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/Problem11_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 21:59:30,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 21:59:30,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 21:59:30,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 21:59:30,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 21:59:30,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 21:59:30,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 21:59:30,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 21:59:30,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 21:59:30,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 21:59:30,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 21:59:30,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 21:59:30,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 21:59:30,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 21:59:30,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 21:59:30,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 21:59:30,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 21:59:30,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 21:59:30,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 21:59:30,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 21:59:30,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 21:59:30,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 21:59:30,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 21:59:30,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 21:59:30,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 21:59:30,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 21:59:30,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 21:59:30,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 21:59:30,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 21:59:30,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 21:59:30,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 21:59:30,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 21:59:30,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 21:59:30,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 21:59:30,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 21:59:30,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 21:59:30,450 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 21:59:30,463 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 21:59:30,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 21:59:30,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 21:59:30,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 21:59:30,465 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 21:59:30,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 21:59:30,466 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 21:59:30,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 21:59:30,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 21:59:30,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 21:59:30,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 21:59:30,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 21:59:30,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 21:59:30,467 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 21:59:30,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 21:59:30,468 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 21:59:30,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 21:59:30,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 21:59:30,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 21:59:30,469 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 21:59:30,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 21:59:30,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 21:59:30,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 21:59:30,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 21:59:30,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 21:59:30,470 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 21:59:30,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 21:59:30,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 21:59:30,472 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 21:59:30,755 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 21:59:30,768 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 21:59:30,772 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 21:59:30,773 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 21:59:30,773 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 21:59:30,774 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label37.c [2019-10-14 21:59:30,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40add0868/13d3160cf85747baba09a000ecffe23f/FLAG40617056c [2019-10-14 21:59:31,453 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 21:59:31,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label37.c [2019-10-14 21:59:31,467 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40add0868/13d3160cf85747baba09a000ecffe23f/FLAG40617056c [2019-10-14 21:59:31,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40add0868/13d3160cf85747baba09a000ecffe23f [2019-10-14 21:59:31,735 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 21:59:31,737 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 21:59:31,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 21:59:31,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 21:59:31,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 21:59:31,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:59:31" (1/1) ... [2019-10-14 21:59:31,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b536ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:31, skipping insertion in model container [2019-10-14 21:59:31,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:59:31" (1/1) ... [2019-10-14 21:59:31,754 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 21:59:31,807 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 21:59:32,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 21:59:32,463 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 21:59:32,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 21:59:32,800 INFO L192 MainTranslator]: Completed translation [2019-10-14 21:59:32,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:32 WrapperNode [2019-10-14 21:59:32,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 21:59:32,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 21:59:32,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 21:59:32,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 21:59:32,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:32" (1/1) ... [2019-10-14 21:59:32,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:32" (1/1) ... [2019-10-14 21:59:32,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:32" (1/1) ... [2019-10-14 21:59:32,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:32" (1/1) ... [2019-10-14 21:59:32,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:32" (1/1) ... [2019-10-14 21:59:33,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:32" (1/1) ... [2019-10-14 21:59:33,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:32" (1/1) ... [2019-10-14 21:59:33,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 21:59:33,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 21:59:33,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 21:59:33,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 21:59:33,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:32" (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 21:59:33,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 21:59:33,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 21:59:33,120 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 21:59:33,120 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 21:59:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 21:59:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 21:59:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 21:59:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 21:59:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 21:59:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 