/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/1_3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:01:50,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:01:50,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:01:50,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:01:50,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:01:50,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:01:50,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:01:50,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:01:50,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:01:50,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:01:50,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:01:50,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:01:50,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:01:50,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:01:50,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:01:50,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:01:50,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:01:50,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:01:50,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:01:50,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:01:50,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:01:50,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:01:50,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:01:50,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:01:50,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 12:01:50,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:01:50,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:01:50,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:01:50,444 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 12:01:50,475 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:01:50,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:01:50,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:01:50,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:01:50,478 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:01:50,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:01:50,478 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:01:50,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:01:50,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:01:50,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:01:50,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:01:50,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:01:50,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:01:50,481 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:01:50,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:01:50,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:01:50,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:01:50,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:01:50,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:01:50,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:01:50,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:01:50,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:01:50,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:01:50,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:01:50,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:01:50,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:01:50,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:01:50,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:01:50,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:01:50,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:01:50,779 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:01:50,794 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:01:50,798 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:01:50,799 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:01:50,800 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:01:50,801 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/1_3.i [2020-07-17 12:01:50,875 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9fffbe3d/1ddd6885c74d4a35abf91dbaaa193f11/FLAGfdc46dfbf [2020-07-17 12:01:51,327 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:01:51,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/1_3.i [2020-07-17 12:01:51,334 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9fffbe3d/1ddd6885c74d4a35abf91dbaaa193f11/FLAGfdc46dfbf [2020-07-17 12:01:51,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9fffbe3d/1ddd6885c74d4a35abf91dbaaa193f11 [2020-07-17 12:01:51,729 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:01:51,733 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:01:51,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:01:51,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:01:51,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:01:51,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:01:51" (1/1) ... [2020-07-17 12:01:51,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@350b76b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:51, skipping insertion in model container [2020-07-17 12:01:51,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:01:51" (1/1) ... [2020-07-17 12:01:51,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:01:51,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:01:51,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:01:51,955 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:01:51,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:01:51,991 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:01:51,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:51 WrapperNode [2020-07-17 12:01:51,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:01:51,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:01:51,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:01:51,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:01:52,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:51" (1/1) ... [2020-07-17 12:01:52,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:51" (1/1) ... [2020-07-17 12:01:52,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:51" (1/1) ... [2020-07-17 12:01:52,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:51" (1/1) ... [2020-07-17 12:01:52,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:51" (1/1) ... [2020-07-17 12:01:52,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:51" (1/1) ... [2020-07-17 12:01:52,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:51" (1/1) ... [2020-07-17 12:01:52,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:01:52,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:01:52,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:01:52,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:01:52,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-17 12:01:52,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:01:52,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:01:52,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-17 12:01:52,184 INFO L138 BoogieDeclarations]: Found implementation of procedure getrr [2020-07-17 12:01:52,184 INFO L138 BoogieDeclarations]: Found implementation of procedure getPtr [2020-07-17 12:01:52,184 INFO L138 BoogieDeclarations]: Found implementation of procedure freePtr [2020-07-17 12:01:52,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:01:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:01:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-17 12:01:52,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 12:01:52,186 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 12:01:52,186 INFO L130 BoogieDeclarations]: Found specification of procedure getrr [2020-07-17 12:01:52,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 12:01:52,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 12:01:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure getPtr [2020-07-17 12:01:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure freePtr [2020-07-17 12:01:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 12:01:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:01:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:01:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:01:52,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 12:01:52,429 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:01:52,429 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 12:01:52,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:01:52 BoogieIcfgContainer [2020-07-17 