17:41,374 INFO L82 PathProgramCache]: Analyzing trace with hash -2147375956, now seen corresponding path program 1 times [2020-07-21 01:17:41,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:17:41,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891275969] [2020-07-21 01:17:41,375 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:41,510 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:17:41,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:17:41,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 01:17:41,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:17:41,545 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 01:17:41,549 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:17:41,630 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-07-21 01:17:41,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:17:41,825 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 01:17:41,871 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:41,872 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:17:41,873 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:41,874 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:17:41,874 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:41,875 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:41,876 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:41,876 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:41,877 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:41,877 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:41,878 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:41,879 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[8, 2, 1] term [2020-07-21 01:17:41,880 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:41,880 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 2, 1] term [2020-07-21 01:17:41,881 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:41,912 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:17:41,966 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:41,968 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:17:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 108 proven. 47 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 01:17:42,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891275969] [2020-07-21 01:17:42,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:17:42,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2020-07-21 01:17:42,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954712410] [2020-07-21 01:17:42,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 01:17:42,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:17:42,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 01:17:42,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:17:42,138 INFO L87 Difference]: Start difference. First operand 2790 states and 3096 transitions. Second operand 8 states. [2020-07-21 01:17:43,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:17:43,015 INFO L93 Difference]: Finished difference Result 5524 states and 6213 transitions. [2020-07-21 01:17:43,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:17:43,015 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 198 [2020-07-21 01:17:43,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:17:43,027 INFO L225 Difference]: With dead ends: 5524 [2020-07-21 01:17:43,027 INFO L226 Difference]: Without dead ends: 2655 [2020-07-21 01:17:43,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 391 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:17:43,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2020-07-21 01:17:43,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 2363. [2020-07-21 01:17:43,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2363 states. [2020-07-21 01:17:43,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 2643 transitions. [2020-07-21 01:17:43,091 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 2643 transitions. Word has length 198 [2020-07-21 01:17:43,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:17:43,091 INFO L479 AbstractCegarLoop]: Abstraction has 2363 states and 2643 transitions. [2020-07-21 01:17:43,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 01:17:43,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 2643 transitions. [2020-07-21 01:17:43,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-07-21 01:17:43,099 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:17:43,099 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:17:43,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:43,313 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:17:43,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:17:43,314 INFO L82 PathProgramCache]: Analyzing trace with hash -482265210, now seen corresponding path program 1 times [2020-07-21 01:17:43,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:17:43,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835889542] [2020-07-21 01:17:43,315 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:43,439 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:17:43,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:17:43,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:17:43,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:17:43,506 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-07-21 01:17:43,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:17:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 162 proven. 33 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-07-21 01:17:43,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835889542] [2020-07-21 01:17:43,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:17:43,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:17:43,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102643335] [2020-07-21 01:17:43,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:17:43,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:17:43,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:17:43,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:17:43,635 INFO L87 Difference]: Start difference. First operand 2363 states and 2643 transitions. Second operand 7 states. [2020-07-21 01:17:44,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:17:44,683 INFO L93 Difference]: Finished difference Result 4934 states and 5536 transitions. [2020-07-21 01:17:44,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 01:17:44,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2020-07-21 01:17:44,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:17:44,693 INFO L225 Difference]: With dead ends: 4934 [2020-07-21 01:17:44,694 INFO L226 Difference]: Without dead ends: 2774 [2020-07-21 01:17:44,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 451 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:17:44,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2020-07-21 01:17:44,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2357. [2020-07-21 