/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/Problem10_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:27:35,885 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 01:27:35,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:27:35,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:27:35,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:27:35,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:27:35,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:27:35,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:27:35,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:27:35,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:27:35,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:27:35,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:27:35,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:27:35,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:27:35,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:27:35,964 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 01:27:35,999 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:27:35,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:27:36,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:27:36,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:27:36,002 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:27:36,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:27:36,002 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:27:36,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:27:36,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:27:36,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:27:36,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:27:36,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:27:36,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:27:36,004 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:27:36,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:27:36,004 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:27:36,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:27:36,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:27:36,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:27:36,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:27:36,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:27:36,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:27:36,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:27:36,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:27:36,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:27:36,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:27:36,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:36,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:27:36,007 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:27:36,008 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 01:27:36,289 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:27:36,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:27:36,305 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:27:36,307 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:27:36,307 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:27:36,308 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-07-21 01:27:36,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52957cce3/ebbc7df6a7504ded9a8d625f222c3272/FLAGad117f279 [2020-07-21 01:27:36,903 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:27:36,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label31.c [2020-07-21 01:27:36,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52957cce3/ebbc7df6a7504ded9a8d625f222c3272/FLAGad117f279 [2020-07-21 01:27:37,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52957cce3/ebbc7df6a7504ded9a8d625f222c3272 [2020-07-21 01:27:37,195 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:27:37,198 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:27:37,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:27:37,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:27:37,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:27:37,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:27:37" (1/1) ... [2020-07-21 01:27:37,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b72a91b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:37, skipping insertion in model container [2020-07-21 01:27:37,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:27:37" (1/1) ... [2020-07-21 01:27:37,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:27:37,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:27:37,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:27:37,811 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:27:37,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:27:37,940 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:27:37,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:37 WrapperNode [2020-07-21 01:27:37,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:27:37,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:27:37,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:27:37,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:27:37,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:37" (1/1) ... [2020-07-21 01:27:37,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:37" (1/1) ... [2020-07-21 01:27:37,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:37" (1/1) ... [2020-07-21 01:27:37,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:37" (1/1) ... [2020-07-21 01:27:38,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:37" (1/1) ... [2020-07-21 01:27:38,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:37" (1/1) ... [2020-07-21 01:27:38,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:37" (1/1) ... [2020-07-21 01:27:38,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:27:38,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:27:38,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:27:38,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:27:38,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:37" (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 01:27:38,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:27:38,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:27:38,136 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 01:27:38,136 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:27:38,136 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 01:27:38,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:27:38,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:27:38,137 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 01:27:38,137 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:27:38,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:27:38,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:27:39,329 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:27:39,329 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 01:27:39,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:27:39 BoogieIcfgContainer [2020-07-21 01:27:39,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:27:39,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:27:39,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:27:39,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:27:39,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:27:37" (1/3) ... [2020-07-21 01:27:39,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed764e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:27:39, skipping insertion in model container [2020-07-21 01:27:39,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:27:37" (2/3) ... [2020-07-21 01:27:39,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed764e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:27:39, skipping insertion in model container [2020-07-21 01:27:39,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:27:39" (3/3) ... [2020-07-21 01:27:39,343 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label31.c [2020-07-21 01:27:39,353 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:27:39,361 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:27:39,375 