/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/res2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:51:53,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:51:53,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:51:53,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:51:53,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:51:53,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:51:53,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:51:53,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:51:53,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:51:53,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:51:53,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:51:53,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:51:53,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:51:53,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:51:53,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:51:53,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:51:53,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:51:53,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:51:53,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:51:53,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:51:53,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:51:53,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:51:53,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:51:53,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:51:53,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:51:53,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:51:53,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:51:53,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:51:53,859 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 [2021-02-23 13:51:53,910 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:51:53,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:51:53,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:51:53,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:51:53,916 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:51:53,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:51:53,916 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:51:53,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:51:53,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:51:53,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:51:53,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:51:53,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:51:53,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:51:53,919 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:51:53,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:51:53,919 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:51:53,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:51:53,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:51:53,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:51:53,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:51:53,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:51:53,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:51:53,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:51:53,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:51:53,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:51:53,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:51:53,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:51:53,922 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:51:53,922 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:51:54,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:51:54,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:51:54,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:51:54,354 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:51:54,355 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:51:54,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2f.c [2021-02-23 13:51:54,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cc1a5a86/4a6d887495fa4e1b87c929f6f589b857/FLAG51a883308 [2021-02-23 13:51:54,934 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:51:54,935 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res2f.c [2021-02-23 13:51:54,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cc1a5a86/4a6d887495fa4e1b87c929f6f589b857/FLAG51a883308 [2021-02-23 13:51:55,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cc1a5a86/4a6d887495fa4e1b87c929f6f589b857 [2021-02-23 13:51:55,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:51:55,335 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:51:55,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:55,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:51:55,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:51:55,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:55" (1/1) ... [2021-02-23 13:51:55,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603bbd99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:55, skipping insertion in model container [2021-02-23 13:51:55,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:55" (1/1) ... [2021-02-23 13:51:55,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:51:55,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:51:55,591 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res2f.c[588,601] [2021-02-23 13:51:55,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:55,652 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:51:55,670 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res2f.c[588,601] [2021-02-23 13:51:55,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:55,724 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:51:55,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:55 WrapperNode [2021-02-23 13:51:55,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:55,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:51:55,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:51:55,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:51:55,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:55" (1/1) ... [2021-02-23 13:51:55,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:55" (1/1) ... [2021-02-23 13:51:55,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:55" (1/1) ... [2021-02-23 13:51:55,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:55" (1/1) ... [2021-02-23 13:51:55,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:55" (1/1) ... [2021-02-23 13:51:55,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:55" (1/1) ... [2021-02-23 13:51:55,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:55" (1/1) ... [2021-02-23 13:51:55,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:51:55,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:51:55,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:51:55,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:51:55,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:55" (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 [2021-02-23 13:51:55,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:51:55,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:51:55,858 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:51:55,858 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 13:51:55,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:51:55,859 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:51:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:51:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:51:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:51:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:51:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 13:51:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:51:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:51:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 13:51:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:51:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 13:51:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:51:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:51:55,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:51:55,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:51:55,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:51:55,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:51:56,315 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:51:56,316 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-23 13:51:56,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:51:56 BoogieIcfgContainer [2021-02-23 13:51:56,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:51:56,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:51:56,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:51:56,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:51:56,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:51:55" (1/3) ... [2021-02-23 13:51:56,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5f215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:51:56, skipping insertion in model container [2021-02-23 13:51:56,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:55" (2/3) ... [2021-02-23 13:51:56,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5f215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:51:56, skipping insertion in model container [2021-02-23 13:51:56,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:51:56" (3/3) ... [2021-02-23 13:51:56,327 INFO L111 eAbstractionObserver]: Analyzing ICFG res2f.c [2021-02-23 13:51:56,333 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:51:56,338 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:51:56,356 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:51:56,381 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:51:56,382 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:51:56,382 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:51:56,382 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:51:56,382 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:51:56,382 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:51:56,383 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:51:56,383 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:51:56,400 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2021-02-23 13:51:56,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-23 