/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/sina3f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:52:11,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:52:11,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:52:11,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:52:11,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:52:11,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:52:11,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:52:11,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:52:11,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:52:11,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:52:11,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:52:11,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:52:11,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:52:11,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:52:11,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:52:11,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:52:11,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:52:11,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:52:11,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:52:11,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:52:11,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:52:11,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:52:11,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:52:11,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:52:11,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:52:11,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:52:11,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:52:11,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:52:11,640 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-23 13:52:11,687 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:52:11,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:52:11,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:52:11,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:52:11,690 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:52:11,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:52:11,691 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:52:11,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:52:11,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:52:11,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:52:11,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:52:11,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:52:11,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:52:11,693 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:52:11,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:52:11,694 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:52:11,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:52:11,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:52:11,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:52:11,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:52:11,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:52:11,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:52:11,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:52:11,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:52:11,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:52:11,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:52:11,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:52:11,696 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:52:11,697 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:52:12,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:52:12,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:52:12,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:52:12,141 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:52:12,141 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:52:12,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina3f.c [2021-02-23 13:52:12,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/198184421/ff37e0e9bfff4d32a7edeaf1e5793663/FLAGfc85dc1ee [2021-02-23 13:52:12,854 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:52:12,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sina3f.c [2021-02-23 13:52:12,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/198184421/ff37e0e9bfff4d32a7edeaf1e5793663/FLAGfc85dc1ee [2021-02-23 13:52:13,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/198184421/ff37e0e9bfff4d32a7edeaf1e5793663 [2021-02-23 13:52:13,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:52:13,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:52:13,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:52:13,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:52:13,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:52:13,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:52:13" (1/1) ... [2021-02-23 13:52:13,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19baf125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:13, skipping insertion in model container [2021-02-23 13:52:13,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:52:13" (1/1) ... [2021-02-23 13:52:13,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:52:13,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:52:13,425 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/sina3f.c[589,602] [2021-02-23 13:52:13,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:52:13,454 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:52:13,468 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/sina3f.c[589,602] [2021-02-23 13:52:13,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:52:13,496 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:52:13,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:13 WrapperNode [2021-02-23 13:52:13,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:52:13,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:52:13,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:52:13,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:52:13,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:13" (1/1) ... [2021-02-23 13:52:13,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:13" (1/1) ... [2021-02-23 13:52:13,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:13" (1/1) ... [2021-02-23 13:52:13,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:13" (1/1) ... [2021-02-23 13:52:13,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:13" (1/1) ... [2021-02-23 13:52:13,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:13" (1/1) ... [2021-02-23 13:52:13,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:13" (1/1) ... [2021-02-23 13:52:13,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:52:13,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:52:13,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:52:13,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:52:13,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:52:13,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:52:13,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:52:13,701 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:52:13,701 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 13:52:13,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:52:13,701 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:52:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:52:13,702 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:52:13,702 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:52:13,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:52:13,702 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 13:52:13,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:52:13,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:52:13,703 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 13:52:13,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:52:13,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 13:52:13,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:52:13,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:52:13,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:52:13,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:52:13,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:52:13,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:52:14,092 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:52:14,093 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 13:52:14,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:52:14 BoogieIcfgContainer [2021-02-23 13:52:14,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:52:14,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:52:14,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:52:14,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:52:14,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:52:13" (1/3) ... [2021-02-23 13:52:14,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a7ef9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:52:14, skipping insertion in model container [2021-02-23 13:52:14,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:13" (2/3) ... [2021-02-23 13:52:14,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16a7ef9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:52:14, skipping insertion in model container [2021-02-23 13:52:14,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:52:14" (3/3) ... [2021-02-23 13:52:14,103 INFO L111 eAbstractionObserver]: Analyzing ICFG sina3f.c [2021-02-23 13:52:14,110 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:52:14,118 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:52:14,139 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:52:14,181 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:52:14,181 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:52:14,181 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:52:14,181 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:52:14,181 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:52:14,182 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:52:14,182 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:52:14,182 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:52:14,208 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2021-02-23 13:52:14,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-23 13:52:14,214 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:52:14,215 