/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_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:20:37,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:20:37,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:20:37,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 19:20:37,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:20:37,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:20:37,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:20:37,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:20:37,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:20:37,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:20:37,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:20:37,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:20:37,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:20:37,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:20:37,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:20:37,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:20:37,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 19:20:37,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:20:37,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:20:37,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:20:37,346 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 19:20:37,360 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:20:37,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:20:37,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:20:37,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:20:37,362 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:20:37,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:20:37,363 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:20:37,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:20:37,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:20:37,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:20:37,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:20:37,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:20:37,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:20:37,364 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:20:37,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:20:37,364 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:20:37,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:20:37,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:20:37,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:20:37,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:20:37,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:20:37,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:20:37,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:20:37,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:20:37,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:20:37,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:20:37,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:20:37,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:20:37,367 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:20:37,633 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:20:37,652 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:20:37,656 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:20:37,657 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:20:37,658 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:20:37,659 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label26.c [2019-11-06 19:20:37,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfbdc3696/ac2716e288c74de087c8e792dd25510c/FLAG827d6c9d5 [2019-11-06 19:20:38,563 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:20:38,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label26.c [2019-11-06 19:20:38,604 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfbdc3696/ac2716e288c74de087c8e792dd25510c/FLAG827d6c9d5 [2019-11-06 19:20:39,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfbdc3696/ac2716e288c74de087c8e792dd25510c [2019-11-06 19:20:39,112 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:20:39,113 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:20:39,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:20:39,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:20:39,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:20:39,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:20:39" (1/1) ... [2019-11-06 19:20:39,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6511c331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:20:39, skipping insertion in model container [2019-11-06 19:20:39,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:20:39" (1/1) ... [2019-11-06 19:20:39,129 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:20:39,254 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:20:40,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:20:40,498 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:20:41,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:20:41,234 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:20:41,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:20:41 WrapperNode [2019-11-06 19:20:41,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:20:41,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:20:41,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:20:41,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:20:41,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:20:41" (1/1) ... [2019-11-06 19:20:41,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:20:41" (1/1) ... [2019-11-06 19:20:41,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:20:41" (1/1) ... [2019-11-06 19:20:41,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:20:41" (1/1) ... [2019-11-06 19:20:41,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:20:41" (1/1) ... [2019-11-06 19:20:41,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:20:41" (1/1) ... [2019-11-06 19:20:41,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:20:41" (1/1) ... [2019-11-06 19:20:41,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:20:41,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:20:41,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:20:41,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:20:41,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:20:41" (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 19:20:41,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:20:41,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:20:41,545 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:20:41,545 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 19:20:41,545 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 19:20:41,545 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:20:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:20:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 19:20:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 19:20:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:20:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:20:41,547 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:20:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:20:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:20:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:20:45,380 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:20:45,381 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:20:45,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:20:45 BoogieIcfgContainer [2019-11-06 19:20:45,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:20:45,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:20:45,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:20:45,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:20:45,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:20:39" (1/3) ... [2019-11-06 19:20:45,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c69fbe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:20:45, skipping insertion in model container [2019-11-06 19:20:45,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:20:41" (2/3) ... [2019-11-06 19:20:45,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c69fbe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:20:45, skipping insertion in model container [2019-11-06 19:20:45,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:20:45" (3/3) ... [2019-11-06 19:20:45,397 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label26.c [2019-11-06 19:20:45,416 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:20:45,426 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:20:45,439 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:20:45,478 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:20:45,478 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:20:45,478 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:20:45,478 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:20:45,478 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:20:45,479 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:20:45,479 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:20:45,479 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:20:45,520 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-11-06 19:20:45,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-06 19:20:45,528 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:20:45,529 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:20:45,530 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:20:45,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:20:45,534 INFO L82 PathProgramCache]: Analyzing trace with hash 835114033, now seen corresponding path program 1 times [2019-11-06 19:20:45,541 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:20:45,542 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384417135] [2019-11-06 19:20:45,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:20:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:45,962 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 19:20:45,963 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384417135] [2019-11-06 19:20:45,964 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:20:45,964 