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_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 21:59:03,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 21:59:03,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 21:59:03,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 21:59:03,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 21:59:03,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 21:59:03,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 21:59:03,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 21:59:03,415 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 21:59:03,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 21:59:03,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 21:59:03,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 21:59:03,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 21:59:03,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 21:59:03,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 21:59:03,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 21:59:03,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 21:59:03,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 21:59:03,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 21:59:03,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 21:59:03,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 21:59:03,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 21:59:03,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 21:59:03,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 21:59:03,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 21:59:03,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 21:59:03,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 21:59:03,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 21:59:03,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 21:59:03,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 21:59:03,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 21:59:03,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 21:59:03,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 21:59:03,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 21:59:03,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 21:59:03,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 21:59:03,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 21:59:03,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 21:59:03,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 21:59:03,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 21:59:03,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 21:59:03,455 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 21:59:03,468 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 21:59:03,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 21:59:03,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 21:59:03,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 21:59:03,470 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 21:59:03,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 21:59:03,470 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 21:59:03,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 21:59:03,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 21:59:03,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 21:59:03,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 21:59:03,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 21:59:03,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 21:59:03,472 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 21:59:03,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 21:59:03,472 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 21:59:03,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 21:59:03,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 21:59:03,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 21:59:03,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 21:59:03,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 21:59:03,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 21:59:03,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 21:59:03,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 21:59:03,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 21:59:03,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 21:59:03,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 21:59:03,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 21:59:03,475 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 21:59:03,773 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 21:59:03,786 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 21:59:03,790 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 21:59:03,791 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 21:59:03,792 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 21:59:03,793 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label27.c [2019-10-14 21:59:03,868 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c1598ce1/4fe5f82a34074f7d865f58fa6c10e927/FLAG2638ca70e [2019-10-14 21:59:04,522 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 21:59:04,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label27.c [2019-10-14 21:59:04,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c1598ce1/4fe5f82a34074f7d865f58fa6c10e927/FLAG2638ca70e [2019-10-14 21:59:04,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c1598ce1/4fe5f82a34074f7d865f58fa6c10e927 [2019-10-14 21:59:04,803 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 21:59:04,805 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 21:59:04,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 21:59:04,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 21:59:04,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 21:59:04,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:59:04" (1/1) ... [2019-10-14 21:59:04,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0c74a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:04, skipping insertion in model container [2019-10-14 21:59:04,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:59:04" (1/1) ... [2019-10-14 21:59:04,824 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 21:59:04,882 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 21:59:05,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 21:59:05,573 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 21:59:05,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 21:59:05,747 INFO L192 MainTranslator]: Completed translation [2019-10-14 21:59:05,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:05 WrapperNode [2019-10-14 21:59:05,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 21:59:05,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 21:59:05,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 21:59:05,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 21:59:05,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:05" (1/1) ... [2019-10-14 21:59:05,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:05" (1/1) ... [2019-10-14 21:59:05,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:05" (1/1) ... [2019-10-14 21:59:05,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:05" (1/1) ... [2019-10-14 21:59:05,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:05" (1/1) ... [2019-10-14 21:59:05,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:05" (1/1) ... [2019-10-14 21:59:05,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:05" (1/1) ... [2019-10-14 21:59:05,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 21:59:05,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 21:59:05,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 