21:59:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 21:59:35,034 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 21:59:35,034 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 21:59:35,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:59:35 BoogieIcfgContainer [2019-10-14 21:59:35,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 21:59:35,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 21:59:35,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 21:59:35,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 21:59:35,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:59:31" (1/3) ... [2019-10-14 21:59:35,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203e7c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:59:35, skipping insertion in model container [2019-10-14 21:59:35,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:32" (2/3) ... [2019-10-14 21:59:35,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@203e7c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:59:35, skipping insertion in model container [2019-10-14 21:59:35,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:59:35" (3/3) ... [2019-10-14 21:59:35,047 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label37.c [2019-10-14 21:59:35,061 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 21:59:35,072 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 21:59:35,087 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 21:59:35,123 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 21:59:35,123 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 21:59:35,123 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 21:59:35,123 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 21:59:35,123 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 21:59:35,124 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 21:59:35,124 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 21:59:35,124 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 21:59:35,154 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-10-14 21:59:35,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-14 21:59:35,165 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:35,166 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, 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 21:59:35,169 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:35,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:35,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1618793274, now seen corresponding path program 1 times [2019-10-14 21:59:35,221 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:35,222 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651350128] [2019-10-14 21:59:35,222 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:35,223 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:35,223 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:35,728 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 21:59:35,730 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651350128] [2019-10-14 21:59:35,731 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 21:59:35,731 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 21:59:35,732 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507130268] [2019-10-14 21:59:35,737 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 21:59:35,738 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:35,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 21:59:35,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 21:59:35,761 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 5 states. [2019-10-14 21:59:39,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:59:39,383 INFO L93 Difference]: Finished difference Result 1006 states and 1797 transitions. [2019-10-14 21:59:39,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 21:59:39,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2019-10-14 21:59:39,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:59:39,416 INFO L225 Difference]: With dead ends: 1006 [2019-10-14 21:59:39,416 INFO L226 Difference]: Without dead ends: 630 [2019-10-14 21:59:39,426 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 [2019-10-14 21:59:39,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2019-10-14 21:59:39,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 620. [2019-10-14 21:59:39,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-14 21:59:39,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 915 transitions. [2019-10-14 21:59:39,558 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 915 transitions. Word has length 55 [2019-10-14 21:59:39,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:59:39,559 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 915 transitions. [2019-10-14 21:59:39,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 21:59:39,559 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 915 transitions. [2019-10-14 21:59:39,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-14 21:59:39,566 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:39,567 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, 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] [2019-10-14 21:59:39,567 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:39,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:39,567 INFO L82 PathProgramCache]: Analyzing trace with hash 2133526889, now seen corresponding path program 1 times [2019-10-14 21:59:39,568 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:39,568 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417985801] [2019-10-14 21:59:39,568 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:39,568 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:39,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:39,823 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:59:39,824 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417985801] [2019-10-14 21:59:39,824 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083412372] [2019-10-14 21:59:39,824 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 21:59:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:39,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 21:59:39,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:59:40,005 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:59:40,006 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:59:40,006 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-14 21:59:40,006 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249760221] [2019-10-14 21:59:40,008 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 21:59:40,009 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:40,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 21:59:40,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 21:59:40,009 INFO L87 Difference]: Start difference. First operand 620 states and 915 transitions. Second operand 3 states. [2019-10-14 21:59:41,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:59:41,095 INFO L93 Difference]: Finished difference Result 1816 states and 2718 transitions. [2019-10-14 21:59:41,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 21:59:41,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2019-10-14 21:59:41,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:59:41,103 INFO L225 Difference]: With dead ends: 1816 [2019-10-14 21:59:41,104 INFO L226 Difference]: Without dead ends: 1202 [2019-10-14 21:59:41,107 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 21:59:41,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2019-10-14 21:59:41,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1194. [2019-10-14 21:59:41,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2019-10-14 21:59:41,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1631 transitions. [2019-10-14 21:59:41,148 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1631 transitions. Word has length 128 [2019-10-14 21:59:41,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:59:41,149 INFO L462 AbstractCegarLoop]: Abstraction has 1194 states and 1631 transitions. [2019-10-14 21:59:41,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 21:59:41,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1631 transitions. [2019-10-14 