/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -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 [2020-08-19 06:49:23,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:49:23,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:49:23,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:49:23,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:49:23,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:49:23,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:49:23,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:49:23,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:49:23,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:49:23,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:49:23,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:49:23,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:49:23,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:49:23,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:49:23,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:49:23,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:49:23,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:49:23,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:49:23,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:49:23,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:49:23,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:49:23,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:49:23,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:49:23,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 06:49:23,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:49:23,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:49:23,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:49:23,591 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 [2020-08-19 06:49:23,632 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:49:23,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:49:23,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:49:23,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:49:23,634 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:49:23,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:49:23,635 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:49:23,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:49:23,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:49:23,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:49:23,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:49:23,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:49:23,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:49:23,637 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:49:23,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:49:23,638 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:49:23,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:49:23,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:49:23,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:49:23,639 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:49:23,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:49:23,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:49:23,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:49:23,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:49:23,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:49:23,640 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:49:23,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:49:23,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:49:23,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:49:23,641 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=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:49:23,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:49:23,980 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:49:23,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:49:23,985 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:49:23,985 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:49:23,986 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/1_3.i [2020-08-19 06:49:24,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe017883e/33d53ba36cea4046a17a5bd7d4628d77/FLAG9872875be [2020-08-19 06:49:24,510 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:49:24,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/1_3.i [2020-08-19 06:49:24,517 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe017883e/33d53ba36cea4046a17a5bd7d4628d77/FLAG9872875be [2020-08-19 06:49:24,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe017883e/33d53ba36cea4046a17a5bd7d4628d77 [2020-08-19 06:49:24,884 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:49:24,886 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:49:24,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:49:24,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:49:24,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:49:24,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:49:24" (1/1) ... [2020-08-19 06:49:24,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f1e44a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:24, skipping insertion in model container [2020-08-19 06:49:24,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:49:24" (1/1) ... [2020-08-19 06:49:24,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:49:24,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:49:25,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:49:25,125 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:49:25,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:49:25,158 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:49:25,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:25 WrapperNode [2020-08-19 06:49:25,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:49:25,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:49:25,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:49:25,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:49:25,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:25" (1/1) ... [2020-08-19 06:49:25,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:25" (1/1) ... [2020-08-19 06:49:25,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:25" (1/1) ... [2020-08-19 06:49:25,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:25" (1/1) ... [2020-08-19 06:49:25,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:25" (1/1) ... [2020-08-19 06:49:25,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:25" (1/1) ... [2020-08-19 06:49:25,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:25" (1/1) ... [2020-08-19 06:49:25,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:49:25,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:49:25,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:49:25,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:49:25,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:25" (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 [2020-08-19 06:49:25,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:49:25,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:49:25,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-19 06:49:25,336 INFO L138 BoogieDeclarations]: Found implementation of procedure getrr [2020-08-19 06:49:25,337 INFO L138 BoogieDeclarations]: Found implementation of procedure getPtr [2020-08-19 06:49:25,337 INFO L138 BoogieDeclarations]: Found implementation of procedure freePtr [2020-08-19 06:49:25,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:49:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:49:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-19 06:49:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:49:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 06:49:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure getrr [2020-08-19 06:49:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 06:49:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:49:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure getPtr [2020-08-19 06:49:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure freePtr [2020-08-19 06:49:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:49:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:49:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:49:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:49:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:49:25,560 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:49:25,561 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 06:49:25,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:49:25 BoogieIcfgContainer [2020-08-19 06:49:25,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:49:25,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:49:25,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:49:25,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:49:25,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:49:24" (1/3) ... [2020-08-19 06:49:25,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578ab7b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:49:25, skipping insertion in model container [2020-08-19 06:49:25,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:25" (2/3) ... [2020-08-19 06:49:25,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578ab7b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:49:25, skipping insertion in model container [2020-08-19 06:49:25,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:49:25" (3/3) ... [2020-08-19 06:49:25,575 INFO L109 eAbstractionObserver]: Analyzing ICFG 1_3.i [2020-08-19 06:49:25,614 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:49:25,623 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:49:25,651 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:49:25,682 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:49:25,682 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:49:25,683 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:49:25,683 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:49:25,683 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:49:25,683 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:49:25,683 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:49:25,683 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:49:25,706 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-19 06:49:25,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 06:49:25,713 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:25,714 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] [2020-08-19 06:49:25,715 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:25,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:25,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1862665640, now seen corresponding path program 1 times [2020-08-19 06:49:25,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:25,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210488250] [2020-08-19 06:49:25,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:25,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:26,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 06:49:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:26,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:26,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210488250] [2020-08-19 06:49:26,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:26,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 06:49:26,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227903651] [2020-08-19 06:49:26,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 06:49:26,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:26,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 06:49:26,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:49:26,117 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 9 states. [2020-08-19 06:49:26,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:26,432 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-08-19 06:49:26,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 06:49:26,434 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-08-19 06:49:26,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:26,444 INFO L225 Difference]: With dead ends: 49 [2020-08-19 06:49:26,444 INFO L226 Difference]: Without dead ends: 27 [2020-08-19 06:49:26,449 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 [2020-08-19 06:49:26,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-19 06:49:26,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-08-19 06:49:26,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-19 06:49:26,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2020-08-19 06:49:26,498 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 20 [2020-08-19 06:49:26,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:26,499 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2020-08-19 06:49:26,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 06:49:26,499 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2020-08-19 06:49:26,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-19 06:49:26,501 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:26,501 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] [2020-08-19 06:49:26,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:49:26,502 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:26,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:26,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1146014323, now seen corresponding path program 1 times [2020-08-19 06:49:26,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:26,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526356779] [2020-08-19 06:49:26,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:49:26,528 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:49:26,529 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:49:26,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:49:26,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:49:26 BoogieIcfgContainer [2020-08-19 06:49:26,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:49:26,557 INFO L168 Benchmark]: Toolchain (without parser) took 1670.34 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 104.6 MB in the beginning and 104.8 MB in the end (delta: -202.2 kB). Peak memory consumption was 62.7 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:26,558 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 06:49:26,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.54 ms. Allocated memory is still 141.6 MB. Free memory was 104.2 MB in the beginning and 94.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:26,560 INFO L168 Benchmark]: Boogie Preprocessor took 108.96 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 94.4 MB in the beginning and 183.0 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:26,561 INFO L168 Benchmark]: RCFGBuilder took 296.64 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 167.9 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:26,562 INFO L168 Benchmark]: TraceAbstraction took 987.28 ms. Allocated memory is still 204.5 MB. Free memory was 167.3 MB in the beginning and 104.8 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:26,566 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 272.54 ms. Allocated memory is still 141.6 MB. Free memory was 104.2 MB in the beginning and 94.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.96 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 94.4 MB in the beginning and 183.0 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 296.64 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 167.9 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 987.28 ms. Allocated memory is still 204.5 MB. Free memory was 167.3 MB in the beginning and 104.8 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 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...