/usr/bin/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-fb55353 [2019-11-06 21:21:12,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:21:12,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:21:12,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:21:12,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:21:12,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:21:12,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:21:12,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:21:12,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:21:12,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:21:12,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:21:12,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:21:12,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:21:12,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:21:12,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:21:12,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:21:12,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:21:12,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:21:12,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:21:12,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:21:12,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:21:12,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:21:12,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:21:12,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:21:12,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 21:21:12,854 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:21:12,855 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:21:12,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:21:12,856 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 [2019-11-06 21:21:12,870 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:21:12,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:21:12,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:21:12,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:21:12,872 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:21:12,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:21:12,872 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:21:12,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:21:12,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:21:12,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:21:12,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:21:12,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:21:12,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:21:12,873 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:21:12,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:21:12,874 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:21:12,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:21:12,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:21:12,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:21:12,874 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:21:12,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:21:12,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:21:12,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:21:12,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:21:12,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:21:12,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:21:12,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:21:12,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:21:12,880 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:21:13,176 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:21:13,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:21:13,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:21:13,194 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:21:13,194 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:21:13,195 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2019-11-06 21:21:13,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c0feb2ef/42c421b68dfa40b2b53a21f861b434ea/FLAGe60796063 [2019-11-06 21:21:13,742 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:21:13,743 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+lhb-reducer.c [2019-11-06 21:21:13,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c0feb2ef/42c421b68dfa40b2b53a21f861b434ea/FLAGe60796063 [2019-11-06 21:21:14,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c0feb2ef/42c421b68dfa40b2b53a21f861b434ea [2019-11-06 21:21:14,114 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:21:14,115 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:21:14,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:21:14,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:21:14,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:21:14,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:21:14" (1/1) ... [2019-11-06 21:21:14,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d04c9f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:14, skipping insertion in model container [2019-11-06 21:21:14,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:21:14" (1/1) ... [2019-11-06 21:21:14,133 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:21:14,157 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:21:14,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:21:14,390 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:21:14,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:21:14,529 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:21:14,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:14 WrapperNode [2019-11-06 21:21:14,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:21:14,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:21:14,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:21:14,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:21:14,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:14" (1/1) ... [2019-11-06 21:21:14,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:14" (1/1) ... [2019-11-06 21:21:14,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:14" (1/1) ... [2019-11-06 21:21:14,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:14" (1/1) ... [2019-11-06 21:21:14,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:14" (1/1) ... [2019-11-06 21:21:14,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:14" (1/1) ... [2019-11-06 21:21:14,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:14" (1/1) ... [2019-11-06 21:21:14,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:21:14,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:21:14,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:21:14,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:21:14,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:14" (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 [2019-11-06 21:21:14,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:21:14,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:21:14,635 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:21:14,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:21:14,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 21:21:14,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 21:21:14,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-11-06 21:21:14,636 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:21:14,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:21:14,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:21:14,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:21:14,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:21:14,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:21:14,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:21:15,022 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:21:15,022 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 21:21:15,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:21:15 BoogieIcfgContainer [2019-11-06 21:21:15,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:21:15,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:21:15,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:21:15,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:21:15,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:21:14" (1/3) ... [2019-11-06 21:21:15,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e47ad78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:21:15, skipping insertion in model container [2019-11-06 21:21:15,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:21:14" (2/3) ... [2019-11-06 21:21:15,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e47ad78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:21:15, skipping insertion in model container [2019-11-06 21:21:15,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:21:15" (3/3) ... [2019-11-06 21:21:15,031 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+lhb-reducer.c [2019-11-06 21:21:15,051 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:21:15,066 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-06 21:21:15,085 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-06 21:21:15,109 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:21:15,109 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:21:15,109 