/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/eqn2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:28:08,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:28:08,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:28:08,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:28:08,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:28:08,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:28:08,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:28:08,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:28:08,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:28:08,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:28:08,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:28:08,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:28:08,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:28:08,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:28:08,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:28:08,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:28:08,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:28:08,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:28:08,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:28:08,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:28:08,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:28:08,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:28:08,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:28:08,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:28:08,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:28:08,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:28:08,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:28:08,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:28:08,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:28:08,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:28:08,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:28:08,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:28:08,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:28:08,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:28:08,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:28:08,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:28:08,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:28:08,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:28:08,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:28:08,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:28:08,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:28:08,742 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 [2020-09-21 10:28:08,768 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:28:08,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:28:08,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:28:08,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:28:08,770 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:28:08,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:28:08,771 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:28:08,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:28:08,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:28:08,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:28:08,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:28:08,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:28:08,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:28:08,773 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:28:08,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:28:08,773 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:28:08,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:28:08,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:28:08,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:28:08,774 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:28:08,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:28:08,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:28:08,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:28:08,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:28:08,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:28:08,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:28:08,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:28:08,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:28:08,776 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:28:08,776 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 -> false [2020-09-21 10:28:09,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:28:09,253 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:28:09,257 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:28:09,259 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:28:09,260 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:28:09,261 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn2f.c [2020-09-21 10:28:09,342 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3cc8c4b3e/3a632cd118a5433fbe1cc3266db4a63a/FLAGfdc8798d3 [2020-09-21 10:28:09,929 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:28:09,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/eqn2f.c [2020-09-21 10:28:09,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3cc8c4b3e/3a632cd118a5433fbe1cc3266db4a63a/FLAGfdc8798d3 [2020-09-21 10:28:10,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3cc8c4b3e/3a632cd118a5433fbe1cc3266db4a63a [2020-09-21 10:28:10,200 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:28:10,205 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:28:10,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:28:10,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:28:10,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:28:10,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:28:10" (1/1) ... [2020-09-21 10:28:10,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@434f45a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:10, skipping insertion in model container [2020-09-21 10:28:10,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:28:10" (1/1) ... [2020-09-21 10:28:10,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:28:10,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:28:10,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:28:10,541 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:28:10,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:28:10,592 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:28:10,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:10 WrapperNode [2020-09-21 10:28:10,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:28:10,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:28:10,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:28:10,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:28:10,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:10" (1/1) ... [2020-09-21 10:28:10,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:10" (1/1) ... [2020-09-21 10:28:10,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:10" (1/1) ... [2020-09-21 10:28:10,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:10" (1/1) ... [2020-09-21 10:28:10,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:10" (1/1) ... [2020-09-21 10:28:10,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:10" (1/1) ... [2020-09-21 10:28:10,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:10" (1/1) ... [2020-09-21 10:28:10,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:28:10,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:28:10,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:28:10,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:28:10,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:10" (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 [2020-09-21 10:28:10,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:28:10,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:28:10,813 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 10:28:10,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 10:28:10,813 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:28:10,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:28:10,814 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 10:28:10,814 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 10:28:10,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 10:28:10,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:28:10,815 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:28:10,815 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:28:10,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:28:10,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:28:10,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:28:10,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:28:10,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:28:10,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:28:11,189 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:28:11,190 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-21 10:28:11,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:28:11 BoogieIcfgContainer [2020-09-21 10:28:11,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:28:11,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:28:11,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:28:11,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:28:11,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:28:10" (1/3) ... [2020-09-21 10:28:11,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2295423e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:28:11, skipping insertion in model container [2020-09-21 10:28:11,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:28:10" (2/3) ... [2020-09-21 10:28:11,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2295423e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:28:11, skipping insertion in model container [2020-09-21 10:28:11,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:28:11" (3/3) ... [2020-09-21 10:28:11,206 INFO L109 eAbstractionObserver]: Analyzing ICFG eqn2f.c [2020-09-21 10:28:11,218 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:28:11,228 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:28:11,249 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:28:11,282 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:28:11,282 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:28:11,282 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:28:11,282 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:28:11,282 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:28:11,283 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:28:11,283 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:28:11,283 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:28:11,305 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-21 10:28:11,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 10:28:11,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:11,314 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] [2020-09-21 10:28:11,314 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:11,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:11,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-09-21 10:28:11,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:11,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391852220] [2020-09-21 10:28:11,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:11,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:28:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:11,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 10:28:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:28:11,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:28:11,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391852220] [2020-09-21 10:28:11,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:28:11,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:28:11,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662063698] [2020-09-21 10:28:11,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:28:11,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:28:11,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:28:11,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:28:11,600 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-09-21 10:28:11,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:28:11,722 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-09-21 10:28:11,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:28:11,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-09-21 10:28:11,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:28:11,738 INFO L225 Difference]: With dead ends: 58 [2020-09-21 10:28:11,738 INFO L226 Difference]: Without dead ends: 29 [2020-09-21 10:28:11,743 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 [2020-09-21 10:28:11,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-09-21 10:28:11,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-09-21 10:28:11,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-21 10:28:11,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-09-21 10:28:11,802 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-09-21 10:28:11,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:28:11,802 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-09-21 10:28:11,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:28:11,803 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-09-21 10:28:11,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 10:28:11,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:28:11,804 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] [2020-09-21 10:28:11,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:28:11,805 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:28:11,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:28:11,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-09-21 10:28:11,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:28:11,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804971388] [2020-09-21 10:28:11,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:28:11,842 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-09-21 10:28:11,843 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-21 10:28:11,843 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:28:11,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:28:11,876 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-21 10:28:11,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:28:11 BoogieIcfgContainer [2020-09-21 10:28:11,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:28:11,881 INFO L168 Benchmark]: Toolchain (without parser) took 1677.68 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 130.8 MB in the end (delta: -29.3 MB). Peak memory consumption was 34.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:11,884 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 10:28:11,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.90 ms. Allocated memory is still 138.4 MB. Free memory was 100.8 MB in the beginning and 90.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:11,887 INFO L168 Benchmark]: Boogie Preprocessor took 139.57 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 90.5 MB in the beginning and 179.8 MB in the end (delta: -89.3 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:11,888 INFO L168 Benchmark]: RCFGBuilder took 462.53 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 162.2 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:11,890 INFO L168 Benchmark]: TraceAbstraction took 680.32 ms. Allocated memory is still 201.9 MB. Free memory was 161.5 MB in the beginning and 130.8 MB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. [2020-09-21 10:28:11,901 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 386.90 ms. Allocated memory is still 138.4 MB. Free memory was 100.8 MB in the beginning and 90.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.57 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 90.5 MB in the beginning and 179.8 MB in the end (delta: -89.3 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 462.53 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 162.2 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 680.32 ms. Allocated memory is still 201.9 MB. Free memory was 161.5 MB in the beginning and 130.8 MB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] a[0] = 8 [L30] b[0] = 1 [L32] i=1 [L32] COND FALSE !(i