12:01:52,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:01:52,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:01:52,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:01:52,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:01:52,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:01:51" (1/3) ... [2020-07-17 12:01:52,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a97e53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:01:52, skipping insertion in model container [2020-07-17 12:01:52,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:51" (2/3) ... [2020-07-17 12:01:52,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a97e53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:01:52, skipping insertion in model container [2020-07-17 12:01:52,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:01:52" (3/3) ... [2020-07-17 12:01:52,442 INFO L109 eAbstractionObserver]: Analyzing ICFG 1_3.i [2020-07-17 12:01:52,452 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:01:52,460 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:01:52,476 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:01:52,500 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:01:52,501 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:01:52,501 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:01:52,501 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:01:52,501 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:01:52,501 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:01:52,501 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:01:52,502 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:01:52,523 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-07-17 12:01:52,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-17 12:01:52,530 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:01:52,531 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] [2020-07-17 12:01:52,532 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:01:52,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:01:52,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1862665640, now seen corresponding path program 1 times [2020-07-17 12:01:52,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:01:52,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795556436] [2020-07-17 12:01:52,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:01:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:52,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:01:52,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795556436] [2020-07-17 12:01:52,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:01:52,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 12:01:52,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303209925] [2020-07-17 12:01:52,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 12:01:52,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:01:52,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 12:01:52,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-17 12:01:52,956 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 9 states. [2020-07-17 12:01:53,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:01:53,249 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-07-17 12:01:53,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 12:01:53,251 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-07-17 12:01:53,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:01:53,260 INFO L225 Difference]: With dead ends: 49 [2020-07-17 12:01:53,260 INFO L226 Difference]: Without dead ends: 27 [2020-07-17 12:01:53,267 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 [2020-07-17 12:01:53,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-17 12:01:53,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-07-17 12:01:53,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-17 12:01:53,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2020-07-17 12:01:53,316 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 20 [2020-07-17 12:01:53,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:01:53,317 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2020-07-17 12:01:53,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 12:01:53,318 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2020-07-17 12:01:53,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-17 12:01:53,319 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:01:53,319 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] [2020-07-17 12:01:53,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:01:53,320 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:01:53,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:01:53,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1146014323, now seen corresponding path program 1 times [2020-07-17 12:01:53,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:01:53,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474176961] [2020-07-17 12:01:53,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:01:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:01:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 12:01:53,411 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 12:01:53,412 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 12:01:53,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 12:01:53,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 12:01:53 BoogieIcfgContainer [2020-07-17 12:01:53,445 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 12:01:53,448 INFO L168 Benchmark]: Toolchain (without parser) took 1715.66 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 103.7 MB in the beginning and 102.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 58.9 MB. Max. memory is 7.1 GB. [2020-07-17 12:01:53,449 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 12:01:53,450 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.75 ms. Allocated memory is still 146.3 MB. Free memory was 103.3 MB in the beginning and 93.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-17 12:01:53,451 INFO L168 Benchmark]: Boogie Preprocessor took 124.00 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 93.3 MB in the beginning and 182.0 MB in the end (delta: -88.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-17 12:01:53,452 INFO L168 Benchmark]: RCFGBuilder took 316.44 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 166.8 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-07-17 12:01:53,453 INFO L168 Benchmark]: TraceAbstraction took 1009.79 ms. Allocated memory is still 203.9 MB. Free memory was 166.2 MB in the beginning and 102.5 MB in the end (delta: 63.7 MB). Peak memory consumption was 63.7 MB. Max. memory is 7.1 GB. [2020-07-17 12:01:53,458 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 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.75 ms. Allocated memory is still 146.3 MB. Free memory was 103.3 MB in the beginning and 93.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.00 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 93.3 MB in the beginning and 182.0 MB in the end (delta: -88.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 316.44 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 166.8 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1009.79 ms. Allocated memory is still 203.9 MB. Free memory was 166.2 MB in the beginning and 102.5 MB in the end (delta: 63.7 MB). Peak memory consumption was 63.7 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; VAL [ptr1={0:0}] [L51] CALL, EXPR getPtr() [L37] CALL, EXPR getrr() [L30] rr * r = (rr *)malloc(sizeof *r); [L31] r -> state = 0 [L32] return r; VAL [\result={-1:0}, malloc(sizeof *r)={-1:0}, r={-1:0}] [L37] RET, EXPR getrr() VAL [getrr()={-1:0}] [L37] rr * r = getrr(); [L38] r -> state = 1 [L39] return r; VAL [\result={-1:0}, r={-1:0}] [L51] RET, EXPR getPtr() VAL [getPtr()={-1:0}, ptr1={0:0}] [L51] ptr1 = getPtr() [L52] CALL freePtr(ptr1) VAL [ptr={-1:0}] [L44] EXPR ptr -> state VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=1] [L44] (ptr -> state == 1) ? (0) : __blast_assert () VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=1] [L45] ptr -> state = 2 VAL [ptr={-1:0}, ptr={-1:0}] [L52] RET freePtr(ptr1) VAL [ptr1={-1:0}] [L54] CALL freePtr(ptr1) VAL [ptr={-1:0}] [L44] EXPR ptr -> state VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=2] [L44] (ptr -> state == 1) ? (0) : __blast_assert () VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=2] [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...