/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/brs2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:43:21,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:43:21,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:43:21,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:43:21,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:43:21,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:43:21,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:43:21,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:43:21,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:43:21,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:43:21,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:43:21,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:43:21,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:43:21,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:43:21,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:43:21,085 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:43:21,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:43:21,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:43:21,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:43:21,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:43:21,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:43:21,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:43:21,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:43:21,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:43:21,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:43:21,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:43:21,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:43:21,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:43:21,115 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 17:43:21,130 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:43:21,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:43:21,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:43:21,132 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:43:21,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:43:21,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:43:21,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:43:21,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:43:21,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:43:21,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:43:21,133 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:43:21,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:43:21,134 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:43:21,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:43:21,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:43:21,134 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:43:21,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:43:21,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:43:21,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:43:21,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:43:21,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:43:21,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:43:21,136 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:43:21,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:43:21,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:43:21,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:43:21,557 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:43:21,558 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:43:21,559 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs2f.c [2020-09-04 17:43:21,651 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc6788d4f/8f1fe3e015374bd6aa8d4d701d64e099/FLAG023f5af6e [2020-09-04 17:43:22,225 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:43:22,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs2f.c [2020-09-04 17:43:22,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc6788d4f/8f1fe3e015374bd6aa8d4d701d64e099/FLAG023f5af6e [2020-09-04 17:43:22,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc6788d4f/8f1fe3e015374bd6aa8d4d701d64e099 [2020-09-04 17:43:22,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:43:22,532 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:43:22,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:22,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:43:22,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:43:22,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:22" (1/1) ... [2020-09-04 17:43:22,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb59baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:22, skipping insertion in model container [2020-09-04 17:43:22,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:43:22" (1/1) ... [2020-09-04 17:43:22,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:43:22,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:43:22,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:22,831 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:43:22,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:43:22,876 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:43:22,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:22 WrapperNode [2020-09-04 17:43:22,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:43:22,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:43:22,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:43:22,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:43:22,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:22" (1/1) ... [2020-09-04 17:43:22,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:22" (1/1) ... [2020-09-04 17:43:22,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:22" (1/1) ... [2020-09-04 17:43:22,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:22" (1/1) ... [2020-09-04 17:43:23,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:22" (1/1) ... [2020-09-04 17:43:23,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:22" (1/1) ... [2020-09-04 17:43:23,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:22" (1/1) ... [2020-09-04 17:43:23,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:43:23,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:43:23,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:43:23,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:43:23,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:22" (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 17:43:23,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:43:23,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:43:23,101 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:43:23,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:43:23,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:43:23,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:43:23,102 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:43:23,102 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:43:23,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:43:23,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:43:23,102 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:43:23,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:43:23,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:43:23,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:43:23,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:43:23,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:43:23,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:43:23,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:43:23,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:43:23,497 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:43:23,497 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-04 17:43:23,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:23 BoogieIcfgContainer [2020-09-04 17:43:23,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:43:23,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:43:23,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:43:23,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:43:23,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:43:22" (1/3) ... [2020-09-04 17:43:23,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536c66ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:23, skipping insertion in model container [2020-09-04 17:43:23,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:43:22" (2/3) ... [2020-09-04 17:43:23,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@536c66ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:43:23, skipping insertion in model container [2020-09-04 17:43:23,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:43:23" (3/3) ... [2020-09-04 17:43:23,512 INFO L109 eAbstractionObserver]: Analyzing ICFG brs2f.c [2020-09-04 17:43:23,524 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:43:23,533 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:43:23,554 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:43:23,581 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:43:23,581 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:43:23,581 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:43:23,581 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:43:23,582 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:43:23,582 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:43:23,582 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:43:23,582 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:43:23,599 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-09-04 17:43:23,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 17:43:23,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:23,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:43:23,612 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:23,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:23,618 INFO L82 PathProgramCache]: Analyzing trace with hash 221259408, now seen corresponding path program 1 times [2020-09-04 17:43:23,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:23,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148447048] [2020-09-04 17:43:23,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:23,704 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:23,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:23,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:23,925 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 17:43:23,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148447048] [2020-09-04 17:43:23,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:23,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:43:23,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441291941] [2020-09-04 17:43:23,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:43:23,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:23,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:43:23,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:43:23,951 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2020-09-04 17:43:24,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:24,158 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2020-09-04 17:43:24,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:43:24,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-09-04 17:43:24,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:24,172 INFO L225 Difference]: With dead ends: 101 [2020-09-04 17:43:24,173 INFO L226 Difference]: Without dead ends: 47 [2020-09-04 17:43:24,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:43:24,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-04 17:43:24,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-04 17:43:24,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-04 17:43:24,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2020-09-04 17:43:24,228 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 30 [2020-09-04 17:43:24,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:24,229 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2020-09-04 17:43:24,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:43:24,229 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2020-09-04 17:43:24,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 17:43:24,231 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:24,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:43:24,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:43:24,232 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:24,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:24,233 INFO L82 PathProgramCache]: Analyzing trace with hash -151091841, now seen corresponding path program 1 times [2020-09-04 17:43:24,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:24,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814103591] [2020-09-04 17:43:24,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:24,236 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:24,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:24,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:24,370 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 17:43:24,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814103591] [2020-09-04 17:43:24,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:24,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:43:24,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230975055] [2020-09-04 17:43:24,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:43:24,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:24,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:43:24,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:43:24,374 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 5 states. [2020-09-04 17:43:24,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:24,575 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2020-09-04 17:43:24,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:43:24,576 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-04 17:43:24,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:24,578 INFO L225 Difference]: With dead ends: 81 [2020-09-04 17:43:24,578 INFO L226 Difference]: Without dead ends: 56 [2020-09-04 17:43:24,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-04 17:43:24,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-04 17:43:24,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2020-09-04 17:43:24,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-04 17:43:24,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2020-09-04 17:43:24,597 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 30 [2020-09-04 17:43:24,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:24,597 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2020-09-04 17:43:24,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:43:24,598 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2020-09-04 17:43:24,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-04 17:43:24,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:24,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:43:24,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:43:24,600 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:24,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:24,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1707000309, now seen corresponding path program 1 times [2020-09-04 17:43:24,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:24,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144526659] [2020-09-04 17:43:24,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:24,626 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:24,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:24,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:24,882 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 17:43:24,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [144526659] [2020-09-04 17:43:24,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:24,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 17:43:24,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251173684] [2020-09-04 17:43:24,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 17:43:24,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:24,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 17:43:24,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-04 17:43:24,885 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand 8 states. [2020-09-04 17:43:25,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:25,153 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-09-04 17:43:25,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 17:43:25,153 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-09-04 17:43:25,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:25,155 INFO L225 Difference]: With dead ends: 66 [2020-09-04 17:43:25,155 INFO L226 Difference]: Without dead ends: 60 [2020-09-04 17:43:25,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-09-04 17:43:25,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-04 17:43:25,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2020-09-04 17:43:25,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-04 17:43:25,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-09-04 17:43:25,170 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 42 [2020-09-04 17:43:25,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:25,171 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-09-04 17:43:25,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 17:43:25,171 