/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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 0.1.25-177f698 [2020-08-21 23:05:52,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:05:52,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:05:52,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:05:52,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:05:52,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:05:52,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:05:52,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:05:52,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:05:52,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:05:52,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:05:52,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:05:52,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:05:52,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:05:52,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:05:52,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:05:52,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:05:52,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:05:52,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:05:52,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:05:52,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:05:52,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:05:52,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:05:52,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:05:52,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:05:52,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:05:52,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:05:52,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:05:52,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:05:52,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:05:52,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:05:52,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:05:52,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:05:52,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:05:52,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:05:52,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:05:52,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:05:52,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:05:52,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:05:52,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:05:52,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:05:52,452 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 23:05:52,476 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:05:52,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:05:52,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:05:52,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:05:52,478 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:05:52,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:05:52,478 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:05:52,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:05:52,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:05:52,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:05:52,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:05:52,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:05:52,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:05:52,479 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:05:52,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:05:52,480 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:05:52,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:05:52,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:05:52,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:05:52,481 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:05:52,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:05:52,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:05:52,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:05:52,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:05:52,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:05:52,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:05:52,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:05:52,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:05:52,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:05:52,482 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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-08-21 23:05:52,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:05:52,828 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:05:52,838 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:05:52,840 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:05:52,840 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:05:52,841 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condmf.c [2020-08-21 23:05:52,904 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd402d2dd/2cd8408a47794556acdbddf0dba2b3ef/FLAG057a9e45a [2020-08-21 23:05:53,360 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:05:53,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condmf.c [2020-08-21 23:05:53,368 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd402d2dd/2cd8408a47794556acdbddf0dba2b3ef/FLAG057a9e45a [2020-08-21 23:05:53,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd402d2dd/2cd8408a47794556acdbddf0dba2b3ef [2020-08-21 23:05:53,742 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:05:53,744 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:05:53,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:05:53,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:05:53,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:05:53,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:05:53" (1/1) ... [2020-08-21 23:05:53,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6179954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:05:53, skipping insertion in model container [2020-08-21 23:05:53,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:05:53" (1/1) ... [2020-08-21 23:05:53,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:05:53,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:05:53,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:05:54,003 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:05:54,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:05:54,040 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:05:54,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:05:54 WrapperNode [2020-08-21 23:05:54,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:05:54,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:05:54,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:05:54,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:05:54,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:05:54" (1/1) ... [2020-08-21 23:05:54,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:05:54" (1/1) ... [2020-08-21 23:05:54,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:05:54" (1/1) ... [2020-08-21 23:05:54,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:05:54" (1/1) ... [2020-08-21 23:05:54,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:05:54" (1/1) ... [2020-08-21 23:05:54,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:05:54" (1/1) ... [2020-08-21 23:05:54,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:05:54" (1/1) ... [2020-08-21 23:05:54,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:05:54,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:05:54,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:05:54,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:05:54,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:05:54" (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 23:05:54,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:05:54,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:05:54,230 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 23:05:54,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 23:05:54,230 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:05:54,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:05:54,231 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 23:05:54,231 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 23:05:54,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 23:05:54,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:05:54,231 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 23:05:54,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:05:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 23:05:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 23:05:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 23:05:54,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:05:54,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:05:54,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 23:05:54,501 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:05:54,501 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-21 23:05:54,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:05:54 BoogieIcfgContainer [2020-08-21 23:05:54,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:05:54,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:05:54,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:05:54,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:05:54,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:05:53" (1/3) ... [2020-08-21 23:05:54,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0d3773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:05:54, skipping insertion in model container [2020-08-21 23:05:54,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:05:54" (2/3) ... [2020-08-21 23:05:54,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0d3773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:05:54, skipping insertion in model container [2020-08-21 23:05:54,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:05:54" (3/3) ... [2020-08-21 