/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condmf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:19:20,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:19:20,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:19:20,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:19:20,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:19:20,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:19:20,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:19:20,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:19:20,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:19:20,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:19:20,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:19:20,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:19:20,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:19:20,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:19:20,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:19:20,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:19:20,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:19:20,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:19:20,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:19:20,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:19:20,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:19:20,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:19:20,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:19:20,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:19:20,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:19:20,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:19:20,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:19:20,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:19:20,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:19:20,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:19:20,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:19:20,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:19:20,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:19:20,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:19:20,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:19:20,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:19:20,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:19:20,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:19:20,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:19:20,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:19:20,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:19:20,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 17:19:21,005 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:19:21,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:19:21,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:19:21,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:19:21,008 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:19:21,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:19:21,008 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:19:21,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:19:21,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:19:21,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:19:21,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:19:21,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:19:21,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:19:21,009 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:19:21,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:19:21,010 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:19:21,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:19:21,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:19:21,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:19:21,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:19:21,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:19:21,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:19:21,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:19:21,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:19:21,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:19:21,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:19:21,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:19:21,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:19:21,013 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:19:21,013 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 17:19:21,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:19:21,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:19:21,558 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:19:21,560 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:19:21,560 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:19:21,562 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condmf.c [2020-09-24 17:19:21,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e77b4045/aa9572f264684544a0288510bb10718d/FLAGa712ae8a3 [2020-09-24 17:19:22,236 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:19:22,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condmf.c [2020-09-24 17:19:22,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e77b4045/aa9572f264684544a0288510bb10718d/FLAGa712ae8a3 [2020-09-24 17:19:22,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e77b4045/aa9572f264684544a0288510bb10718d [2020-09-24 17:19:22,567 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:19:22,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:19:22,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:19:22,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:19:22,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:19:22,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:19:22" (1/1) ... [2020-09-24 17:19:22,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@260ceee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:22, skipping insertion in model container [2020-09-24 17:19:22,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:19:22" (1/1) ... [2020-09-24 17:19:22,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:19:22,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:19:22,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:19:22,856 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:19:22,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:19:22,898 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:19:22,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:22 WrapperNode [2020-09-24 17:19:22,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:19:22,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:19:22,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:19:22,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:19:23,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:22" (1/1) ... [2020-09-24 17:19:23,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:22" (1/1) ... [2020-09-24 17:19:23,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:22" (1/1) ... [2020-09-24 17:19:23,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:22" (1/1) ... [2020-09-24 17:19:23,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:22" (1/1) ... [2020-09-24 17:19:23,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:22" (1/1) ... [2020-09-24 17:19:23,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:22" (1/1) ... [2020-09-24 17:19:23,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:19:23,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:19:23,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:19:23,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:19:23,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:22" (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 [2020-09-24 17:19:23,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:19:23,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:19:23,108 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 17:19:23,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 17:19:23,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:19:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:19:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 17:19:23,109 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 17:19:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 17:19:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:19:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 17:19:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:19:23,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 17:19:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 17:19:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 17:19:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:19:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:19:23,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:19:23,518 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:19:23,519 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 17:19:23,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:19:23 BoogieIcfgContainer [2020-09-24 17:19:23,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:19:23,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:19:23,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:19:23,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:19:23,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:19:22" (1/3) ... [2020-09-24 17:19:23,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c228fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:19:23, skipping insertion in model container [2020-09-24 17:19:23,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:19:22" (2/3) ... [2020-09-24 