/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 0.1.25-72570d3 [2020-08-22 16:17:58,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:17:58,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:17:58,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:17:58,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:17:58,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:17:58,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:17:58,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:17:58,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:17:58,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:17:58,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:17:58,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:17:58,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:17:58,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:17:58,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:17:58,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:17:58,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:17:58,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:17:58,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:17:58,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:17:58,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:17:58,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:17:58,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:17:58,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:17:58,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:17:58,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:17:58,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:17:58,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:17:58,295 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 [2020-08-22 16:17:58,318 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:17:58,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:17:58,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:17:58,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:17:58,320 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:17:58,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:17:58,320 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:17:58,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:17:58,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:17:58,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:17:58,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:17:58,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:17:58,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:17:58,321 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:17:58,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:17:58,322 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:17:58,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:17:58,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:17:58,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:17:58,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:17:58,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:17:58,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:17:58,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:17:58,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:17:58,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:17:58,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:17:58,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:17:58,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:17:58,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:17:58,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:17:58,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:17:58,687 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:17:58,693 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:17:58,694 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:17:58,695 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:17:58,697 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_7-2.c [2020-08-22 16:17:58,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe838a94/54e6862163de4880ac4c3ae4cbd8d580/FLAG95087c76b [2020-08-22 16:17:59,235 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:17:59,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/jain_7-2.c [2020-08-22 16:17:59,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe838a94/54e6862163de4880ac4c3ae4cbd8d580/FLAG95087c76b [2020-08-22 16:17:59,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbe838a94/54e6862163de4880ac4c3ae4cbd8d580 [2020-08-22 16:17:59,595 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:17:59,598 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:17:59,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:59,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:17:59,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:17:59,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:59" (1/1) ... [2020-08-22 16:17:59,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccd6618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:59, skipping insertion in model container [2020-08-22 16:17:59,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:59" (1/1) ... [2020-08-22 16:17:59,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:17:59,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:17:59,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:59,821 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:17:59,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:59,858 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:17:59,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:59 WrapperNode [2020-08-22 16:17:59,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:59,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:17:59,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:17:59,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:17:59,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:59" (1/1) ... [2020-08-22 16:17:59,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:59" (1/1) ... [2020-08-22 16:17:59,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:59" (1/1) ... [2020-08-22 16:17:59,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:59" (1/1) ... [2020-08-22 16:17:59,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:59" (1/1) ... [2020-08-22 16:17:59,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:59" (1/1) ... [2020-08-22 16:17:59,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:59" (1/1) ... [2020-08-22 16:17:59,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:17:59,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:17:59,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:17:59,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:17:59,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:59" (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 [2020-08-22 16:18:00,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:18:00,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:18:00,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 16:18:00,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:18:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:18:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-22 16:18:00,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 16:18:00,081 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:18:00,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:18:00,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:18:00,274 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:18:00,275 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 16:18:00,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:18:00 BoogieIcfgContainer [2020-08-22 16:18:00,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:18:00,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:18:00,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:18:00,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:18:00,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:17:59" (1/3) ... [2020-08-22 16:18:00,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ae49c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:18:00, skipping insertion in model container [2020-08-22 16:18:00,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:59" (2/3) ... [2020-08-22 16:18:00,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ae49c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:18:00, skipping insertion in model container [2020-08-22 16:18:00,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:18:00" (3/3) ... [2020-08-22 16:18:00,287 INFO L109 eAbstractionObserver]: Analyzing ICFG jain_7-2.c [2020-08-22 16:18:00,297 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:18:00,304 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:18:00,318 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:18:00,341 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:18:00,342 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:18:00,342 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:18:00,342 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:18:00,342 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:18:00,342 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:18:00,343 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:18:00,343 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:18:00,360 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-08-22 16:18:00,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-22 16:18:00,366 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:00,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:18:00,368 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:00,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:00,374 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2020-08-22 16:18:00,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:00,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141569940] [2020-08-22 16:18:00,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:00,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:00,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:18:00,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141569940] [2020-08-22 16:18:00,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:18:00,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:18:00,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318059260] [2020-08-22 16:18:00,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:18:00,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:18:00,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:18:00,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:18:00,738 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-08-22 16:18:02,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:18:02,945 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-08-22 16:18:02,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 16:18:02,947 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-08-22 16:18:02,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:18:02,956 INFO L225 Difference]: With dead ends: 33 [2020-08-22 16:18:02,956 INFO L226 Difference]: Without dead ends: 20 [2020-08-22 16:18:02,965 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 [2020-08-22 16:18:02,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-08-22 16:18:03,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-08-22 16:18:03,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-22 16:18:03,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-08-22 16:18:03,003 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-08-22 16:18:03,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:18:03,004 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-08-22 16:18:03,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:18:03,004 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-08-22 16:18:03,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 16:18:03,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:18:03,005 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:18:03,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:18:03,006 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:18:03,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:18:03,006 INFO L82 PathProgramCache]: Analyzing trace with hash 327764987, now seen corresponding path program 1 times [2020-08-22 16:18:03,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:18:03,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396001960] [2020-08-22 16:18:03,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:18:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:03,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:18:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:03,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:18:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:18:03,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:18:03,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396001960] [2020-08-22 16:18:03,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199367127] [2020-08-22 16:18:03,204 INFO L95 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