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:27:39,401 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:27:39,402 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:27:39,402 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:27:39,402 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:27:39,403 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:27:39,403 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:27:39,403 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:27:39,403 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:27:39,425 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 01:27:39,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-07-21 01:27:39,434 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:39,435 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] [2020-07-21 01:27:39,436 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:39,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:39,442 INFO L82 PathProgramCache]: Analyzing trace with hash -721063394, now seen corresponding path program 1 times [2020-07-21 01:27:39,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:39,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001743857] [2020-07-21 01:27:39,452 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 01:27:39,571 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:27:39,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:39,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:27:39,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:39,644 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 01:27:39,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:27:39,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001743857] [2020-07-21 01:27:39,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:27:39,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:27:39,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674069452] [2020-07-21 01:27:39,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:27:39,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:39,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:27:39,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:27:39,669 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 01:27:40,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:40,634 INFO L93 Difference]: Finished difference Result 571 states and 989 transitions. [2020-07-21 01:27:40,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:27:40,636 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2020-07-21 01:27:40,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:40,650 INFO L225 Difference]: With dead ends: 571 [2020-07-21 01:27:40,651 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 01:27:40,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 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 01:27:40,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 01:27:40,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 01:27:40,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 01:27:40,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 391 transitions. [2020-07-21 01:27:40,722 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 391 transitions. Word has length 49 [2020-07-21 01:27:40,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:40,723 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 391 transitions. [2020-07-21 01:27:40,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:27:40,723 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 391 transitions. [2020-07-21 01:27:40,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-07-21 01:27:40,728 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:40,729 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:27:40,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:40,943 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:40,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:40,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1937216922, now seen corresponding path program 1 times [2020-07-21 01:27:40,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:40,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402546262] [2020-07-21 01:27:40,946 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 01:27:41,039 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:27:41,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:41,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 01:27:41,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 01:27:41,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:27:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 01:27:41,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402546262] [2020-07-21 01:27:41,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:27:41,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2020-07-21 01:27:41,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195364430] [2020-07-21 01:27:41,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 01:27:41,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:41,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 01:27:41,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:27:41,279 INFO L87 Difference]: Start difference. First operand 294 states and 391 transitions. Second operand 4 states. [2020-07-21 01:27:41,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:41,953 INFO L93 Difference]: Finished difference Result 586 states and 786 transitions. [2020-07-21 01:27:41,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 01:27:41,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 119 [2020-07-21 01:27:41,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:41,963 INFO L225 Difference]: With dead ends: 586 [2020-07-21 01:27:41,964 INFO L226 Difference]: Without dead ends: 584 [2020-07-21 01:27:41,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:27:41,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2020-07-21 01:27:42,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2020-07-21 01:27:42,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-07-21 01:27:42,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 784 transitions. [2020-07-21 01:27:42,015 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 784 transitions. Word has length 119 [2020-07-21 01:27:42,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:42,018 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 784 transitions. [2020-07-21 01:27:42,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 01:27:42,019 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 784 transitions. [2020-07-21 01:27:42,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-07-21 01:27:42,024 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:42,025 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 01:27:42,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:42,240 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:42,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:42,241 INFO L82 PathProgramCache]: Analyzing trace with hash 179342018, now seen corresponding path program 1 times [2020-07-21 01:27:42,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:42,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602501623] [2020-07-21 01:27:42,243 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 01:27:42,346 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:27:42,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:42,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:27:42,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:42,412 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:42,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:27:42,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602501623] [2020-07-21 01:27:42,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:27:42,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:27:42,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063612668] [2020-07-21 