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/Problem15_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:04:11,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:04:11,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:04:11,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:04:11,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:04:11,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:04:11,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:04:11,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:04:11,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:04:11,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:04:11,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:04:11,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:04:11,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:04:11,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:04:11,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:04:11,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:04:11,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:04:11,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:04:11,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:04:11,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:04:11,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:04:11,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:04:11,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:04:11,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:04:11,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 18:04:11,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:04:11,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:04:11,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:04:11,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:04:11,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:04:11,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:04:11,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:04:11,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:04:11,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:04:11,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:04:11,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:04:11,161 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 [2019-10-13 18:04:11,183 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:04:11,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:04:11,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:04:11,187 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:04:11,188 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:04:11,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:04:11,188 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:04:11,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:04:11,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:04:11,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:04:11,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:04:11,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:04:11,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:04:11,191 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:04:11,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:04:11,191 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:04:11,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:04:11,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:04:11,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:04:11,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:04:11,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:04:11,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:04:11,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:04:11,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:04:11,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:04:11,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:04:11,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:04:11,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:04:11,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:04:11,516 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:04:11,539 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:04:11,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:04:11,545 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:04:11,546 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:04:11,547 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label40.c [2019-10-13 18:04:11,618 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b1aa4ff0/c5bd6d67796d485d9876da6472f3c388/FLAG4349be33d [2019-10-13 18:04:12,289 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:04:12,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label40.c [2019-10-13 18:04:12,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b1aa4ff0/c5bd6d67796d485d9876da6472f3c388/FLAG4349be33d [2019-10-13 18:04:12,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b1aa4ff0/c5bd6d67796d485d9876da6472f3c388 [2019-10-13 18:04:12,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:04:12,472 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:04:12,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:04:12,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:04:12,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:04:12,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:04:12" (1/1) ... [2019-10-13 18:04:12,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47dba115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:12, skipping insertion in model container [2019-10-13 18:04:12,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:04:12" (1/1) ... [2019-10-13 18:04:12,490 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:04:12,576 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:04:13,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:04:13,508 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:04:13,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:04:13,928 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:04:13,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:13 WrapperNode [2019-10-13 18:04:13,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:04:13,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:04:13,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:04:13,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:04:13,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:13" (1/1) ... [2019-10-13 18:04:13,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:13" (1/1) ... [2019-10-13 18:04:14,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:13" (1/1) ... [2019-10-13 18:04:14,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:13" (1/1) ... [2019-10-13 18:04:14,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:13" (1/1) ... [2019-10-13 18:04:14,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:13" (1/1) ... [2019-10-13 18:04:14,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:13" (1/1) ... [2019-10-13 18:04:14,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:04:14,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:04:14,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:04:14,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:04:14,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:13" (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 [2019-10-13 18:04:14,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:04:14,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:04:14,207 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:04:14,207 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 18:04:14,208 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:04:14,208 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:04:14,208 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 18:04:14,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:04:14,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:04:14,209 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:04:14,209 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:04:14,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:04:14,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:04:18,422 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:04:18,423 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:04:18,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:04:18 BoogieIcfgContainer [2019-10-13 18:04:18,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:04:18,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:04:18,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:04:18,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:04:18,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:04:12" (1/3) ... [2019-10-13 18:04:18,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbed231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:04:18, skipping insertion in model container [2019-10-13 18:04:18,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:04:13" (2/3) ... [2019-10-13 18:04:18,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fbed231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:04:18, skipping insertion in model container [2019-10-13 18:04:18,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:04:18" (3/3) ... [2019-10-13 18:04:18,434 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label40.c [2019-10-13 18:04:18,444 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:04:18,453 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:04:18,464 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:04:18,495 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:04:18,495 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:04:18,496 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:04:18,496 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:04:18,496 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:04:18,496 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:04:18,496 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:04:18,496 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:04:18,526 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2019-10-13 18:04:18,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-13 18:04:18,534 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:04:18,535 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:04:18,538 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:04:18,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:04:18,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1190948056, now seen corresponding path program 1 times [2019-10-13 18:04:18,553 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:04:18,553 