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/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:14:30,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:14:30,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:14:30,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-14 23:14:30,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:14:30,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:14:30,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:14:30,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:14:30,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:14:30,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:14:30,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:14:30,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:14:30,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:14:30,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:14:30,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:14:30,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:14:30,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:14:30,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:14:30,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:14:30,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:14:30,126 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 23:14:30,140 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:14:30,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:14:30,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:14:30,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:14:30,145 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:14:30,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:14:30,146 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:14:30,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:14:30,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:14:30,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:14:30,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:14:30,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:14:30,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:14:30,147 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:14:30,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:14:30,148 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:14:30,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:14:30,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:14:30,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:14:30,150 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:14:30,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:14:30,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:14:30,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:14:30,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:14:30,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:14:30,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:14:30,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:14:30,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:14:30,152 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:14:30,423 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:14:30,437 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:14:30,440 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:14:30,442 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:14:30,442 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:14:30,443 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2019-10-14 23:14:30,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a674ca63f/2aeb4fb3587e4eb199887b1c3fe61c72/FLAG63111b5ea [2019-10-14 23:14:30,928 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:14:30,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2019-10-14 23:14:30,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a674ca63f/2aeb4fb3587e4eb199887b1c3fe61c72/FLAG63111b5ea [2019-10-14 23:14:31,291 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a674ca63f/2aeb4fb3587e4eb199887b1c3fe61c72 [2019-10-14 23:14:31,302 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:14:31,304 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:14:31,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:14:31,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:14:31,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:14:31,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:14:31" (1/1) ... [2019-10-14 23:14:31,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7639f8e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:31, skipping insertion in model container [2019-10-14 23:14:31,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:14:31" (1/1) ... [2019-10-14 23:14:31,321 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:14:31,351 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:14:31,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:14:31,560 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:14:31,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:14:31,697 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:14:31,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:31 WrapperNode [2019-10-14 23:14:31,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:14:31,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:14:31,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:14:31,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:14:31,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:31" (1/1) ... [2019-10-14 23:14:31,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:31" (1/1) ... [2019-10-14 23:14:31,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:31" (1/1) ... [2019-10-14 23:14:31,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:31" (1/1) ... [2019-10-14 23:14:31,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:31" (1/1) ... [2019-10-14 23:14:31,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:31" (1/1) ... [2019-10-14 23:14:31,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:31" (1/1) ... [2019-10-14 23:14:31,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:14:31,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:14:31,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:14:31,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:14:31,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:31" (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 23:14:31,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:14:31,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:14:31,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:14:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:14:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:14:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:14:31,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-14 23:14:31,791 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:14:31,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:14:31,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:14:31,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:14:31,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:14:31,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:14:31,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:14:32,185 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:14:32,186 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:14:32,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:14:32 BoogieIcfgContainer [2019-10-14 23:14:32,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:14:32,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:14:32,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:14:32,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:14:32,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:14:31" (1/3) ... [2019-10-14 23:14:32,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444dc2d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:14:32, skipping insertion in model container [2019-10-14 23:14:32,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:14:31" (2/3) ... [2019-10-14 23:14:32,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444dc2d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:14:32, skipping insertion in model container [2019-10-14 23:14:32,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:14:32" (3/3) ... [2019-10-14 23:14:32,194 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+lhb-reducer.c [2019-10-14 23:14:32,201 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:14:32,208 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-14 23:14:32,220 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-14 23:14:32,245 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:14:32,245 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:14:32,246 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:14:32,246 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:14:32,246 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:14:32,246 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:14:32,246 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:14:32,246 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:14:32,271 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-10-14 23:14:32,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-14 23:14:32,276 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:14:32,277 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:14:32,279 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:14:32,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:14:32,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1494900034, now seen corresponding path program 1 times [2019-10-14 23:14:32,291 