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/Problem12_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:00:48,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:00:48,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:00:48,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:00:48,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:00:48,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:00:48,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:00:48,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:00:48,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:00:48,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:00:48,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:00:48,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:00:48,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:00:48,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:00:48,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:00:48,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:00:48,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:00:48,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:00:48,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:00:48,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:00:48,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:00:48,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:00:48,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:00:48,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:00:48,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 22:00:48,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:00:48,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:00:48,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:00:48,124 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:00:48,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:00:48,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:00:48,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:00:48,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:00:48,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:00:48,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:00:48,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:00:48,131 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 [2019-10-14 22:00:48,145 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:00:48,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:00:48,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:00:48,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:00:48,147 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:00:48,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:00:48,147 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:00:48,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:00:48,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:00:48,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:00:48,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:00:48,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:00:48,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:00:48,149 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:00:48,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:00:48,149 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:00:48,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:00:48,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:00:48,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:00:48,150 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:00:48,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:00:48,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:00:48,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:00:48,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:00:48,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:00:48,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:00:48,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:00:48,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:00:48,152 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:00:48,482 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:00:48,503 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:00:48,506 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:00:48,507 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:00:48,508 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:00:48,509 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label50.c [2019-10-14 22:00:48,568 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dab02fff4/58f005fbc33f47c3bec8987dae6e6bf7/FLAGc232ce3a3 [2019-10-14 22:00:49,346 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:00:49,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label50.c [2019-10-14 22:00:49,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dab02fff4/58f005fbc33f47c3bec8987dae6e6bf7/FLAGc232ce3a3 [2019-10-14 22:00:49,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dab02fff4/58f005fbc33f47c3bec8987dae6e6bf7 [2019-10-14 22:00:49,484 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:00:49,487 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:00:49,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:00:49,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:00:49,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:00:49,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:00:49" (1/1) ... [2019-10-14 22:00:49,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@371dfc2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:49, skipping insertion in model container [2019-10-14 22:00:49,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:00:49" (1/1) ... [2019-10-14 22:00:49,509 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:00:49,670 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:00:51,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:00:51,277 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:00:51,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:00:51,951 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:00:51,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:51 WrapperNode [2019-10-14 22:00:51,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:00:51,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:00:51,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:00:51,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:00:51,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:51" (1/1) ... [2019-10-14 22:00:51,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:51" (1/1) ... [2019-10-14 22:00:52,021 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:51" (1/1) ... [2019-10-14 22:00:52,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:51" (1/1) ... [2019-10-14 22:00:52,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:51" (1/1) ... [2019-10-14 22:00:52,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:51" (1/1) ... [2019-10-14 22:00:52,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:51" (1/1) ... [2019-10-14 22:00:52,226 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:00:52,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:00:52,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:00:52,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:00:52,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:51" (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 [2019-10-14 22:00:52,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:00:52,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:00:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 22:00:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-14 22:00:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-14 22:00:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-14 22:00:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:00:52,300 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 22:00:52,300 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-14 22:00:52,300 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-14 22:00:52,300 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-14 22:00:52,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:00:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:00:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 22:00:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:00:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:00:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:00:57,225 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:00:57,225 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 22:00:57,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:00:57 BoogieIcfgContainer [2019-10-14 22:00:57,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:00:57,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:00:57,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:00:57,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:00:57,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:00:49" (1/3) ... [2019-10-14 22:00:57,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16eee802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:00:57, skipping