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/Problem16_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 18:06:00,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 18:06:00,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 18:06:00,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 18:06:00,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 18:06:00,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 18:06:00,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 18:06:00,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 18:06:00,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 18:06:00,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 18:06:00,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 18:06:00,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 18:06:00,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 18:06:00,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 18:06:00,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 18:06:00,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 18:06:00,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 18:06:00,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 18:06:00,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 18:06:00,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 18:06:00,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 18:06:00,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 18:06:00,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 18:06:00,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 18:06:00,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 18:06:00,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 18:06:00,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 18:06:00,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 18:06:00,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 18:06:00,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 18:06:00,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 18:06:00,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 18:06:00,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 18:06:00,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 18:06:00,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 18:06:00,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 18:06:00,846 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 18:06:00,868 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 18:06:00,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 18:06:00,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 18:06:00,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 18:06:00,871 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 18:06:00,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 18:06:00,871 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 18:06:00,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 18:06:00,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 18:06:00,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 18:06:00,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 18:06:00,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 18:06:00,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 18:06:00,874 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 18:06:00,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 18:06:00,874 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 18:06:00,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 18:06:00,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 18:06:00,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 18:06:00,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 18:06:00,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 18:06:00,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:06:00,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 18:06:00,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 18:06:00,876 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 18:06:00,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 18:06:00,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 18:06:00,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 18:06:00,877 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 18:06:01,203 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 18:06:01,222 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 18:06:01,225 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 18:06:01,227 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 18:06:01,227 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 18:06:01,228 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label50.c [2019-10-13 18:06:01,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8d13ad3f/281445e703bc4cc4a415ee049b8d9055/FLAG1aa83a46a [2019-10-13 18:06:02,015 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 18:06:02,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label50.c [2019-10-13 18:06:02,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8d13ad3f/281445e703bc4cc4a415ee049b8d9055/FLAG1aa83a46a [2019-10-13 18:06:02,150 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8d13ad3f/281445e703bc4cc4a415ee049b8d9055 [2019-10-13 18:06:02,161 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 18:06:02,163 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 18:06:02,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 18:06:02,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 18:06:02,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 18:06:02,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:06:02" (1/1) ... [2019-10-13 18:06:02,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfc0887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:02, skipping insertion in model container [2019-10-13 18:06:02,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:06:02" (1/1) ... [2019-10-13 18:06:02,180 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 18:06:02,267 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 18:06:03,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:06:03,184 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 18:06:03,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 18:06:03,526 INFO L192 MainTranslator]: Completed translation [2019-10-13 18:06:03,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:03 WrapperNode [2019-10-13 18:06:03,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 18:06:03,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 18:06:03,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 18:06:03,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 18:06:03,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:03" (1/1) ... [2019-10-13 18:06:03,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:03" (1/1) ... [2019-10-13 18:06:03,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:03" (1/1) ... [2019-10-13 18:06:03,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:03" (1/1) ... [2019-10-13 18:06:03,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:03" (1/1) ... [2019-10-13 18:06:03,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:03" (1/1) ... [2019-10-13 18:06:03,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:03" (1/1) ... [2019-10-13 18:06:03,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 18:06:03,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 18:06:03,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 18:06:03,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 18:06:03,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 18:06:03,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 18:06:03,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 18:06:03,787 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 18:06:03,787 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 18:06:03,787 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 18:06:03,787 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 18:06:03,787 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 18:06:03,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 18:06:03,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 18:06:03,788 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 18:06:03,788 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 18:06:03,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 18:06:03,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 18:06:06,065 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 18:06:06,066 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 18:06:06,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:06:06 BoogieIcfgContainer [2019-10-13 18:06:06,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 18:06:06,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 18:06:06,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 18:06:06,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 18:06:06,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:06:02" (1/3) ... [2019-10-13 18:06:06,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3043a50f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:06:06, skipping insertion in model container [2019-10-13 18:06:06,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:06:03" (2/3) ... [2019-10-13 