/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/1_3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:43:59,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:43:59,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:43:59,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:43:59,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:43:59,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:43:59,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:43:59,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:43:59,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:43:59,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:43:59,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:43:59,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:43:59,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:43:59,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:43:59,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:43:59,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:43:59,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:43:59,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:43:59,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:43:59,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:43:59,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:43:59,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:43:59,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:43:59,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:43:59,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 22:43:59,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:43:59,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:43:59,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:43:59,762 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 [2020-08-18 22:43:59,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:43:59,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:43:59,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:43:59,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:43:59,803 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:43:59,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:43:59,804 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:43:59,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:43:59,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:43:59,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:43:59,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:43:59,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:43:59,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:43:59,806 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:43:59,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:43:59,806 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:43:59,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:43:59,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:43:59,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:43:59,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:43:59,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:43:59,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:43:59,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:43:59,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:43:59,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:43:59,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:43:59,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:43:59,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:43:59,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:43:59,809 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=5;interpolation-heuristic=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:44:00,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:44:00,131 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:44:00,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:44:00,136 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:44:00,136 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:44:00,137 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/1_3.i [2020-08-18 22:44:00,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74ba7fab2/72def18febf74229b7c917c2e9de5e14/FLAG8fe99ef27 [2020-08-18 22:44:00,685 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:44:00,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/1_3.i [2020-08-18 22:44:00,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74ba7fab2/72def18febf74229b7c917c2e9de5e14/FLAG8fe99ef27 [2020-08-18 22:44:01,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/74ba7fab2/72def18febf74229b7c917c2e9de5e14 [2020-08-18 22:44:01,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:44:01,069 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:44:01,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:44:01,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:44:01,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:44:01,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:44:01" (1/1) ... [2020-08-18 22:44:01,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb3d723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:01, skipping insertion in model container [2020-08-18 22:44:01,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:44:01" (1/1) ... [2020-08-18 22:44:01,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:44:01,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:44:01,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:44:01,299 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:44:01,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:44:01,335 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:44:01,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:01 WrapperNode [2020-08-18 22:44:01,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:44:01,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:44:01,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:44:01,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:44:01,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:01" (1/1) ... [2020-08-18 22:44:01,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:01" (1/1) ... [2020-08-18 22:44:01,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:01" (1/1) ... [2020-08-18 22:44:01,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:01" (1/1) ... [2020-08-18 22:44:01,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:01" (1/1) ... [2020-08-18 22:44:01,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:01" (1/1) ... [2020-08-18 22:44:01,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:01" (1/1) ... [2020-08-18 22:44:01,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:44:01,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:44:01,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:44:01,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:44:01,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:01" (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 [2020-08-18 22:44:01,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:44:01,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:44:01,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-18 22:44:01,551 INFO L138 BoogieDeclarations]: Found implementation of procedure getrr [2020-08-18 22:44:01,551 INFO L138 BoogieDeclarations]: Found implementation of procedure getPtr [2020-08-18 22:44:01,551 INFO L138 BoogieDeclarations]: Found implementation of procedure freePtr [2020-08-18 22:44:01,551 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:44:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:44:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-18 22:44:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:44:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 22:44:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure getrr [2020-08-18 22:44:01,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 22:44:01,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:44:01,553 INFO L130 BoogieDeclarations]: Found specification of procedure getPtr [2020-08-18 22:44:01,553 INFO L130 BoogieDeclarations]: Found specification of procedure freePtr [2020-08-18 22:44:01,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:44:01,553 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:44:01,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:44:01,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:44:01,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:44:01,815 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:44:01,815 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 