/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 false -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-eb0fd7c [2020-09-21 10:20:50,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:20:50,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:20:50,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:20:50,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:20:50,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:20:50,101 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:20:50,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:20:50,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:20:50,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:20:50,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:20:50,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:20:50,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:20:50,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:20:50,119 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:20:50,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:20:50,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:20:50,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:20:50,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:20:50,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:20:50,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:20:50,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:20:50,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:20:50,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:20:50,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:20:50,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:20:50,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:20:50,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:20:50,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:20:50,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:20:50,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:20:50,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:20:50,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:20:50,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:20:50,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:20:50,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:20:50,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:20:50,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:20:50,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:20:50,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:20:50,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:20:50,184 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 [2020-09-21 10:20:50,234 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:20:50,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:20:50,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:20:50,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:20:50,237 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:20:50,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:20:50,238 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:20:50,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:20:50,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:20:50,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:20:50,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:20:50,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:20:50,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:20:50,240 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:20:50,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:20:50,241 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:20:50,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:20:50,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:20:50,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:20:50,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:20:50,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:20:50,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:20:50,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:20:50,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:20:50,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:20:50,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:20:50,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:20:50,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:20:50,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:20:50,244 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 -> false [2020-09-21 10:20:50,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:20:50,775 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:20:50,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:20:50,781 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:20:50,781 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:20:50,782 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/1_3.i [2020-09-21 10:20:50,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0c34ff69/bc6b3537d20e4201a63ed774ed40dbf5/FLAG091f93e7b [2020-09-21 10:20:51,372 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:20:51,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/1_3.i [2020-09-21 10:20:51,381 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0c34ff69/bc6b3537d20e4201a63ed774ed40dbf5/FLAG091f93e7b [2020-09-21 10:20:51,701 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a0c34ff69/bc6b3537d20e4201a63ed774ed40dbf5 [2020-09-21 10:20:51,717 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:20:51,723 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:20:51,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:20:51,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:20:51,729 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:20:51,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:20:51" (1/1) ... [2020-09-21 10:20:51,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13d2c9f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:51, skipping insertion in model container [2020-09-21 10:20:51,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:20:51" (1/1) ... [2020-09-21 10:20:51,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:20:51,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:20:52,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:20:52,068 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:20:52,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:20:52,104 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:20:52,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:52 WrapperNode [2020-09-21 10:20:52,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:20:52,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:20:52,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:20:52,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:20:52,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:52" (1/1) ... [2020-09-21 10:20:52,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:52" (1/1) ... [2020-09-21 10:20:52,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:52" (1/1) ... [2020-09-21 10:20:52,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:52" (1/1) ... [2020-09-21 10:20:52,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:52" (1/1) ... [2020-09-21 10:20:52,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:52" (1/1) ... [2020-09-21 10:20:52,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:52" (1/1) ... [2020-09-21 10:20:52,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:20:52,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:20:52,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:20:52,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:20:52,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:52" (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 [2020-09-21 10:20:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:20:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:20:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-21 10:20:52,314 INFO L138 BoogieDeclarations]: Found implementation of procedure getrr [2020-09-21 10:20:52,314 INFO L138 BoogieDeclarations]: Found implementation of procedure getPtr [2020-09-21 10:20:52,314 INFO L138 BoogieDeclarations]: Found implementation of procedure freePtr [2020-09-21 10:20:52,314 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:20:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:20:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-21 10:20:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:20:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:20:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure getrr [2020-09-21 10:20:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:20:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:20:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure getPtr [2020-09-21 10:20:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure freePtr [2020-09-21 10:20:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:20:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:20:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:20:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:20:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:20:52,567 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:20:52,568 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 10:20:52,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:20:52 BoogieIcfgContainer [2020-09-21 10:20:52,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:20:52,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:20:52,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:20:52,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:20:52,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:20:51" (1/3) ... [2020-09-21 10:20:52,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f588431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:20:52, skipping insertion in model container [2020-09-21 10:20:52,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:20:52" (2/3) ... [2020-09-21 10:20:52,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f588431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:20:52, skipping insertion in model container [2020-09-21 10:20:52,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:20:52" (3/3) ... [2020-09-21 10:20:52,601 INFO L109 eAbstractionObserver]: Analyzing ICFG 1_3.i [2020-09-21 10:20:52,617 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:20:52,631 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:20:52,651 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:20:52,680 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:20:52,680 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:20:52,680 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:20:52,680 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:20:52,680 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:20:52,681 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:20:52,681 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:20:52,681 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:20:52,705 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-09-21 10:20:52,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 10:20:52,712 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:20:52,714 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] [2020-09-21 10:20:52,714 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:20:52,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:20:52,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1862665640, now seen corresponding path program 1 times [2020-09-21 10:20:52,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:20:52,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1420768827] [2020-09-21 10:20:52,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:20:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:53,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:20:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:53,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:20:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:53,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:20:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:20:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:20:53,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1420768827] [2020-09-21 10:20:53,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:20:53,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 10:20:53,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943264052] [2020-09-21 10:20:53,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 10:20:53,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:20:53,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 10:20:53,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:20:53,200 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 9 states. [2020-09-21 10:20:53,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:20:53,545 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-09-21 10:20:53,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 10:20:53,547 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-09-21 10:20:53,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:20:53,559 INFO L225 Difference]: With dead ends: 49 [2020-09-21 10:20:53,559 INFO L226 Difference]: Without dead ends: 27 [2020-09-21 10:20:53,564 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 [2020-09-21 10:20:53,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-21 10:20:53,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-09-21 10:20:53,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-21 10:20:53,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2020-09-21 10:20:53,626 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 20 [2020-09-21 10:20:53,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:20:53,627 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2020-09-21 10:20:53,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 10:20:53,628 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2020-09-21 10:20:53,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 10:20:53,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:20:53,629 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] [2020-09-21 10:20:53,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:20:53,630 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:20:53,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:20:53,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1146014323, now seen corresponding path program 1 times [2020-09-21 10:20:53,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:20:53,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324143723] [2020-09-21 10:20:53,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:20:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:20:53,661 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:20:53,662 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:20:53,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:20:53,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:20:53 BoogieIcfgContainer [2020-09-21 10:20:53,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:20:53,703 INFO L168 Benchmark]: Toolchain (without parser) took 1981.97 ms. Allocated memory was 149.4 MB in the beginning and 205.0 MB in the end (delta: 55.6 MB). Free memory was 104.1 MB in the beginning and 106.3 MB in the end (delta: -2.1 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2020-09-21 10:20:53,704 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 149.4 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 10:20:53,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.01 ms. Allocated memory is still 149.4 MB. Free memory was 103.5 MB in the beginning and 93.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:20:53,706 INFO L168 Benchmark]: Boogie Preprocessor took 123.00 ms. Allocated memory was 149.4 MB in the beginning and 205.0 MB in the end (delta: 55.6 MB). Free memory was 93.6 MB in the beginning and 183.1 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:20:53,707 INFO L168 Benchmark]: RCFGBuilder took 360.52 ms. Allocated memory is still 205.0 MB. Free memory was 183.1 MB in the beginning and 168.4 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-09-21 10:20:53,708 INFO L168 Benchmark]: TraceAbstraction took 1108.32 ms. Allocated memory is still 205.0 MB. Free memory was 167.8 MB in the beginning and 106.3 MB in the end (delta: 61.5 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:20:53,712 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 149.4 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 381.01 ms. Allocated memory is still 149.4 MB. Free memory was 103.5 MB in the beginning and 93.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.00 ms. Allocated memory was 149.4 MB in the beginning and 205.0 MB in the end (delta: 55.6 MB). Free memory was 93.6 MB in the beginning and 183.1 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 360.52 ms. Allocated memory is still 205.0 MB. Free memory was 183.1 MB in the beginning and 168.4 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1108.32 ms. Allocated memory is still 205.0 MB. Free memory was 167.8 MB in the beginning and 106.3 MB in the end (delta: 61.5 MB). Peak memory consumption was 61.5 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: 0.9s, 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...