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-09-04 17:43:25,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-04 17:43:25,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:25,173 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:43:25,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:43:25,173 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:25,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:25,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1747495296, now seen corresponding path program 1 times [2020-09-04 17:43:25,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:25,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880721006] [2020-09-04 17:43:25,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:25,187 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:25,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:25,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:25,339 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 17:43:25,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880721006] [2020-09-04 17:43:25,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:25,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 17:43:25,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894795169] [2020-09-04 17:43:25,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 17:43:25,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:25,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 17:43:25,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-09-04 17:43:25,343 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 10 states. [2020-09-04 17:43:25,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:25,650 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2020-09-04 17:43:25,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 17:43:25,651 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-09-04 17:43:25,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:25,653 INFO L225 Difference]: With dead ends: 94 [2020-09-04 17:43:25,653 INFO L226 Difference]: Without dead ends: 65 [2020-09-04 17:43:25,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-09-04 17:43:25,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-04 17:43:25,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2020-09-04 17:43:25,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-04 17:43:25,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-09-04 17:43:25,667 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 52 [2020-09-04 17:43:25,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:25,668 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-09-04 17:43:25,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 17:43:25,668 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-09-04 17:43:25,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-04 17:43:25,670 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:25,670 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:43:25,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 17:43:25,670 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:25,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:25,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1872706551, now seen corresponding path program 2 times [2020-09-04 17:43:25,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:25,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913925291] [2020-09-04 17:43:25,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:25,682 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:25,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:25,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:25,860 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 17:43:25,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913925291] [2020-09-04 17:43:25,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:25,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 17:43:25,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435948076] [2020-09-04 17:43:25,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 17:43:25,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:25,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 17:43:25,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 17:43:25,864 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 6 states. [2020-09-04 17:43:26,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:26,061 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2020-09-04 17:43:26,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 17:43:26,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-09-04 17:43:26,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:26,063 INFO L225 Difference]: With dead ends: 94 [2020-09-04 17:43:26,063 INFO L226 Difference]: Without dead ends: 63 [2020-09-04 17:43:26,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-04 17:43:26,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-04 17:43:26,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-09-04 17:43:26,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-04 17:43:26,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2020-09-04 17:43:26,075 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 58 [2020-09-04 17:43:26,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:26,076 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2020-09-04 17:43:26,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 17:43:26,076 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2020-09-04 17:43:26,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-04 17:43:26,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:26,078 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:43:26,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 17:43:26,078 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:26,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:26,082 INFO L82 PathProgramCache]: Analyzing trace with hash -557611095, now seen corresponding path program 1 times [2020-09-04 17:43:26,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:26,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820625068] [2020-09-04 17:43:26,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:26,089 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:26,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:26,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:26,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:26,895 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 17:43:26,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820625068] [2020-09-04 17:43:26,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:26,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-09-04 17:43:26,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579778003] [2020-09-04 17:43:26,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-04 17:43:26,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:26,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-04 17:43:26,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2020-09-04 17:43:26,909 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 25 states. [2020-09-04 17:43:29,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:29,726 INFO L93 Difference]: Finished difference Result 131 states and 142 transitions. [2020-09-04 17:43:29,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-04 17:43:29,727 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 58 [2020-09-04 17:43:29,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:29,732 INFO L225 Difference]: With dead ends: 131 [2020-09-04 17:43:29,732 INFO L226 Difference]: Without dead ends: 106 [2020-09-04 17:43:29,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=497, Invalid=2583, Unknown=0, NotChecked=0, Total=3080 [2020-09-04 17:43:29,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-04 17:43:29,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2020-09-04 17:43:29,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-04 17:43:29,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2020-09-04 17:43:29,756 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 58 [2020-09-04 17:43:29,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:29,757 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2020-09-04 17:43:29,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-04 17:43:29,757 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2020-09-04 17:43:29,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-04 17:43:29,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:29,759 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:43:29,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 17:43:29,760 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:29,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:29,760 