/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/res1of.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:25:23,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:25:23,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:25:23,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:25:23,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:25:23,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:25:23,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:25:23,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:25:23,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:25:23,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:25:23,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:25:23,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:25:23,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:25:23,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:25:23,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:25:23,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:25:23,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:25:23,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:25:23,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:25:23,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:25:23,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:25:23,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:25:23,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:25:23,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:25:23,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:25:23,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:25:23,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:25:23,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:25:23,829 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 [2021-02-21 16:25:23,887 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:25:23,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:25:23,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:25:23,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:25:23,894 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:25:23,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:25:23,894 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:25:23,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:25:23,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:25:23,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:25:23,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:25:23,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:25:23,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:25:23,897 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:25:23,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:25:23,898 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:25:23,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:25:23,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:25:23,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:25:23,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:25:23,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:25:23,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:25:23,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:25:23,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:25:23,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:25:23,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:25:23,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:25:23,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:25:23,901 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:25:24,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:25:24,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:25:24,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:25:24,430 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:25:24,431 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:25:24,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1of.c [2021-02-21 16:25:24,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c4e0bf5e/575bc422dee84238ac85f490b51bde78/FLAGe9e17be2e [2021-02-21 16:25:25,235 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:25:25,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res1of.c [2021-02-21 16:25:25,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c4e0bf5e/575bc422dee84238ac85f490b51bde78/FLAGe9e17be2e [2021-02-21 16:25:25,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c4e0bf5e/575bc422dee84238ac85f490b51bde78 [2021-02-21 16:25:25,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:25:25,596 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:25:25,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:25,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:25:25,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:25:25,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:25" (1/1) ... [2021-02-21 16:25:25,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f58da69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:25, skipping insertion in model container [2021-02-21 16:25:25,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:25" (1/1) ... [2021-02-21 16:25:25,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:25:25,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:25:25,847 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/res1of.c[589,602] [2021-02-21 16:25:25,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:25,892 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:25:25,904 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/res1of.c[589,602] [2021-02-21 16:25:25,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:25,938 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:25:25,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:25 WrapperNode [2021-02-21 16:25:25,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:25,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:25:25,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:25:25,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:25:25,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:25" (1/1) ... [2021-02-21 16:25:25,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:25" (1/1) ... [2021-02-21 16:25:25,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:25" (1/1) ... [2021-02-21 16:25:25,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:25" (1/1) ... [2021-02-21 16:25:25,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:25" (1/1) ... [2021-02-21 16:25:25,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:25" (1/1) ... [2021-02-21 16:25:25,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:25" (1/1) ... [2021-02-21 16:25:25,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:25:25,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:25:25,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:25:25,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:25:25,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:25" (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 [2021-02-21 16:25:26,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:25:26,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:25:26,105 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:25:26,105 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 16:25:26,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 16:25:26,106 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:25:26,106 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:25:26,106 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:25:26,106 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:25:26,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:25:26,106 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 16:25:26,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:25:26,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:25:26,107 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 16:25:26,107 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:25:26,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 16:25:26,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:25:26,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:25:26,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:25:26,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:25:26,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:25:26,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:25:26,506 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:25:26,507 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-21 16:25:26,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:26 BoogieIcfgContainer [2021-02-21 16:25:26,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:25:26,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:25:26,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:25:26,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:25:26,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:25:25" (1/3) ... [2021-02-21 16:25:26,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6e8b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:26, skipping insertion in model container [2021-02-21 16:25:26,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:25" (2/3) ... [2021-02-21 16:25:26,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6e8b3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:26, skipping insertion in model container [2021-02-21 16:25:26,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:26" (3/3) ... [2021-02-21 16:25:26,527 INFO L111 eAbstractionObserver]: Analyzing ICFG res1of.c [2021-02-21 16:25:26,535 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:25:26,540 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:25:26,563 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:25:26,648 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:25:26,648 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:25:26,649 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:25:26,649 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:25:26,649 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:25:26,649 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:25:26,649 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:25:26,649 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:25:26,693 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2021-02-21 