21:59:05,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 21:59:05,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:05" (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 21:59:05,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 21:59:05,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 21:59:06,000 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 21:59:06,000 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 21:59:06,000 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 21:59:06,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 21:59:06,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 21:59:06,002 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 21:59:06,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 21:59:06,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 21:59:06,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 21:59:07,996 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 21:59:07,997 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 21:59:07,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:59:07 BoogieIcfgContainer [2019-10-14 21:59:07,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 21:59:08,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 21:59:08,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 21:59:08,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 21:59:08,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:59:04" (1/3) ... [2019-10-14 21:59:08,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e88d229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:59:08, skipping insertion in model container [2019-10-14 21:59:08,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:59:05" (2/3) ... [2019-10-14 21:59:08,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e88d229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:59:08, skipping insertion in model container [2019-10-14 21:59:08,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:59:07" (3/3) ... [2019-10-14 21:59:08,008 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label27.c [2019-10-14 21:59:08,018 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 21:59:08,027 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 21:59:08,040 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 21:59:08,071 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 21:59:08,072 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 21:59:08,073 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 21:59:08,073 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 21:59:08,073 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 21:59:08,073 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 21:59:08,073 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 21:59:08,074 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 21:59:08,147 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-10-14 21:59:08,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-14 21:59:08,157 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:08,158 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] [2019-10-14 21:59:08,160 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:08,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:08,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1647483275, now seen corresponding path program 1 times [2019-10-14 21:59:08,179 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:08,180 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291374509] [2019-10-14 21:59:08,180 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:08,180 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:08,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:08,589 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 21:59:08,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291374509] [2019-10-14 21:59:08,591 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 21:59:08,591 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 21:59:08,592 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881342265] [2019-10-14 21:59:08,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 21:59:08,597 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:08,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 21:59:08,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 21:59:08,614 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 5 states. [2019-10-14 21:59:12,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:59:12,081 INFO L93 Difference]: Finished difference Result 1005 states and 1792 transitions. [2019-10-14 21:59:12,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 21:59:12,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2019-10-14 21:59:12,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:59:12,110 INFO L225 Difference]: With dead ends: 1005 [2019-10-14 21:59:12,110 INFO L226 Difference]: Without dead ends: 629 [2019-10-14 21:59:12,121 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 21:59:12,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-14 21:59:12,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 424. [2019-10-14 21:59:12,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 424 states. [2019-10-14 21:59:12,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 609 transitions. [2019-10-14 21:59:12,232 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 609 transitions. Word has length 48 [2019-10-14 21:59:12,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:59:12,233 INFO L462 AbstractCegarLoop]: Abstraction has 424 states and 609 transitions. [2019-10-14 21:59:12,233 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 21:59:12,233 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 609 transitions. [2019-10-14 21:59:12,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-10-14 21:59:12,239 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:12,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:12,240 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:12,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:12,240 INFO L82 PathProgramCache]: Analyzing trace with hash 2032953802, now seen corresponding path program 1 times [2019-10-14 21:59:12,240 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:12,241 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367974519] [2019-10-14 21:59:12,241 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:12,241 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:12,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:12,576 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:59:12,577 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367974519] [2019-10-14 21:59:12,577 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 21:59:12,577 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 21:59:12,577 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637733013] [2019-10-14 21:59:12,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 21:59:12,580 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:12,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 21:59:12,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-14 21:59:12,581 INFO L87 Difference]: Start difference. First operand 424 states and 609 transitions. Second operand 9 states. [2019-10-14 21:59:15,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:59:15,824 INFO L93 Difference]: Finished difference Result 1645 states and 2450 transitions. [2019-10-14 21:59:15,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 21:59:15,830 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 120 [2019-10-14 21:59:15,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:59:15,839 INFO L225 Difference]: With dead ends: 1645 [2019-10-14 21:59:15,839 INFO L226 Difference]: Without dead ends: 1227 [2019-10-14 21:59:15,842 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-10-14 21:59:15,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2019-10-14 21:59:15,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1198. [2019-10-14 21:59:15,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1198 states. [2019-10-14 21:59:15,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1680 transitions. [2019-10-14 21:59:15,911 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1680 transitions. Word has length 120 [2019-10-14 21:59:15,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:59:15,912 INFO L462 AbstractCegarLoop]: Abstraction has 1198 states and 1680 transitions. [2019-10-14 21:59:15,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 21:59:15,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1680 transitions. [2019-10-14 21:59:15,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-14 21:59:15,916 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:15,916 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:15,916 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:15,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:15,917 INFO L82 PathProgramCache]: Analyzing trace with hash 758583974, now seen corresponding path program 1 times [2019-10-14 21:59:15,917 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:15,917 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943662932] [2019-10-14 21:59:15,918 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:15,918 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:15,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:16,176 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:59:16,176 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943662932] [2019-10-14 21:59:16,176 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040986910] [2019-10-14 21:59:16,177 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 21:59:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:16,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 21:59:16,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:59:16,384 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:59:16,384 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:59:16,385 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-14 21:59:16,385 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272551194] [2019-10-14 21:59:16,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 21:59:16,388 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:16,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 21:59:16,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 21:59:16,395 INFO L87 Difference]: Start difference. First operand 1198 states and 1680 transitions. Second operand 3 states. [2019-10-14 21:59:17,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:59:17,463 INFO L93 Difference]: Finished difference Result 2782 states and 3940 transitions. [2019-10-14 21:59:17,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 21:59:17,464 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2019-10-14 21:59:17,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:59:17,476 INFO L225 Difference]: With dead ends: 2782 [2019-10-14 21:59:17,476 INFO L226 Difference]: Without dead ends: 1590 [2019-10-14 21:59:17,479 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 126 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 21:59:17,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2019-10-14 21:59:17,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1581. [2019-10-14 21:59:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2019-10-14 21:59:17,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2221 transitions. [2019-10-14 21:59:17,549 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2221 transitions. Word has length 122 [2019-10-14 21:59:17,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:59:17,550 INFO L462 AbstractCegarLoop]: Abstraction has 1581 states and 2221 transitions. [2019-10-14 21:59:17,550 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 21:59:17,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2221 transitions. [2019-10-14 21:59:17,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-14 21:59:17,553 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:17,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:17,759 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:17,759 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:17,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:17,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1062949639, now seen corresponding path program 1 times [2019-10-14 21:59:17,760 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:17,760 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773488719] [2019-10-14 21:59:17,760 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:17,760 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:17,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:59:18,025 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773488719] [2019-10-14 21:59:18,025 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 21:59:18,026 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 21:59:18,026 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821844603] [2019-10-14 21:59:18,027 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 21:59:18,028 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:18,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 21:59:18,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-14 21:59:18,029 INFO L87 Difference]: Start difference. First operand 1581 states and 2221 transitions. Second operand 7 states. [2019-10-14 21:59:20,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:59:20,649 INFO L93 Difference]: Finished difference Result 4769 states and 7030 transitions. [2019-10-14 21:59:20,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 21:59:20,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2019-10-14 21:59:20,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:59:20,670 INFO L225 Difference]: With dead ends: 4769 [2019-10-14 21:59:20,670 INFO L226 Difference]: Without dead ends: 3194 [2019-10-14 21:59:20,676 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 21:59:20,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2019-10-14 21:59:20,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2582. [2019-10-14 21:59:20,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2582 states. [2019-10-14 21:59:20,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2582 states to 2582 states and 3506 transitions. [2019-10-14 21:59:20,774 INFO L78 Accepts]: Start accepts. Automaton has 2582 states and 3506 transitions. Word has length 123 [2019-10-14 21:59:20,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:59:20,775 INFO L462 AbstractCegarLoop]: Abstraction has 2582 states and 3506 transitions. [2019-10-14 21:59:20,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 21:59:20,776 INFO L276 IsEmpty]: Start isEmpty. Operand 2582 states and 3506 transitions. [2019-10-14 21:59:20,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-14 21:59:20,781 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:20,782 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:20,783 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:20,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:20,783 INFO L82 PathProgramCache]: Analyzing trace with hash 669937364, now seen corresponding path program 1 times [2019-10-14 21:59:20,784 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:20,785 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807049643] [2019-10-14 