01:17:44,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2357 states. [2020-07-21 01:17:44,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 2577 transitions. [2020-07-21 01:17:44,750 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 2577 transitions. Word has length 227 [2020-07-21 01:17:44,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:17:44,750 INFO L479 AbstractCegarLoop]: Abstraction has 2357 states and 2577 transitions. [2020-07-21 01:17:44,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:17:44,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 2577 transitions. [2020-07-21 01:17:44,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-07-21 01:17:44,758 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:17:44,758 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:17:44,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:44,972 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:17:44,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:17:44,973 INFO L82 PathProgramCache]: Analyzing trace with hash -202608830, now seen corresponding path program 1 times [2020-07-21 01:17:44,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:17:44,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056604209] [2020-07-21 01:17:44,974 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:45,107 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:17:45,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:17:45,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 01:17:45,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:17:45,141 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 01:17:45,142 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:17:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-07-21 01:17:45,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:17:45,483 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 01:17:45,550 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:45,551 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:45,552 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:17:45,552 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:45,553 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:45,554 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:17:45,554 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:45,555 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:17:45,556 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:45,556 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:45,557 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:17:45,558 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:45,559 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:45,593 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:17:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 181 proven. 15 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-07-21 01:17:45,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056604209] [2020-07-21 01:17:45,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:17:45,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:17:45,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690215863] [2020-07-21 01:17:45,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:17:45,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:17:45,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:17:45,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:17:45,834 INFO L87 Difference]: Start difference. First operand 2357 states and 2577 transitions. Second operand 7 states. [2020-07-21 01:17:46,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:17:46,781 INFO L93 Difference]: Finished difference Result 5613 states and 6206 transitions. [2020-07-21 01:17:46,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:17:46,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2020-07-21 01:17:46,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:17:46,794 INFO L225 Difference]: With dead ends: 5613 [2020-07-21 01:17:46,794 INFO L226 Difference]: Without dead ends: 3322 [2020-07-21 01:17:46,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 504 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 01:17:46,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3322 states. [2020-07-21 01:17:46,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3322 to 3316. [2020-07-21 01:17:46,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3316 states. [2020-07-21 01:17:46,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3316 states to 3316 states and 3651 transitions. [2020-07-21 01:17:46,864 INFO L78 Accepts]: Start accepts. Automaton has 3316 states and 3651 transitions. Word has length 254 [2020-07-21 01:17:46,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:17:46,864 INFO L479 AbstractCegarLoop]: Abstraction has 3316 states and 3651 transitions. [2020-07-21 01:17:46,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:17:46,865 INFO L276 IsEmpty]: Start isEmpty. Operand 3316 states and 3651 transitions. [2020-07-21 01:17:46,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-07-21 01:17:46,875 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:17:46,875 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:17:47,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:47,091 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:17:47,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:17:47,091 INFO L82 PathProgramCache]: Analyzing trace with hash 618439527, now seen corresponding path program 1 times [2020-07-21 01:17:47,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:17:47,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25949835] [2020-07-21 01:17:47,092 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:47,245 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:17:47,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:17:47,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 01:17:47,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:17:47,274 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 2, 1] term [2020-07-21 01:17:47,275 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:17:47,333 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 237 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:17:47,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:17:47,429 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:17:47,430 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:17:47,454 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:17:47,637 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 237 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:17:47,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25949835] [2020-07-21 01:17:47,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:17:47,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:17:47,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718391607] [2020-07-21 