16:25:26,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-21 16:25:26,702 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:26,703 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] [2021-02-21 16:25:26,703 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:26,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:26,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1106110167, now seen corresponding path program 1 times [2021-02-21 16:25:26,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:26,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777221432] [2021-02-21 16:25:26,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:27,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:27,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:27,096 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:27,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:27,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:25:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:27,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:27,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:27,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:25:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:27,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:27,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:27,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:27,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:27,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:25:27,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777221432] [2021-02-21 16:25:27,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:27,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:25:27,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430320698] [2021-02-21 16:25:27,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:25:27,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:27,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:25:27,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:25:27,245 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2021-02-21 16:25:27,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:27,359 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2021-02-21 16:25:27,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:25:27,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2021-02-21 16:25:27,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:27,370 INFO L225 Difference]: With dead ends: 64 [2021-02-21 16:25:27,370 INFO L226 Difference]: Without dead ends: 30 [2021-02-21 16:25:27,374 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 [2021-02-21 16:25:27,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-02-21 16:25:27,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-02-21 16:25:27,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-02-21 16:25:27,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-02-21 16:25:27,427 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2021-02-21 16:25:27,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:27,428 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-02-21 16:25:27,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:25:27,428 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-02-21 16:25:27,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-21 16:25:27,429 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:27,430 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] [2021-02-21 16:25:27,430 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:25:27,430 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:27,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:27,431 INFO L82 PathProgramCache]: Analyzing trace with hash 85041813, now seen corresponding path program 1 times [2021-02-21 16:25:27,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:27,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357281059] [2021-02-21 16:25:27,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:27,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:27,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:27,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:27,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:25:27,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:27,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:25:27,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:27,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:27,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:25:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:27,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:27,648 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:27,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:25:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:27,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:27,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:27,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:25:27,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357281059] [2021-02-21 16:25:27,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:27,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:25:27,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433537670] [2021-02-21 16:25:27,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:25:27,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:27,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:25:27,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:25:27,687 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2021-02-21 16:25:27,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:27,926 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2021-02-21 16:25:27,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:25:27,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2021-02-21 16:25:27,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:27,934 INFO L225 Difference]: With dead ends: 53 [2021-02-21 16:25:27,935 INFO L226 Difference]: Without dead ends: 38 [2021-02-21 16:25:27,942 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 [2021-02-21 16:25:27,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-21 16:25:27,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2021-02-21 16:25:27,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-02-21 16:25:27,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2021-02-21 16:25:27,963 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 25 [2021-02-21 16:25:27,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:27,964 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2021-02-21 16:25:27,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:25:27,964 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2021-02-21 16:25:27,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-21 16:25:27,965 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:27,966 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] [2021-02-21 16:25:27,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:25:27,966 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:27,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:27,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1689002269, now seen corresponding path program 1 times [2021-02-21 16:25:27,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:27,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284035675] [2021-02-21 16:25:27,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:28,034 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:28,079 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:28,121 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:25:28,121 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:25:28,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 16:25:28,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:25:28 BoogieIcfgContainer [2021-02-21 16:25:28,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:25:28,209 INFO L168 Benchmark]: Toolchain (without parser) took 2625.25 ms. Allocated memory is still 153.1 MB. Free memory was 129.1 MB in the beginning and 58.9 MB in the end (delta: 70.2 MB). Peak memory consumption was 70.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:28,210 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 153.1 MB. Free memory is still 131.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:25:28,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.42 ms. Allocated memory is still 153.1 MB. Free memory was 127.9 MB in the beginning and 117.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:28,212 INFO L168 Benchmark]: Boogie Preprocessor took 45.05 ms. Allocated memory is still 153.1 MB. Free memory was 117.8 MB in the beginning and 116.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:28,213 INFO L168 Benchmark]: RCFGBuilder took 522.76 ms. Allocated memory is still 153.1 MB. Free memory was 116.2 MB in the beginning and 135.9 MB in the end (delta: -19.7 MB). Peak memory consumption was 21.9 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:28,213 INFO L168 Benchmark]: TraceAbstraction took 1694.47 ms. Allocated memory is still 153.1 MB. Free memory was 135.4 MB in the beginning and 58.9 MB in the end (delta: 76.5 MB). Peak memory consumption was 75.5 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:28,217 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 153.1 MB. Free memory is still 131.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 339.42 ms. Allocated memory is still 153.1 MB. Free memory was 127.9 MB in the beginning and 117.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.05 ms. Allocated memory is still 153.1 MB. Free memory was 117.8 MB in the beginning and 116.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 522.76 ms. Allocated memory is still 153.1 MB. Free memory was 116.2 MB in the beginning and 135.9 MB in the end (delta: -19.7 MB). Peak memory consumption was 21.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1694.47 ms. Allocated memory is still 153.1 MB. Free memory was 135.4 MB in the beginning and 58.9 MB in the end (delta: 76.5 MB). Peak memory consumption was 75.5 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); [L32] sum[0] = 0 [L33] i=0 VAL [\old(N)=0, a={-1:0}, b={-2:0}, i=0, malloc(sizeof(int)*N)={-2:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L33] COND TRUE i