01:27:42,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:27:42,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:42,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:27:42,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:27:42,415 INFO L87 Difference]: Start difference. First operand 584 states and 784 transitions. Second operand 5 states. [2020-07-21 01:27:43,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:43,397 INFO L93 Difference]: Finished difference Result 1472 states and 2014 transitions. [2020-07-21 01:27:43,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:27:43,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-07-21 01:27:43,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:43,407 INFO L225 Difference]: With dead ends: 1472 [2020-07-21 01:27:43,407 INFO L226 Difference]: Without dead ends: 894 [2020-07-21 01:27:43,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:27:43,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-07-21 01:27:43,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 880. [2020-07-21 01:27:43,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 880 states. [2020-07-21 01:27:43,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1114 transitions. [2020-07-21 01:27:43,439 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1114 transitions. Word has length 171 [2020-07-21 01:27:43,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:43,440 INFO L479 AbstractCegarLoop]: Abstraction has 880 states and 1114 transitions. [2020-07-21 01:27:43,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:27:43,440 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1114 transitions. [2020-07-21 01:27:43,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-07-21 01:27:43,442 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:43,443 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 01:27:43,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:43,656 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:43,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:43,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1903843694, now seen corresponding path program 1 times [2020-07-21 01:27:43,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:43,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307728489] [2020-07-21 01:27:43,658 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 01:27:43,774 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:27:43,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:43,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:27:43,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:43,856 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:43,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:27:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:27:44,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307728489] [2020-07-21 01:27:44,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:27:44,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:27:44,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292172248] [2020-07-21 01:27:44,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:27:44,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:44,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:27:44,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:27:44,003 INFO L87 Difference]: Start difference. First operand 880 states and 1114 transitions. Second operand 7 states. [2020-07-21 01:27:45,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:45,293 INFO L93 Difference]: Finished difference Result 2352 states and 3091 transitions. [2020-07-21 01:27:45,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 01:27:45,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 201 [2020-07-21 01:27:45,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:45,306 INFO L225 Difference]: With dead ends: 2352 [2020-07-21 01:27:45,307 INFO L226 Difference]: Without dead ends: 1478 [2020-07-21 01:27:45,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 397 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:27:45,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2020-07-21 01:27:45,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1474. [2020-07-21 01:27:45,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2020-07-21 01:27:45,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 1881 transitions. [2020-07-21 01:27:45,355 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 1881 transitions. Word has length 201 [2020-07-21 01:27:45,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:45,355 INFO L479 AbstractCegarLoop]: Abstraction has 1474 states and 1881 transitions. [2020-07-21 01:27:45,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:27:45,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 1881 transitions. [2020-07-21 01:27:45,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-07-21 01:27:45,360 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:45,361 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:27:45,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:45,571 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:45,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:45,572 INFO L82 PathProgramCache]: Analyzing trace with hash 877092530, now seen corresponding path program 1 times [2020-07-21 01:27:45,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:45,573 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367450099] [2020-07-21 01:27:45,574 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 01:27:45,682 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:27:45,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:45,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 01:27:45,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:45,754 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-07-21 01:27:45,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:27:45,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367450099] [2020-07-21 01:27:45,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:27:45,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:27:45,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340253403] [2020-07-21 01:27:45,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:27:45,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:45,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:27:45,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:27:45,759 INFO L87 Difference]: Start difference. First operand 1474 states and 1881 transitions. Second operand 5 states. [2020-07-21 01:27:46,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:46,711 INFO L93 Difference]: Finished difference Result 3119 states and 3989 transitions. [2020-07-21 01:27:46,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:27:46,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 245 [2020-07-21 01:27:46,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:46,720 INFO L225 Difference]: With dead ends: 3119 [2020-07-21 01:27:46,720 INFO L226 Difference]: Without dead ends: 1651 [2020-07-21 01:27:46,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:27:46,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2020-07-21 01:27:46,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1341. [2020-07-21 01:27:46,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-07-21 01:27:46,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1714 transitions. [2020-07-21 01:27:46,770 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1714 transitions. Word has length 245 [2020-07-21 01:27:46,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:46,770 INFO L479 AbstractCegarLoop]: Abstraction has 1341 states and 1714 transitions. [2020-07-21 01:27:46,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:27:46,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1714 transitions. [2020-07-21 01:27:46,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-07-21 01:27:46,777 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:46,777 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 01:27:46,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:46,991 