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] [2021-02-23 13:52:14,215 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:52:14,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:52:14,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1425380239, now seen corresponding path program 1 times [2021-02-23 13:52:14,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:52:14,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821309352] [2021-02-23 13:52:14,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:52:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:14,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:14,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:14,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:14,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:14,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:52:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:14,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:14,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:14,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:52:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:14,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:14,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:14,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:14,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:14,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:52:14,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821309352] [2021-02-23 13:52:14,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:52:14,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 13:52:14,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575542648] [2021-02-23 13:52:14,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 13:52:14,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:52:14,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 13:52:14,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:52:14,718 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2021-02-23 13:52:14,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:52:14,962 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2021-02-23 13:52:14,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:52:14,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2021-02-23 13:52:14,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:52:14,972 INFO L225 Difference]: With dead ends: 70 [2021-02-23 13:52:14,973 INFO L226 Difference]: Without dead ends: 35 [2021-02-23 13:52:14,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:52:14,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-23 13:52:15,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-02-23 13:52:15,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-02-23 13:52:15,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-02-23 13:52:15,038 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2021-02-23 13:52:15,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:52:15,038 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-02-23 13:52:15,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 13:52:15,038 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-02-23 13:52:15,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-23 13:52:15,040 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:52:15,040 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] [2021-02-23 13:52:15,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:52:15,041 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:52:15,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:52:15,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1281239155, now seen corresponding path program 1 times [2021-02-23 13:52:15,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:52:15,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657197067] [2021-02-23 13:52:15,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:52:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:15,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:15,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:15,159 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:15,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:15,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:15,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:15,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:15,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:15,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:52:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:15,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:15,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:15,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:52:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:15,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:15,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:15,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:52:15,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657197067] [2021-02-23 13:52:15,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:52:15,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 13:52:15,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283306551] [2021-02-23 13:52:15,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 13:52:15,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:52:15,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 13:52:15,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:52:15,325 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2021-02-23 13:52:15,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:52:15,648 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2021-02-23 13:52:15,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 13:52:15,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2021-02-23 13:52:15,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:52:15,652 INFO L225 Difference]: With dead ends: 67 [2021-02-23 13:52:15,652 INFO L226 Difference]: Without dead ends: 47 [2021-02-23 13:52:15,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:52:15,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-02-23 13:52:15,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2021-02-23 13:52:15,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-23 13:52:15,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-02-23 13:52:15,667 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2021-02-23 13:52:15,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:52:15,668 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-02-23 13:52:15,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 13:52:15,668 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-02-23 13:52:15,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-23 13:52:15,669 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:52:15,669 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] [2021-02-23 13:52:15,670 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:52:15,670 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:52:15,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:52:15,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1000164587, now seen corresponding path program 1 times [2021-02-23 13:52:15,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:52:15,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276926218] [2021-02-23 13:52:15,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:52:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:52:15,732 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:52:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:52:15,808 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:52:15,864 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:52:15,865 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:52:15,865 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 13:52:15,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:52:15 BoogieIcfgContainer [2021-02-23 13:52:15,914 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:52:15,916 INFO L168 Benchmark]: Toolchain (without parser) took 2690.31 ms. Allocated memory is still 166.7 MB. Free memory was 121.2 MB in the beginning and 107.5 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:15,916 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 166.7 MB. Free memory is still 138.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:52:15,917 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.77 ms. Allocated memory is still 166.7 MB. Free memory was 120.2 MB in the beginning and 110.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:15,918 INFO L168 Benchmark]: Boogie Preprocessor took 43.17 ms. Allocated memory is still 166.7 MB. Free memory was 110.1 MB in the beginning and 108.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:15,919 INFO L168 Benchmark]: RCFGBuilder took 552.76 ms. Allocated memory is still 166.7 MB. Free memory was 108.0 MB in the beginning and 132.7 MB in the end (delta: -24.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:15,920 INFO L168 Benchmark]: TraceAbstraction took 1818.37 ms. Allocated memory is still 166.7 MB. Free memory was 132.3 MB in the beginning and 107.5 MB in the end (delta: 24.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:15,924 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 166.7 MB. Free memory is still 138.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 256.77 ms. Allocated memory is still 166.7 MB. Free memory was 120.2 MB in the beginning and 110.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.17 ms. Allocated memory is still 166.7 MB. Free memory was 110.1 MB in the beginning and 108.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 552.76 ms. Allocated memory is still 166.7 MB. Free memory was 108.0 MB in the beginning and 132.7 MB in the end (delta: -24.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1818.37 ms. Allocated memory is still 166.7 MB. Free memory was 132.3 MB in the beginning and 107.5 MB in the end (delta: 24.8 MB). Peak memory consumption was 25.8 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] long long *a = malloc(sizeof(long long)*N); [L30] int *b = malloc(sizeof(int)*N); [L32] sum[0] = 1 [L33] i=0 VAL [\old(N)=0, a={-2:0}, b={11:0}, i=0, malloc(sizeof(int)*N)={11:0}, malloc(sizeof(long long)*N)={-2:0}, N=1, sum={13:0}] [L33] COND TRUE i