/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/res2of.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:58:22,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:58:22,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:58:22,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:58:22,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:58:22,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:58:22,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:58:22,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:58:22,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:58:22,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:58:22,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:58:22,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:58:22,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:58:22,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:58:22,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:58:22,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:58:22,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:58:22,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:58:22,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:58:22,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:58:22,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:58:22,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:58:22,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:58:22,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:58:22,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:58:22,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:58:22,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:58:22,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:58:22,955 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 [2021-02-19 17:58:23,008 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:58:23,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:58:23,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:58:23,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:58:23,014 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:58:23,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:58:23,014 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:58:23,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:58:23,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:58:23,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:58:23,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:58:23,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:58:23,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:58:23,017 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:58:23,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:58:23,017 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:58:23,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:58:23,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:58:23,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:58:23,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:58:23,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:58:23,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:58:23,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:58:23,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:58:23,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:58:23,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:58:23,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:58:23,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:58:23,020 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:58:23,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:58:23,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:58:23,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:58:23,550 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:58:23,550 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:58:23,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2of.c [2021-02-19 17:58:23,644 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f9191694/6605da0437514bcf8d297f10bd7c57cb/FLAG2b861644c [2021-02-19 17:58:24,345 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:58:24,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res2of.c [2021-02-19 17:58:24,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f9191694/6605da0437514bcf8d297f10bd7c57cb/FLAG2b861644c [2021-02-19 17:58:24,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f9191694/6605da0437514bcf8d297f10bd7c57cb [2021-02-19 17:58:24,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:58:24,669 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:58:24,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:58:24,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:58:24,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:58:24,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:58:24" (1/1) ... [2021-02-19 17:58:24,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cc384e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:24, skipping insertion in model container [2021-02-19 17:58:24,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:58:24" (1/1) ... [2021-02-19 17:58:24,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:58:24,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:58:24,861 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/res2of.c[589,602] [2021-02-19 17:58:24,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:58:24,898 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:58:24,914 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/res2of.c[589,602] [2021-02-19 17:58:24,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:58:24,947 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:58:24,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:24 WrapperNode [2021-02-19 17:58:24,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:58:24,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:58:24,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:58:24,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:58:24,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:24" (1/1) ... [2021-02-19 17:58:24,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:24" (1/1) ... [2021-02-19 17:58:24,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:24" (1/1) ... [2021-02-19 17:58:24,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:24" (1/1) ... [2021-02-19 17:58:24,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:24" (1/1) ... [2021-02-19 17:58:24,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:24" (1/1) ... [2021-02-19 17:58:24,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:24" (1/1) ... [2021-02-19 17:58:25,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:58:25,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:58:25,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:58:25,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:58:25,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:24" (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 [2021-02-19 17:58:25,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:58:25,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:58:25,171 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:58:25,171 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-19 17:58:25,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-19 17:58:25,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:58:25,171 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:58:25,172 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:58:25,172 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:58:25,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:58:25,172 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-19 17:58:25,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-19 17:58:25,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 17:58:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-19 17:58:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:58:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-19 17:58:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:58:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:58:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:58:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:58:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:58:25,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:58:25,662 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:58:25,663 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-19 17:58:25,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:58:25 BoogieIcfgContainer [2021-02-19 17:58:25,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:58:25,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:58:25,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:58:25,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:58:25,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:58:24" (1/3) ... [2021-02-19 17:58:25,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fab067c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:58:25, skipping insertion in model container [2021-02-19 17:58:25,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:24" (2/3) ... [2021-02-19 17:58:25,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fab067c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:58:25, skipping insertion in model container [2021-02-19 17:58:25,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:58:25" (3/3) ... [2021-02-19 17:58:25,677 INFO L111 eAbstractionObserver]: Analyzing ICFG res2of.c [2021-02-19 17:58:25,686 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:58:25,691 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:58:25,713 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:58:25,758 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:58:25,758 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:58:25,759 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:58:25,759 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:58:25,759 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:58:25,760 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:58:25,760 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:58:25,760 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:58:25,789 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2021-02-19 17:58:25,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-19 17:58:25,797 