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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loops/invert_string-3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 12:45:48,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 12:45:48,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 12:45:48,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-05 12:45:48,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-05 12:45:48,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-05 12:45:48,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-05 12:45:48,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-05 12:45:49,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-05 12:45:49,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-05 12:45:49,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-05 12:45:49,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-05 12:45:49,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 12:45:49,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 12:45:49,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 12:45:49,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 12:45:49,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 12:45:49,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 12:45:49,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 12:45:49,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 12:45:49,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 12:45:49,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 12:45:49,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 12:45:49,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 12:45:49,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-05 12:45:49,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-05 12:45:49,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-05 12:45:49,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-05 12:45:49,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-05 12:45:49,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-05 12:45:49,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-05 12:45:49,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-05 12:45:49,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-05 12:45:49,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 12:45:49,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 12:45:49,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 12:45:49,030 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-05 12:45:49,050 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 12:45:49,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 12:45:49,051 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-05 12:45:49,051 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-05 12:45:49,054 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-05 12:45:49,054 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-05 12:45:49,054 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-05 12:45:49,054 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-05 12:45:49,055 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-05 12:45:49,055 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-05 12:45:49,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 12:45:49,056 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 12:45:49,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 12:45:49,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 12:45:49,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 12:45:49,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 12:45:49,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 12:45:49,057 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 12:45:49,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 12:45:49,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 12:45:49,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 12:45:49,059 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-05 12:45:49,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 12:45:49,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 12:45:49,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 12:45:49,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 12:45:49,060 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-05 12:45:49,061 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 12:45:49,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 12:45:49,061 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-05 12:45:49,096 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 12:45:49,109 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 12:45:49,113 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 12:45:49,114 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 12:45:49,115 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 12:45:49,115 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/invert_string-3.c [2019-09-05 12:45:49,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9282579f4/eb5f56ea0b7343b38bedeac60e3bd1c8/FLAGe217d3788 [2019-09-05 12:45:49,676 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 12:45:49,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/invert_string-3.c [2019-09-05 12:45:49,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9282579f4/eb5f56ea0b7343b38bedeac60e3bd1c8/FLAGe217d3788 [2019-09-05 12:45:50,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9282579f4/eb5f56ea0b7343b38bedeac60e3bd1c8 [2019-09-05 12:45:50,077 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 12:45:50,078 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 12:45:50,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 12:45:50,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 12:45:50,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 12:45:50,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:45:50" (1/1) ... [2019-09-05 12:45:50,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62cb8da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:50, skipping insertion in model container [2019-09-05 12:45:50,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:45:50" (1/1) ... [2019-09-05 12:45:50,097 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 12:45:50,111 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 12:45:50,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:45:50,304 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 12:45:50,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:45:50,453 INFO L192 MainTranslator]: Completed translation [2019-09-05 12:45:50,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:50 WrapperNode [2019-09-05 12:45:50,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 12:45:50,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 12:45:50,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 12:45:50,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 12:45:50,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:50" (1/1) ... [2019-09-05 12:45:50,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:50" (1/1) ... [2019-09-05 12:45:50,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:50" (1/1) ... [2019-09-05 12:45:50,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:50" (1/1) ... [2019-09-05 12:45:50,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:50" (1/1) ... [2019-09-05 12:45:50,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:50" (1/1) ... [2019-09-05 12:45:50,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:50" (1/1) ... [2019-09-05 12:45:50,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 12:45:50,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 12:45:50,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 12:45:50,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 12:45:50,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 12:45:50,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 12:45:50,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 12:45:50,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 12:45:50,554 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 12:45:50,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 12:45:50,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 12:45:50,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-05 12:45:50,555 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 