/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/bitvector/jain_6-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 12:59:48,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 12:59:48,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 12:59:49,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 12:59:49,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 12:59:49,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 12:59:49,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 12:59:49,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 12:59:49,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 12:59:49,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 12:59:49,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 12:59:49,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 12:59:49,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 12:59:49,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 12:59:49,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 12:59:49,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 12:59:49,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 12:59:49,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 12:59:49,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 12:59:49,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 12:59:49,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 12:59:49,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 12:59:49,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 12:59:49,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 12:59:49,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 12:59:49,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 12:59:49,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 12:59:49,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 12:59:49,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 12:59:49,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 12:59:49,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 12:59:49,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 12:59:49,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 12:59:49,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 12:59:49,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 12:59:49,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 12:59:49,104 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 12:59:49,129 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 12:59:49,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 12:59:49,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 12:59:49,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 12:59:49,131 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 12:59:49,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 12:59:49,132 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 12:59:49,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 12:59:49,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 12:59:49,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 12:59:49,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 12:59:49,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 12:59:49,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 12:59:49,133 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 12:59:49,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 12:59:49,133 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 12:59:49,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 12:59:49,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 12:59:49,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 12:59:49,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 12:59:49,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 12:59:49,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 12:59:49,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 12:59:49,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 12:59:49,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 12:59:49,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 12:59:49,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 12:59:49,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 12:59:49,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 12:59:49,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 12:59:49,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 12:59:49,638 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 12:59:49,642 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 12:59:49,644 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 12:59:49,645 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 12:59:49,646 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_6-1.c [2020-09-04 12:59:49,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca25ddb24/97368ddcf612433994afb90e1b1e7c70/FLAG127a8a6f8 [2020-09-04 12:59:50,281 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 12:59:50,282 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/jain_6-1.c [2020-09-04 12:59:50,288 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca25ddb24/97368ddcf612433994afb90e1b1e7c70/FLAG127a8a6f8 [2020-09-04 12:59:50,617 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca25ddb24/97368ddcf612433994afb90e1b1e7c70 [2020-09-04 12:59:50,629 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 12:59:50,631 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 12:59:50,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 12:59:50,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 12:59:50,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 12:59:50,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:59:50" (1/1) ... [2020-09-04 12:59:50,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fcb34f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50, skipping insertion in model container [2020-09-04 12:59:50,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:59:50" (1/1) ... [2020-09-04 12:59:50,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 12:59:50,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 12:59:50,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 12:59:50,902 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 12:59:50,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 12:59:50,937 INFO L208 MainTranslator]: Completed translation [2020-09-04 12:59:50,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50 WrapperNode [2020-09-04 12:59:50,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 12:59:50,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 12:59:50,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 12:59:50,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 12:59:50,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50" (1/1) ... [2020-09-04 12:59:50,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50" (1/1) ... [2020-09-04 12:59:50,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50" (1/1) ... [2020-09-04 12:59:50,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50" (1/1) ... [2020-09-04 12:59:50,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50" (1/1) ... [2020-09-04 12:59:50,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50" (1/1) ... [2020-09-04 12:59:50,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50" (1/1) ... [2020-09-04 12:59:51,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 12:59:51,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 12:59:51,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 12:59:51,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 12:59:51,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 12:59:51,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 12:59:51,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 12:59:51,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 12:59:51,145 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 12:59:51,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 12:59:51,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-04 12:59:51,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 12:59:51,146 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 12:59:51,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 12:59:51,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 12:59:51,333 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 12:59:51,334 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 12:59:51,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:59:51 BoogieIcfgContainer [2020-09-04 12:59:51,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 12:59:51,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 12:59:51,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 12:59:51,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 12:59:51,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 12:59:50" (1/3) ... [2020-09-04 12:59:51,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192fbfdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:59:51, skipping insertion in model container [2020-09-04 12:59:51,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50" (2/3) ... [2020-09-04 12:59:51,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192fbfdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:59:51, skipping insertion in model container [2020-09-04 12:59:51,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:59:51" (3/3) ... [2020-09-04 12:59:51,348 INFO L109 eAbstractionObserver]: Analyzing ICFG jain_6-1.c [2020-09-04 12:59:51,360 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 12:59:51,371 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 12:59:51,394 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 12:59:51,426 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 12:59:51,426 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 12:59:51,427 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 12:59:51,427 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 12:59:51,427 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 12:59:51,427 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 12:59:51,427 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 12:59:51,428 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 12:59:51,452 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-09-04 12:59:51,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-04 12:59:51,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:59:51,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:59:51,462 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:59:51,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:59:51,469 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2020-09-04 12:59:51,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:59:51,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48331228] [2020-09-04 12:59:51,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:59:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:51,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:59:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:51,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:59:51,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48331228] [2020-09-04 12:59:51,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:59:51,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 12:59:51,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361664190] [2020-09-04 12:59:51,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 12:59:51,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:59:51,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 12:59:51,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 12:59:51,846 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-09-04 12:59:52,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:59:52,111 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-09-04 12:59:52,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 12:59:52,114 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-09-04 12:59:52,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:59:52,125 INFO L225 Difference]: With dead ends: 33 [2020-09-04 12:59:52,125 INFO L226 Difference]: Without dead ends: 20 [2020-09-04 12:59:52,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 12:59:52,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-09-04 12:59:52,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-09-04 12:59:52,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-09-04 12:59:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-09-04 12:59:52,184 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-09-04 12:59:52,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:59:52,184 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-09-04 12:59:52,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 12:59:52,185 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-09-04 12:59:52,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-04 12:59:52,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:59:52,186 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:59:52,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 12:59:52,187 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:59:52,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:59:52,187 INFO L82 PathProgramCache]: Analyzing trace with hash 327764987, now seen corresponding path program 1 times [2020-09-04 12:59:52,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:59:52,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457250535] [2020-09-04 12:59:52,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:59:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:52,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:59:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:52,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:59:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:52,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:59:52,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457250535] [2020-09-04 12:59:52,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177980881] [2020-09-04 12:59:52,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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