/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:15:06,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:15:06,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:15:06,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:15:06,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:15:06,425 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:15:06,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:15:06,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:15:06,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:15:06,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:15:06,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:15:06,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:15:06,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:15:06,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:15:06,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:15:06,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:15:06,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:15:06,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:15:06,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:15:06,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:15:06,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:15:06,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:15:06,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:15:06,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:15:06,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-27 01:15:06,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:15:06,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:15:06,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:15:06,488 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:15:06,523 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:15:06,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:15:06,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:15:06,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:15:06,525 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:15:06,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:15:06,526 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:15:06,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:15:06,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:15:06,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:15:06,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:15:06,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:15:06,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:15:06,527 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:15:06,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:15:06,528 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:15:06,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:15:06,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:15:06,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:15:06,529 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:15:06,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:15:06,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:15:06,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:15:06,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:15:06,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:15:06,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:15:06,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:15:06,530 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:15:06,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:15:06,531 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:15:06,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:15:06,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:15:06,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:15:06,944 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:15:06,945 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:15:06,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i [2020-10-27 01:15:07,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94ec1b205/6aa4da5c18b54123ba2b267648aadc61/FLAGea8fe62b9 [2020-10-27 01:15:07,747 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:15:07,748 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i [2020-10-27 01:15:07,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94ec1b205/6aa4da5c18b54123ba2b267648aadc61/FLAGea8fe62b9 [2020-10-27 01:15:08,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94ec1b205/6aa4da5c18b54123ba2b267648aadc61 [2020-10-27 01:15:08,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:15:08,117 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:15:08,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:15:08,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:15:08,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:15:08,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:15:08" (1/1) ... [2020-10-27 01:15:08,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@767169d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:08, skipping insertion in model container [2020-10-27 01:15:08,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:15:08" (1/1) ... [2020-10-27 01:15:08,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:15:08,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:15:08,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:15:08,321 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:15:08,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:15:08,354 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:15:08,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:08 WrapperNode [2020-10-27 01:15:08,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:15:08,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:15:08,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:15:08,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:15:08,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:08" (1/1) ... [2020-10-27 01:15:08,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:08" (1/1) ... [2020-10-27 01:15:08,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:08" (1/1) ... [2020-10-27 01:15:08,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:08" (1/1) ... [2020-10-27 01:15:08,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:08" (1/1) ... [2020-10-27 01:15:08,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:08" (1/1) ... [2020-10-27 01:15:08,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:08" (1/1) ... [2020-10-27 01:15:08,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:15:08,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:15:08,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:15:08,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:15:08,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-27 01:15:08,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:15:08,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:15:08,459 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:15:08,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-10-27 01:15:08,460 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:15:08,460 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:15:08,460 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:15:08,460 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:15:08,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:15:08,461 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-10-27 01:15:08,461 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:15:08,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:15:08,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:15:08,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:15:08,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:15:08,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:15:08,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:15:08,672 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:15:08,672 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 01:15:08,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:15:08 BoogieIcfgContainer [2020-10-27 01:15:08,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:15:08,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:15:08,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:15:08,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:15:08,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:15:08" (1/3) ... [2020-10-27 01:15:08,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7f85e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:15:08, skipping insertion in model container [2020-10-27 01:15:08,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:08" (2/3) ... [2020-10-27 01:15:08,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e7f85e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:15:08, skipping insertion in model container [2020-10-27 01:15:08,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:15:08" (3/3) ... [2020-10-27 01:15:08,684 INFO L111 eAbstractionObserver]: Analyzing ICFG test_while_int.c_1.i [2020-10-27 01:15:08,708 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:15:08,715 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:15:08,731 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:15:08,776 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:15:08,776 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:15:08,776 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:15:08,776 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:15:08,776 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:15:08,776 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:15:08,777 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:15:08,777 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:15:08,799 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-27 01:15:08,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-27 01:15:08,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:15:08,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:15:08,813 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:15:08,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:15:08,836 INFO L82 PathProgramCache]: Analyzing trace with hash -440394374, now seen corresponding path program 1 times [2020-10-27 01:15:08,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:15:08,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656764116] [2020-10-27 01:15:08,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:15:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:15:09,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:15:09,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:15:09,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:15:09,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:15:09,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-27 