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:25,798 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] [2021-02-19 17:58:25,799 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:25,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:25,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1259377407, now seen corresponding path program 1 times [2021-02-19 17:58:25,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:25,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477525457] [2021-02-19 17:58:25,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:26,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:26,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:26,069 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:26,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:26,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:58:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:26,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:26,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:26,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-19 17:58:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:26,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:26,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:26,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:26,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:26,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:58:26,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477525457] [2021-02-19 17:58:26,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:58:26,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 17:58:26,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890554838] [2021-02-19 17:58:26,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 17:58:26,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:58:26,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 17:58:26,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 17:58:26,229 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2021-02-19 17:58:26,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:58:26,435 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2021-02-19 17:58:26,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:58:26,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2021-02-19 17:58:26,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:58:26,447 INFO L225 Difference]: With dead ends: 76 [2021-02-19 17:58:26,447 INFO L226 Difference]: Without dead ends: 36 [2021-02-19 17:58:26,452 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 [2021-02-19 17:58:26,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-02-19 17:58:26,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-02-19 17:58:26,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-02-19 17:58:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2021-02-19 17:58:26,525 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 29 [2021-02-19 17:58:26,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:58:26,525 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2021-02-19 17:58:26,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-19 17:58:26,526 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2021-02-19 17:58:26,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-19 17:58:26,527 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:26,527 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] [2021-02-19 17:58:26,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:58:26,528 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:26,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:26,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1596973367, now seen corresponding path program 1 times [2021-02-19 17:58:26,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:26,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244303076] [2021-02-19 17:58:26,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:26,620 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:26,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:26,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:26,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:26,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:26,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:58:26,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:26,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:26,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:58:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:26,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:26,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:26,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-19 17:58:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:26,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:26,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:26,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:58:26,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244303076] [2021-02-19 17:58:26,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:58:26,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 17:58:26,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070463586] [2021-02-19 17:58:26,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-19 17:58:26,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:58:26,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-19 17:58:26,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-19 17:58:26,718 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 5 states. [2021-02-19 17:58:26,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:58:26,945 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2021-02-19 17:58:26,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 17:58:26,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2021-02-19 17:58:26,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:58:26,948 INFO L225 Difference]: With dead ends: 69 [2021-02-19 17:58:26,948 INFO L226 Difference]: Without dead ends: 48 [2021-02-19 17:58:26,949 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 [2021-02-19 17:58:26,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-02-19 17:58:26,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2021-02-19 17:58:26,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-02-19 17:58:26,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2021-02-19 17:58:26,961 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 29 [2021-02-19 17:58:26,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:58:26,961 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2021-02-19 17:58:26,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-19 17:58:26,962 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2021-02-19 17:58:26,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-19 17:58:26,963 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:26,963 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] [2021-02-19 17:58:26,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:58:26,964 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:26,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:26,965 INFO L82 PathProgramCache]: Analyzing trace with hash 378806037, now seen corresponding path program 1 times [2021-02-19 17:58:26,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:26,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44429239] [2021-02-19 17:58:26,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:27,056 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:27,158 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:27,215 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:58:27,216 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:58:27,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-19 17:58:27,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:58:27 BoogieIcfgContainer [2021-02-19 17:58:27,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:58:27,317 INFO L168 Benchmark]: Toolchain (without parser) took 2657.86 ms. Allocated memory was 180.4 MB in the beginning and 217.1 MB in the end (delta: 36.7 MB). Free memory was 161.7 MB in the beginning and 143.8 MB in the end (delta: 17.9 MB). Peak memory consumption was 54.7 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:27,318 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 180.4 MB. Free memory is still 151.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:58:27,319 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.44 ms. Allocated memory is still 180.4 MB. Free memory was 160.6 MB in the beginning and 150.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:27,320 INFO L168 Benchmark]: Boogie Preprocessor took 50.67 ms. Allocated memory is still 180.4 MB. Free memory was 150.4 MB in the beginning and 148.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:27,321 INFO L168 Benchmark]: RCFGBuilder took 664.45 ms. Allocated memory is still 180.4 MB. Free memory was 148.7 MB in the beginning and 144.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:27,322 INFO L168 Benchmark]: TraceAbstraction took 1646.16 ms. Allocated memory was 180.4 MB in the beginning and 217.1 MB in the end (delta: 36.7 MB). Free memory was 143.8 MB in the beginning and 143.8 MB in the end (delta: 46.0 kB). Peak memory consumption was 37.6 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:27,326 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 180.4 MB. Free memory is still 151.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 278.44 ms. Allocated memory is still 180.4 MB. Free memory was 160.6 MB in the beginning and 150.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.67 ms. Allocated memory is still 180.4 MB. Free memory was 150.4 MB in the beginning and 148.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 664.45 ms. Allocated memory is still 180.4 MB. Free memory was 148.7 MB in the beginning and 144.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1646.16 ms. Allocated memory was 180.4 MB in the beginning and 217.1 MB in the end (delta: 36.7 MB). Free memory was 143.8 MB in the beginning and 143.8 MB in the end (delta: 46.0 kB). Peak memory consumption was 37.6 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] = 0 [L34] i=0 VAL [\old(N)=0, a={-2:0}, b={5:0}, c={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, malloc(sizeof(int)*N)={5:0}, malloc(sizeof(int)*N)={-2:0}, N=1, sum={7:0}] [L34] COND TRUE i