21:59:41,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-14 21:59:41,155 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:41,155 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, 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] [2019-10-14 21:59:41,359 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:41,360 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:41,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:41,360 INFO L82 PathProgramCache]: Analyzing trace with hash 778986062, now seen corresponding path program 1 times [2019-10-14 21:59:41,361 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:41,361 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441999438] [2019-10-14 21:59:41,361 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:41,361 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:41,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:41,618 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:59:41,619 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441999438] [2019-10-14 21:59:41,619 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 21:59:41,619 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 21:59:41,619 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533418480] [2019-10-14 21:59:41,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 21:59:41,620 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:41,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 21:59:41,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-14 21:59:41,621 INFO L87 Difference]: Start difference. First operand 1194 states and 1631 transitions. Second operand 7 states. [2019-10-14 21:59:44,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:59:44,316 INFO L93 Difference]: Finished difference Result 3415 states and 4910 transitions. [2019-10-14 21:59:44,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 21:59:44,317 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2019-10-14 21:59:44,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:59:44,330 INFO L225 Difference]: With dead ends: 3415 [2019-10-14 21:59:44,331 INFO L226 Difference]: Without dead ends: 2227 [2019-10-14 21:59:44,335 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 21:59:44,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2019-10-14 21:59:44,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2196. [2019-10-14 21:59:44,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2196 states. [2019-10-14 21:59:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 2885 transitions. [2019-10-14 21:59:44,409 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 2885 transitions. Word has length 153 [2019-10-14 21:59:44,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:59:44,411 INFO L462 AbstractCegarLoop]: Abstraction has 2196 states and 2885 transitions. [2019-10-14 21:59:44,411 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 21:59:44,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 2885 transitions. [2019-10-14 21:59:44,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-10-14 21:59:44,419 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:44,419 INFO L380 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, 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] [2019-10-14 21:59:44,419 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:44,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:44,421 INFO L82 PathProgramCache]: Analyzing trace with hash 697486710, now seen corresponding path program 1 times [2019-10-14 21:59:44,421 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:44,421 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744672551] [2019-10-14 21:59:44,421 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:44,422 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:44,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:44,819 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-14 21:59:44,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744672551] [2019-10-14 21:59:44,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343112011] [2019-10-14 21:59:44,820 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 [2019-10-14 21:59:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:44,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 21:59:44,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:59:44,996 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-14 21:59:44,997 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:59:44,997 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-14 21:59:44,998 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804707946] [2019-10-14 21:59:44,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 21:59:44,999 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:44,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 21:59:44,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 21:59:45,000 INFO L87 Difference]: Start difference. First operand 2196 states and 2885 transitions. Second operand 3 states. [2019-10-14 21:59:46,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:59:46,054 INFO L93 Difference]: Finished difference Result 5557 states and 7539 transitions. [2019-10-14 21:59:46,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 21:59:46,054 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 213 [2019-10-14 21:59:46,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:59:46,072 INFO L225 Difference]: With dead ends: 5557 [2019-10-14 21:59:46,073 INFO L226 Difference]: Without dead ends: 3367 [2019-10-14 21:59:46,079 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 21:59:46,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2019-10-14 21:59:46,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 3351. [2019-10-14 21:59:46,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3351 states. [2019-10-14 21:59:46,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3351 states to 3351 states and 4511 transitions. [2019-10-14 21:59:46,166 INFO L78 Accepts]: Start accepts. Automaton has 3351 states and 4511 transitions. Word has length 213 [2019-10-14 21:59:46,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:59:46,167 INFO L462 AbstractCegarLoop]: Abstraction has 3351 states and 4511 transitions. [2019-10-14 21:59:46,167 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 21:59:46,167 INFO L276 IsEmpty]: Start isEmpty. Operand 3351 states and 4511 transitions. [2019-10-14 21:59:46,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-10-14 21:59:46,174 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:46,175 INFO L380 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, 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] [2019-10-14 21:59:46,383 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:46,384 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:46,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:46,384 INFO L82 PathProgramCache]: Analyzing trace with hash 158032221, now seen corresponding path program 1 times [2019-10-14 21:59:46,384 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:46,385 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271809491] [2019-10-14 21:59:46,385 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:46,385 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:46,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:46,698 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-14 21:59:46,698 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271809491] [2019-10-14 21:59:46,699 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668961547] [2019-10-14 21:59:46,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:46,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 21:59:46,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:59:46,985 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-14 21:59:46,985 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:59:46,986 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-14 21:59:46,986 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463661596] [2019-10-14 21:59:46,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 21:59:46,987 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:46,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 