/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/terminator_01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:51:07,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:51:07,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:51:07,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:51:07,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:51:07,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:51:07,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:51:07,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:51:07,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:51:07,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:51:07,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:51:07,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:51:07,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:51:07,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:51:07,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:51:07,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:51:07,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:51:07,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:51:07,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:51:07,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:51:07,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:51:07,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:51:07,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:51:07,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:51:07,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:51:07,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:51:07,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:51:07,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:51:07,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:51:07,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:51:07,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:51:07,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:51:07,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:51:07,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:51:07,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:51:07,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:51:07,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:51:07,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:51:07,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:51:07,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:51:07,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:51:07,093 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 15:51:07,115 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:51:07,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:51:07,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:51:07,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:51:07,117 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:51:07,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:51:07,117 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:51:07,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:51:07,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:51:07,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:51:07,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:51:07,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:51:07,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:51:07,119 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:51:07,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:51:07,119 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:51:07,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:51:07,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:51:07,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:51:07,120 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:51:07,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:51:07,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:51:07,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:51:07,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:51:07,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:51:07,121 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:51:07,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:51:07,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:51:07,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:51:07,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:51:07,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:51:07,460 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:51:07,463 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:51:07,465 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:51:07,465 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:51:07,466 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_01.c [2020-08-21 15:51:07,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eae82ff39/df1fb7b5bdf74dfca3502bd6d1924d22/FLAGed0e7dc24 [2020-08-21 15:51:08,018 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:51:08,019 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/terminator_01.c [2020-08-21 15:51:08,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eae82ff39/df1fb7b5bdf74dfca3502bd6d1924d22/FLAGed0e7dc24 [2020-08-21 15:51:08,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eae82ff39/df1fb7b5bdf74dfca3502bd6d1924d22 [2020-08-21 15:51:08,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:51:08,511 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:51:08,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:51:08,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:51:08,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:51:08,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:51:08" (1/1) ... [2020-08-21 15:51:08,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eb1d53a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:08, skipping insertion in model container [2020-08-21 15:51:08,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:51:08" (1/1) ... [2020-08-21 15:51:08,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:51:08,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:51:08,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:51:08,708 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:51:08,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:51:08,741 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:51:08,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:08 WrapperNode [2020-08-21 15:51:08,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:51:08,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:51:08,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:51:08,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:51:08,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:08" (1/1) ... [2020-08-21 15:51:08,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:08" (1/1) ... [2020-08-21 15:51:08,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:08" (1/1) ... [2020-08-21 15:51:08,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:08" (1/1) ... [2020-08-21 15:51:08,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:08" (1/1) ... [2020-08-21 15:51:08,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:08" (1/1) ... [2020-08-21 15:51:08,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:08" (1/1) ... [2020-08-21 15:51:08,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:51:08,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:51:08,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:51:08,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:51:08,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:08" (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 [2020-08-21 15:51:08,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:51:08,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:51:08,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 15:51:08,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:51:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:51:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 15:51:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:51:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:51:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:51:08,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 15:51:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:51:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:51:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:51:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:51:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:51:09,126 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:51:09,126 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 15:51:09,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:51:09 BoogieIcfgContainer [2020-08-21 15:51:09,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:51:09,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:51:09,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:51:09,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:51:09,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:51:08" (1/3) ... [2020-08-21 15:51:09,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a07dbd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:51:09, skipping insertion in model container [2020-08-21 15:51:09,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:51:08" (2/3) ... [2020-08-21 15:51:09,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a07dbd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:51:09, skipping insertion in model container [2020-08-21 15:51:09,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:51:09" (3/3) ... [2020-08-21 15:51:09,138 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_01.c [2020-08-21 15:51:09,150 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:51:09,157 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:51:09,172 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:51:09,213 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:51:09,217 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:51:09,217 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:51:09,217 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:51:09,217 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:51:09,217 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:51:09,217 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:51:09,218 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:51:09,249 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-08-21 15:51:09,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-21 15:51:09,256 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:51:09,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:51:09,258 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:51:09,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:51:09,266 INFO L82 PathProgramCache]: Analyzing trace with hash -564387615, now seen corresponding path program 1 times [2020-08-21 15:51:09,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:51:09,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44796367] [2020-08-21 15:51:09,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:51:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:51:09,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:51:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:51:09,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:51:09,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44796367] [2020-08-21 15:51:09,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:51:09,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:51:09,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529786696] [2020-08-21 15:51:09,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:51:09,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:51:09,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:51:09,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:51:09,491 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-08-21 15:51:09,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:51:09,590 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-08-21 15:51:09,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:51:09,594 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-08-21 15:51:09,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:51:09,611 INFO L225 Difference]: With dead ends: 32 [2020-08-21 15:51:09,612 INFO L226 Difference]: Without dead ends: 13 [2020-08-21 15:51:09,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:51:09,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-08-21 15:51:09,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-08-21 15:51:09,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-08-21 15:51:09,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-08-21 15:51:09,674 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2020-08-21 15:51:09,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:51:09,675 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-08-21 15:51:09,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:51:09,676 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-08-21 15:51:09,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-21 15:51:09,678 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:51:09,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:51:09,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:51:09,679 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:51:09,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:51:09,679 INFO L82 PathProgramCache]: Analyzing trace with hash -538271495, now seen corresponding path program 1 times [2020-08-21 15:51:09,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:51:09,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303682296] [2020-08-21 15:51:09,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:51:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 15:51:09,750 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 15:51:09,751 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 15:51:09,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:51:09,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:51:09 BoogieIcfgContainer [2020-08-21 15:51:09,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:51:09,780 INFO L168 Benchmark]: Toolchain (without parser) took 1267.73 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 102.8 MB in the beginning and 139.6 MB in the end (delta: -36.7 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-08-21 15:51:09,783 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 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. [2020-08-21 15:51:09,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.06 ms. Allocated memory is still 140.0 MB. Free memory was 102.6 MB in the beginning and 92.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-21 15:51:09,788 INFO L168 Benchmark]: Boogie Preprocessor took 113.55 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 92.9 MB in the beginning and 179.7 MB in the end (delta: -86.9 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2020-08-21 15:51:09,789 INFO L168 Benchmark]: RCFGBuilder took 273.30 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 165.6 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-08-21 15:51:09,791 INFO L168 Benchmark]: TraceAbstraction took 646.14 ms. Allocated memory is still 201.9 MB. Free memory was 165.6 MB in the beginning and 139.6 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-08-21 15:51:09,802 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 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 230.06 ms. Allocated memory is still 140.0 MB. Free memory was 102.6 MB in the beginning and 92.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.55 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 92.9 MB in the beginning and 179.7 MB in the end (delta: -86.9 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 273.30 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 165.6 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 646.14 ms. Allocated memory is still 201.9 MB. Free memory was 165.6 MB in the beginning and 139.6 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] int x=__VERIFIER_nondet_int(); [L13] int x=__VERIFIER_nondet_int(); [L14] int *p = &x; [L16] EXPR \read(x) [L16] COND FALSE !(x<100) [L19] CALL __VERIFIER_assert(0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 5 SDslu, 4 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 190 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...