21:59:20,785 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:20,786 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:20,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 37 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:59:21,101 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807049643] [2019-10-14 21:59:21,101 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782769591] [2019-10-14 21:59:21,101 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 21:59:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:21,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 21:59:21,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:59:21,287 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:59:21,287 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:59:21,288 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2019-10-14 21:59:21,288 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69612170] [2019-10-14 21:59:21,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 21:59:21,290 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:21,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 21:59:21,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 21:59:21,291 INFO L87 Difference]: Start difference. First operand 2582 states and 3506 transitions. Second operand 3 states. [2019-10-14 21:59:22,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:59:22,455 INFO L93 Difference]: Finished difference Result 6527 states and 9114 transitions. [2019-10-14 21:59:22,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 21:59:22,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 179 [2019-10-14 21:59:22,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:59:22,480 INFO L225 Difference]: With dead ends: 6527 [2019-10-14 21:59:22,480 INFO L226 Difference]: Without dead ends: 3951 [2019-10-14 21:59:22,488 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 21:59:22,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3951 states. [2019-10-14 21:59:22,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3951 to 3946. [2019-10-14 21:59:22,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3946 states. [2019-10-14 21:59:22,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3946 states to 3946 states and 5383 transitions. [2019-10-14 21:59:22,601 INFO L78 Accepts]: Start accepts. Automaton has 3946 states and 5383 transitions. Word has length 179 [2019-10-14 21:59:22,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:59:22,604 INFO L462 AbstractCegarLoop]: Abstraction has 3946 states and 5383 transitions. [2019-10-14 21:59:22,604 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 21:59:22,605 INFO L276 IsEmpty]: Start isEmpty. Operand 3946 states and 5383 transitions. [2019-10-14 21:59:22,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-14 21:59:22,609 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:22,610 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, 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] [2019-10-14 21:59:22,816 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:22,816 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:22,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:22,816 INFO L82 PathProgramCache]: Analyzing trace with hash -935815360, now seen corresponding path program 1 times [2019-10-14 21:59:22,817 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:22,817 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120634829] [2019-10-14 21:59:22,817 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:22,817 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:22,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:22,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:22,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:23,133 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 21:59:23,134 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120634829] [2019-10-14 21:59:23,134 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405018219] [2019-10-14 21:59:23,137 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 21:59:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:23,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 21:59:23,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:59:23,338 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-14 21:59:23,339 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:59:23,339 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-10-14 21:59:23,340 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223930374] [2019-10-14 21:59:23,340 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 21:59:23,340 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:23,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 21:59:23,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-14 21:59:23,341 INFO L87 Difference]: Start difference. First operand 3946 states and 5383 transitions. Second operand 3 states. [2019-10-14 21:59:24,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:59:24,423 INFO L93 Difference]: Finished difference Result 7895 states and 10813 transitions. [2019-10-14 21:59:24,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 21:59:24,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2019-10-14 21:59:24,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:59:24,445 INFO L225 Difference]: With dead ends: 7895 [2019-10-14 21:59:24,446 INFO L226 Difference]: Without dead ends: 3955 [2019-10-14 21:59:24,458 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-14 21:59:24,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2019-10-14 21:59:24,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3942. [2019-10-14 21:59:24,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3942 states. [2019-10-14 21:59:24,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 5187 transitions. [2019-10-14 21:59:24,553 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 5187 transitions. Word has length 191 [2019-10-14 21:59:24,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:59:24,554 INFO L462 AbstractCegarLoop]: Abstraction has 3942 states and 5187 transitions. [2019-10-14 21:59:24,554 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 21:59:24,554 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 5187 transitions. [2019-10-14 21:59:24,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-14 21:59:24,558 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:24,559 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, 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] [2019-10-14 21:59:24,762 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:24,763 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:24,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:24,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1046680151, now seen corresponding path program 1 times [2019-10-14 21:59:24,763 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:24,764 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461102983] [2019-10-14 21:59:24,764 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:24,764 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:24,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 21:59:25,117 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461102983] [2019-10-14 21:59:25,117 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94551663] [2019-10-14 21:59:25,118 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 21:59:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:25,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 21:59:25,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:59:25,269 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-10-14 