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:46,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:46,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1929001938, now seen corresponding path program 1 times [2020-07-21 01:27:46,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:46,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239462737] [2020-07-21 01:27:46,993 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 01:27:47,099 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:27:47,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:47,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:27:47,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:47,123 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 01:27:47,124 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:27:47,245 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 298 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-07-21 01:27:47,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:27:47,314 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:27:47,315 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:27:47,320 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 01:27:47,320 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:27:47,469 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 198 proven. 77 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-07-21 01:27:47,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239462737] [2020-07-21 01:27:47,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:27:47,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 01:27:47,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141603987] [2020-07-21 01:27:47,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 01:27:47,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:47,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 01:27:47,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:27:47,472 INFO L87 Difference]: Start difference. First operand 1341 states and 1714 transitions. Second operand 6 states. [2020-07-21 01:27:48,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:48,468 INFO L93 Difference]: Finished difference Result 2716 states and 3587 transitions. [2020-07-21 01:27:48,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:27:48,468 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 315 [2020-07-21 01:27:48,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:48,478 INFO L225 Difference]: With dead ends: 2716 [2020-07-21 01:27:48,479 INFO L226 Difference]: Without dead ends: 1524 [2020-07-21 01:27:48,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 626 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:27:48,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2020-07-21 01:27:48,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1500. [2020-07-21 01:27:48,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1500 states. [2020-07-21 01:27:48,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 1791 transitions. [2020-07-21 01:27:48,538 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 1791 transitions. Word has length 315 [2020-07-21 01:27:48,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:48,538 INFO L479 AbstractCegarLoop]: Abstraction has 1500 states and 1791 transitions. [2020-07-21 01:27:48,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 01:27:48,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 1791 transitions. [2020-07-21 01:27:48,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-21 01:27:48,545 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:48,546 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 01:27:48,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:48,759 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:48,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:48,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1900234379, now seen corresponding path program 1 times [2020-07-21 01:27:48,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:48,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315380324] [2020-07-21 01:27:48,761 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 01:27:48,861 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:27:48,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:48,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:27:48,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:49,014 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-07-21 01:27:49,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:27:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 205 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-07-21 01:27:49,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315380324] [2020-07-21 01:27:49,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:27:49,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:27:49,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579210319] [2020-07-21 01:27:49,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:27:49,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:27:49,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:27:49,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:27:49,157 INFO L87 Difference]: Start difference. First operand 1500 states and 1791 transitions. Second operand 7 states. [2020-07-21 01:27:50,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:27:50,538 INFO L93 Difference]: Finished difference Result 4156 states and 5003 transitions. [2020-07-21 01:27:50,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:27:50,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 324 [2020-07-21 01:27:50,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:27:50,555 INFO L225 Difference]: With dead ends: 4156 [2020-07-21 01:27:50,556 INFO L226 Difference]: Without dead ends: 2207 [2020-07-21 01:27:50,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 643 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 01:27:50,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2020-07-21 01:27:50,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 1345. [2020-07-21 01:27:50,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1345 states. [2020-07-21 01:27:50,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 1533 transitions. [2020-07-21 01:27:50,597 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 1533 transitions. Word has length 324 [2020-07-21 01:27:50,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:27:50,597 INFO L479 AbstractCegarLoop]: Abstraction has 1345 states and 1533 transitions. [2020-07-21 01:27:50,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:27:50,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 1533 transitions. [2020-07-21 01:27:50,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-07-21 01:27:50,604 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:27:50,605 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:27:50,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:27:50,820 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:27:50,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:27:50,821 INFO L82 PathProgramCache]: Analyzing trace with hash -2046581507, now seen corresponding path program 1 times [2020-07-21 01:27:50,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:27:50,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287965417] [2020-07-21 01:27:50,823 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 01:27:50,944 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:27:50,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:27:50,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-21 01:27:50,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:27:50,986 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:27:50,988 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:27:50,989 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:27:50,990 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:50,993 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:27:50,994 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:50,995 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:50,997 