/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:19:46,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:19:46,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:19:46,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 19:19:46,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 19:19:46,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 19:19:46,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 19:19:46,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 19:19:46,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 19:19:46,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 19:19:46,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 19:19:46,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 19:19:46,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:19:46,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:19:46,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:19:46,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:19:46,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:19:46,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:19:46,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:19:46,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:19:46,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:19:46,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:19:47,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:19:47,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:19:47,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 19:19:47,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:19:47,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:19:47,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:19:47,014 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 [2019-11-06 19:19:47,028 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:19:47,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:19:47,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:19:47,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:19:47,030 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:19:47,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:19:47,031 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:19:47,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:19:47,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:19:47,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:19:47,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:19:47,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:19:47,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:19:47,032 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:19:47,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:19:47,032 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:19:47,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:19:47,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:19:47,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:19:47,033 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:19:47,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:19:47,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:19:47,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:19:47,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:19:47,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:19:47,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:19:47,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:19:47,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:19:47,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:19:47,337 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:19:47,360 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:19:47,364 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:19:47,365 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:19:47,366 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:19:47,367 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label12.c [2019-11-06 19:19:47,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a386845b/06035857c7fe4f86a1a274415ede64f7/FLAG72fca1c20 [2019-11-06 19:19:48,208 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:19:48,209 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label12.c [2019-11-06 19:19:48,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a386845b/06035857c7fe4f86a1a274415ede64f7/FLAG72fca1c20 [2019-11-06 19:19:48,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a386845b/06035857c7fe4f86a1a274415ede64f7 [2019-11-06 19:19:48,333 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:19:48,335 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:19:48,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:19:48,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:19:48,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:19:48,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:19:48" (1/1) ... [2019-11-06 19:19:48,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cc507e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:48, skipping insertion in model container [2019-11-06 19:19:48,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:19:48" (1/1) ... [2019-11-06 19:19:48,353 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:19:48,489 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:19:49,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:19:49,790 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:19:50,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:19:50,231 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:19:50,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:50 WrapperNode [2019-11-06 19:19:50,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:19:50,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:19:50,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:19:50,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:19:50,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:50" (1/1) ... [2019-11-06 19:19:50,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:50" (1/1) ... [2019-11-06 19:19:50,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:50" (1/1) ... [2019-11-06 19:19:50,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:50" (1/1) ... [2019-11-06 19:19:50,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:50" (1/1) ... [2019-11-06 19:19:50,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:50" (1/1) ... [2019-11-06 19:19:50,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:50" (1/1) ... [2019-11-06 19:19:50,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:19:50,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:19:50,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:19:50,483 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:19:50,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:50" (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 [2019-11-06 19:19:50,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:19:50,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:19:50,556 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:19:50,556 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 19:19:50,557 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 19:19:50,557 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:19:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:19:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 19:19:50,558 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 19:19:50,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:19:50,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:19:50,560 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:19:50,561 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:19:50,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:19:50,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:19:54,417 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:19:54,417 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:19:54,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:19:54 BoogieIcfgContainer [2019-11-06 19:19:54,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:19:54,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:19:54,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:19:54,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:19:54,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:19:48" (1/3) ... [2019-11-06 19:19:54,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722f10a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:19:54, skipping insertion in model container [2019-11-06 19:19:54,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:19:50" (2/3) ... [2019-11-06 19:19:54,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@722f10a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:19:54, skipping insertion in model container [2019-11-06 19:19:54,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:19:54" (3/3) ... [2019-11-06 19:19:54,440 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label12.c [2019-11-06 19:19:54,452 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:19:54,461 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:19:54,472 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:19:54,505 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:19:54,505 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:19:54,505 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:19:54,506 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:19:54,506 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:19:54,506 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:19:54,506 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:19:54,506 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:19:54,538 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-11-06 19:19:54,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-06 19:19:54,545 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:19:54,546 INFO L410 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] [2019-11-06 19:19:54,548 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:19:54,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:19:54,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1916525318, now seen corresponding path program 1 times [2019-11-06 19:19:54,621 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:19:54,621 