01:17:47,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:17:47,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:17:47,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:17:47,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:17:47,640 INFO L87 Difference]: Start difference. First operand 3316 states and 3651 transitions. Second operand 7 states. [2020-07-21 01:17:48,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:17:48,565 INFO L93 Difference]: Finished difference Result 5230 states and 5789 transitions. [2020-07-21 01:17:48,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 01:17:48,566 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 267 [2020-07-21 01:17:48,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:17:48,586 INFO L225 Difference]: With dead ends: 5230 [2020-07-21 01:17:48,586 INFO L226 Difference]: Without dead ends: 3485 [2020-07-21 01:17:48,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 530 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 01:17:48,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3485 states. [2020-07-21 01:17:48,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3485 to 3459. [2020-07-21 01:17:48,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3459 states. [2020-07-21 01:17:48,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3459 states to 3459 states and 3798 transitions. [2020-07-21 01:17:48,683 INFO L78 Accepts]: Start accepts. Automaton has 3459 states and 3798 transitions. Word has length 267 [2020-07-21 01:17:48,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:17:48,684 INFO L479 AbstractCegarLoop]: Abstraction has 3459 states and 3798 transitions. [2020-07-21 01:17:48,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:17:48,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3459 states and 3798 transitions. [2020-07-21 01:17:48,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-07-21 01:17:48,697 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:17:48,697 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:17:48,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:48,911 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:17:48,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:17:48,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1262654143, now seen corresponding path program 1 times [2020-07-21 01:17:48,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:17:48,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103468167] [2020-07-21 01:17:48,913 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:49,137 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:17:49,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:17:49,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:17:49,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:17:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 297 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:17:49,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:17:49,362 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:17:49,363 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:17:49,575 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 297 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:17:49,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103468167] [2020-07-21 01:17:49,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:17:49,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:17:49,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30397540] [2020-07-21 01:17:49,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:17:49,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:17:49,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:17:49,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:17:49,577 INFO L87 Difference]: Start difference. First operand 3459 states and 3798 transitions. Second operand 7 states. [2020-07-21 01:17:50,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:17:50,761 INFO L93 Difference]: Finished difference Result 6856 states and 7529 transitions. [2020-07-21 01:17:50,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:17:50,762 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 287 [2020-07-21 01:17:50,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:17:50,764 INFO L225 Difference]: With dead ends: 6856 [2020-07-21 01:17:50,764 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:17:50,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 572 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:17:50,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:17:50,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:17:50,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:17:50,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:17:50,778 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 287 [2020-07-21 01:17:50,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:17:50,778 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:17:50,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:17:50,779 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:17:50,779 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:17:50,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:17:50,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:17:51,748 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 185 [2020-07-21 01:17:52,004 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 175 [2020-07-21 01:17:54,066 WARN L193 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 277 DAG size of output: 95 [2020-07-21 01:17:55,337 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 197 DAG size of output: 73 [2020-07-21 01:17:56,516 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 187 DAG size of output: 73 [2020-07-21 01:17:56,521 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:17:56,521 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a8~0 |old(~a8~0)|) (<= ~a16~0 |old(~a16~0)|) (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (<= |old(~a16~0)| ~a16~0) (<= |old(~a8~0)| ~a8~0) (= ~a20~0 |old(~a20~0)|) (= ~a21~0 |old(~a21~0)|)) [2020-07-21 01:17:56,521 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:17:56,522 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 01:17:56,522 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 01:17:56,522 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,522 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,522 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,522 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,522 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,522 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,523 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 01:17:56,523 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 01:17:56,523 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 01:17:56,523 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 01:17:56,523 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 01:17:56,523 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 01:17:56,523 