12:45:50,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-05 12:45:50,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-05 12:45:50,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-05 12:45:50,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-05 12:45:50,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 12:45:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 12:45:50,851 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 12:45:50,852 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-05 12:45:50,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:45:50 BoogieIcfgContainer [2019-09-05 12:45:50,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 12:45:50,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 12:45:50,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 12:45:50,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 12:45:50,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 12:45:50" (1/3) ... [2019-09-05 12:45:50,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e67d24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:45:50, skipping insertion in model container [2019-09-05 12:45:50,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:45:50" (2/3) ... [2019-09-05 12:45:50,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e67d24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:45:50, skipping insertion in model container [2019-09-05 12:45:50,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:45:50" (3/3) ... [2019-09-05 12:45:50,862 INFO L109 eAbstractionObserver]: Analyzing ICFG invert_string-3.c [2019-09-05 12:45:50,870 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 12:45:50,877 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 12:45:50,893 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 12:45:50,921 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 12:45:50,921 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-05 12:45:50,921 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 12:45:50,922 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 12:45:50,922 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 12:45:50,922 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 12:45:50,922 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 12:45:50,922 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 12:45:50,935 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-09-05 12:45:50,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-05 12:45:50,943 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:45:50,944 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:45:50,946 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:45:50,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:45:50,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1778002988, now seen corresponding path program 1 times [2019-09-05 12:45:50,953 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 12:45:50,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:45:50,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:45:50,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:45:50,997 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 12:45:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:45:51,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:45:51,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 12:45:51,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-05 12:45:51,097 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 12:45:51,101 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 12:45:51,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 12:45:51,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 12:45:51,118 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-09-05 12:45:51,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:45:51,137 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2019-09-05 12:45:51,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 12:45:51,139 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-09-05 12:45:51,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:45:51,149 INFO L225 Difference]: With dead ends: 27 [2019-09-05 12:45:51,149 INFO L226 Difference]: Without dead ends: 22 [2019-09-05 12:45:51,151 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 12:45:51,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-09-05 12:45:51,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-09-05 12:45:51,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-09-05 12:45:51,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-09-05 12:45:51,195 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 15 [2019-09-05 12:45:51,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:45:51,196 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-09-05 12:45:51,196 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 12:45:51,196 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-09-05 12:45:51,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-05 12:45:51,197 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:45:51,197 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:45:51,198 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:45:51,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:45:51,198 INFO L82 PathProgramCache]: Analyzing trace with hash -262172122, now seen corresponding path program 1 times [2019-09-05 12:45:51,198 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 12:45:51,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:45:51,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:45:51,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:45:51,200 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 12:45:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:45:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:45:51,431 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 12:45:51,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-05 12:45:51,431 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 12:45:51,433 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-05 12:45:51,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-05 12:45:51,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-05 12:45:51,434 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 4 states. [2019-09-05 12:45:51,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:45:51,549 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-09-05 12:45:51,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-05 12:45:51,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-09-05 12:45:51,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:45:51,552 INFO L225 Difference]: With dead ends: 23 [2019-09-05 12:45:51,552 INFO L226 Difference]: Without dead ends: 23 [2019-09-05 12:45:51,553 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-05 12:45:51,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-09-05 12:45:51,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-09-05 12:45:51,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-09-05 12:45:51,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-09-05 12:45:51,559 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2019-09-05 12:45:51,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:45:51,559 INFO L475 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-09-05 12:45:51,559 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-05 12:45:51,559 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-09-05 12:45:51,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-05 12:45:51,560 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:45:51,561 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:45:51,561 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:45:51,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:45:51,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1485613060, now seen corresponding path program 1 times [2019-09-05 12:45:51,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 12:45:51,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:45:51,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:45:51,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:45:51,564 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 12:45:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:45:51,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-05 12:45:51,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 