/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_7-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 12:59:49,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 12:59:49,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 12:59:49,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 12:59:49,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 12:59:49,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 12:59:49,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 12:59:49,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 12:59:49,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 12:59:49,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 12:59:49,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 12:59:49,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 12:59:49,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 12:59:49,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 12:59:49,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 12:59:49,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 12:59:49,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 12:59:49,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 12:59:49,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 12:59:49,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 12:59:49,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 12:59:49,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 12:59:49,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 12:59:49,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 12:59:49,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 12:59:49,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 12:59:49,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 12:59:49,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 12:59:49,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 12:59:49,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 12:59:49,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 12:59:49,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 12:59:49,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 12:59:49,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 12:59:49,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 12:59:49,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 12:59:49,180 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 12:59:49,229 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 12:59:49,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 12:59:49,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 12:59:49,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 12:59:49,231 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 12:59:49,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 12:59:49,232 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 12:59:49,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 12:59:49,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 12:59:49,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 12:59:49,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 12:59:49,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 12:59:49,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 12:59:49,234 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 12:59:49,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 12:59:49,235 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 12:59:49,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 12:59:49,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 12:59:49,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 12:59:49,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 12:59:49,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 12:59:49,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 12:59:49,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 12:59:49,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 12:59:49,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 12:59:49,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 12:59:49,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 12:59:49,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 12:59:49,238 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 12:59:49,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 12:59:49,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 12:59:49,718 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 12:59:49,723 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 12:59:49,725 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 12:59:49,727 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 12:59:49,729 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_7-2.c [2020-09-04 12:59:49,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35c1763d9/5b0b1d3544524a40b6e1d97cdff03eae/FLAGba0193411 [2020-09-04 12:59:50,311 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 12:59:50,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/jain_7-2.c [2020-09-04 12:59:50,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35c1763d9/5b0b1d3544524a40b6e1d97cdff03eae/FLAGba0193411 [2020-09-04 12:59:50,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35c1763d9/5b0b1d3544524a40b6e1d97cdff03eae [2020-09-04 12:59:50,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 12:59:50,670 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 12:59:50,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 12:59:50,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 12:59:50,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 12:59:50,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:59:50" (1/1) ... [2020-09-04 12:59:50,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f41fcdb 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 12:59:50,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:59:50" (1/1) ... [2020-09-04 12:59:50,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 12:59:50,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 12:59:50,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 12:59:50,958 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 12:59:50,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 12:59:50,989 INFO L208 MainTranslator]: Completed translation [2020-09-04 12:59:50,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:50 WrapperNode [2020-09-04 12:59:50,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 12:59:50,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 12:59:50,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 12:59:50,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 12:59:51,003 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 12:59:51,003 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 12:59:51,008 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 12:59:51,009 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 12:59:51,013 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 12:59:51,020 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 12:59:51,020 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 12:59:51,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 12:59:51,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 12:59:51,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 12:59:51,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 12:59:51,097 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 12:59:51,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 12:59:51,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 12:59:51,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 12:59:51,166 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 12:59:51,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 12:59:51,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-04 12:59:51,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 12:59:51,166 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 12:59:51,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 12:59:51,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 12:59:51,346 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 12:59:51,346 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 12:59:51,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:59:51 BoogieIcfgContainer [2020-09-04 12:59:51,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 12:59:51,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 12:59:51,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 12:59:51,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 12:59:51,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 12:59:50" (1/3) ... [2020-09-04 12:59:51,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5527b4fe 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 12:59:51,357 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 12:59:51,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5527b4fe 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 12:59:51,358 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 12:59:51,360 INFO L109 eAbstractionObserver]: Analyzing ICFG jain_7-2.c [2020-09-04 12:59:51,368 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 12:59:51,378 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 12:59:51,396 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 12:59:51,422 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 12:59:51,423 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 12:59:51,423 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 12:59:51,423 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 12:59:51,423 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 12:59:51,423 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 12:59:51,423 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 12:59:51,423 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 12:59:51,441 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-09-04 12:59:51,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-04 12:59:51,447 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:59:51,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:59:51,449 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:59:51,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:59:51,455 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2020-09-04 12:59:51,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:59:51,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436548995] [2020-09-04 12:59:51,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:59:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:51,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:59:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:51,832 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 12:59:51,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436548995] [2020-09-04 12:59:51,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:59:51,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 12:59:51,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049719768] [2020-09-04 12:59:51,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 12:59:51,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:59:51,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 12:59:51,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 12:59:51,861 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-09-04 12:59:54,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:59:54,060 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-09-04 12:59:54,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 12:59:54,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-09-04 12:59:54,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:59:54,072 INFO L225 Difference]: With dead ends: 33 [2020-09-04 12:59:54,072 INFO L226 Difference]: Without dead ends: 20 [2020-09-04 12:59:54,076 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 12:59:54,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-09-04 12:59:54,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-09-04 12:59:54,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-09-04 12:59:54,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-09-04 12:59:54,126 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-09-04 12:59:54,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:59:54,127 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-09-04 12:59:54,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 12:59:54,127 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-09-04 12:59:54,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-04 12:59:54,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:59:54,129 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:59:54,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 12:59:54,130 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:59:54,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:59:54,130 INFO L82 PathProgramCache]: Analyzing trace with hash 327764987, now seen corresponding path program 1 times [2020-09-04 12:59:54,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:59:54,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026265392] [2020-09-04 12:59:54,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:59:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:56,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:59:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:56,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:59:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:56,399 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 12:59:56,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026265392] [2020-09-04 12:59:56,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906955598] [2020-09-04 12:59:56,400 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