22:44:01,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:44:01 BoogieIcfgContainer [2020-08-18 22:44:01,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:44:01,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:44:01,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:44:01,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:44:01,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:44:01" (1/3) ... [2020-08-18 22:44:01,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db161e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:44:01, skipping insertion in model container [2020-08-18 22:44:01,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:01" (2/3) ... [2020-08-18 22:44:01,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db161e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:44:01, skipping insertion in model container [2020-08-18 22:44:01,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:44:01" (3/3) ... [2020-08-18 22:44:01,835 INFO L109 eAbstractionObserver]: Analyzing ICFG 1_3.i [2020-08-18 22:44:01,845 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:44:01,853 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:44:01,867 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:44:01,893 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:44:01,893 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:44:01,893 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:44:01,893 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:44:01,894 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:44:01,894 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:44:01,894 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:44:01,894 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:44:01,913 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-18 22:44:01,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 22:44:01,918 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:44:01,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:44:01,920 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:44:01,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:44:01,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1862665640, now seen corresponding path program 1 times [2020-08-18 22:44:01,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:44:01,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822778228] [2020-08-18 22:44:01,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:44:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:44:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 22:44:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:44:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:44:02,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:44:02,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822778228] [2020-08-18 22:44:02,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:44:02,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 22:44:02,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776137996] [2020-08-18 22:44:02,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:44:02,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:44:02,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:44:02,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:44:02,321 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 9 states. [2020-08-18 22:44:02,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:44:02,675 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-08-18 22:44:02,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 22:44:02,678 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-08-18 22:44:02,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:44:02,687 INFO L225 Difference]: With dead ends: 49 [2020-08-18 22:44:02,688 INFO L226 Difference]: Without dead ends: 27 [2020-08-18 22:44:02,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-08-18 22:44:02,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-18 22:44:02,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-08-18 22:44:02,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-18 22:44:02,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2020-08-18 22:44:02,743 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 20 [2020-08-18 22:44:02,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:44:02,744 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2020-08-18 22:44:02,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:44:02,745 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2020-08-18 22:44:02,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 22:44:02,746 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:44:02,746 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:44:02,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:44:02,747 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:44:02,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:44:02,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1146014323, now seen corresponding path program 1 times [2020-08-18 22:44:02,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:44:02,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020922161] [2020-08-18 22:44:02,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:44:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:44:02,777 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:44:02,777 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:44:02,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:44:02,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:44:02 BoogieIcfgContainer [2020-08-18 22:44:02,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:44:02,806 INFO L168 Benchmark]: Toolchain (without parser) took 1735.94 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 101.3 MB in the beginning and 101.7 MB in the end (delta: -375.5 kB). Peak memory consumption was 55.2 MB. Max. memory is 7.1 GB. [2020-08-18 22:44:02,807 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory was 120.7 MB in the beginning and 120.3 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-18 22:44:02,808 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.04 ms. Allocated memory is still 146.3 MB. Free memory was 100.9 MB in the beginning and 91.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-18 22:44:02,809 INFO L168 Benchmark]: Boogie Preprocessor took 149.78 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 91.2 MB in the beginning and 179.2 MB in the end (delta: -88.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-18 22:44:02,810 INFO L168 Benchmark]: RCFGBuilder took 332.07 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 164.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-08-18 22:44:02,811 INFO L168 Benchmark]: TraceAbstraction took 982.71 ms. Allocated memory is still 201.9 MB. Free memory was 163.8 MB in the beginning and 101.7 MB in the end (delta: 62.1 MB). Peak memory consumption was 62.1 MB. Max. memory is 7.1 GB. [2020-08-18 22:44:02,815 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory was 120.7 MB in the beginning and 120.3 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 267.04 ms. Allocated memory is still 146.3 MB. Free memory was 100.9 MB in the beginning and 91.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 149.78 ms. Allocated memory was 146.3 MB in the beginning and 201.9 MB in the end (delta: 55.6 MB). Free memory was 91.2 MB in the beginning and 179.2 MB in the end (delta: -88.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 332.07 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 164.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 982.71 ms. Allocated memory is still 201.9 MB. Free memory was 163.8 MB in the beginning and 101.7 MB in the end (delta: 62.1 MB). Peak memory consumption was 62.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L50] rr * ptr1 = 0; [L51] CALL, EXPR getPtr() [L37] CALL, EXPR getrr() [L30] rr * r = (rr *)malloc(sizeof *r); [L31] r -> state = 0 [L32] return r; [L37] RET, EXPR getrr() [L37] rr * r = getrr(); [L38] r -> state = 1 [L39] return r; [L51] RET, EXPR getPtr() [L51] ptr1 = getPtr() [L52] CALL freePtr(ptr1) [L44] EXPR ptr -> state [L44] (ptr -> state == 1) ? (0) : __blast_assert () [L45] ptr -> state = 2 [L52] RET freePtr(ptr1) [L54] CALL freePtr(ptr1) [L44] EXPR ptr -> state [L44] (ptr -> state == 1) ? (0) : __blast_assert () [L44] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 18 SDslu, 84 SDs, 0 SdLazy, 100 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1482 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 incorrect! Received shutdown request...