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 01:17:56,524 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 01:17:56,524 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 01:17:56,524 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 01:17:56,524 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,524 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,524 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,524 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,524 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,524 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,524 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 01:17:56,525 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 01:17:56,525 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 01:17:56,525 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 01:17:56,525 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 01:17:56,525 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 01:17:56,525 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 01:17:56,525 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 01:17:56,525 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 01:17:56,526 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 01:17:56,526 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 01:17:56,526 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 458) no Hoare annotation was computed. [2020-07-21 01:17:56,526 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 01:17:56,526 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 01:17:56,526 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 01:17:56,526 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 01:17:56,527 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,527 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,527 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,527 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,527 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,527 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 01:17:56,527 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 01:17:56,528 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 01:17:56,528 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 01:17:56,528 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 01:17:56,528 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 01:17:56,528 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 01:17:56,528 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 01:17:56,528 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 01:17:56,529 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,529 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,529 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,529 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,529 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,529 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 01:17:56,529 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 01:17:56,529 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 01:17:56,530 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 01:17:56,530 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 01:17:56,530 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 01:17:56,530 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 01:17:56,530 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 01:17:56,530 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 01:17:56,530 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 01:17:56,530 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 01:17:56,531 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 01:17:56,531 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 01:17:56,531 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,531 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,531 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,531 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,531 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,532 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 01:17:56,532 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 01:17:56,532 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 01:17:56,532 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 01:17:56,532 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 01:17:56,532 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 01:17:56,532 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 01:17:56,532 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 01:17:56,533 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 01:17:56,533 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,533 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,533 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,533 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,533 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,533 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,533 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 01:17:56,534 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,534 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 01:17:56,534 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 01:17:56,534 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 01:17:56,534 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 01:17:56,534 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 01:17:56,534 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 01:17:56,534 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 01:17:56,534 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 01:17:56,535 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 01:17:56,535 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 01:17:56,535 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 01:17:56,535 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 01:17:56,535 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 01:17:56,535 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,535 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,535 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,536 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,536 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,536 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 01:17:56,536 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 01:17:56,536 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 01:17:56,536 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 01:17:56,536 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 01:17:56,536 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 01:17:56,537 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 01:17:56,537 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 01:17:56,537 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,537 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,537 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,537 