insertion in model container [2019-10-14 22:00:57,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:00:51" (2/3) ... [2019-10-14 22:00:57,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16eee802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:00:57, skipping insertion in model container [2019-10-14 22:00:57,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:00:57" (3/3) ... [2019-10-14 22:00:57,246 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label50.c [2019-10-14 22:00:57,266 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:00:57,276 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:00:57,288 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:00:57,333 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:00:57,333 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:00:57,333 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:00:57,333 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:00:57,333 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:00:57,334 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:00:57,334 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:00:57,334 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:00:57,381 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-10-14 22:00:57,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-14 22:00:57,388 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:00:57,390 INFO L380 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] [2019-10-14 22:00:57,392 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:00:57,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:00:57,398 INFO L82 PathProgramCache]: Analyzing trace with hash -830521731, now seen corresponding path program 1 times [2019-10-14 22:00:57,409 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:00:57,409 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168645878] [2019-10-14 22:00:57,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:00:57,410 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:00:57,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:00:57,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:00:57,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:00:57,816 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168645878] [2019-10-14 22:00:57,817 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:00:57,817 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:00:57,818 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717107876] [2019-10-14 22:00:57,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 22:00:57,823 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:00:57,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 22:00:57,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:00:57,842 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 5 states. [2019-10-14 22:01:06,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:01:06,576 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2019-10-14 22:01:06,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 22:01:06,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-10-14 22:01:06,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:01:06,630 INFO L225 Difference]: With dead ends: 2471 [2019-10-14 22:01:06,630 INFO L226 Difference]: Without dead ends: 1568 [2019-10-14 22:01:06,647 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-10-14 22:01:06,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2019-10-14 22:01:06,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2019-10-14 22:01:06,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2019-10-14 22:01:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2863 transitions. [2019-10-14 22:01:06,896 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2863 transitions. Word has length 24 [2019-10-14 22:01:06,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:01:06,897 INFO L462 AbstractCegarLoop]: Abstraction has 1553 states and 2863 transitions. [2019-10-14 22:01:06,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 22:01:06,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2863 transitions. [2019-10-14 22:01:06,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-14 22:01:06,906 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:01:06,906 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 22:01:06,907 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:01:06,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:01:06,908 INFO L82 PathProgramCache]: Analyzing trace with hash -2086118223, now seen corresponding path program 1 times [2019-10-14 22:01:06,908 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:01:06,908 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556800] [2019-10-14 22:01:06,908 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:06,908 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:06,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:01:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:07,241 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:01:07,242 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556800] [2019-10-14 22:01:07,242 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:01:07,243 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 22:01:07,243 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004622692] [2019-10-14 22:01:07,247 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 22:01:07,247 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:01:07,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 22:01:07,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:01:07,248 INFO L87 Difference]: Start difference. First operand 1553 states and 2863 transitions. Second operand 7 states. [2019-10-14 22:01:17,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:01:17,223 INFO L93 Difference]: Finished difference Result 4757 states and 8776 transitions. [2019-10-14 22:01:17,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 22:01:17,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2019-10-14 22:01:17,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:01:17,253 INFO L225 Difference]: With dead ends: 4757 [2019-10-14 22:01:17,254 INFO L226 Difference]: Without dead ends: 3210 [2019-10-14 22:01:17,261 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-14 22:01:17,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2019-10-14 22:01:17,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 3139. [2019-10-14 22:01:17,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3139 states. [2019-10-14 22:01:17,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 5141 transitions. [2019-10-14 22:01:17,387 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 5141 transitions. Word has length 93 [2019-10-14 22:01:17,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:01:17,389 INFO L462 AbstractCegarLoop]: Abstraction has 3139 states and 5141 transitions. [2019-10-14 22:01:17,389 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 22:01:17,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 5141 transitions. [2019-10-14 22:01:17,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-14 22:01:17,398 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:01:17,398 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 22:01:17,399 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:01:17,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:01:17,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1697930939, now seen corresponding path program 1 times [2019-10-14 22:01:17,400 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:01:17,400 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104842830] [2019-10-14 22:01:17,400 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:17,401 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:01:17,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:01:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:01:17,621 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104842830] [2019-10-14 22:01:17,622 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4974967] [2019-10-14 22:01:17,625 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 [2019-10-14 22:01:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:01:17,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-14 22:01:17,704 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:01:17,809 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 22:01:17,809 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 22:01:17,810 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 10 [2019-10-14 22:01:17,810 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896962140] [2019-10-14 22:01:17,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 22:01:17,811 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:01:17,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 22:01:17,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-14 22:01:17,812 INFO L87 Difference]: Start difference. First operand 3139 states and 5141 transitions. Second operand 10 states.