INFO L82 PathProgramCache]: Analyzing trace with hash -2138852750, now seen corresponding path program 2 times [2020-09-04 17:43:29,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:29,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991452159] [2020-09-04 17:43:29,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:29,777 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:30,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:30,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:30,018 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 17:43:30,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991452159] [2020-09-04 17:43:30,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:30,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 17:43:30,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072423055] [2020-09-04 17:43:30,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 17:43:30,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:30,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 17:43:30,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-09-04 17:43:30,021 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand 14 states. [2020-09-04 17:43:30,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:30,649 INFO L93 Difference]: Finished difference Result 131 states and 139 transitions. [2020-09-04 17:43:30,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 17:43:30,650 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2020-09-04 17:43:30,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:30,651 INFO L225 Difference]: With dead ends: 131 [2020-09-04 17:43:30,651 INFO L226 Difference]: Without dead ends: 110 [2020-09-04 17:43:30,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2020-09-04 17:43:30,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-04 17:43:30,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 71. [2020-09-04 17:43:30,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-04 17:43:30,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2020-09-04 17:43:30,689 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 64 [2020-09-04 17:43:30,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:30,690 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2020-09-04 17:43:30,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 17:43:30,690 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2020-09-04 17:43:30,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-04 17:43:30,696 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:30,696 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:43:30,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 17:43:30,697 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:30,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:30,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1245154100, now seen corresponding path program 3 times [2020-09-04 17:43:30,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:30,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060526196] [2020-09-04 17:43:30,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:30,704 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:30,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:43:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:30,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:43:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:43:30,910 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 17:43:30,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060526196] [2020-09-04 17:43:30,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:43:30,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 17:43:30,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781554042] [2020-09-04 17:43:30,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 17:43:30,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:43:30,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 17:43:30,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-09-04 17:43:30,914 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand 14 states. [2020-09-04 17:43:31,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:43:31,344 INFO L93 Difference]: Finished difference Result 129 states and 135 transitions. [2020-09-04 17:43:31,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 17:43:31,344 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-09-04 17:43:31,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:43:31,345 INFO L225 Difference]: With dead ends: 129 [2020-09-04 17:43:31,346 INFO L226 Difference]: Without dead ends: 80 [2020-09-04 17:43:31,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2020-09-04 17:43:31,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-04 17:43:31,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2020-09-04 17:43:31,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-04 17:43:31,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-09-04 17:43:31,375 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 68 [2020-09-04 17:43:31,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:43:31,375 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-09-04 17:43:31,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 17:43:31,376 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-09-04 17:43:31,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-04 17:43:31,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:43:31,384 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:43:31,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 17:43:31,385 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:43:31,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:43:31,385 INFO L82 PathProgramCache]: Analyzing trace with hash 685477565, now seen corresponding path program 4 times [2020-09-04 17:43:31,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:43:31,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631940400] [2020-09-04 17:43:31,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:43:31,391 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:43:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:43:31,434 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:43:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 17:43:31,469 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 17:43:31,548 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 17:43:31,548 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:43:31,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 17:43:31,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:43:31 BoogieIcfgContainer [2020-09-04 17:43:31,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:43:31,593 INFO L168 Benchmark]: Toolchain (without parser) took 9054.87 ms. Allocated memory was 138.9 MB in the beginning and 297.3 MB in the end (delta: 158.3 MB). Free memory was 103.4 MB in the beginning and 168.4 MB in the end (delta: -65.0 MB). Peak memory consumption was 93.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:31,595 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 17:43:31,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.99 ms. Allocated memory is still 138.9 MB. Free memory was 103.2 MB in the beginning and 92.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:31,597 INFO L168 Benchmark]: Boogie Preprocessor took 134.63 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 92.4 MB in the beginning and 180.2 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:31,598 INFO L168 Benchmark]: RCFGBuilder took 489.92 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 161.5 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:31,602 INFO L168 Benchmark]: TraceAbstraction took 8079.64 ms. Allocated memory was 202.9 MB in the beginning and 297.3 MB in the end (delta: 94.4 MB). Free memory was 161.5 MB in the beginning and 168.4 MB in the end (delta: -6.9 MB). Peak memory consumption was 87.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:43:31,611 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 344.99 ms. Allocated memory is still 138.9 MB. Free memory was 103.2 MB in the beginning and 92.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.63 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 92.4 MB in the beginning and 180.2 MB in the end (delta: -87.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 489.92 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 161.5 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8079.64 ms. Allocated memory was 202.9 MB in the beginning and 297.3 MB in the end (delta: 94.4 MB). Free memory was 161.5 MB in the beginning and 168.4 MB in the end (delta: -6.9 MB). Peak memory consumption was 87.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i