/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_union_cast-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:15:00,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:15:00,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:15:00,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:15:00,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:15:00,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:15:00,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:15:00,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:15:01,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:15:01,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:15:01,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:15:01,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:15:01,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:15:01,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:15:01,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:15:01,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:15:01,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:15:01,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:15:01,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:15:01,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:15:01,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:15:01,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:15:01,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:15:01,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:15:01,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:15:01,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:15:01,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:15:01,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:15:01,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:15:01,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-27 01:15:01,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:15:01,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:15:01,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:15:01,051 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 01:15:01,080 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:15:01,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:15:01,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:15:01,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:15:01,082 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:15:01,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:15:01,083 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:15:01,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:15:01,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:15:01,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:15:01,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:15:01,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:15:01,084 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:15:01,084 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:15:01,084 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:15:01,085 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:15:01,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:15:01,085 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:15:01,085 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:15:01,086 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:15:01,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:15:01,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:15:01,086 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:15:01,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:15:01,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:15:01,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:15:01,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:15:01,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:15:01,088 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:15:01,088 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:15:01,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:15:01,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:15:01,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:15:01,570 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:15:01,572 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:15:01,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_union_cast-2.i [2020-10-27 01:15:01,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c195c081/265e6ac1394845d4a78625af3d53212b/FLAG514d7f8d4 [2020-10-27 01:15:02,425 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:15:02,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test_union_cast-2.i [2020-10-27 01:15:02,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c195c081/265e6ac1394845d4a78625af3d53212b/FLAG514d7f8d4 [2020-10-27 01:15:02,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c195c081/265e6ac1394845d4a78625af3d53212b [2020-10-27 01:15:02,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:15:02,788 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:15:02,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:15:02,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:15:02,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:15:02,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:15:02" (1/1) ... [2020-10-27 01:15:02,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@431ca9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:02, skipping insertion in model container [2020-10-27 01:15:02,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:15:02" (1/1) ... [2020-10-27 01:15:02,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:15:02,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:15:03,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:15:03,018 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:15:03,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:15:03,056 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:15:03,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:03 WrapperNode [2020-10-27 01:15:03,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:15:03,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:15:03,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:15:03,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:15:03,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:03" (1/1) ... [2020-10-27 01:15:03,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:03" (1/1) ... [2020-10-27 01:15:03,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:03" (1/1) ... [2020-10-27 01:15:03,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:03" (1/1) ... [2020-10-27 01:15:03,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:03" (1/1) ... [2020-10-27 01:15:03,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:03" (1/1) ... [2020-10-27 01:15:03,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:03" (1/1) ... [2020-10-27 01:15:03,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:15:03,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:15:03,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:15:03,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:15:03,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:03" (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 01:15:03,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:15:03,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:15:03,186 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:15:03,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 01:15:03,187 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:15:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:15:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:15:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 01:15:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 01:15:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:15:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:15:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 01:15:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:15:03,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-27 01:15:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:15:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:15:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:15:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:15:03,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:15:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:15:03,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-27 01:15:03,465 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:15:03,466 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 01:15:03,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:15:03 BoogieIcfgContainer [2020-10-27 01:15:03,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:15:03,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:15:03,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:15:03,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:15:03,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:15:02" (1/3) ... [2020-10-27 01:15:03,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e60055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:15:03, skipping insertion in model container [2020-10-27 01:15:03,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:15:03" (2/3) ... [2020-10-27 