13:51:56,409 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:56,410 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] [2021-02-23 13:51:56,410 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:56,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:56,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1259377407, now seen corresponding path program 1 times [2021-02-23 13:51:56,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:56,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489189772] [2021-02-23 13:51:56,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:56,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:56,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:56,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:56,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:56,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:56,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:56,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:56,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:56,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:56,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:56,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:56,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:56,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:51:56,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489189772] [2021-02-23 13:51:56,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:56,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 13:51:56,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180784600] [2021-02-23 13:51:56,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 13:51:56,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:56,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 13:51:56,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:51:56,819 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2021-02-23 13:51:56,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:56,929 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2021-02-23 13:51:56,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:51:56,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2021-02-23 13:51:56,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:56,940 INFO L225 Difference]: With dead ends: 76 [2021-02-23 13:51:56,940 INFO L226 Difference]: Without dead ends: 36 [2021-02-23 13:51:56,943 INFO L677 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 [2021-02-23 13:51:56,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-02-23 13:51:56,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-02-23 13:51:56,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-02-23 13:51:56,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2021-02-23 13:51:56,987 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 29 [2021-02-23 13:51:56,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:56,987 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2021-02-23 13:51:56,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 13:51:56,988 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2021-02-23 13:51:56,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-23 13:51:56,989 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:56,989 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] [2021-02-23 13:51:56,989 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:51:56,990 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:56,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:56,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1596973367, now seen corresponding path program 1 times [2021-02-23 13:51:56,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:56,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263632372] [2021-02-23 13:51:56,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:57,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:57,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:57,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:57,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:57,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:57,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:57,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:57,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:57,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:57,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:57,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:57,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:57,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:57,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:57,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:51:57,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263632372] [2021-02-23 13:51:57,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:57,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 13:51:57,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537079131] [2021-02-23 13:51:57,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 13:51:57,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:57,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 13:51:57,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:51:57,157 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 5 states. [2021-02-23 13:51:57,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:57,419 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2021-02-23 13:51:57,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 13:51:57,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2021-02-23 13:51:57,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:57,427 INFO L225 Difference]: With dead ends: 69 [2021-02-23 13:51:57,428 INFO L226 Difference]: Without dead ends: 48 [2021-02-23 13:51:57,434 INFO L677 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 [2021-02-23 13:51:57,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-02-23 13:51:57,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2021-02-23 13:51:57,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-02-23 13:51:57,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2021-02-23 13:51:57,458 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 29 [2021-02-23 13:51:57,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:57,458 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2021-02-23 13:51:57,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 13:51:57,459 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2021-02-23 13:51:57,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-23 13:51:57,460 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:57,460 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] [2021-02-23 13:51:57,461 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:51:57,461 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:57,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:57,462 INFO L82 PathProgramCache]: Analyzing trace with hash 378806037, now seen corresponding path program 1 times [2021-02-23 13:51:57,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:57,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935504726] [2021-02-23 13:51:57,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:51:57,590 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:51:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:51:57,644 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:51:57,737 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:51:57,738 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:51:57,738 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 13:51:57,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:51:57 BoogieIcfgContainer [2021-02-23 13:51:57,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:51:57,838 INFO L168 Benchmark]: Toolchain (without parser) took 2516.72 ms. Allocated memory was 153.1 MB in the beginning and 212.9 MB in the end (delta: 59.8 MB). Free memory was 127.4 MB in the beginning and 188.1 MB in the end (delta: -60.7 MB). Peak memory consumption was 80.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:57,838 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory is still 125.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:51:57,839 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.52 ms. Allocated memory is still 153.1 MB. Free memory was 126.2 MB in the beginning and 116.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:57,840 INFO L168 Benchmark]: Boogie Preprocessor took 41.57 ms. Allocated memory is still 153.1 MB. Free memory was 115.9 MB in the beginning and 114.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:57,841 INFO L168 Benchmark]: RCFGBuilder took 550.43 ms. Allocated memory is still 153.1 MB. Free memory was 114.1 MB in the beginning and 130.6 MB in the end (delta: -16.5 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:57,842 INFO L168 Benchmark]: TraceAbstraction took 1516.23 ms. Allocated memory was 153.1 MB in the beginning and 212.9 MB in the end (delta: 59.8 MB). Free memory was 130.1 MB in the beginning and 188.1 MB in the end (delta: -58.1 MB). Peak memory consumption was 83.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:57,846 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory is still 125.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 387.52 ms. Allocated memory is still 153.1 MB. Free memory was 126.2 MB in the beginning and 116.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.57 ms. Allocated memory is still 153.1 MB. Free memory was 115.9 MB in the beginning and 114.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 550.43 ms. Allocated memory is still 153.1 MB. Free memory was 114.1 MB in the beginning and 130.6 MB in the end (delta: -16.5 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1516.23 ms. Allocated memory was 153.1 MB in the beginning and 212.9 MB in the end (delta: 59.8 MB). Free memory was 130.1 MB in the beginning and 188.1 MB in the end (delta: -58.1 MB). Peak memory consumption was 83.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L30] int *b = malloc(sizeof(int)*N); [L31] int *c = malloc(sizeof(int)*N); [L33] sum[0] = 1 [L34] i=0 VAL [\old(N)=0, a={-1:0}, b={-2:0}, c={5:0}, i=0, malloc(sizeof(int)*N)={5:0}, malloc(sizeof(int)*N)={-1:0}, malloc(sizeof(int)*N)={-2:0}, N=1, sum={7:0}] [L34] COND TRUE i