18:06:06,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3043a50f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:06:06, skipping insertion in model container [2019-10-13 18:06:06,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:06:06" (3/3) ... [2019-10-13 18:06:06,085 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label50.c [2019-10-13 18:06:06,095 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 18:06:06,109 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 18:06:06,120 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 18:06:06,156 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 18:06:06,156 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 18:06:06,157 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 18:06:06,157 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 18:06:06,157 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 18:06:06,157 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 18:06:06,157 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 18:06:06,157 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 18:06:06,215 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2019-10-13 18:06:06,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 18:06:06,222 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:06,223 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] [2019-10-13 18:06:06,225 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:06,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:06,230 INFO L82 PathProgramCache]: Analyzing trace with hash 789303234, now seen corresponding path program 1 times [2019-10-13 18:06:06,236 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:06,237 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572296360] [2019-10-13 18:06:06,237 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:06,237 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:06,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:06,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:06,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:06:06,634 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572296360] [2019-10-13 18:06:06,635 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:06:06,635 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 18:06:06,636 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867203059] [2019-10-13 18:06:06,642 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 18:06:06,642 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:06,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 18:06:06,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 18:06:06,660 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 5 states. [2019-10-13 18:06:11,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:06:11,847 INFO L93 Difference]: Finished difference Result 1530 states and 2865 transitions. [2019-10-13 18:06:11,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 18:06:11,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2019-10-13 18:06:11,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:06:11,891 INFO L225 Difference]: With dead ends: 1530 [2019-10-13 18:06:11,892 INFO L226 Difference]: Without dead ends: 1038 [2019-10-13 18:06:11,907 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:06:11,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2019-10-13 18:06:12,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031. [2019-10-13 18:06:12,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2019-10-13 18:06:12,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1751 transitions. [2019-10-13 18:06:12,073 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1751 transitions. Word has length 51 [2019-10-13 18:06:12,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:06:12,075 INFO L462 AbstractCegarLoop]: Abstraction has 1031 states and 1751 transitions. [2019-10-13 18:06:12,075 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 18:06:12,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1751 transitions. [2019-10-13 18:06:12,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 18:06:12,089 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:12,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:06:12,090 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:12,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:12,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1245214242, now seen corresponding path program 1 times [2019-10-13 18:06:12,092 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:12,092 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113327605] [2019-10-13 18:06:12,092 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:12,092 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:12,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:06:12,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113327605] [2019-10-13 18:06:12,355 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:06:12,355 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:06:12,356 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858129221] [2019-10-13 18:06:12,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:06:12,358 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:12,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:06:12,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:06:12,359 INFO L87 Difference]: Start difference. First operand 1031 states and 1751 transitions. Second operand 9 states. [2019-10-13 18:06:17,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:06:17,177 INFO L93 Difference]: Finished difference Result 3130 states and 5428 transitions. [2019-10-13 18:06:17,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 18:06:17,178 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 121 [2019-10-13 18:06:17,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:06:17,219 INFO L225 Difference]: With dead ends: 3130 [2019-10-13 18:06:17,219 INFO L226 Difference]: Without dead ends: 2105 [2019-10-13 18:06:17,225 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2019-10-13 18:06:17,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2019-10-13 18:06:17,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 2073. [2019-10-13 18:06:17,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2073 states. [2019-10-13 18:06:17,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 3396 transitions. [2019-10-13 18:06:17,343 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 3396 transitions. Word has length 121 [2019-10-13 18:06:17,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:06:17,343 INFO L462 AbstractCegarLoop]: Abstraction has 2073 states and 3396 transitions. [2019-10-13 18:06:17,344 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:06:17,344 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 3396 transitions. [2019-10-13 18:06:17,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 18:06:17,346 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:17,347 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:06:17,347 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:17,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:17,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1384987622, now seen corresponding path program 1 times [2019-10-13 18:06:17,348 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:17,348 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28032008] [2019-10-13 18:06:17,348 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:17,349 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:17,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:17,831 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:06:17,831 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28032008] [2019-10-13 18:06:17,831 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:06:17,832 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:06:17,832 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411957106] [2019-10-13 18:06:17,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:06:17,835 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:17,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:06:17,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:06:17,839 INFO L87 Difference]: Start difference. First operand 2073 states and 3396 transitions. Second operand 9 states. [2019-10-13 18:06:23,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:06:23,172 INFO L93 Difference]: Finished difference Result 7992 states and 13707 transitions. [2019-10-13 18:06:23,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 18:06:23,174 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 149 [2019-10-13 18:06:23,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:06:23,212 INFO L225 Difference]: With dead ends: 7992 [2019-10-13 18:06:23,212 INFO L226 Difference]: Without dead ends: 5925 [2019-10-13 18:06:23,219 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-10-13 18:06:23,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5925 states. [2019-10-13 18:06:23,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5925 to 5898. [2019-10-13 18:06:23,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5898 