/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test_union_cast-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:45:00,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:45:00,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:45:00,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:45:00,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:45:00,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:45:00,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:45:00,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:45:00,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:45:00,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:45:00,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:45:00,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:45:00,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:45:00,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:45:00,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:45:00,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:45:00,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:45:00,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:45:00,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:45:00,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:45:00,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:45:00,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:45:00,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:45:00,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:45:00,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:45:00,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:45:00,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:45:00,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:45:00,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:45:00,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 15:45:00,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:45:00,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:45:00,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:45:00,580 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 [2020-08-21 15:45:00,612 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:45:00,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:45:00,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:45:00,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:45:00,614 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:45:00,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:45:00,614 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:45:00,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:45:00,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:45:00,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:45:00,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:45:00,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:45:00,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:45:00,615 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:45:00,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:45:00,616 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:45:00,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:45:00,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:45:00,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:45:00,617 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:45:00,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:45:00,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:45:00,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:45:00,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:45:00,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:45:00,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:45:00,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:45:00,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:45:00,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:45:00,619 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:45:00,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:45:00,929 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:45:00,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:45:00,934 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:45:00,935 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:45:00,936 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_union_cast-2.i [2020-08-21 15:45:01,010 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecfb3587f/f944fecec8a44b82b6ffac08d1293f70/FLAG8dbe2ab5b [2020-08-21 15:45:01,504 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:45:01,505 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test_union_cast-2.i [2020-08-21 15:45:01,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecfb3587f/f944fecec8a44b82b6ffac08d1293f70/FLAG8dbe2ab5b [2020-08-21 15:45:01,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ecfb3587f/f944fecec8a44b82b6ffac08d1293f70 [2020-08-21 15:45:01,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:45:01,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:45:01,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:45:01,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:45:01,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:45:01,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:45:01" (1/1) ... [2020-08-21 15:45:01,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46088d73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:01, skipping insertion in model container [2020-08-21 15:45:01,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:45:01" (1/1) ... [2020-08-21 15:45:01,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:45:01,894 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:45:02,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:45:02,077 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:45:02,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:45:02,116 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:45:02,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:02 WrapperNode [2020-08-21 15:45:02,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:45:02,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:45:02,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:45:02,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:45:02,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:02" (1/1) ... [2020-08-21 15:45:02,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:02" (1/1) ... [2020-08-21 15:45:02,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:02" (1/1) ... [2020-08-21 15:45:02,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:02" (1/1) ... [2020-08-21 15:45:02,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:02" (1/1) ... [2020-08-21 15:45:02,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:02" (1/1) ... [2020-08-21 15:45:02,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:02" (1/1) ... [2020-08-21 15:45:02,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:45:02,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:45:02,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:45:02,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:45:02,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:02" (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 [2020-08-21 15:45:02,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:45:02,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:45:02,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 15:45:02,298 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:45:02,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:45:02,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 15:45:02,298 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 15:45:02,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-08-21 15:45:02,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-08-21 15:45:02,299 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:45:02,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:45:02,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 15:45:02,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:45:02,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:45:02,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:45:02,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:45:02,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:45:02,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 15:45:02,605 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:45:02,606 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 15:45:02,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:45:02 BoogieIcfgContainer [2020-08-21 15:45:02,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:45:02,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:45:02,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:45:02,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:45:02,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:45:01" (1/3) ... [2020-08-21 15:45:02,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48964b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:45:02, skipping insertion in model container [2020-08-21 15:45:02,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:02" (2/3) ... [2020-08-21 15:45:02,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48964b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:45:02, skipping insertion in model container [2020-08-21 15:45:02,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:45:02" (3/3) ... [2020-08-21 15:45:02,618 INFO L109 eAbstractionObserver]: Analyzing ICFG test_union_cast-2.i [2020-08-21 15:45:02,628 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:45:02,635 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:45:02,650 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:45:02,674 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:45:02,674 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:45:02,674 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:45:02,674 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:45:02,674 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:45:02,674 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:45:02,675 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:45:02,675 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:45:02,691 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-08-21 15:45:02,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-21 15:45:02,697 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:45:02,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:45:02,698 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:45:02,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:45:02,703 INFO L82 PathProgramCache]: Analyzing trace with hash -715594688, now seen corresponding path program 1 times [2020-08-21 15:45:02,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:45:02,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802623007] [2020-08-21 15:45:02,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:45:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:45:02,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:45:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:45:02,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:45:02,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802623007] [2020-08-21 15:45:02,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:45:02,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:45:02,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470773266] [2020-08-21 15:45:02,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:45:02,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:45:03,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:45:03,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:45:03,013 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-08-21 15:45:03,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:45:03,140 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-08-21 15:45:03,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 15:45:03,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-08-21 15:45:03,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:45:03,151 INFO L225 Difference]: With dead ends: 25 [2020-08-21 15:45:03,152 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 15:45:03,156 INFO L675 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 [2020-08-21 15:45:03,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 15:45:03,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 15:45:03,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 15:45:03,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 15:45:03,190 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-08-21 15:45:03,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:45:03,191 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 15:45:03,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:45:03,192 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 15:45:03,192 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 15:45:03,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:45:03,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 15:45:03,256 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 15:45:03,257 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~CURRENTLY_UNKNOWN~0 |old(~CURRENTLY_UNKNOWN~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-21 15:45:03,257 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 15:45:03,257 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 15:45:03,257 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 15:45:03,258 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 15:45:03,258 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 15:45:03,258 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 22 28) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-21 15:45:03,259 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 22 28) no Hoare annotation was computed. [2020-08-21 15:45:03,259 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (= |main_#t~mem0| 10) [2020-08-21 15:45:03,259 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-08-21 15:45:03,259 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 22 28) no Hoare annotation was computed. [2020-08-21 15:45:03,259 INFO L268 CegarLoopResult]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2020-08-21 15:45:03,260 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2020-08-21 15:45:03,260 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2020-08-21 15:45:03,260 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-21 15:45:03,260 INFO L268 CegarLoopResult]: For program point L3(lines 3 5) no Hoare annotation was computed. [2020-08-21 15:45:03,261 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-08-21 15:45:03,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:45:03 BoogieIcfgContainer [2020-08-21 15:45:03,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:45:03,270 INFO L168 Benchmark]: Toolchain (without parser) took 1411.48 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 103.1 MB in the beginning and 126.7 MB in the end (delta: -23.6 MB). Peak memory consumption was 39.3 MB. Max. memory is 7.1 GB. [2020-08-21 15:45:03,271 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 15:45:03,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.99 ms. Allocated memory is still 139.5 MB. Free memory was 102.9 MB in the beginning and 92.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-21 15:45:03,274 INFO L168 Benchmark]: Boogie Preprocessor took 118.96 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.4 MB in the beginning and 180.4 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-08-21 15:45:03,275 INFO L168 Benchmark]: RCFGBuilder took 372.81 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 165.4 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. [2020-08-21 15:45:03,276 INFO L168 Benchmark]: TraceAbstraction took 656.73 ms. Allocated memory is still 202.4 MB. Free memory was 165.4 MB in the beginning and 127.4 MB in the end (delta: 38.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 7.1 GB. [2020-08-21 15:45:03,280 INFO L336 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 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 257.99 ms. Allocated memory is still 139.5 MB. Free memory was 102.9 MB in the beginning and 92.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.96 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.4 MB in the beginning and 180.4 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 372.81 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 165.4 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 656.73 ms. Allocated memory is still 202.4 MB. Free memory was 165.4 MB in the beginning and 127.4 MB in the end (delta: 38.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, 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=18occurred 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, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 22 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 30 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 261 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...