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:50,999 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 01:27:51,001 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:27:51,002 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:27:51,003 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 01:27:51,004 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 01:27:51,006 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:51,007 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:51,008 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:51,009 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:27:51,011 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:51,013 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:51,014 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:51,015 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:27:51,017 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:27:51,018 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:51,019 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:51,021 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:27:51,023 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 01:28:03,529 WARN L193 SmtUtils]: Spent 12.44 s on a formula simplification. DAG size of input: 64 DAG size of output: 31 [2020-07-21 01:28:03,560 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:28:03,642 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 01:28:03,643 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:28:03,644 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:28:03,665 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:28:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 350 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-07-21 01:28:03,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:28:03,965 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:03,966 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:03,967 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:03,967 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:03,987 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:03,988 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:04,093 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:04,096 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:04,096 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:04,097 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:28:04,098 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:28:04,098 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:28:04,099 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:28:04,101 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:04,102 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:28:04,103 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:04,104 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:04,104 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:28:04,106 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:28:04,106 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:04,108 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:28:04,108 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:28:04,109 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:28:04,110 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:28:04,111 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 01:28:04,113 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:28:04,113 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:28:04,114 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:28:04,114 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:28:04,115 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:28:04,117 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 01:28:04,118 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:28:04,118 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:28:04,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287965417] [2020-07-21 01:28:04,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:28:04,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-21 01:28:04,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318300111] [2020-07-21 01:28:04,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 01:28:04,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:28:04,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 01:28:04,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:28:04,261 INFO L87 Difference]: Start difference. First operand 1345 states and 1533 transitions. Second operand 8 states. [2020-07-21 01:28:18,905 WARN L193 SmtUtils]: Spent 12.43 s on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-07-21 01:28:19,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:28:19,735 INFO L93 Difference]: Finished difference Result 3874 states and 4644 transitions. [2020-07-21 01:28:19,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-21 01:28:19,736 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 360 [2020-07-21 01:28:19,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:28:19,748 INFO L225 Difference]: With dead ends: 3874 [2020-07-21 01:28:19,748 INFO L226 Difference]: Without dead ends: 2678 [2020-07-21 01:28:19,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 589 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2020-07-21 01:28:19,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2020-07-21 01:28:19,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 2664. [2020-07-21 01:28:19,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2664 states. [2020-07-21 01:28:19,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 3121 transitions. [2020-07-21 01:28:19,818 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 3121 transitions. Word has length 360 [2020-07-21 01:28:19,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:28:19,818 INFO L479 AbstractCegarLoop]: Abstraction has 2664 states and 3121 transitions. [2020-07-21 01:28:19,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 01:28:19,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 3121 transitions. [2020-07-21 01:28:19,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-07-21 01:28:19,829 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:28:19,829 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:28:20,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:20,045 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:28:20,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:28:20,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1382710183, now seen corresponding path program 1 times [2020-07-21 01:28:20,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:28:20,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682301809] [2020-07-21 01:28:20,047 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 01:28:20,247 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:28:20,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:28:20,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:28:20,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:28:20,406 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-07-21 01:28:20,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:28:20,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682301809] [2020-07-21 01:28:20,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:28:20,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:28:20,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752505410] [2020-07-21 01:28:20,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:28:20,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:28:20,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:28:20,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:28:20,408 INFO L87 Difference]: Start difference. First operand 2664 states and 3121 transitions. Second operand 3 states. [2020-07-21 01:28:21,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:28:21,169 INFO L93 Difference]: Finished difference Result 5322 states and 6231 transitions. [2020-07-21 01:28:21,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:28:21,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 