states. [2019-10-13 18:06:23,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5898 states to 5898 states and 8923 transitions. [2019-10-13 18:06:23,397 INFO L78 Accepts]: Start accepts. Automaton has 5898 states and 8923 transitions. Word has length 149 [2019-10-13 18:06:23,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:06:23,398 INFO L462 AbstractCegarLoop]: Abstraction has 5898 states and 8923 transitions. [2019-10-13 18:06:23,398 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:06:23,398 INFO L276 IsEmpty]: Start isEmpty. Operand 5898 states and 8923 transitions. [2019-10-13 18:06:23,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-13 18:06:23,401 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:23,401 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:06:23,402 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:23,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:23,402 INFO L82 PathProgramCache]: Analyzing trace with hash -992170262, now seen corresponding path program 1 times [2019-10-13 18:06:23,402 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:23,402 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985558527] [2019-10-13 18:06:23,403 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:23,403 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:23,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:06:23,704 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985558527] [2019-10-13 18:06:23,704 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 18:06:23,704 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 18:06:23,704 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094383098] [2019-10-13 18:06:23,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 18:06:23,705 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:23,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 18:06:23,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 18:06:23,706 INFO L87 Difference]: Start difference. First operand 5898 states and 8923 transitions. Second operand 9 states. [2019-10-13 18:06:27,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:06:27,386 INFO L93 Difference]: Finished difference Result 14973 states and 23283 transitions. [2019-10-13 18:06:27,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 18:06:27,387 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 189 [2019-10-13 18:06:27,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:06:27,432 INFO L225 Difference]: With dead ends: 14973 [2019-10-13 18:06:27,432 INFO L226 Difference]: Without dead ends: 9081 [2019-10-13 18:06:27,449 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2019-10-13 18:06:27,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9081 states. [2019-10-13 18:06:27,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9081 to 9011. [2019-10-13 18:06:27,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9011 states. [2019-10-13 18:06:27,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9011 states to 9011 states and 11768 transitions. [2019-10-13 18:06:27,704 INFO L78 Accepts]: Start accepts. Automaton has 9011 states and 11768 transitions. Word has length 189 [2019-10-13 18:06:27,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:06:27,705 INFO L462 AbstractCegarLoop]: Abstraction has 9011 states and 11768 transitions. [2019-10-13 18:06:27,705 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 18:06:27,705 INFO L276 IsEmpty]: Start isEmpty. Operand 9011 states and 11768 transitions. [2019-10-13 18:06:27,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2019-10-13 18:06:27,717 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:27,718 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, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 18:06:27,718 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:27,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:27,719 INFO L82 PathProgramCache]: Analyzing trace with hash -64771593, now seen corresponding path program 1 times [2019-10-13 18:06:27,719 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:27,720 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311276922] [2019-10-13 18:06:27,720 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:27,720 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:27,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:28,284 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-13 18:06:28,285 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311276922] [2019-10-13 18:06:28,285 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560857901] [2019-10-13 18:06:28,285 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:06:28,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:28,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:06:28,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:06:28,622 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2019-10-13 18:06:28,623 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-13 18:06:28,623 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-13 18:06:28,624 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277360287] [2019-10-13 18:06:28,624 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 18:06:28,625 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:28,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 18:06:28,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:06:28,625 INFO L87 Difference]: Start difference. First operand 9011 states and 11768 transitions. Second operand 3 states. [2019-10-13 18:06:31,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 18:06:31,040 INFO L93 Difference]: Finished difference Result 21065 states and 27822 transitions. [2019-10-13 18:06:31,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 18:06:31,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 370 [2019-10-13 18:06:31,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 18:06:31,106 INFO L225 Difference]: With dead ends: 21065 [2019-10-13 18:06:31,106 INFO L226 Difference]: Without dead ends: 12060 [2019-10-13 18:06:31,128 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 375 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 18:06:31,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12060 states. [2019-10-13 18:06:31,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12060 to 11382. [2019-10-13 18:06:31,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11382 states. [2019-10-13 18:06:31,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11382 states to 11382 states and 14471 transitions. [2019-10-13 18:06:31,569 INFO L78 Accepts]: Start accepts. Automaton has 11382 states and 14471 transitions. Word has length 370 [2019-10-13 18:06:31,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 18:06:31,570 INFO L462 AbstractCegarLoop]: Abstraction has 11382 states and 14471 transitions. [2019-10-13 18:06:31,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 18:06:31,571 INFO L276 IsEmpty]: Start isEmpty. Operand 11382 states and 14471 transitions. [2019-10-13 18:06:31,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2019-10-13 18:06:31,582 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 18:06:31,583 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 18:06:31,797 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:06:31,797 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 18:06:31,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 18:06:31,798 INFO L82 PathProgramCache]: Analyzing trace with hash -69990070, now seen corresponding path program 1 times [2019-10-13 18:06:31,798 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 18:06:31,798 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120494870] [2019-10-13 18:06:31,798 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:31,798 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 18:06:31,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 18:06:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:32,509 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 248 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 18:06:32,509 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120494870] [2019-10-13 18:06:32,509 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398109071] [2019-10-13 18:06:32,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 18:06:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 18:06:32,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 18:06:32,676 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 18:06:32,817 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 18:06:32,818 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-13 18:06:32,818 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-10-13 18:06:32,818 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049956825] [2019-10-13 18:06:32,820 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 18:06:32,820 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 18:06:32,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 18:06:32,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-13 18:06:32,820 INFO L87 Difference]: Start difference. First operand 11382 states and 14471 transitions. Second operand 11 states.