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:21:15,109 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:21:15,110 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:21:15,110 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:21:15,110 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:21:15,110 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:21:15,129 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-11-06 21:21:15,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-06 21:21:15,135 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:21:15,137 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:21:15,139 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:21:15,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:21:15,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1494900034, now seen corresponding path program 1 times [2019-11-06 21:21:15,154 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:21:15,154 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106193079] [2019-11-06 21:21:15,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:21:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:21:15,459 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106193079] [2019-11-06 21:21:15,461 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:21:15,462 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:21:15,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860775802] [2019-11-06 21:21:15,473 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:21:15,473 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:21:15,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:21:15,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:21:15,501 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2019-11-06 21:21:15,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:21:15,696 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions. [2019-11-06 21:21:15,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:21:15,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-06 21:21:15,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:21:15,711 INFO L225 Difference]: With dead ends: 56 [2019-11-06 21:21:15,712 INFO L226 Difference]: Without dead ends: 34 [2019-11-06 21:21:15,718 INFO L630 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 [2019-11-06 21:21:15,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-06 21:21:15,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2019-11-06 21:21:15,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-06 21:21:15,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2019-11-06 21:21:15,778 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 13 [2019-11-06 21:21:15,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:21:15,780 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2019-11-06 21:21:15,780 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:21:15,780 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2019-11-06 21:21:15,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-06 21:21:15,782 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:21:15,782 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:21:15,783 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:21:15,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:21:15,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1256853917, now seen corresponding path program 1 times [2019-11-06 21:21:15,784 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:21:15,785 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125086504] [2019-11-06 21:21:15,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:21:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:15,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:21:15,909 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125086504] [2019-11-06 21:21:15,909 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:21:15,909 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 21:21:15,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619396058] [2019-11-06 21:21:15,911 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 21:21:15,912 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:21:15,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 21:21:15,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 21:21:15,913 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 5 states. [2019-11-06 21:21:16,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:21:16,016 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2019-11-06 21:21:16,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 21:21:16,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-06 21:21:16,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:21:16,018 INFO L225 Difference]: With dead ends: 53 [2019-11-06 21:21:16,018 INFO L226 Difference]: Without dead ends: 51 [2019-11-06 21:21:16,020 INFO L630 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 [2019-11-06 21:21:16,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-06 21:21:16,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 34. [2019-11-06 21:21:16,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-06 21:21:16,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2019-11-06 21:21:16,029 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 14 [2019-11-06 21:21:16,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:21:16,029 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2019-11-06 21:21:16,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 21:21:16,029 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2019-11-06 21:21:16,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-06 21:21:16,030 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:21:16,031 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:21:16,031 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:21:16,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:21:16,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1192177656, now seen corresponding path program 1 times [2019-11-06 21:21:16,032 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:21:16,032 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291587312] [2019-11-06 21:21:16,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:21:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:16,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:21:16,135 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291587312] [2019-11-06 21:21:16,135 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:21:16,135 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:21:16,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491421995] [2019-11-06 21:21:16,138 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:21:16,138 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:21:16,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:21:16,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:21:16,139 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 4 states. [2019-11-06 21:21:16,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:21:16,254 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2019-11-06 21:21:16,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:21:16,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-06 21:21:16,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:21:16,257 INFO L225 Difference]: With dead ends: 62 [2019-11-06 21:21:16,258 INFO L226 Difference]: Without dead ends: 41 [2019-11-06 21:21:16,258 INFO L630 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 [2019-11-06 21:21:16,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-06 21:21:16,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2019-11-06 21:21:16,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-06 21:21:16,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2019-11-06 21:21:16,267 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 14 [2019-11-06 21:21:16,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:21:16,267 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2019-11-06 21:21:16,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:21:16,280 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2019-11-06 21:21:16,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-06 21:21:16,281 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:21:16,281 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:21:16,282 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:21:16,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:21:16,283 INFO L82 PathProgramCache]: Analyzing trace with hash -249616619, now seen corresponding path program 1 times [2019-11-06 21:21:16,283 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:21:16,283 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282092077] [2019-11-06 21:21:16,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:21:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:16,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:21:16,374 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282092077] [2019-11-06 21:21:16,375 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:21:16,375 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 