374 [2020-07-21 01:28:21,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:28:21,180 INFO L225 Difference]: With dead ends: 5322 [2020-07-21 01:28:21,180 INFO L226 Difference]: Without dead ends: 2662 [2020-07-21 01:28:21,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 372 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 01:28:21,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2020-07-21 01:28:21,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 2519. [2020-07-21 01:28:21,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2519 states. [2020-07-21 01:28:21,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 2915 transitions. [2020-07-21 01:28:21,254 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 2915 transitions. Word has length 374 [2020-07-21 01:28:21,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:28:21,254 INFO L479 AbstractCegarLoop]: Abstraction has 2519 states and 2915 transitions. [2020-07-21 01:28:21,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:28:21,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 2915 transitions. [2020-07-21 01:28:21,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-07-21 01:28:21,262 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:28:21,262 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:28:21,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:21,477 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:28:21,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:28:21,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1603927890, now seen corresponding path program 1 times [2020-07-21 01:28:21,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:28:21,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813304647] [2020-07-21 01:28:21,479 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 01:28:21,679 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:28:21,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:28:21,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:28:21,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:28:21,777 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-07-21 01:28:21,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:28:21,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813304647] [2020-07-21 01:28:21,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:28:21,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:28:21,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491221889] [2020-07-21 01:28:21,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:28:21,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:28:21,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:28:21,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:28:21,779 INFO L87 Difference]: Start difference. First operand 2519 states and 2915 transitions. Second operand 3 states. [2020-07-21 01:28:22,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:28:22,345 INFO L93 Difference]: Finished difference Result 2519 states and 2915 transitions. [2020-07-21 01:28:22,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:28:22,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 379 [2020-07-21 01:28:22,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:28:22,348 INFO L225 Difference]: With dead ends: 2519 [2020-07-21 01:28:22,348 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:28:22,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 377 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 01:28:22,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:28:22,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:28:22,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:28:22,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:28:22,353 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 379 [2020-07-21 01:28:22,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:28:22,353 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:28:22,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:28:22,353 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:28:22,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:28:22,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:28:22,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:28:23,738 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 40 [2020-07-21 01:28:24,152 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 40 [2020-07-21 01:28:24,529 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 40 [2020-07-21 01:28:24,534 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:28:24,534 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (or (< 7 ~a19~0) (< |old(~a19~0)| 8)) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|)) [2020-07-21 01:28:24,535 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:28:24,535 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 01:28:24,535 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,535 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,535 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,535 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,536 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,536 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,536 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 01:28:24,536 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 01:28:24,536 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 01:28:24,536 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 01:28:24,536 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 01:28:24,536 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 01:28:24,537 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 01:28:24,537 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 01:28:24,537 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 01:28:24,537 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 01:28:24,537 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 01:28:24,537 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,537 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,537 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,538 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,538 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,538 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 01:28:24,538 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 01:28:24,538 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 01:28:24,538 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 01:28:24,538 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 01:28:24,538 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 01:28:24,539 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 01:28:24,539 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 01:28:24,539 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 01:28:24,539 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 01:28:24,539 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 01:28:24,539 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 01:28:24,539 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 01:28:24,539 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 133) no Hoare annotation was computed. [2020-07-21 01:28:24,540 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 01:28:24,540 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,540 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,540 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,540 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,540 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,540 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 01:28:24,540 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 01:28:24,540 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 01:28:24,541 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 01:28:24,541 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 01:28:24,541 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 01:28:24,541 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 01:28:24,541 