17:19:23,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c228fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:19:23, skipping insertion in model container [2020-09-24 17:19:23,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:19:23" (3/3) ... [2020-09-24 17:19:23,536 INFO L109 eAbstractionObserver]: Analyzing ICFG condmf.c [2020-09-24 17:19:23,548 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:19:23,560 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:19:23,582 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:19:23,623 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:19:23,623 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:19:23,623 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:19:23,623 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:19:23,623 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:19:23,623 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:19:23,624 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:19:23,624 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:19:23,645 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-09-24 17:19:23,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 17:19:23,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:19:23,654 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] [2020-09-24 17:19:23,654 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:19:23,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:19:23,661 INFO L82 PathProgramCache]: Analyzing trace with hash 246632013, now seen corresponding path program 1 times [2020-09-24 17:19:23,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:19:23,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205533535] [2020-09-24 17:19:23,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:19:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:19:23,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:23,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:24,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:24,735 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:19:24,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 17:19:24,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:19:24,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 906 [2020-09-24 17:19:24,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:19:24,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:19:24,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:19:24,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 17:19:24,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:19:24,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:19:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:19:24,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:24,835 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:19:24,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 17:19:24,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:19:24,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:19:24,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:19:24,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:19:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:19:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:19:24,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:19:24,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 17:19:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:19:24,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:19:24,863 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:19:24,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:19:24,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:19:24,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 17:19:24,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:19:24,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:19:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:19:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:19:24,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:19:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:19:24,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205533535] [2020-09-24 17:19:24,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:19:24,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:19:24,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684665441] [2020-09-24 17:19:24,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:19:24,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:19:24,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:19:24,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:19:24,912 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 5 states. [2020-09-24 17:19:25,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:19:25,214 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2020-09-24 17:19:25,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 17:19:25,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-24 17:19:25,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:19:25,229 INFO L225 Difference]: With dead ends: 108 [2020-09-24 17:19:25,229 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 17:19:25,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:19:25,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 17:19:25,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-09-24 17:19:25,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 17:19:25,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-09-24 17:19:25,293 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 31 [2020-09-24 17:19:25,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:19:25,294 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-09-24 17:19:25,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:19:25,294 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-09-24 17:19:25,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 17:19:25,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:19:25,297 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, 1, 1] [2020-09-24 17:19:25,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:19:25,297 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:19:25,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:19:25,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1554786686, now seen corresponding path program 1 times [2020-09-24 17:19:25,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:19:25,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691701238] [2020-09-24 17:19:25,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:19:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 17:19:25,331 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 17:19:25,332 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 17:19:25,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:19:25,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:19:25 BoogieIcfgContainer [2020-09-24 17:19:25,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:19:25,366 INFO L168 Benchmark]: Toolchain (without parser) took 2795.58 ms. Allocated memory was 146.3 MB in the beginning and 233.8 MB in the end (delta: 87.6 MB). Free memory was 102.8 MB in the beginning and 186.9 MB in the end (delta: -84.1 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-09-24 17:19:25,367 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 17:19:25,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.75 ms. Allocated memory is still 146.3 MB. Free memory was 102.1 MB in the beginning and 91.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-24 17:19:25,370 INFO L168 Benchmark]: Boogie Preprocessor took 135.98 ms. Allocated memory was 146.3 MB in the beginning and 201.3 MB in the end (delta: 55.1 MB). Free memory was 91.9 MB in the beginning and 179.3 MB in the end (delta: -87.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-24 17:19:25,371 INFO L168 Benchmark]: RCFGBuilder took 488.20 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 160.3 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-09-24 17:19:25,372 INFO L168 Benchmark]: TraceAbstraction took 1836.64 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 159.6 MB in the beginning and 186.9 MB in the end (delta: -27.2 MB). Peak memory consumption was 5.3 MB. Max. memory is 7.1 GB. [2020-09-24 17:19:25,376 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 326.75 ms. Allocated memory is still 146.3 MB. Free memory was 102.1 MB in the beginning and 91.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.98 ms. Allocated memory was 146.3 MB in the beginning and 201.3 MB in the end (delta: 55.1 MB). Free memory was 91.9 MB in the beginning and 179.3 MB in the end (delta: -87.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 488.20 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 160.3 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1836.64 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 159.6 MB in the beginning and 186.9 MB in the end (delta: -27.2 MB). Peak memory consumption was 5.3 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] int *a = malloc(sizeof(int)*N); [L28] i = 0 [L28] COND TRUE i < N [L30] a[i] = 0 [L28] i++ [L28] COND FALSE !(i < N) [L33] i = 0 [L33] COND TRUE i < N [L35] COND TRUE N%2 == 1 [L37] EXPR a[i] [L37] a[i] = a[i] + 2 [L33] i++ [L33] COND FALSE !(i < N) [L45] i = 0 [L45] COND TRUE i < N [L47] EXPR a[i] [L47] CALL __VERIFIER_assert(a[i] % 2 == N % 2) [L13] COND TRUE !(cond) [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 72 SDslu, 37 SDs, 0 SdLazy, 96 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 1800 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...