/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test26-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:42:00,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:42:00,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:42:00,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:42:00,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:42:00,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:42:00,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:42:00,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:42:00,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:42:00,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:42:00,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:42:00,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:42:00,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:42:00,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:42:00,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:42:00,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:42:00,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:42:00,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:42:00,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:42:00,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:42:00,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:42:00,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:42:00,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:42:00,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:42:00,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 22:42:00,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:42:00,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:42:00,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:42:00,223 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 [2020-07-21 22:42:00,263 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:42:00,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:42:00,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:42:00,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:42:00,270 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:42:00,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:42:00,271 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:42:00,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:42:00,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:42:00,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:42:00,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:42:00,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:42:00,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:42:00,275 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:42:00,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:42:00,276 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:42:00,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:42:00,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:42:00,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:42:00,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:42:00,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:42:00,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:42:00,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:42:00,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:42:00,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:42:00,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:42:00,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:42:00,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:42:00,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:42:00,280 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 22:42:00,703 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:42:00,724 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:42:00,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:42:00,732 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:42:00,733 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:42:00,734 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test26-2.c [2020-07-21 22:42:00,835 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c712abfc/bcf7667ff10c4d2483b0d52f7eb55078/FLAGec437e822 [2020-07-21 22:42:01,565 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:42:01,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test26-2.c [2020-07-21 22:42:01,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c712abfc/bcf7667ff10c4d2483b0d52f7eb55078/FLAGec437e822 [2020-07-21 22:42:01,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c712abfc/bcf7667ff10c4d2483b0d52f7eb55078 [2020-07-21 22:42:01,862 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:42:01,867 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:42:01,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:42:01,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:42:01,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:42:01,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:42:01" (1/1) ... [2020-07-21 22:42:01,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ac6f3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:01, skipping insertion in model container [2020-07-21 22:42:01,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:42:01" (1/1) ... [2020-07-21 22:42:01,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:42:01,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:42:02,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:42:02,275 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:42:02,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:42:02,323 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:42:02,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:02 WrapperNode [2020-07-21 22:42:02,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:42:02,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:42:02,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:42:02,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:42:02,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:02" (1/1) ... [2020-07-21 22:42:02,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:02" (1/1) ... [2020-07-21 22:42:02,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:02" (1/1) ... [2020-07-21 22:42:02,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:02" (1/1) ... [2020-07-21 22:42:02,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:02" (1/1) ... [2020-07-21 22:42:02,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:02" (1/1) ... [2020-07-21 22:42:02,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:02" (1/1) ... [2020-07-21 22:42:02,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:42:02,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:42:02,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:42:02,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:42:02,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:02" (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 [2020-07-21 22:42:02,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:42:02,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:42:02,620 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2020-07-21 22:42:02,620 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:42:02,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:42:02,620 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2020-07-21 22:42:02,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 22:42:02,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 22:42:02,621 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:42:02,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:42:02,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 22:42:02,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 22:42:02,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:42:02,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 22:42:02,922 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:42:02,923 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 22:42:02,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:42:02 BoogieIcfgContainer [2020-07-21 22:42:02,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:42:02,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:42:02,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:42:02,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:42:02,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:42:01" (1/3) ... [2020-07-21 22:42:02,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b572c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:42:02, skipping insertion in model container [2020-07-21 22:42:02,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:42:02" (2/3) ... [2020-07-21 22:42:02,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b572c10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:42:02, skipping insertion in model container [2020-07-21 22:42:02,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:42:02" (3/3) ... [2020-07-21 22:42:02,952 INFO L109 eAbstractionObserver]: Analyzing ICFG test26-2.c [2020-07-21 22:42:02,971 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:42:02,982 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:42:03,040 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:42:03,146 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:42:03,150 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:42:03,150 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:42:03,151 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:42:03,151 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:42:03,151 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:42:03,151 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:42:03,151 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:42:03,206 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-21 22:42:03,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 22:42:03,216 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:42:03,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:42:03,218 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:42:03,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:42:03,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1573149608, now seen corresponding path program 1 times [2020-07-21 22:42:03,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:42:03,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467116794] [2020-07-21 22:42:03,239 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:42:03,410 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:42:03,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 22:42:03,412 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:42:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 22:42:03,441 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:42:03,490 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 22:42:03,492 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 22:42:03,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:42:03,738 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 5 could not be translated for associated CType STRUCT~~dummy?a~INT?b~INT# [2020-07-21 22:42:03,741 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 7 could not be translated for associated CType STRUCT~~dummy?a~INT?b~INT# [2020-07-21 22:42:03,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:42:03 BoogieIcfgContainer [2020-07-21 22:42:03,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:42:03,764 INFO L168 Benchmark]: Toolchain (without parser) took 1897.99 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 100.1 MB in the beginning and 146.7 MB in the end (delta: -46.6 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2020-07-21 22:42:03,765 INFO L168 Benchmark]: CDTParser took 0.64 ms. Allocated memory is still 137.4 MB. Free memory is still 117.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 22:42:03,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.89 ms. Allocated memory is still 137.4 MB. Free memory was 99.7 MB in the beginning and 89.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-21 22:42:03,769 INFO L168 Benchmark]: Boogie Preprocessor took 192.17 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 89.6 MB in the beginning and 179.5 MB in the end (delta: -90.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-07-21 22:42:03,770 INFO L168 Benchmark]: RCFGBuilder took 414.22 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 166.3 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-07-21 22:42:03,771 INFO L168 Benchmark]: TraceAbstraction took 823.79 ms. Allocated memory is still 202.4 MB. Free memory was 166.3 MB in the beginning and 146.7 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-07-21 22:42:03,777 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.64 ms. Allocated memory is still 137.4 MB. Free memory is still 117.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 453.89 ms. Allocated memory is still 137.4 MB. Free memory was 99.7 MB in the beginning and 89.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 192.17 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 89.6 MB in the beginning and 179.5 MB in the end (delta: -90.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 414.22 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 166.3 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 823.79 ms. Allocated memory is still 202.4 MB. Free memory was 166.3 MB in the beginning and 146.7 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 5 could not be translated for associated CType STRUCT~~dummy?a~INT?b~INT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 7 could not be translated for associated CType STRUCT~~dummy?a~INT?b~INT# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 24]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L3-L5] struct dummy { int a, b; } global = {0, 1}; VAL [\old(global)=null, \old(global)=null, global={2:0}] [L14] struct dummy *pd = &global; VAL [global={2:0}, pd={2:0}] [L16] CALL assign(&pd->b, &pd->b) VAL [global={2:0}, pa={2:4}, pb={2:4}] [L9] EXPR \read(*pb) [L9] *pa = *pb [L16] RET assign(&pd->b, &pd->b) VAL [global={2:0}, pd={2:0}] [L18] EXPR pd->a [L18] EXPR global.b VAL [global={2:0}, global.b=1, pd={2:0}, pd->a=0] [L18] COND TRUE pd->a != global.b [L24] __VERIFIER_error() VAL [global={2:0}, pd={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...