/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-b7b32d2 [2021-02-19 17:58:22,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:58:22,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:58:22,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:58:22,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:58:22,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:58:22,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:58:22,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:58:22,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:58:22,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:58:22,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:58:22,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:58:22,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:58:22,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:58:22,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:58:22,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:58:22,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:58:22,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:58:22,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:58:22,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:58:22,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:58:22,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:58:22,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:58:22,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:58:22,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-19 17:58:22,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-19 17:58:22,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-19 17:58:22,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-19 17:58:22,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-19 17:58:22,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-19 17:58:22,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-19 17:58:22,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-19 17:58:22,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-19 17:58:22,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-19 17:58:22,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-19 17:58:22,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-19 17:58:22,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-19 17:58:22,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-19 17:58:22,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:58:22,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:58:22,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:58:22,120 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 17:58:22,147 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:58:22,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:58:22,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:58:22,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:58:22,150 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:58:22,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:58:22,150 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:58:22,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:58:22,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:58:22,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:58:22,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:58:22,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:58:22,152 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:58:22,152 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:58:22,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:58:22,153 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:58:22,153 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:58:22,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:58:22,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:58:22,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:58:22,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:58:22,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:58:22,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:58:22,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:58:22,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:58:22,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:58:22,155 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:58:22,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:58:22,156 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:58:22,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:58:22,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:58:22,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:58:22,576 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:58:22,577 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:58:22,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2f.c [2021-02-19 17:58:22,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4a6c26ee/4a052521e54246e7972cd3854ed4dbe5/FLAG91196e9b2 [2021-02-19 17:58:23,327 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:58:23,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res2f.c [2021-02-19 17:58:23,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4a6c26ee/4a052521e54246e7972cd3854ed4dbe5/FLAG91196e9b2 [2021-02-19 17:58:23,661 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4a6c26ee/4a052521e54246e7972cd3854ed4dbe5 [2021-02-19 17:58:23,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:58:23,677 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:58:23,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:58:23,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:58:23,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:58:23,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:58:23" (1/1) ... [2021-02-19 17:58:23,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38297924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:23, skipping insertion in model container [2021-02-19 17:58:23,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:58:23" (1/1) ... [2021-02-19 17:58:23,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:58:23,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:58:23,881 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] [2021-02-19 17:58:23,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:58:23,916 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:58:23,931 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] [2021-02-19 17:58:23,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:58:23,962 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:58:23,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:23 WrapperNode [2021-02-19 17:58:23,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:58:23,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:58:23,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:58:23,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:58:23,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:23" (1/1) ... [2021-02-19 17:58:23,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:23" (1/1) ... [2021-02-19 17:58:23,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:23" (1/1) ... [2021-02-19 17:58:23,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:23" (1/1) ... [2021-02-19 17:58:24,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:23" (1/1) ... [2021-02-19 17:58:24,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:23" (1/1) ... [2021-02-19 17:58:24,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:23" (1/1) ... [2021-02-19 17:58:24,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:58:24,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:58:24,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:58:24,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:58:24,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:23" (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 17:58:24,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:58:24,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:58:24,127 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:58:24,127 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-19 17:58:24,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-19 17:58:24,128 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:58:24,128 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:58:24,128 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:58:24,129 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:58:24,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:58:24,129 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-19 17:58:24,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-19 17:58:24,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 17:58:24,131 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-19 17:58:24,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:58:24,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-19 17:58:24,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:58:24,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:58:24,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:58:24,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:58:24,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:58:24,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:58:24,692 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:58:24,692 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-19 17:58:24,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:58:24 BoogieIcfgContainer [2021-02-19 17:58:24,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:58:24,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:58:24,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:58:24,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:58:24,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:58:23" (1/3) ... [2021-02-19 17:58:24,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47aa0d61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:58:24, skipping insertion in model container [2021-02-19 17:58:24,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:23" (2/3) ... [2021-02-19 17:58:24,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47aa0d61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:58:24, skipping insertion in model container [2021-02-19 17:58:24,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:58:24" (3/3) ... [2021-02-19 17:58:24,704 INFO L111 eAbstractionObserver]: Analyzing ICFG res2f.c [2021-02-19 17:58:24,712 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:58:24,717 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:58:24,736 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:58:24,764 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:58:24,764 