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:20:45,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540177935] [2019-11-06 19:20:45,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:20:45,973 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:20:45,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:20:45,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:20:45,994 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 5 states. [2019-11-06 19:20:55,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:20:55,316 INFO L93 Difference]: Finished difference Result 2984 states and 5770 transitions. [2019-11-06 19:20:55,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:20:55,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-11-06 19:20:55,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:20:55,365 INFO L225 Difference]: With dead ends: 2984 [2019-11-06 19:20:55,366 INFO L226 Difference]: Without dead ends: 2142 [2019-11-06 19:20:55,382 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 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 19:20:55,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2019-11-06 19:20:55,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2132. [2019-11-06 19:20:55,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2019-11-06 19:20:55,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3753 transitions. [2019-11-06 19:20:55,587 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3753 transitions. Word has length 68 [2019-11-06 19:20:55,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:20:55,588 INFO L462 AbstractCegarLoop]: Abstraction has 2132 states and 3753 transitions. [2019-11-06 19:20:55,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:20:55,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3753 transitions. [2019-11-06 19:20:55,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-06 19:20:55,595 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:20:55,595 INFO L410 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, 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] [2019-11-06 19:20:55,596 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:20:55,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:20:55,596 INFO L82 PathProgramCache]: Analyzing trace with hash 506598757, now seen corresponding path program 1 times [2019-11-06 19:20:55,597 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:20:55,597 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365246391] [2019-11-06 19:20:55,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:20:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:20:55,919 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:20:55,919 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365246391] [2019-11-06 19:20:55,919 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:20:55,920 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 19:20:55,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841013700] [2019-11-06 19:20:55,922 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 19:20:55,922 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:20:55,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 19:20:55,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:20:55,923 INFO L87 Difference]: Start difference. First operand 2132 states and 3753 transitions. Second operand 9 states. [2019-11-06 19:21:07,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:21:07,437 INFO L93 Difference]: Finished difference Result 8641 states and 15457 transitions. [2019-11-06 19:21:07,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 19:21:07,441 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 141 [2019-11-06 19:21:07,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:21:07,477 INFO L225 Difference]: With dead ends: 8641 [2019-11-06 19:21:07,478 INFO L226 Difference]: Without dead ends: 6515 [2019-11-06 19:21:07,485 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-11-06 19:21:07,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6515 states. [2019-11-06 19:21:07,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6515 to 6485. [2019-11-06 19:21:07,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6485 states. [2019-11-06 19:21:07,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6485 states to 6485 states and 9454 transitions. [2019-11-06 19:21:07,675 INFO L78 Accepts]: Start accepts. Automaton has 6485 states and 9454 transitions. Word has length 141 [2019-11-06 19:21:07,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:21:07,676 INFO L462 AbstractCegarLoop]: Abstraction has 6485 states and 9454 transitions. [2019-11-06 19:21:07,676 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 19:21:07,676 INFO L276 IsEmpty]: Start isEmpty. Operand 6485 states and 9454 transitions. [2019-11-06 19:21:07,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-11-06 19:21:07,681 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:21:07,681 INFO L410 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, 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] [2019-11-06 19:21:07,682 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:21:07,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:21:07,682 INFO L82 PathProgramCache]: Analyzing trace with hash 238132644, now seen corresponding path program 1 times [2019-11-06 19:21:07,683 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:21:07,683 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394640306] [2019-11-06 19:21:07,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:21:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:21:08,043 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394640306] [2019-11-06 19:21:08,043 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639623118] [2019-11-06 19:21:08,043 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 19:21:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:08,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 19:21:08,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:21:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:21:08,244 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:21:08,245 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-11-06 19:21:08,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888985950] [2019-11-06 19:21:08,246 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 19:21:08,246 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:21:08,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 19:21:08,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:21:08,247 INFO L87 Difference]: Start difference. First operand 6485 states and 9454 transitions. Second operand 3 states. [2019-11-06 19:21:12,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:21:12,466 INFO L93 Difference]: Finished difference Result 19381 states and 28727 transitions. [2019-11-06 19:21:12,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 19:21:12,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2019-11-06 19:21:12,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:21:12,511 INFO L225 Difference]: With dead ends: 19381 [2019-11-06 19:21:12,511 INFO L226 Difference]: Without dead ends: 10759 [2019-11-06 19:21:12,533 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:21:12,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10759 states. [2019-11-06 19:21:12,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10759 to 10759. [2019-11-06 19:21:12,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10759 states. [2019-11-06 19:21:12,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10759 states to 10759 states and 12806 transitions. [2019-11-06 19:21:12,771 INFO L78 Accepts]: Start accepts. Automaton has 10759 states and 12806 transitions. Word has length 190 [2019-11-06 19:21:12,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:21:12,772 INFO L462 AbstractCegarLoop]: Abstraction has 10759 states and 12806 transitions. [2019-11-06 19:21:12,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 19:21:12,772 INFO L276 IsEmpty]: Start isEmpty. Operand 10759 states and 12806 transitions. [2019-11-06 19:21:12,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-11-06 19:21:12,776 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:21:12,776 INFO L410 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:21:12,977 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:21:12,977 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:21:12,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:21:12,978 INFO L82 PathProgramCache]: Analyzing trace with hash 756755471, now seen corresponding path program 1 times [2019-11-06 19:21:12,978 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:21:12,978 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871475741] [2019-11-06 19:21:12,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:21:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:13,307 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 122 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 19:21:13,308 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871475741] [2019-11-06 19:21:13,308 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861623931] [2019-11-06 19:21:13,309 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 19:21:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:21:13,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-06 19:21:13,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:21:13,554 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-11-06 19:21:13,554 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:21:13,554 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2019-11-06 19:21:13,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428967835] [2019-11-06 19:21:13,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:21:13,557 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:21:13,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:21:13,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-06 19:21:13,557 INFO L87 Difference]: Start difference. First operand 10759 states and 12806 transitions. Second operand 5 states.