21:59:25,269 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:59:25,270 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2019-10-14 21:59:25,270 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066277998] [2019-10-14 21:59:25,270 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 21:59:25,271 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:25,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 21:59:25,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-14 21:59:25,271 INFO L87 Difference]: Start difference. First operand 3942 states and 5187 transitions. Second operand 3 states. [2019-10-14 21:59:26,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:59:26,365 INFO L93 Difference]: Finished difference Result 10166 states and 13770 transitions. [2019-10-14 21:59:26,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 21:59:26,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2019-10-14 21:59:26,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:59:26,392 INFO L225 Difference]: With dead ends: 10166 [2019-10-14 21:59:26,393 INFO L226 Difference]: Without dead ends: 6230 [2019-10-14 21:59:26,405 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-14 21:59:26,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6230 states. [2019-10-14 21:59:26,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6230 to 6228. [2019-10-14 21:59:26,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6228 states. [2019-10-14 21:59:26,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 8045 transitions. [2019-10-14 21:59:26,551 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 8045 transitions. Word has length 204 [2019-10-14 21:59:26,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:59:26,552 INFO L462 AbstractCegarLoop]: Abstraction has 6228 states and 8045 transitions. [2019-10-14 21:59:26,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 21:59:26,552 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 8045 transitions. [2019-10-14 21:59:26,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-10-14 21:59:26,557 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:26,557 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, 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] [2019-10-14 21:59:26,760 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:26,761 INFO L410 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:26,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:26,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1919024346, now seen corresponding path program 1 times [2019-10-14 21:59:26,762 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:26,762 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713177615] [2019-10-14 21:59:26,762 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:26,762 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:26,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-14 21:59:27,000 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713177615] [2019-10-14 21:59:27,000 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329691604] [2019-10-14 21:59:27,001 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 21:59:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:27,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 21:59:27,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:59:27,150 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-10-14 21:59:27,152 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:59:27,153 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2019-10-14 21:59:27,153 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074596433] [2019-10-14 21:59:27,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 21:59:27,154 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:27,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 21:59:27,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 21:59:27,159 INFO L87 Difference]: Start difference. First operand 6228 states and 8045 transitions. Second operand 3 states. [2019-10-14 21:59:28,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:59:28,201 INFO L93 Difference]: Finished difference Result 14922 states and 19845 transitions. [2019-10-14 21:59:28,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 21:59:28,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2019-10-14 21:59:28,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:59:28,243 INFO L225 Difference]: With dead ends: 14922 [2019-10-14 21:59:28,243 INFO L226 Difference]: Without dead ends: 8700 [2019-10-14 21:59:28,258 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 214 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 21:59:28,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8700 states. [2019-10-14 21:59:28,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8700 to 8324. [2019-10-14 21:59:28,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8324 states. [2019-10-14 21:59:28,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8324 states to 8324 states and 10737 transitions. [2019-10-14 21:59:28,541 INFO L78 Accepts]: Start accepts. Automaton has 8324 states and 10737 transitions. Word has length 209 [2019-10-14 21:59:28,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:59:28,542 INFO L462 AbstractCegarLoop]: Abstraction has 8324 states and 10737 transitions. [2019-10-14 21:59:28,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 21:59:28,542 INFO L276 IsEmpty]: Start isEmpty. Operand 8324 states and 10737 transitions. [2019-10-14 21:59:28,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-10-14 21:59:28,554 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:28,555 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, 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] [2019-10-14 21:59:28,761 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:28,761 INFO L410 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:28,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:28,762 INFO L82 PathProgramCache]: Analyzing trace with hash 259131254, now seen corresponding path program 1 times [2019-10-14 21:59:28,764 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:28,771 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239564206] [2019-10-14 21:59:28,771 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:28,772 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:28,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:29,005 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-10-14 21:59:29,005 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239564206] [2019-10-14 21:59:29,006 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685390061] [2019-10-14 21:59:29,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:29,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 21:59:29,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:59:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-10-14 21:59:29,137 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:59:29,137 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2019-10-14 21:59:29,137 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126496256] [2019-10-14 21:59:29,138 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 21:59:29,138 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:29,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 21:59:29,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 21:59:29,139 INFO L87 Difference]: Start difference. First operand 8324 states and 10737 transitions. Second operand 3 states. [2019-10-14 21:59:30,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:59:30,450 INFO L93 Difference]: Finished difference Result 17783 states and 23283 transitions. [2019-10-14 