01:15:09,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:15:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:15:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:15:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 01:15:09,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:15:09,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:15:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:15:09,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:15:09,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:15:09,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:15:09,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:15:09,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:15:09,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:15:09,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:15:09,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:15:09,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:15:09,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:15:09,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:15:09,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656764116] [2020-10-27 01:15:09,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:15:09,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:15:09,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405082779] [2020-10-27 01:15:09,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:15:09,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:15:09,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:15:09,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:15:09,500 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-10-27 01:15:09,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:15:09,715 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2020-10-27 01:15:09,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:15:09,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-27 01:15:09,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:15:09,726 INFO L225 Difference]: With dead ends: 36 [2020-10-27 01:15:09,726 INFO L226 Difference]: Without dead ends: 15 [2020-10-27 01:15:09,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:15:09,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-27 01:15:09,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-10-27 01:15:09,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-27 01:15:09,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-10-27 01:15:09,772 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2020-10-27 01:15:09,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:15:09,773 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-10-27 01:15:09,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:15:09,773 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-10-27 01:15:09,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 01:15:09,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:15:09,774 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:15:09,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:15:09,775 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:15:09,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:15:09,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1907763863, now seen corresponding path program 1 times [2020-10-27 01:15:09,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:15:09,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533720608] [2020-10-27 01:15:09,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:15:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:15:09,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:15:09,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:15:09,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:15:09,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:15:09,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 01:15:09,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:15:09,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:15:09,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:15:09,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:15:09,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:15:10,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:15:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:15:10,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:15:10,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:15:10,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:15:10,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:15:10,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 01:15:10,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:15:10,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:15:10,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:15:10,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:15:10,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:15:10,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:15:10,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533720608] [2020-10-27 01:15:10,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:15:10,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 01:15:10,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536787146] [2020-10-27 01:15:10,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:15:10,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:15:10,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:15:10,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:15:10,076 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2020-10-27 01:15:10,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:15:10,268 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-10-27 01:15:10,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:15:10,269 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-27 01:15:10,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:15:10,270 INFO L225 Difference]: With dead ends: 21 [2020-10-27 01:15:10,270 INFO L226 Difference]: Without dead ends: 17 [2020-10-27 01:15:10,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:15:10,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-27 01:15:10,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-10-27 01:15:10,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-27 01:15:10,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-27 01:15:10,279 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2020-10-27 01:15:10,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:15:10,280 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-27 01:15:10,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:15:10,280 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-27 01:15:10,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 01:15:10,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:15:10,281 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:15:10,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:15:10,282 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:15:10,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:15:10,283 INFO L82 PathProgramCache]: Analyzing trace with hash -664968076, now seen corresponding path program 2 times [2020-10-27 01:15:10,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:15:10,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569671261] [2020-10-27 01:15:10,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:15:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:15:10,321 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:15:10,322 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:15:10,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:15:10,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:15:10 BoogieIcfgContainer [2020-10-27 01:15:10,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:15:10,344 INFO L168 Benchmark]: Toolchain (without parser) took 2230.67 ms. Allocated memory is still 159.4 MB. Free memory was 135.1 MB in the beginning and 140.8 MB in the end (delta: -5.6 MB). Peak memory consumption was 85.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:15:10,345 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 159.4 MB. Free memory was 130.5 MB in the beginning and 130.4 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:15:10,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.84 ms. Allocated memory is still 159.4 MB. Free memory was 134.5 MB in the beginning and 125.5 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:15:10,348 INFO L168 Benchmark]: Boogie Preprocessor took 35.15 ms. Allocated memory is still 159.4 MB. Free memory was 125.5 MB in the beginning and 124.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:15:10,349 INFO L168 Benchmark]: RCFGBuilder took 282.93 ms. Allocated memory is still 159.4 MB. Free memory was 124.1 MB in the beginning and 112.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:15:10,350 INFO L168 Benchmark]: TraceAbstraction took 1665.28 ms. Allocated memory is still 159.4 MB. Free memory was 112.2 MB in the beginning and 140.8 MB in the end (delta: -28.6 MB). Peak memory consumption was 62.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:15:10,353 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 159.4 MB. Free memory was 130.5 MB in the beginning and 130.4 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 235.84 ms. Allocated memory is still 159.4 MB. Free memory was 134.5 MB in the beginning and 125.5 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.15 ms. Allocated memory is still 159.4 MB. Free memory was 125.5 MB in the beginning and 124.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 282.93 ms. Allocated memory is still 159.4 MB. Free memory was 124.1 MB in the beginning and 112.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1665.28 ms. Allocated memory is still 159.4 MB. Free memory was 112.2 MB in the beginning and 140.8 MB in the end (delta: -28.6 MB). Peak memory consumption was 62.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int i=0; [L15] COND TRUE i<5 [L16] i++ [L18] (i!=3) ? (0) : __blast_assert () [L15] COND TRUE i<5 [L16] i++ [L18] (i!=3) ? (0) : __blast_assert () [L15] COND TRUE i<5 [L16] i++ [L18] (i!=3) ? (0) : __blast_assert () [L18] CALL __blast_assert () [L8] CALL reach_error() [L3] __assert_fail("0", "test_while_int.c_1.i", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 19 SDslu, 39 SDs, 0 SdLazy, 40 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1040 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...