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764387424] [2019-10-13 18:04:18,554 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:18,554 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:18,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:04:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:18,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:04:18,964 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764387424] [2019-10-13 18:04:18,966 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:04:18,966 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:04:18,966 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939754328] [2019-10-13 18:04:18,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:04:18,972 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:04:18,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:04:18,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:04:18,991 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 5 states. [2019-10-13 18:04:25,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:04:25,656 INFO L93 Difference]: Finished difference Result 1513 states and 2781 transitions. [2019-10-13 18:04:25,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:04:25,658 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2019-10-13 18:04:25,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:04:25,692 INFO L225 Difference]: With dead ends: 1513 [2019-10-13 18:04:25,693 INFO L226 Difference]: Without dead ends: 1007 [2019-10-13 18:04:25,706 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:04:25,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2019-10-13 18:04:25,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 999. [2019-10-13 18:04:25,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2019-10-13 18:04:25,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1377 transitions. [2019-10-13 18:04:25,860 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1377 transitions. Word has length 32 [2019-10-13 18:04:25,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:04:25,862 INFO L462 AbstractCegarLoop]: Abstraction has 999 states and 1377 transitions. [2019-10-13 18:04:25,862 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:04:25,863 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1377 transitions. [2019-10-13 18:04:25,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-10-13 18:04:25,874 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:04:25,875 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:04:25,875 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:04:25,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:04:25,877 INFO L82 PathProgramCache]: Analyzing trace with hash 679417420, now seen corresponding path program 1 times [2019-10-13 18:04:25,877 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:04:25,877 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304003761] [2019-10-13 18:04:25,877 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:25,877 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:25,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:04:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:04:26,377 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304003761] [2019-10-13 18:04:26,378 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764039270] [2019-10-13 18:04:26,378 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 [2019-10-13 18:04:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:26,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 18:04:26,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:04:26,600 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:04:26,601 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:04:26,601 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2019-10-13 18:04:26,602 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15400322] [2019-10-13 18:04:26,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:04:26,606 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:04:26,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:04:26,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-13 18:04:26,607 INFO L87 Difference]: Start difference. First operand 999 states and 1377 transitions. Second operand 5 states. [2019-10-13 18:04:33,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:04:33,062 INFO L93 Difference]: Finished difference Result 2330 states and 3155 transitions. [2019-10-13 18:04:33,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:04:33,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2019-10-13 18:04:33,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:04:33,082 INFO L225 Difference]: With dead ends: 2330 [2019-10-13 18:04:33,083 INFO L226 Difference]: Without dead ends: 1337 [2019-10-13 18:04:33,086 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2019-10-13 18:04:33,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2019-10-13 18:04:33,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1324. [2019-10-13 18:04:33,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1324 states. [2019-10-13 18:04:33,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1735 transitions. [2019-10-13 18:04:33,144 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1735 transitions. Word has length 101 [2019-10-13 18:04:33,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:04:33,145 INFO L462 AbstractCegarLoop]: Abstraction has 1324 states and 1735 transitions. [2019-10-13 18:04:33,146 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:04:33,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1735 transitions. [2019-10-13 18:04:33,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-13 18:04:33,156 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:04:33,156 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:04:33,360 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:04:33,361 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:04:33,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:04:33,362 INFO L82 PathProgramCache]: Analyzing trace with hash -603532513, now seen corresponding path program 1 times [2019-10-13 18:04:33,362 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:04:33,363 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319589126] [2019-10-13 18:04:33,363 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:33,364 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:33,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:04:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:33,636 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:04:33,637 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319589126] [2019-10-13 18:04:33,637 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:04:33,637 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:04:33,646 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810493476] [2019-10-13 18:04:33,648 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:04:33,648 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:04:33,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:04:33,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:04:33,649 INFO L87 Difference]: Start difference. First operand 1324 states and 1735 transitions. Second operand 9 states. [2019-10-13 18:04:40,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:04:40,204 INFO L93 Difference]: Finished difference Result 3952 states and 5514 transitions. [2019-10-13 18:04:40,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 18:04:40,207 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2019-10-13 18:04:40,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:04:40,229 INFO L225 Difference]: With dead ends: 3952 [2019-10-13 18:04:40,230 INFO L226 Difference]: Without dead ends: 2941 [2019-10-13 18:04:40,233 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-10-13 18:04:40,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2941 states. [2019-10-13 18:04:40,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2941 to 2604. [2019-10-13 18:04:40,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2604 states. [2019-10-13 18:04:40,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 3401 transitions. [2019-10-13 18:04:40,320 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 3401 transitions. Word has length 106 [2019-10-13 18:04:40,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:04:40,321 INFO L462 AbstractCegarLoop]: Abstraction has 2604 states and 3401 transitions. [2019-10-13 18:04:40,321 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:04:40,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 3401 transitions. [2019-10-13 18:04:40,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-13 18:04:40,322 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:04:40,323 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:04:40,323 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:04:40,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:04:40,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1976934134, now seen corresponding path program 1 times [2019-10-13 18:04:40,324 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:04:40,324 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837976461] [2019-10-13 18:04:40,324 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:40,324 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:04:40,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:04:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:04:40,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837976461] [2019-10-13 18:04:40,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623041190] [2019-10-13 18:04:40,581 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 [2019-10-13 18:04:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:04:40,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-13 18:04:40,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:04:40,744 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:04:40,744 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:04:40,745 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2019-10-13 18:04:40,745 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254530249] [2019-10-13 18:04:40,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 18:04:40,746 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:04:40,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 18:04:40,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-10-13 18:04:40,747 INFO L87 Difference]: Start difference. First operand 2604 states and 3401 transitions. Second operand 13 states.