23:05:54,515 INFO L109 eAbstractionObserver]: Analyzing ICFG condmf.c [2020-08-21 23:05:54,527 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:05:54,534 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:05:54,553 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:05:54,596 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:05:54,596 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:05:54,596 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:05:54,597 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:05:54,597 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:05:54,597 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:05:54,597 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:05:54,597 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:05:54,615 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-08-21 23:05:54,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 23:05:54,621 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:05:54,622 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] [2020-08-21 23:05:54,622 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:05:54,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:05:54,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1524373234, now seen corresponding path program 1 times [2020-08-21 23:05:54,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:05:54,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431018944] [2020-08-21 23:05:54,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:05:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:05:54,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:05:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:05:54,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:05:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:05:54,843 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 23:05:54,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431018944] [2020-08-21 23:05:54,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:05:54,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 23:05:54,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358855648] [2020-08-21 23:05:54,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 23:05:54,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:05:54,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 23:05:54,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:05:54,869 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-08-21 23:05:54,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:05:54,993 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2020-08-21 23:05:54,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 23:05:54,995 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-21 23:05:54,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:05:55,004 INFO L225 Difference]: With dead ends: 60 [2020-08-21 23:05:55,004 INFO L226 Difference]: Without dead ends: 30 [2020-08-21 23:05:55,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 23:05:55,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-21 23:05:55,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-21 23:05:55,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-21 23:05:55,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-21 23:05:55,054 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2020-08-21 23:05:55,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:05:55,055 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-21 23:05:55,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 23:05:55,056 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-21 23:05:55,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 23:05:55,057 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:05:55,057 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] [2020-08-21 23:05:55,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:05:55,058 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:05:55,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:05:55,059 INFO L82 PathProgramCache]: Analyzing trace with hash -2111179248, now seen corresponding path program 1 times [2020-08-21 23:05:55,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:05:55,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906461686] [2020-08-21 23:05:55,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:05:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:05:55,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:05:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:05:55,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:05:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:05:55,190 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 23:05:55,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906461686] [2020-08-21 23:05:55,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:05:55,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:05:55,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037382285] [2020-08-21 23:05:55,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:05:55,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:05:55,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:05:55,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:05:55,195 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2020-08-21 23:05:55,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:05:55,408 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2020-08-21 23:05:55,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 23:05:55,409 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-08-21 23:05:55,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:05:55,411 INFO L225 Difference]: With dead ends: 54 [2020-08-21 23:05:55,412 INFO L226 Difference]: Without dead ends: 39 [2020-08-21 23:05:55,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:05:55,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-21 23:05:55,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-08-21 23:05:55,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-21 23:05:55,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-21 23:05:55,427 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2020-08-21 23:05:55,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:05:55,427 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-21 23:05:55,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:05:55,427 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-21 23:05:55,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 23:05:55,428 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:05:55,429 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] [2020-08-21 23:05:55,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:05:55,429 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:05:55,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:05:55,429 INFO L82 PathProgramCache]: Analyzing trace with hash 373909448, now seen corresponding path program 1 times [2020-08-21 23:05:55,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:05:55,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533585410] [2020-08-21 23:05:55,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:05:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 23:05:55,482 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 23:05:55,483 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 23:05:55,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:05:55,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:05:55 BoogieIcfgContainer [2020-08-21 23:05:55,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 23:05:55,508 INFO L168 Benchmark]: Toolchain (without parser) took 1762.90 ms. Allocated memory was 147.8 MB in the beginning and 203.4 MB in the end (delta: 55.6 MB). Free memory was 103.5 MB in the beginning and 107.7 MB in the end (delta: -4.2 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. [2020-08-21 23:05:55,509 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 121.9 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-08-21 23:05:55,510 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.04 ms. Allocated memory is still 147.8 MB. Free memory was 103.5 MB in the beginning and 93.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-21 23:05:55,511 INFO L168 Benchmark]: Boogie Preprocessor took 124.38 ms. Allocated memory was 147.8 MB in the beginning and 203.4 MB in the end (delta: 55.6 MB). Free memory was 93.1 MB in the beginning and 180.8 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-21 23:05:55,512 INFO L168 Benchmark]: RCFGBuilder took 340.08 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 165.0 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2020-08-21 23:05:55,513 INFO L168 Benchmark]: TraceAbstraction took 997.49 ms. Allocated memory is still 203.4 MB. Free memory was 164.0 MB in the beginning and 107.7 MB in the end (delta: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. [2020-08-21 23:05:55,517 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 121.9 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 296.04 ms. Allocated memory is still 147.8 MB. Free memory was 103.5 MB in the beginning and 93.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.38 ms. Allocated memory was 147.8 MB in the beginning and 203.4 MB in the end (delta: 55.6 MB). Free memory was 93.1 MB in the beginning and 180.8 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 340.08 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 165.0 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 997.49 ms. Allocated memory is still 203.4 MB. Free memory was 164.0 MB in the beginning and 107.7 MB in the end (delta: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] 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, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 52 SDslu, 11 SDs, 0 SdLazy, 84 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 1596 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...