21:59:30,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 21:59:30,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2019-10-14 21:59:30,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:59:30,478 INFO L225 Difference]: With dead ends: 17783 [2019-10-14 21:59:30,478 INFO L226 Difference]: Without dead ends: 9465 [2019-10-14 21:59:30,495 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 242 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 21:59:30,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9465 states. [2019-10-14 21:59:30,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9465 to 9465. [2019-10-14 21:59:30,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9465 states. [2019-10-14 21:59:30,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9465 states to 9465 states and 12231 transitions. [2019-10-14 21:59:30,682 INFO L78 Accepts]: Start accepts. Automaton has 9465 states and 12231 transitions. Word has length 237 [2019-10-14 21:59:30,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:59:30,683 INFO L462 AbstractCegarLoop]: Abstraction has 9465 states and 12231 transitions. [2019-10-14 21:59:30,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 21:59:30,683 INFO L276 IsEmpty]: Start isEmpty. Operand 9465 states and 12231 transitions. [2019-10-14 21:59:30,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-10-14 21:59:30,695 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:30,695 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 21:59:30,899 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:30,900 INFO L410 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:30,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:30,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1903102919, now seen corresponding path program 1 times [2019-10-14 21:59:30,900 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:30,900 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85044736] [2019-10-14 21:59:30,901 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:30,901 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:30,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:31,212 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 21:59:31,212 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85044736] [2019-10-14 21:59:31,212 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734746928] [2019-10-14 21:59:31,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:31,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-14 21:59:31,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:59:31,469 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 21:59:31,470 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 21:59:31,472 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:31,476 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 21:59:31,492 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 21:59:31,493 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 21:59:31,494 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 21:59:31,495 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 21:59:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 21:59:31,763 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 21:59:31,764 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2019-10-14 21:59:31,764 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270804330] [2019-10-14 21:59:31,765 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 21:59:31,765 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:31,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 21:59:31,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-10-14 21:59:31,765 INFO L87 Difference]: Start difference. First operand 9465 states and 12231 transitions. Second operand 13 states. [2019-10-14 21:59:35,830 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2019-10-14 21:59:36,269 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-10-14 21:59:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 21:59:38,047 INFO L93 Difference]: Finished difference Result 19308 states and 25814 transitions. [2019-10-14 21:59:38,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-10-14 21:59:38,048 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 244 [2019-10-14 21:59:38,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 21:59:38,073 INFO L225 Difference]: With dead ends: 19308 [2019-10-14 21:59:38,073 INFO L226 Difference]: Without dead ends: 9655 [2019-10-14 21:59:38,092 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 253 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=466, Invalid=1886, Unknown=0, NotChecked=0, Total=2352 [2019-10-14 21:59:38,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9655 states. [2019-10-14 21:59:38,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9655 to 8773. [2019-10-14 21:59:38,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8773 states. [2019-10-14 21:59:38,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8773 states to 8773 states and 10618 transitions. [2019-10-14 21:59:38,291 INFO L78 Accepts]: Start accepts. Automaton has 8773 states and 10618 transitions. Word has length 244 [2019-10-14 21:59:38,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 21:59:38,292 INFO L462 AbstractCegarLoop]: Abstraction has 8773 states and 10618 transitions. [2019-10-14 21:59:38,292 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-14 21:59:38,292 INFO L276 IsEmpty]: Start isEmpty. Operand 8773 states and 10618 transitions. [2019-10-14 21:59:38,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2019-10-14 21:59:38,304 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 21:59:38,304 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:59:38,508 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:38,508 INFO L410 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 21:59:38,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 21:59:38,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1030527620, now seen corresponding path program 1 times [2019-10-14 21:59:38,509 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 21:59:38,509 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971689661] [2019-10-14 21:59:38,510 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:38,510 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 21:59:38,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 21:59:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 5 proven. 149 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 21:59:39,373 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971689661] [2019-10-14 21:59:39,374 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165775598] [2019-10-14 21:59:39,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 21:59:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 21:59:39,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-14 21:59:39,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 21:59:39,658 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 21:59:39,754 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-14 21:59:39,755 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 21:59:39,755 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2019-10-14 21:59:39,755 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187832076] [2019-10-14 21:59:39,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 21:59:39,758 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 21:59:39,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 21:59:39,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2019-10-14 21:59:39,759 INFO L87 Difference]: Start difference. First operand 8773 states and 10618 transitions. Second operand 5 states.