12:45:51,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-05 12:45:51,695 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 12:45:51,696 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-05 12:45:51,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-05 12:45:51,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-05 12:45:51,697 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 4 states. [2019-09-05 12:45:51,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:45:51,773 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2019-09-05 12:45:51,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-05 12:45:51,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-09-05 12:45:51,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:45:51,776 INFO L225 Difference]: With dead ends: 35 [2019-09-05 12:45:51,777 INFO L226 Difference]: Without dead ends: 29 [2019-09-05 12:45:51,777 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-05 12:45:51,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-05 12:45:51,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2019-09-05 12:45:51,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-05 12:45:51,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-09-05 12:45:51,797 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 17 [2019-09-05 12:45:51,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:45:51,799 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-09-05 12:45:51,799 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-05 12:45:51,799 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-09-05 12:45:51,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-09-05 12:45:51,801 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:45:51,801 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:45:51,802 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:45:51,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:45:51,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1323409058, now seen corresponding path program 1 times [2019-09-05 12:45:51,802 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-05 12:45:51,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:45:51,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:45:51,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:45:51,805 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-05 12:45:51,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:45:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-05 12:45:52,012 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 12:45:52,012 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-05 12:45:52,014 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2019-09-05 12:45:52,016 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [25], [27], [29], [33], [41], [51], [54], [56], [62], [63], [64], [66] [2019-09-05 12:45:52,076 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-05 12:45:52,076 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-05 12:45:52,137 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-05 12:45:52,139 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 16 root evaluator evaluations with a maximum evaluation depth of 0. Performed 16 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 26 variables. [2019-09-05 12:45:52,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:45:52,144 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-05 12:45:52,181 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-05 12:45:52,182 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-05 12:45:52,184 INFO L420 sIntCurrentIteration]: We unified 18 AI predicates to 18 [2019-09-05 12:45:52,184 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-05 12:45:52,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-05 12:45:52,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-09-05 12:45:52,185 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-05 12:45:52,186 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-05 12:45:52,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-05 12:45:52,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 12:45:52,187 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 2 states. [2019-09-05 12:45:52,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:45:52,188 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-05 12:45:52,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-05 12:45:52,188 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-09-05 12:45:52,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:45:52,189 INFO L225 Difference]: With dead ends: 6 [2019-09-05 12:45:52,189 INFO L226 Difference]: Without dead ends: 0 [2019-09-05 12:45:52,189 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-05 12:45:52,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-05 12:45:52,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-05 12:45:52,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-05 12:45:52,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-05 12:45:52,191 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-09-05 12:45:52,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:45:52,191 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-05 12:45:52,191 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-05 12:45:52,191 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-05 12:45:52,192 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-05 12:45:52,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 12:45:52 BoogieIcfgContainer [2019-09-05 12:45:52,198 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 12:45:52,201 INFO L168 Benchmark]: Toolchain (without parser) took 2121.25 ms. Allocated memory was 130.5 MB in the beginning and 199.2 MB in the end (delta: 68.7 MB). Free memory was 84.6 MB in the beginning and 90.9 MB in the end (delta: -6.3 MB). Peak memory consumption was 62.4 MB. Max. memory is 7.1 GB. [2019-09-05 12:45:52,202 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 130.5 MB. Free memory was 103.5 MB in the beginning and 103.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-05 12:45:52,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.07 ms. Allocated memory was 130.5 MB in the beginning and 199.2 MB in the end (delta: 68.7 MB). Free memory was 84.4 MB in the beginning and 175.6 MB in the end (delta: -91.2 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2019-09-05 12:45:52,204 INFO L168 Benchmark]: Boogie Preprocessor took 35.52 ms. Allocated memory is still 199.2 MB. Free memory was 175.6 MB in the beginning and 173.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-09-05 12:45:52,205 INFO L168 Benchmark]: RCFGBuilder took 363.45 ms. Allocated memory is still 199.2 MB. Free memory was 173.7 MB in the beginning and 158.2 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2019-09-05 12:45:52,206 INFO L168 Benchmark]: TraceAbstraction took 1341.10 ms. Allocated memory is still 199.2 MB. Free memory was 158.2 MB in the beginning and 90.9 MB in the end (delta: 67.3 MB). Peak memory consumption was 67.3 MB. Max. memory is 7.1 GB. [2019-09-05 12:45:52,210 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 130.5 MB. Free memory was 103.5 MB in the beginning and 103.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 374.07 ms. Allocated memory was 130.5 MB in the beginning and 199.2 MB in the end (delta: 68.7 MB). Free memory was 84.4 MB in the beginning and 175.6 MB in the end (delta: -91.2 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.52 ms. Allocated memory is still 199.2 MB. Free memory was 175.6 MB in the beginning and 173.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 363.45 ms. Allocated memory is still 199.2 MB. Free memory was 173.7 MB in the beginning and 158.2 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1341.10 ms. Allocated memory is still 199.2 MB. Free memory was 158.2 MB in the beginning and 90.9 MB in the end (delta: 67.3 MB). Peak memory consumption was 67.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 67 SDtfs, 16 SDslu, 52 SDs, 0 SdLazy, 35 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9027777777777778 AbsIntWeakeningRatio, 1.1666666666666667 AbsIntAvgWeakeningVarsNumRemoved, 0.3333333333333333 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 2590 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...