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 01:28:24,541 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 01:28:24,541 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 01:28:24,541 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,542 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,542 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,542 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,542 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,542 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 01:28:24,542 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 01:28:24,542 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 01:28:24,542 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 01:28:24,543 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 01:28:24,543 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 01:28:24,543 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 01:28:24,543 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 01:28:24,543 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 01:28:24,543 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 01:28:24,543 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 01:28:24,543 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 01:28:24,543 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 01:28:24,544 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,544 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,544 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,544 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,544 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,544 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 01:28:24,544 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 01:28:24,544 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 01:28:24,545 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 01:28:24,545 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 01:28:24,545 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 01:28:24,545 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 01:28:24,545 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 01:28:24,545 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 01:28:24,545 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,545 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,545 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,546 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,546 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,546 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,546 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,546 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 01:28:24,546 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 01:28:24,546 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 01:28:24,546 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 01:28:24,546 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 01:28:24,547 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 01:28:24,547 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 01:28:24,547 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 01:28:24,547 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 01:28:24,547 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 01:28:24,547 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 01:28:24,547 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 01:28:24,547 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 01:28:24,547 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,548 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,548 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,548 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,548 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 01:28:24,548 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,548 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,548 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 01:28:24,548 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 01:28:24,549 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 01:28:24,549 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 01:28:24,549 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 01:28:24,549 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 01:28:24,549 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 01:28:24,549 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 01:28:24,549 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 01:28:24,549 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 01:28:24,549 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 01:28:24,550 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 01:28:24,550 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 01:28:24,550 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,550 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,550 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,550 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,550 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,550 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,550 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 01:28:24,550 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 01:28:24,551 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 01:28:24,551 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 01:28:24,551 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 01:28:24,551 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 01:28:24,551 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 01:28:24,551 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 01:28:24,551 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 01:28:24,551 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 01:28:24,551 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 01:28:24,552 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse4 (<= ~a10~0 |old(~a10~0)|)) (.cse5 (<= |old(~a10~0)| ~a10~0)) (.cse6 (<= ~a19~0 |old(~a19~0)|)) (.cse7 (= ~a1~0 |old(~a1~0)|))) (let ((.cse0 (not (< 7 |old(~a19~0)|))) (.cse1 (and .cse4 .cse5 .cse6 (< 7 ~a19~0) .cse7)) (.cse3 (and .cse4 .cse5 .cse6 .cse7)) (.cse2 (not (<= |old(~a10~0)| 2)))) (and (or .cse0 (not (<= |old(~a19~0)| 9)) .cse1) (or .cse0 .cse2 .cse1) (or (not (<= 4 |old(~a10~0)|)) .cse3 (not (<= |old(~a19~0)| 8))) (or (not (<= |old(~a19~0)| 6)) .cse3) (or .cse3 .cse2)))) [2020-07-21 01:28:24,552 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 01:28:24,552 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 01:28:24,552 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 01:28:24,552 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,552 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,552 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,553 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,553 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,553 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,553 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 01:28:24,553 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 01:28:24,553 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 01:28:24,553 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 01:28:24,553 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 01:28:24,553 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 01:28:24,554 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 01:28:24,554 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 01:28:24,554 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 01:28:24,554 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 01:28:24,554 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 01:28:24,554 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 01:28:24,554 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 01:28:24,554 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,555 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,555 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,555 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,555 