01:15:03,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e60055 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:15:03, skipping insertion in model container [2020-10-27 01:15:03,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:15:03" (3/3) ... [2020-10-27 01:15:03,478 INFO L111 eAbstractionObserver]: Analyzing ICFG test_union_cast-2.i [2020-10-27 01:15:03,492 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:15:03,497 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:15:03,514 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:15:03,544 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:15:03,544 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:15:03,545 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:15:03,545 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:15:03,545 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:15:03,545 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:15:03,545 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:15:03,546 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:15:03,566 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-27 01:15:03,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 01:15:03,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:15:03,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:15:03,576 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:15:03,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:15:03,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1009234067, now seen corresponding path program 1 times [2020-10-27 01:15:03,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:15:03,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042098951] [2020-10-27 01:15:03,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:15:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:15:03,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:15:04,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:15:04,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 01:15:04,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:15:04,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-27 01:15:04,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:15:04,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:15:04,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:15:04,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 01:15:04,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 01:15:04,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:15:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:15:04,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:15:04,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:15:04,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:15:04,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:15:04,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 01:15:04,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:15:04,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:15:04,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:15:04,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:15:04,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:15:04,392 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 01:15:04,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042098951] [2020-10-27 01:15:04,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:15:04,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:15:04,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120315149] [2020-10-27 01:15:04,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:15:04,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:15:04,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:15:04,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:15:04,420 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 6 states. [2020-10-27 01:15:04,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:15:04,560 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-10-27 01:15:04,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:15:04,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-27 01:15:04,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:15:04,569 INFO L225 Difference]: With dead ends: 30 [2020-10-27 01:15:04,570 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 01:15:04,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:15:04,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 01:15:04,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 01:15:04,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 01:15:04,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 01:15:04,610 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-27 01:15:04,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:15:04,610 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 01:15:04,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:15:04,611 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 01:15:04,611 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 01:15:04,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:15:04,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 01:15:04,727 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-27 01:15:04,728 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-27 01:15:04,728 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-27 01:15:04,728 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-27 01:15:04,728 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-27 01:15:04,729 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:15:04,729 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= ~CURRENTLY_UNKNOWN~0 |old(~CURRENTLY_UNKNOWN~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-27 01:15:04,729 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:15:04,729 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:15:04,730 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 01:15:04,730 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 01:15:04,730 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:15:04,730 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 33 39) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-27 01:15:04,731 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 33 39) no Hoare annotation was computed. [2020-10-27 01:15:04,731 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 33 39) no Hoare annotation was computed. [2020-10-27 01:15:04,731 INFO L270 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (= |main_#t~mem3| 10) [2020-10-27 01:15:04,731 INFO L274 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-10-27 01:15:04,731 INFO L270 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-27 01:15:04,732 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 13 18) the Hoare annotation is: true [2020-10-27 01:15:04,732 INFO L274 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-10-27 01:15:04,732 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-27 01:15:04,732 INFO L274 CegarLoopResult]: For program point L14-2(lines 13 18) no Hoare annotation was computed. [2020-10-27 01:15:04,732 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 13 18) no Hoare annotation was computed. [2020-10-27 01:15:04,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:15:04 BoogieIcfgContainer [2020-10-27 01:15:04,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:15:04,742 INFO L168 Benchmark]: Toolchain (without parser) took 1958.70 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 75.6 MB in the end (delta: 49.6 MB). Peak memory consumption was 50.2 MB. Max. memory is 8.0 GB. [2020-10-27 01:15:04,742 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 122.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:15:04,744 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.64 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 115.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:15:04,745 INFO L168 Benchmark]: Boogie Preprocessor took 37.76 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:15:04,746 INFO L168 Benchmark]: RCFGBuilder took 371.18 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 100.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 01:15:04,747 INFO L168 Benchmark]: TraceAbstraction took 1269.06 ms. Allocated memory is still 151.0 MB. Free memory was 100.2 MB in the beginning and 75.6 MB in the end (delta: 24.6 MB). Peak memory consumption was 26.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:15:04,750 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 122.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 265.64 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 115.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.76 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 371.18 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 100.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1269.06 ms. Allocated memory is still 151.0 MB. Free memory was 100.2 MB in the beginning and 75.6 MB in the end (delta: 24.6 MB). Peak memory consumption was 26.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 8 SDslu, 29 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 8 NumberOfFragments, 45 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 56 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 506 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 correct! Received shutdown request...