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:58:24,764 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:58:24,764 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:58:24,764 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:58:24,765 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:58:24,765 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:58:24,765 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:58:24,784 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2021-02-19 17:58:24,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-19 17:58:24,791 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:24,792 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 17:58:24,792 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:24,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:24,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1259377407, now seen corresponding path program 1 times [2021-02-19 17:58:24,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:24,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875560920] [2021-02-19 17:58:24,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:25,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:25,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:25,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:25,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:25,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:58:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:25,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:25,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:25,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-19 17:58:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:25,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:25,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:25,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:25,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:25,124 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 17:58:25,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875560920] [2021-02-19 17:58:25,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:58:25,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 17:58:25,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109466965] [2021-02-19 17:58:25,132 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 17:58:25,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:58:25,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 17:58:25,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 17:58:25,154 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2021-02-19 17:58:25,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:58:25,442 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2021-02-19 17:58:25,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:58:25,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2021-02-19 17:58:25,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:58:25,453 INFO L225 Difference]: With dead ends: 76 [2021-02-19 17:58:25,453 INFO L226 Difference]: Without dead ends: 36 [2021-02-19 17:58:25,456 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 17:58:25,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-02-19 17:58:25,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-02-19 17:58:25,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-02-19 17:58:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2021-02-19 17:58:25,501 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 29 [2021-02-19 17:58:25,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:58:25,502 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2021-02-19 17:58:25,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-19 17:58:25,502 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2021-02-19 17:58:25,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-19 17:58:25,503 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:25,503 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 17:58:25,504 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:58:25,504 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:25,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:25,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1596973367, now seen corresponding path program 1 times [2021-02-19 17:58:25,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:25,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855961292] [2021-02-19 17:58:25,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:25,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:25,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:25,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:25,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:25,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:25,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:58:25,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:25,630 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:25,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:58:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:25,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:25,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:25,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-19 17:58:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:25,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:25,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:25,716 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 17:58:25,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855961292] [2021-02-19 17:58:25,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:58:25,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 17:58:25,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534260197] [2021-02-19 17:58:25,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-19 17:58:25,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:58:25,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-19 17:58:25,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-19 17:58:25,720 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 5 states. [2021-02-19 17:58:25,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:58:25,937 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2021-02-19 17:58:25,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 17:58:25,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2021-02-19 17:58:25,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:58:25,939 INFO L225 Difference]: With dead ends: 69 [2021-02-19 17:58:25,939 INFO L226 Difference]: Without dead ends: 48 [2021-02-19 17:58:25,941 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 17:58:25,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-02-19 17:58:25,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2021-02-19 17:58:25,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-02-19 17:58:25,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2021-02-19 17:58:25,953 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 29 [2021-02-19 17:58:25,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:58:25,954 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2021-02-19 17:58:25,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-19 17:58:25,954 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2021-02-19 17:58:25,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-19 17:58:25,955 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:25,956 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 17:58:25,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:58:25,956 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:25,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:25,957 INFO L82 PathProgramCache]: Analyzing trace with hash 378806037, now seen corresponding path program 1 times [2021-02-19 17:58:25,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:25,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144270131] [2021-02-19 17:58:25,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:26,040 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:26,170 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:26,232 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:58:26,233 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:58:26,234 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-19 17:58:26,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:58:26 BoogieIcfgContainer [2021-02-19 17:58:26,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:58:26,308 INFO L168 Benchmark]: Toolchain (without parser) took 2640.18 ms. Allocated memory was 151.0 MB in the beginning and 205.5 MB in the end (delta: 54.5 MB). Free memory was 126.2 MB in the beginning and 180.7 MB in the end (delta: -54.5 MB). Peak memory consumption was 79.6 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:26,309 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:58:26,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.69 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 114.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:26,311 INFO L168 Benchmark]: Boogie Preprocessor took 47.89 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 112.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:26,312 INFO L168 Benchmark]: RCFGBuilder took 681.30 ms. Allocated memory is still 151.0 MB. Free memory was 112.7 MB in the beginning and 129.0 MB in the end (delta: -16.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:26,313 INFO L168 Benchmark]: TraceAbstraction took 1610.79 ms. Allocated memory was 151.0 MB in the beginning and 205.5 MB in the end (delta: 54.5 MB). Free memory was 128.5 MB in the beginning and 180.7 MB in the end (delta: -52.2 MB). Peak memory consumption was 81.8 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:26,318 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 284.69 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 114.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.89 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 112.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 681.30 ms. Allocated memory is still 151.0 MB. Free memory was 112.7 MB in the beginning and 129.0 MB in the end (delta: -16.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1610.79 ms. Allocated memory was 151.0 MB in the beginning and 205.5 MB in the end (delta: 54.5 MB). Free memory was 128.5 MB in the beginning and 180.7 MB in the end (delta: -52.2 MB). Peak memory consumption was 81.8 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)={-2:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={7:0}] [L34] COND TRUE i