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:14:32,291 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625188720] [2019-10-14 23:14:32,292 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:14:32,292 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:14:32,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:14:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:14:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:14:32,596 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 23:14:32,600 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625188720] [2019-10-14 23:14:32,601 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:14:32,604 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:14:32,605 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782070010] [2019-10-14 23:14:32,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:14:32,613 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:14:32,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:14:32,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:14:32,642 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2019-10-14 23:14:32,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:14:32,802 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions. [2019-10-14 23:14:32,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:14:32,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-14 23:14:32,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:14:32,814 INFO L225 Difference]: With dead ends: 56 [2019-10-14 23:14:32,814 INFO L226 Difference]: Without dead ends: 34 [2019-10-14 23:14:32,818 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:14:32,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-14 23:14:32,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2019-10-14 23:14:32,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-14 23:14:32,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2019-10-14 23:14:32,859 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 13 [2019-10-14 23:14:32,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:14:32,860 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2019-10-14 23:14:32,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:14:32,860 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2019-10-14 23:14:32,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-14 23:14:32,861 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:14:32,861 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:14:32,862 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:14:32,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:14:32,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1256853917, now seen corresponding path program 1 times [2019-10-14 23:14:32,862 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:14:32,863 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380132308] [2019-10-14 23:14:32,863 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:14:32,863 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:14:32,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:14:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:14:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:14:32,954 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 23:14:32,954 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380132308] [2019-10-14 23:14:32,955 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:14:32,955 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:14:32,955 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806081987] [2019-10-14 23:14:32,957 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:14:32,957 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:14:32,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:14:32,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:14:32,958 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 5 states. [2019-10-14 23:14:33,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:14:33,074 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2019-10-14 23:14:33,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:14:33,075 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-10-14 23:14:33,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:14:33,076 INFO L225 Difference]: With dead ends: 53 [2019-10-14 23:14:33,077 INFO L226 Difference]: Without dead ends: 51 [2019-10-14 23:14:33,078 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:14:33,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-10-14 23:14:33,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 34. [2019-10-14 23:14:33,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-14 23:14:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2019-10-14 23:14:33,086 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 14 [2019-10-14 23:14:33,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:14:33,087 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2019-10-14 23:14:33,087 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:14:33,087 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2019-10-14 23:14:33,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-14 23:14:33,088 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:14:33,088 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:14:33,089 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:14:33,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:14:33,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1192177656, now seen corresponding path program 1 times [2019-10-14 23:14:33,090 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:14:33,090 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353917710] [2019-10-14 23:14:33,090 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:14:33,090 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:14:33,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:14:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:14:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:14:33,183 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 23:14:33,183 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353917710] [2019-10-14 23:14:33,183 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:14:33,184 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:14:33,184 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355981579] [2019-10-14 23:14:33,184 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:14:33,185 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:14:33,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:14:33,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:14:33,186 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 4 states. [2019-10-14 23:14:33,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:14:33,291 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2019-10-14 23:14:33,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:14:33,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-10-14 23:14:33,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:14:33,294 INFO L225 Difference]: With dead ends: 62 [2019-10-14 23:14:33,294 INFO L226 Difference]: Without dead ends: 41 [2019-10-14 23:14:33,295 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:14:33,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-14 23:14:33,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2019-10-14 23:14:33,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-14 23:14:33,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2019-10-14 23:14:33,315 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 14 [2019-10-14 23:14:33,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:14:33,316 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2019-10-14 23:14:33,316 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:14:33,316 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2019-10-14 23:14:33,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-14 23:14:33,318 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:14:33,319 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:14:33,319 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:14:33,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:14:33,320 INFO L82 PathProgramCache]: Analyzing trace with hash -249616619, now seen corresponding path program 1 times [2019-10-14 23:14:33,320 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:14:33,321 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530080945] [2019-10-14 23:14:33,321 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:14:33,322 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:14:33,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:14:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:14:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:14:33,407 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 23:14:33,407 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530080945] [2019-10-14 23:14:33,413 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:14:33,413 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:14:33,414 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336736810] [2019-10-14 23:14:33,414 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:14:33,414 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:14:33,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:14:33,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:14:33,415 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 4 states. [2019-10-14 23:14:33,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:14:33,497 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2019-10-14 