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,537 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,537 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 01:17:56,537 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 01:17:56,537 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 01:17:56,538 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 01:17:56,538 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 01:17:56,538 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 01:17:56,538 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 01:17:56,538 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 01:17:56,538 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 01:17:56,538 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 01:17:56,539 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse23 (= 1 |old(~a17~0)|)) (.cse22 (= 1 |old(~a20~0)|))) (let ((.cse11 (= 1 |old(~a21~0)|)) (.cse0 (<= ~a16~0 |old(~a16~0)|)) (.cse1 (<= ~a8~0 |old(~a8~0)|)) (.cse2 (= ~a7~0 |old(~a7~0)|)) (.cse3 (= ~a17~0 |old(~a17~0)|)) (.cse4 (<= |old(~a16~0)| ~a16~0)) (.cse5 (<= |old(~a8~0)| ~a8~0)) (.cse6 (= ~a20~0 |old(~a20~0)|)) (.cse17 (not .cse22)) (.cse9 (not .cse23))) (let ((.cse14 (and (or .cse17 .cse9) (or .cse22 .cse23))) (.cse8 (not (<= |old(~a8~0)| 13))) (.cse10 (not (<= |old(~a16~0)| 4))) (.cse15 (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= 1 ~a21~0) .cse6)) (.cse18 (not (<= |old(~a7~0)| 0))) (.cse19 (not (= 8 ~a12~0))) (.cse13 (not (<= |old(~a16~0)| 5))) (.cse21 (not (< 4 |old(~a16~0)|))) (.cse20 (not (< |old(~a8~0)| 15))) (.cse12 (not (= 1 |old(~a7~0)|))) (.cse7 (= ~a21~0 |old(~a21~0)|)) (.cse16 (not .cse11))) (and (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) .cse8 .cse9 .cse10 .cse11) (or .cse12 .cse13 .cse14 .cse15 .cse16) (or .cse17 .cse18 (and .cse3 .cse4 .cse5) .cse16 .cse19) (or .cse18 .cse14 .cse15 .cse16 .cse19) (or (and .cse1 .cse0 .cse2 .cse3 .cse4 .cse5 (= 1 ~a20~0) .cse7) (and (or .cse17 .cse20 (not (<= 6 |old(~a16~0)|))) (or .cse17 .cse8 .cse10))) (or (not (<= 15 |old(~a8~0)|)) .cse18 .cse15 .cse16 .cse19) (or (and (or .cse18 .cse19) (or .cse17 .cse20)) (and .cse0 .cse1 .cse2 .cse6 .cse7) .cse13 .cse16) (or .cse12 .cse13 .cse21 .cse6 .cse16) (or .cse17 (and .cse1 .cse0 .cse2 .cse5 (= 1 ~a17~0) (< 4 ~a16~0) .cse6 .cse7) .cse21 .cse9 .cse20) (or .cse12 (and .cse1 .cse0 (= 1 ~a7~0) (<= 5 ~a16~0) .cse7) (not (<= 5 |old(~a16~0)|)) .cse16))))) [2020-07-21 01:17:56,539 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 01:17:56,539 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,539 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,539 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,539 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,540 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 01:17:56,540 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,540 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,540 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 01:17:56,540 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 01:17:56,540 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 01:17:56,540 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 01:17:56,540 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 01:17:56,540 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 01:17:56,541 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 01:17:56,541 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 01:17:56,541 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 01:17:56,541 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 01:17:56,541 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 01:17:56,541 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 01:17:56,541 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,541 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,541 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,541 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,542 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,542 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 01:17:56,542 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,542 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 01:17:56,542 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 01:17:56,542 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 01:17:56,542 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 01:17:56,542 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 01:17:56,542 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 01:17:56,543 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 01:17:56,543 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 01:17:56,543 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 01:17:56,543 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 01:17:56,543 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 01:17:56,543 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 01:17:56,543 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 01:17:56,543 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 01:17:56,543 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,543 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,544 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,544 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,544 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,544 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:17:56,544 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 01:17:56,544 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 01:17:56,544 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 01:17:56,544 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 01:17:56,544 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 01:17:56,545 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 01:17:56,545 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 01:17:56,545 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 01:17:56,545 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 01:17:56,545 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 01:17:56,545 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:17:56,545 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (= 1 ~a17~0) (= 1 ~a21~0) (= 1 ~a20~0) (= 15 ~a8~0) (= 5 ~a16~0) (= 8 ~a12~0)) [2020-07-21 01:17:56,545 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:17:56,545 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:17:56,546 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (and (<= ~a8~0 |old(~a8~0)|) (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (<= 15 ~a8~0) (= 1 ~a21~0) (= ~a20~0 |old(~a20~0)|) (= 5 ~a16~0)) (not (= 1 |old(~a20~0)|)) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))) [2020-07-21 01:17:56,546 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 01:17:56,546 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse10 (= 1 ~a17~0)) (.cse8 (= 1 ~a20~0))) (let ((.cse9 (<= ~a8~0 13)) (.cse11 (<= ~a16~0 4)) (.cse0 (= 1 ~a7~0)) (.cse1 (not (= 1 |old(~a7~0)|))) (.cse2 (or (and (not .cse8) (not .cse10)) (and .cse10 .cse8))) (.cse4 (< 4 |old(~a16~0)|)) (.cse7 (< ~a8~0 15)) (.cse12 (< 4 ~a16~0)) (.cse6 (< 14 |old(~a8~0)|)) (.cse13 (<= ~a7~0 0)) (.cse3 (<= ~a16~0 5)) (.cse5 (= 1 ~a21~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (and (<= 6 ~a16~0) .cse4 .cse7 .cse8 .cse6) (not .cse4) (not (= 1 |old(~a17~0)|)) (and .cse9 .cse10 (not .cse5) .cse11) (and .cse9 .cse8 .cse11) (and .cse0 .cse1 .cse3 .cse4 .cse5 .cse12 .cse6) (not (= 1 |old(~a20~0)|)) (and .cse4 .cse5 .cse7 .cse8 .cse6) (and .cse2 .cse13 .cse5) (and .cse10 .cse4 .cse7 .cse8 .cse12 .cse6) (and .cse13 (<= 15 ~a8~0) .cse5) (not (<= |old(~a16~0)| 5)) (and .cse13 .cse3 .cse5) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))))) [2020-07-21 01:17:56,546 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 01:17:56,546 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 01:17:56,547 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse10 (= 1 ~a17~0)) (.cse8 (= 1 ~a20~0))) (let ((.cse9 (<= ~a8~0 13)) (.cse11 (<= ~a16~0 4)) (.cse0 (= 1 ~a7~0)) (.cse1 (not (= 1 |old(~a7~0)|))) (.cse2 (or (and (not .cse8) (not .cse10)) (and .cse10 .cse8))) (.cse4 (< 4 |old(~a16~0)|)) (.cse7 (< ~a8~0 15)) (.cse12 (< 4 ~a16~0)) (.cse6 (< 14 |old(~a8~0)|)) (.cse13 (<= ~a7~0 0)) (.cse3 (<= ~a16~0 5)) (.cse5 (= 1 ~a21~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (and (<= 6 ~a16~0) .cse4 .cse7 .cse8 .cse6) (not .cse4) (not (= 1 |old(~a17~0)|)) (and .cse9 .cse10 (not .cse5) .cse11) (and .cse9 .cse8 .cse11) (and .cse0 .cse1 .cse3 .cse4 .cse5 .cse12 .cse6) (not (= 1 |old(~a20~0)|)) (and .cse4 .cse5 .cse7 .cse8 .cse6) (and .cse2 .cse13 .cse5) (and .cse10 .cse4 .cse7 .cse8 .cse12 .cse6) (and .cse13 (<= 15 ~a8~0) .cse5) (not (<= |old(~a16~0)| 5)) (and .cse13 .cse3 .cse5) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))))) [2020-07-21 01:17:56,547 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 01:17:56,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:17:56 BoogieIcfgContainer [2020-07-21 01:17:56,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:17:56,581 INFO L168 Benchmark]: Toolchain (without parser) took 40529.29 ms. Allocated memory was 143.7 MB in the beginning and 661.7 MB in the end (delta: 518.0 MB). Free memory was 98.2 MB in the beginning and 392.0 MB in the end (delta: -293.8 MB). Peak memory consumption was 516.0 MB. Max. memory is 7.1 GB. [2020-07-21 01:17:56,582 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 143.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 01:17:56,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 782.48 ms. Allocated memory was 143.7 MB in the beginning and 203.4 MB in the end (delta: 59.8 MB). Free memory was 97.7 MB in the beginning and 169.7 MB in the end (delta: -72.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. [2020-07-21 01:17:56,585 INFO L168 Benchmark]: Boogie Preprocessor took 135.10 ms. Allocated memory is still 203.4 MB. Free memory was 169.7 MB in the beginning and 164.6 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2020-07-21 01:17:56,586 INFO L168 Benchmark]: RCFGBuilder took 1254.77 ms. Allocated memory was 203.4 MB in the beginning and 233.3 MB in the end (delta: 29.9 MB). Free memory was 164.6 MB in the beginning and 178.6 MB in the end (delta: -14.0 MB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. [2020-07-21 01:17:56,587 INFO L168 Benchmark]: TraceAbstraction took 38346.16 ms. Allocated memory was 233.3 MB in the beginning and 661.7 MB in the end (delta: 428.3 MB). Free memory was 178.6 MB in the beginning and 392.0 MB in the end (delta: -213.3 MB). Peak memory consumption was 506.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:17:56,590 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 143.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 782.48 ms. Allocated memory was 143.7 MB in the beginning and 203.4 MB in the end (delta: 59.8 MB). Free memory was 97.7 MB in the beginning and 169.7 MB in the end (delta: -72.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.10 ms. Allocated memory is still 203.4 MB. Free memory was 169.7 MB in the beginning and 164.6 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1254.77 ms. Allocated memory was 203.4 MB in the beginning and 233.3 MB in the end (delta: 29.9 MB). Free memory was 164.6 MB in the beginning and 178.6 MB in the end (delta: -14.0 MB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 38346.16 ms. Allocated memory was 233.3 MB in the beginning and 661.7 MB in the end (delta: 428.3 MB). Free memory was 178.6 MB in the beginning and 392.0 MB in the end (delta: -213.3 MB). Peak memory consumption was 506.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 458]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 583]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((1 == a7 && !(1 == \old(a7))) && ((!(1 == a20) && !(1 == a17)) || (1 == a17 && 1 == a20))) && a16 <= 5) && 4 < \old(a16)) && 1 == a21) && 14 < \old(a8)) || !(15 == \old(a8))) || !(\old(a7) <= 0)) || ((((6 <= a16 && 4 < \old(a16)) && a8 < 15) && 1 == a20) && 14 < \old(a8))) || !(4 < \old(a16))) || !(1 == \old(a17))) || (((a8 <= 13 && 1 == a17) && !(1 == a21)) && a16 <= 4)) || ((a8 <= 13 && 1 == a20) && a16 <= 4)) || ((((((1 == a7 && !(1 == \old(a7))) && a16 <= 5) && 4 < \old(a16)) && 1 == a21) && 4 < a16) && 14 < \old(a8))) || !(1 == \old(a20))) || ((((4 < \old(a16) && 1 == a21) && a8 < 15) && 1 == a20) && 14 < \old(a8))) || ((((!(1 == a20) && !(1 == a17)) || (1 == a17 && 1 == a20)) && a7 <= 0) && 1 == a21)) || (((((1 == a17 && 4 < \old(a16)) && a8 < 15) && 1 == a20) && 4 < a16) && 14 < \old(a8))) || ((a7 <= 0 && 15 <= a8) && 1 == a21)) || !(\old(a16) <= 5)) || ((a7 <= 0 && a16 <= 5) && 1 == a21)) || !(1 == \old(a21))) || !(8 == a12) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 32.6s, OverallIterations: 13, TraceHistogramMax: 6, AutomataDifference: 19.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 537 SDtfs, 7190 SDslu, 676 SDs, 0 SdLazy, 13660 SolverSat, 1749 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4393 GetRequests, 4233 SyntacticMatches, 12 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3886occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 13 MinimizatonAttempts, 2924 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 221 PreInvPairs, 291 NumberOfFragments, 936 HoareAnnotationTreeSize, 221 FomulaSimplifications, 10815 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 7 FomulaSimplificationsInter, 16806 FormulaSimplificationTreeSizeReductionInter, 4.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 2260 NumberOfCodeBlocks, 1379 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 4285 ConstructedInterpolants, 0 QuantifiedInterpolants, 3839682 SizeOfPredicates, 63 NumberOfNonLiveVariables, 5307 ConjunctsInSsa, 217 ConjunctsInUnsatCore, 24 InterpolantComputations, 2 PerfectInterpolantSequences, 3341/3504 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...