21:21:16,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873243864] [2019-11-06 21:21:16,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 21:21:16,376 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:21:16,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 21:21:16,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 21:21:16,377 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 4 states. [2019-11-06 21:21:16,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:21:16,454 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2019-11-06 21:21:16,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 21:21:16,455 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-11-06 21:21:16,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:21:16,456 INFO L225 Difference]: With dead ends: 56 [2019-11-06 21:21:16,456 INFO L226 Difference]: Without dead ends: 35 [2019-11-06 21:21:16,457 INFO L630 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 [2019-11-06 21:21:16,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-06 21:21:16,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2019-11-06 21:21:16,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-06 21:21:16,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2019-11-06 21:21:16,462 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 15 [2019-11-06 21:21:16,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:21:16,462 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2019-11-06 21:21:16,463 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 21:21:16,463 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2019-11-06 21:21:16,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-06 21:21:16,463 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:21:16,464 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:21:16,464 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:21:16,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:21:16,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1739668830, now seen corresponding path program 1 times [2019-11-06 21:21:16,465 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:21:16,465 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994622136] [2019-11-06 21:21:16,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:21:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:17,163 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 40 [2019-11-06 21:21:17,405 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 44 [2019-11-06 21:21:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:17,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:21:17,455 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994622136] [2019-11-06 21:21:17,456 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:21:17,456 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-06 21:21:17,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385198220] [2019-11-06 21:21:17,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 21:21:17,457 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:21:17,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 21:21:17,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-11-06 21:21:17,460 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 10 states. [2019-11-06 21:21:17,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:21:17,902 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2019-11-06 21:21:17,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-06 21:21:17,904 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-11-06 21:21:17,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:21:17,905 INFO L225 Difference]: With dead ends: 47 [2019-11-06 21:21:17,906 INFO L226 Difference]: Without dead ends: 31 [2019-11-06 21:21:17,906 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-06 21:21:17,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-06 21:21:17,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-11-06 21:21:17,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-06 21:21:17,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2019-11-06 21:21:17,918 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 20 [2019-11-06 21:21:17,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:21:17,919 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2019-11-06 21:21:17,919 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-06 21:21:17,919 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2019-11-06 21:21:17,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-06 21:21:17,921 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:21:17,921 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:21:17,921 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:21:17,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:21:17,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1253973443, now seen corresponding path program 1 times [2019-11-06 21:21:17,922 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:21:17,923 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443077500] [2019-11-06 21:21:17,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:21:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:21:18,037 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443077500] [2019-11-06 21:21:18,037 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:21:18,037 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 21:21:18,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445678492] [2019-11-06 21:21:18,041 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:21:18,042 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:21:18,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:21:18,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:21:18,042 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 7 states. [2019-11-06 21:21:18,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:21:18,169 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2019-11-06 21:21:18,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 21:21:18,170 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2019-11-06 21:21:18,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:21:18,171 INFO L225 Difference]: With dead ends: 44 [2019-11-06 21:21:18,171 INFO L226 Difference]: Without dead ends: 42 [2019-11-06 21:21:18,172 INFO L630 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 [2019-11-06 21:21:18,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-06 21:21:18,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 28. [2019-11-06 21:21:18,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-06 21:21:18,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2019-11-06 21:21:18,177 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 21 [2019-11-06 21:21:18,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:21:18,177 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2019-11-06 21:21:18,177 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:21:18,178 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2019-11-06 21:21:18,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-06 21:21:18,178 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:21:18,178 INFO L410 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] [2019-11-06 21:21:18,179 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:21:18,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:21:18,179 INFO L82 PathProgramCache]: Analyzing trace with hash 899200671, now seen corresponding path program 1 times [2019-11-06 21:21:18,179 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:21:18,180 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428871501] [2019-11-06 21:21:18,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:21:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:20,609 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 [2019-11-06 21:21:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:27,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:21:27,959 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428871501] [2019-11-06 21:21:27,959 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504282135] [2019-11-06 21:21:27,960 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 [2019-11-06 21:21:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:21:28,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-06 21:21:28,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 21:21:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:21:32,314 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-06 21:21:32,314 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4] total 12 [2019-11-06 21:21:32,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503035291] [2019-11-06 21:21:32,315 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 21:21:32,315 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:21:32,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-06 21:21:32,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=79, Unknown=6, NotChecked=18, Total=132 [2019-11-06 21:21:32,316 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 12 states. [2019-11-06 21:21:54,953 WARN L191 SmtUtils]: Spent 17.87 s on a formula simplification. DAG size of input: 49 DAG size of output: 38