/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ss2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:47:37,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:47:37,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:47:37,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:47:37,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:47:37,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:47:37,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:47:37,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:47:37,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:47:37,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:47:37,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:47:37,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:47:37,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:47:37,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:47:37,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:47:37,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:47:37,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:47:37,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:47:37,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:47:37,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:47:37,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:47:37,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:47:37,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:47:37,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:47:37,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:47:37,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 11:47:37,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 11:47:37,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 11:47:37,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 11:47:37,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 11:47:37,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 11:47:37,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 11:47:37,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 11:47:37,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:47:37,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:47:37,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:47:37,840 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 11:47:37,859 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:47:37,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:47:37,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:47:37,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:47:37,862 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:47:37,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:47:37,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:47:37,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:47:37,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:47:37,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:47:37,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:47:37,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:47:37,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:47:37,864 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:47:37,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:47:37,864 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:47:37,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:47:37,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:47:37,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:47:37,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:47:37,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:47:37,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:47:37,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:47:37,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:47:37,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:47:37,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:47:37,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:37,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:47:37,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:47:37,869 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:47:38,150 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:47:38,172 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:47:38,176 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:47:38,178 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:47:38,181 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:47:38,182 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss2f.c [2020-07-20 11:47:38,267 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71b3a40e0/8054c96354f54ff08bcef85c922fa469/FLAG68cbcf644 [2020-07-20 11:47:38,789 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:47:38,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss2f.c [2020-07-20 11:47:38,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71b3a40e0/8054c96354f54ff08bcef85c922fa469/FLAG68cbcf644 [2020-07-20 11:47:39,150 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71b3a40e0/8054c96354f54ff08bcef85c922fa469 [2020-07-20 11:47:39,162 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:47:39,165 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:47:39,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:47:39,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:47:39,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:47:39,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:47:39" (1/1) ... [2020-07-20 11:47:39,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dbc0a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:39, skipping insertion in model container [2020-07-20 11:47:39,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:47:39" (1/1) ... [2020-07-20 11:47:39,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:47:39,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:47:39,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:47:39,458 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:47:39,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:47:39,502 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:47:39,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:39 WrapperNode [2020-07-20 11:47:39,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:47:39,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:47:39,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:47:39,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:47:39,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:39" (1/1) ... [2020-07-20 11:47:39,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:39" (1/1) ... [2020-07-20 11:47:39,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:39" (1/1) ... [2020-07-20 11:47:39,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:39" (1/1) ... [2020-07-20 11:47:39,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:39" (1/1) ... [2020-07-20 11:47:39,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:39" (1/1) ... [2020-07-20 11:47:39,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:39" (1/1) ... [2020-07-20 11:47:39,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:47:39,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:47:39,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:47:39,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:47:39,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:47:39,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:47:39,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:47:39,707 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 11:47:39,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 11:47:39,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:47:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:47:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 11:47:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 11:47:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 11:47:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:47:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 11:47:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:47:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 11:47:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 11:47:39,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 11:47:39,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 11:47:39,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 11:47:39,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:47:39,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:47:40,025 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:47:40,026 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-07-20 11:47:40,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:47:40 BoogieIcfgContainer [2020-07-20 11:47:40,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:47:40,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:47:40,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:47:40,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:47:40,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:47:39" (1/3) ... [2020-07-20 11:47:40,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d1a85f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:47:40, skipping insertion in model container [2020-07-20 11:47:40,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:47:39" (2/3) ... [2020-07-20 11:47:40,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d1a85f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:47:40, skipping insertion in model container [2020-07-20 11:47:40,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:47:40" (3/3) ... [2020-07-20 11:47:40,048 INFO L109 eAbstractionObserver]: Analyzing