21:59:46,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 21:59:46,988 INFO L87 Difference]: Start difference. First operand 3351 states and 4511 transitions. Second operand 3 states. [2019-10-14 21:59:48,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:59:48,081 INFO L93 Difference]: Finished difference Result 7660 states and 10549 transitions. [2019-10-14 21:59:48,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 21:59:48,086 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2019-10-14 21:59:48,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:59:48,106 INFO L225 Difference]: With dead ends: 7660 [2019-10-14 21:59:48,107 INFO L226 Difference]: Without dead ends: 4315 [2019-10-14 21:59:48,117 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 21:59:48,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4315 states. [2019-10-14 21:59:48,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4315 to 4308. [2019-10-14 21:59:48,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4308 states. [2019-10-14 21:59:48,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4308 states to 4308 states and 5732 transitions. [2019-10-14 21:59:48,216 INFO L78 Accepts]: Start accepts. Automaton has 4308 states and 5732 transitions. Word has length 230 [2019-10-14 21:59:48,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:59:48,217 INFO L462 AbstractCegarLoop]: Abstraction has 4308 states and 5732 transitions. [2019-10-14 21:59:48,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 21:59:48,217 INFO L276 IsEmpty]: Start isEmpty. Operand 4308 states and 5732 transitions. [2019-10-14 21:59:48,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2019-10-14 21:59:48,230 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:48,230 INFO L380 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:59:48,434 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:48,434 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:48,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:48,435 INFO L82 PathProgramCache]: Analyzing trace with hash -705099007, now seen corresponding path program 1 times [2019-10-14 21:59:48,435 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:48,436 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426171114] [2019-10-14 21:59:48,436 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:48,436 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:48,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:49,250 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 5 proven. 163 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 21:59:49,251 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426171114] [2019-10-14 21:59:49,251 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663940186] [2019-10-14 21:59:49,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:49,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-14 21:59:49,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:59:49,417 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 21:59:49,520 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-14 21:59:49,520 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:59:49,520 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16 [2019-10-14 21:59:49,521 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048492630] [2019-10-14 21:59:49,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 21:59:49,522 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:49,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 21:59:49,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2019-10-14 21:59:49,523 INFO L87 Difference]: Start difference. First operand 4308 states and 5732 transitions. Second operand 5 states. [2019-10-14 21:59:51,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:59:51,128 INFO L93 Difference]: Finished difference Result 8673 states and 11648 transitions. [2019-10-14 21:59:51,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 21:59:51,131 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 294 [2019-10-14 21:59:51,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:59:51,151 INFO L225 Difference]: With dead ends: 8673 [2019-10-14 21:59:51,151 INFO L226 Difference]: Without dead ends: 4371 [2019-10-14 21:59:51,162 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2019-10-14 21:59:51,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4371 states. [2019-10-14 21:59:51,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4371 to 4350. [2019-10-14 21:59:51,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4350 states. [2019-10-14 21:59:51,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4350 states to 4350 states and 5788 transitions. [2019-10-14 21:59:51,269 INFO L78 Accepts]: Start accepts. Automaton has 4350 states and 5788 transitions. Word has length 294 [2019-10-14 21:59:51,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:59:51,270 INFO L462 AbstractCegarLoop]: Abstraction has 4350 states and 5788 transitions. [2019-10-14 21:59:51,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 21:59:51,270 INFO L276 IsEmpty]: Start isEmpty. Operand 4350 states and 5788 transitions. [2019-10-14 21:59:51,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2019-10-14 21:59:51,287 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:51,288 INFO L380 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, 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, 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] [2019-10-14 21:59:51,494 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:51,494 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:51,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:51,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1581254081, now seen corresponding path program 1 times [2019-10-14 21:59:51,495 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:51,495 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863756191] [2019-10-14 21:59:51,495 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:51,495 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:51,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 190 proven. 52 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 21:59:52,229 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863756191] [2019-10-14 21:59:52,230 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477403466] [2019-10-14 21:59:52,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:52,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-14 21:59:52,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:59:52,455 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:52,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:53,453 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_~a29~0_506 Int)) (let ((.cse1 (+ v_~a29~0_506 69157))) (let ((.cse0 (mod .cse1 299861))) (and (<= |c_old(~a29~0)| v_~a29~0_506) (<= c_~a29~0 (+ .cse0 277)) (not (= .cse0 0)) (< .cse1 0))))) (exists ((v_~a29~0_506 Int)) (let ((.cse2 (+ v_~a29~0_506 69157))) (and (<= |c_old(~a29~0)| v_~a29~0_506) (<= c_~a29~0 (+ (mod .cse2 299861) 300138)) (<= 0 .cse2)))) (exists ((v_~a29~0_506 Int)) (let ((.cse3 (mod (+ v_~a29~0_506 69157) 299861))) (and (<= |c_old(~a29~0)| v_~a29~0_506) (<= c_~a29~0 (+ .cse3 300138)) (= .cse3 0))))) is different from true [2019-10-14 21:59:56,388 WARN L191 SmtUtils]: Spent 810.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 15 [2019-10-14 21:59:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 4 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2019-10-14 21:59:56,611 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 21:59:56,611 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2019-10-14 21:59:56,611 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575841427] [2019-10-14 21:59:56,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-14 21:59:56,613 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:56,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-14 21:59:56,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=168, Unknown=2, NotChecked=26, Total=240 [2019-10-14 21:59:56,614 INFO L87 Difference]: Start difference. First operand 4350 states and 5788 transitions. Second operand 16 states.