23:14:33,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:14:33,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-10-14 23:14:33,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:14:33,499 INFO L225 Difference]: With dead ends: 56 [2019-10-14 23:14:33,499 INFO L226 Difference]: Without dead ends: 35 [2019-10-14 23:14:33,500 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:14:33,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-14 23:14:33,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2019-10-14 23:14:33,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-14 23:14:33,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2019-10-14 23:14:33,508 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 15 [2019-10-14 23:14:33,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:14:33,509 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2019-10-14 23:14:33,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:14:33,509 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2019-10-14 23:14:33,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-14 23:14:33,510 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:14:33,510 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] [2019-10-14 23:14:33,511 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:14:33,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:14:33,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1739668830, now seen corresponding path program 1 times [2019-10-14 23:14:33,511 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:14:33,512 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770338580] [2019-10-14 23:14:33,513 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:14:33,513 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:14:33,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:14:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:14:34,180 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 40 [2019-10-14 23:14:34,442 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 44 [2019-10-14 23:14:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:14:34,492 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 23:14:34,493 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770338580] [2019-10-14 23:14:34,493 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:14:34,493 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:14:34,494 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204911244] [2019-10-14 23:14:34,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:14:34,494 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:14:34,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:14:34,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:14:34,496 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 10 states. [2019-10-14 23:14:34,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:14:34,946 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2019-10-14 23:14:34,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:14:34,948 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-10-14 23:14:34,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:14:34,948 INFO L225 Difference]: With dead ends: 47 [2019-10-14 23:14:34,949 INFO L226 Difference]: Without dead ends: 31 [2019-10-14 23:14:34,949 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:14:34,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-14 23:14:34,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-10-14 23:14:34,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-14 23:14:34,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2019-10-14 23:14:34,958 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 20 [2019-10-14 23:14:34,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:14:34,958 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2019-10-14 23:14:34,958 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:14:34,959 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2019-10-14 23:14:34,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-14 23:14:34,959 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:14:34,960 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] [2019-10-14 23:14:34,960 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:14:34,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:14:34,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1253973443, now seen corresponding path program 1 times [2019-10-14 23:14:34,961 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:14:34,961 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095736152] [2019-10-14 23:14:34,961 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:14:34,963 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:14:34,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:14:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:14:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:14:35,063 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 23:14:35,063 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095736152] [2019-10-14 23:14:35,063 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:14:35,064 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:14:35,064 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085137561] [2019-10-14 23:14:35,065 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:14:35,066 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:14:35,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:14:35,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:14:35,067 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 7 states. [2019-10-14 23:14:35,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:14:35,193 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2019-10-14 23:14:35,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:14:35,194 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2019-10-14 23:14:35,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:14:35,195 INFO L225 Difference]: With dead ends: 44 [2019-10-14 23:14:35,195 INFO L226 Difference]: Without dead ends: 42 [2019-10-14 23:14:35,195 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:14:35,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-14 23:14:35,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 28. [2019-10-14 23:14:35,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-14 23:14:35,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2019-10-14 23:14:35,202 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 21 [2019-10-14 23:14:35,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:14:35,202 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2019-10-14 23:14:35,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:14:35,202 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2019-10-14 23:14:35,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-14 23:14:35,203 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:14:35,203 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:14:35,204 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:14:35,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:14:35,204 INFO L82 PathProgramCache]: Analyzing trace with hash 899200671, now seen corresponding path program 1 times [2019-10-14 23:14:35,204 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:14:35,204 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427417848] [2019-10-14 23:14:35,205 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:14:35,205 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:14:35,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:14:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:14:37,605 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (div (+ c_main_~main__index1~0 (- 1)) 4294967296))) (and (<= c_main_~main__index1~0 (+ (* 4294967296 .cse0) 100000)) (let ((.cse2 (div c_main_~main__index1~0 4294967296)) (.cse1 (div c_main_~main__index2~0 4294967296))) (or (<= (+ c_main_~main__index2~0 4294867298) (* 4294967296 .cse1)) (<= (+ (* 4294967296 .cse2) 4294967297) c_main_~main__index1~0) (<= c_main_~main__index1~0 (+ (* 4294967296 (div (+ (* .cse2 4294967296) (* c_main_~main__index1~0 4294967294) (* .cse0 4294967296) (* c_main_~main__index2~0 (- 4294967295)) (* .cse1 (- 4294967296)) 429483844598116) 18446744073709551616)) c_main_~main__index2~0 1)))))) is different from false [2019-10-14 23:14:42,037 WARN L191 SmtUtils]: Spent 4.17 s on a formula simplification that was a NOOP. DAG size: 29 [2019-10-14 23:14:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:14:46,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:14:46,760 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427417848] [2019-10-14 23:14:46,761 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627056748] [2019-10-14 23:14:46,761 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 23:14:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:14:46,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-14 23:14:46,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:14:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:14:55,029 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:14:55,030 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4] total 12 [2019-10-14 23:14:55,030 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779130686] [2019-10-14 23:14:55,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:14:55,031 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:14:55,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:14:55,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=79, Unknown=6, NotChecked=18, Total=132 [2019-10-14 23:14:55,032 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 12 states.