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392062261] [2019-11-06 19:19:54,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:19:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:19:54,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:19:54,941 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392062261] [2019-11-06 19:19:54,942 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:19:54,942 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:19:54,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115007830] [2019-11-06 19:19:54,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:19:54,950 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:19:54,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:19:54,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:19:54,968 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2019-11-06 19:20:04,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:20:04,258 INFO L93 Difference]: Finished difference Result 2984 states and 5770 transitions. [2019-11-06 19:20:04,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:20:04,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-11-06 19:20:04,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:20:04,300 INFO L225 Difference]: With dead ends: 2984 [2019-11-06 19:20:04,301 INFO L226 Difference]: Without dead ends: 2142 [2019-11-06 19:20:04,311 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:20:04,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2019-11-06 19:20:04,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2132. [2019-11-06 19:20:04,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2019-11-06 19:20:04,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3753 transitions. [2019-11-06 19:20:04,484 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3753 transitions. Word has length 23 [2019-11-06 19:20:04,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:20:04,485 INFO L462 AbstractCegarLoop]: Abstraction has 2132 states and 3753 transitions. [2019-11-06 19:20:04,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:20:04,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3753 transitions. [2019-11-06 19:20:04,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-11-06 19:20:04,498 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:20:04,499 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 19:20:04,499 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:20:04,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:20:04,500 INFO L82 PathProgramCache]: Analyzing trace with hash -819711902, now seen corresponding path program 1 times [2019-11-06 19:20:04,501 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:20:04,501 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364505379] [2019-11-06 19:20:04,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:20:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:04,900 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:20:04,900 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364505379] [2019-11-06 19:20:04,901 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:20:04,901 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 19:20:04,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176642058] [2019-11-06 19:20:04,903 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 19:20:04,904 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:20:04,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 19:20:04,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:20:04,904 INFO L87 Difference]: Start difference. First operand 2132 states and 3753 transitions. Second operand 9 states. [2019-11-06 19:20:15,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:20:15,340 INFO L93 Difference]: Finished difference Result 8649 states and 15485 transitions. [2019-11-06 19:20:15,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 19:20:15,341 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2019-11-06 19:20:15,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:20:15,383 INFO L225 Difference]: With dead ends: 8649 [2019-11-06 19:20:15,384 INFO L226 Difference]: Without dead ends: 6523 [2019-11-06 19:20:15,392 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-11-06 19:20:15,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6523 states. [2019-11-06 19:20:15,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6523 to 6502. [2019-11-06 19:20:15,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6502 states. [2019-11-06 19:20:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6502 states to 6502 states and 9753 transitions. [2019-11-06 19:20:15,666 INFO L78 Accepts]: Start accepts. Automaton has 6502 states and 9753 transitions. Word has length 111 [2019-11-06 19:20:15,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:20:15,667 INFO L462 AbstractCegarLoop]: Abstraction has 6502 states and 9753 transitions. [2019-11-06 19:20:15,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 19:20:15,667 INFO L276 IsEmpty]: Start isEmpty. Operand 6502 states and 9753 transitions. [2019-11-06 19:20:15,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-11-06 19:20:15,678 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:20:15,679 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:20:15,679 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:20:15,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:20:15,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1618208947, now seen corresponding path program 1 times [2019-11-06 19:20:15,680 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:20:15,681 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673722953] [2019-11-06 19:20:15,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:20:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:15,978 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:20:15,979 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673722953] [2019-11-06 19:20:15,979 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189344675] [2019-11-06 19:20:15,979 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:20:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:16,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:20:16,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:20:16,121 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:20:16,122 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:20:16,122 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2019-11-06 19:20:16,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071539947] [2019-11-06 19:20:16,123 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:20:16,123 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:20:16,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:20:16,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-06 19:20:16,124 INFO L87 Difference]: Start difference. First operand 6502 states and 9753 transitions. Second operand 3 states. [2019-11-06 19:20:19,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:20:19,781 INFO L93 Difference]: Finished difference Result 17267 states and 25492 transitions. [2019-11-06 19:20:19,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:20:19,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2019-11-06 19:20:19,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:20:19,847 INFO L225 Difference]: With dead ends: 17267 [2019-11-06 19:20:19,848 INFO L226 Difference]: Without dead ends: 10771 [2019-11-06 19:20:19,866 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-06 19:20:19,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10771 states. [2019-11-06 19:20:20,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10771 to 9360. [2019-11-06 19:20:20,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9360 states. [2019-11-06 19:20:20,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9360 states to 9360 states and 13070 transitions. [2019-11-06 19:20:20,122 INFO L78 Accepts]: Start accepts. Automaton has 9360 states and 13070 transitions. Word has length 134 [2019-11-06 19:20:20,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:20:20,124 INFO L462 AbstractCegarLoop]: Abstraction has 9360 states and 13070 transitions. [2019-11-06 19:20:20,124 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:20:20,125 INFO L276 IsEmpty]: Start isEmpty. Operand 9360 states and 13070 transitions. [2019-11-06 19:20:20,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-11-06 19:20:20,130 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:20:20,131 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-06 19:20:20,337 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:20:20,338 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:20:20,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:20:20,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1504597139, now seen corresponding path program 1 times [2019-11-06 19:20:20,339 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:20:20,339 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937669508] [2019-11-06 19:20:20,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:20:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 19:20:20,798 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937669508] [2019-11-06 19:20:20,798 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883018804] [2019-11-06 19:20:20,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:20:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:20,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-06 19:20:20,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:20:21,006 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-06 19:20:21,006 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:20:21,006 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2019-11-06 19:20:21,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530041535] [2019-11-06 19:20:21,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:20:21,008 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:20:21,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:20:21,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-06 19:20:21,008 INFO L87 Difference]: Start difference. First operand 9360 states and 13070 transitions. Second operand 5 states.