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,555 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,555 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 01:28:24,555 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 01:28:24,555 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 01:28:24,555 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 01:28:24,555 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 01:28:24,556 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 01:28:24,556 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 01:28:24,556 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 01:28:24,556 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 01:28:24,556 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 01:28:24,556 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 01:28:24,556 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 01:28:24,556 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,556 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,557 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,557 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,557 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,557 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:28:24,557 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 01:28:24,557 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 01:28:24,557 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 01:28:24,557 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 01:28:24,557 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 01:28:24,558 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 01:28:24,558 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 01:28:24,558 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 01:28:24,558 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 01:28:24,558 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 01:28:24,558 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 01:28:24,558 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 01:28:24,558 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:28:24,558 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= ~a19~0 9) (< 7 ~a19~0) (= 23 ~a1~0)) [2020-07-21 01:28:24,559 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:28:24,559 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:28:24,559 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (not (<= |old(~a10~0)| 0)) (not (<= |old(~a19~0)| 9)) (and (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (< 7 ~a19~0) (= ~a1~0 |old(~a1~0)|))) [2020-07-21 01:28:24,559 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 01:28:24,559 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (< 7 ~a19~0)) (.cse1 (< 8 |old(~a19~0)|))) (or (and (<= ~a19~0 9) .cse0 .cse1) (not (<= |old(~a10~0)| 0)) (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (and (<= ~a10~0 0) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) .cse0 (= ~a1~0 |old(~a1~0)|)) (and (<= ~a10~0 2) .cse1) (and (<= ~a19~0 8) (<= 4 ~a10~0) .cse1) (and (<= ~a19~0 6) .cse1) (not (<= |old(~a19~0)| 9)))) [2020-07-21 01:28:24,559 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 01:28:24,559 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 01:28:24,560 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (< 7 ~a19~0)) (.cse1 (< 8 |old(~a19~0)|))) (or (and (<= ~a19~0 9) .cse0 .cse1) (not (<= |old(~a10~0)| 0)) (not (< 7 |old(~a19~0)|)) (not (= 23 |old(~a1~0)|)) (and (<= ~a10~0 0) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) .cse0 (= ~a1~0 |old(~a1~0)|)) (and (<= ~a10~0 2) .cse1) (and (<= ~a19~0 8) (<= 4 ~a10~0) .cse1) (and (<= ~a19~0 6) .cse1) (not (<= |old(~a19~0)| 9)))) [2020-07-21 01:28:24,560 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 01:28:24,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:28:24 BoogieIcfgContainer [2020-07-21 01:28:24,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:28:24,581 INFO L168 Benchmark]: Toolchain (without parser) took 47384.67 ms. Allocated memory was 145.8 MB in the beginning and 551.0 MB in the end (delta: 405.3 MB). Free memory was 102.0 MB in the beginning and 161.4 MB in the end (delta: -59.5 MB). Peak memory consumption was 345.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:28:24,581 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 01:28:24,582 INFO L168 Benchmark]: CACSL2BoogieTranslator took 742.27 ms. Allocated memory was 145.8 MB in the beginning and 205.5 MB in the end (delta: 59.8 MB). Free memory was 101.7 MB in the beginning and 171.7 MB in the end (delta: -69.9 MB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. [2020-07-21 01:28:24,583 INFO L168 Benchmark]: Boogie Preprocessor took 117.29 ms. Allocated memory is still 205.5 MB. Free memory was 171.7 MB in the beginning and 166.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-07-21 01:28:24,584 INFO L168 Benchmark]: RCFGBuilder took 1275.33 ms. Allocated memory was 205.5 MB in the beginning and 238.0 MB in the end (delta: 32.5 MB). Free memory was 166.8 MB in the beginning and 180.5 MB in the end (delta: -13.8 MB). Peak memory consumption was 81.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:28:24,584 INFO L168 Benchmark]: TraceAbstraction took 45242.75 ms. Allocated memory was 238.0 MB in the beginning and 551.0 MB in the end (delta: 313.0 MB). Free memory was 180.5 MB in the beginning and 161.4 MB in the end (delta: 19.1 MB). Peak memory consumption was 332.1 MB. Max. memory is 7.1 GB. [2020-07-21 01:28:24,588 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 742.27 ms. Allocated memory was 145.8 MB in the beginning and 205.5 MB in the end (delta: 59.8 MB). Free memory was 101.7 MB in the beginning and 171.7 MB in the end (delta: -69.9 MB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.29 ms. Allocated memory is still 205.5 MB. Free memory was 171.7 MB in the beginning and 166.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1275.33 ms. Allocated memory was 205.5 MB in the beginning and 238.0 MB in the end (delta: 32.5 MB). Free memory was 166.8 MB in the beginning and 180.5 MB in the end (delta: -13.8 MB). Peak memory consumption was 81.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 45242.75 ms. Allocated memory was 238.0 MB in the beginning and 551.0 MB in the end (delta: 313.0 MB). Free memory was 180.5 MB in the beginning and 161.4 MB in the end (delta: 19.1 MB). Peak memory consumption was 332.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 133]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 582]: Loop Invariant Derived loop invariant: (((((((((a19 <= 9 && 7 < a19) && 8 < \old(a19)) || !(\old(a10) <= 0)) || !(7 < \old(a19))) || !(23 == \old(a1))) || ((((a10 <= 0 && \old(a10) <= a10) && a19 <= \old(a19)) && 7 < a19) && a1 == \old(a1))) || (a10 <= 2 && 8 < \old(a19))) || ((a19 <= 8 && 4 <= a10) && 8 < \old(a19))) || (a19 <= 6 && 8 < \old(a19))) || !(\old(a19) <= 9) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 43.1s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 24.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 696 SDtfs, 3301 SDslu, 301 SDs, 0 SdLazy, 7138 SolverSat, 1298 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3759 GetRequests, 3692 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 25.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2664occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 1371 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 91 PreInvPairs, 135 NumberOfFragments, 310 HoareAnnotationTreeSize, 91 FomulaSimplifications, 3694 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 7 FomulaSimplificationsInter, 5618 FormulaSimplificationTreeSizeReductionInter, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 14.9s InterpolantComputationTime, 2537 NumberOfCodeBlocks, 1965 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 3482 ConstructedInterpolants, 6 QuantifiedInterpolants, 2221614 SizeOfPredicates, 15 NumberOfNonLiveVariables, 3510 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 3001/3204 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...