ICFG ss2f.c [2020-07-20 11:47:40,072 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:47:40,087 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:47:40,111 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:47:40,137 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:47:40,137 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:47:40,137 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:47:40,138 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:47:40,138 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:47:40,138 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:47:40,138 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:47:40,138 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:47:40,159 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-07-20 11:47:40,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 11:47:40,166 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:47:40,167 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] [2020-07-20 11:47:40,168 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:47:40,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:47:40,174 INFO L82 PathProgramCache]: Analyzing trace with hash -96589013, now seen corresponding path program 1 times [2020-07-20 11:47:40,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:47:40,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494608746] [2020-07-20 11:47:40,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:47:40,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 11:47:40,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:47:40,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:47:40,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:47:40,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494608746] [2020-07-20 11:47:40,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:47:40,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 11:47:40,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796923813] [2020-07-20 11:47:40,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 11:47:40,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:47:40,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 11:47:40,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:47:40,351 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2020-07-20 11:47:40,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:47:40,379 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2020-07-20 11:47:40,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 11:47:40,381 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2020-07-20 11:47:40,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:47:40,391 INFO L225 Difference]: With dead ends: 82 [2020-07-20 11:47:40,391 INFO L226 Difference]: Without dead ends: 41 [2020-07-20 11:47:40,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:47:40,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-20 11:47:40,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-20 11:47:40,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-20 11:47:40,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-07-20 11:47:40,438 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 30 [2020-07-20 11:47:40,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:47:40,439 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-07-20 11:47:40,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 11:47:40,439 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-07-20 11:47:40,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 11:47:40,441 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:47:40,441 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] [2020-07-20 11:47:40,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:40,648 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:47:40,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:47:40,649 INFO L82 PathProgramCache]: Analyzing trace with hash -552343525, now seen corresponding path program 1 times [2020-07-20 11:47:40,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:47:40,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452349287] [2020-07-20 11:47:40,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:47:40,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 11:47:40,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:47:40,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:47:40,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:47:40,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452349287] [2020-07-20 11:47:40,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:47:40,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 11:47:40,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318210435] [2020-07-20 11:47:40,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 11:47:40,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:47:40,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 11:47:40,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:47:40,833 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 4 states. [2020-07-20 11:47:40,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:47:40,961 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2020-07-20 11:47:40,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 11:47:40,962 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-07-20 11:47:40,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:47:40,965 INFO L225 Difference]: With dead ends: 83 [2020-07-20 11:47:40,965 INFO L226 Difference]: Without dead ends: 57 [2020-07-20 11:47:40,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 11:47:40,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-20 11:47:40,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2020-07-20 11:47:40,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-20 11:47:40,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-07-20 11:47:40,983 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 30 [2020-07-20 11:47:40,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:47:40,984 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-07-20 11:47:40,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 11:47:40,984 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-07-20 11:47:40,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-20 11:47:40,986 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:47:40,986 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] [2020-07-20 11:47:41,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:41,201 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:47:41,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:47:41,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1488976591, now seen corresponding path program 1 times [2020-07-20 11:47:41,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:47:41,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552760325] [2020-07-20 11:47:41,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:41,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:47:41,307 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:47:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:47:41,351 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:47:41,392 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 11:47:41,393 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 11:47:41,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:47:41,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:47:41 BoogieIcfgContainer [2020-07-20 11:47:41,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:47:41,667 INFO L168 Benchmark]: Toolchain (without parser) took 2502.61 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 87.9 MB in the end (delta: 13.6 MB). Peak memory consumption was 77.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:47:41,668 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-20 11:47:41,669 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.18 ms. Allocated memory is still 136.8 MB. Free memory was 101.1 MB in the beginning and 90.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:47:41,670 INFO L168 Benchmark]: Boogie Preprocessor took 138.67 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 90.2 MB in the beginning and 178.1 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:47:41,671 INFO L168 Benchmark]: RCFGBuilder took 388.54 ms. Allocated memory is still 200.8 MB. Free memory was 178.1 MB in the beginning and 157.9 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-07-20 11:47:41,672 INFO L168 Benchmark]: TraceAbstraction took 1631.04 ms. Allocated memory is still 200.8 MB. Free memory was 157.2 MB in the beginning and 87.9 MB in the end (delta: 69.3 MB). Peak memory consumption was 69.3 MB. Max. memory is 7.1 GB. [2020-07-20 11:47:41,676 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 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 336.18 ms. Allocated memory is still 136.8 MB. Free memory was 101.1 MB in the beginning and 90.2 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.67 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 90.2 MB in the beginning and 178.1 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 388.54 ms. Allocated memory is still 200.8 MB. Free memory was 178.1 MB in the beginning and 157.9 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1631.04 ms. Allocated memory is still 200.8 MB. Free memory was 157.2 MB in the beginning and 87.9 MB in the end (delta: 69.3 MB). Peak memory consumption was 69.3 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; VAL [\old(N)=5, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={2:0}] [L30] COND TRUE i