/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 NUM_FUNCTIONS --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/test22-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:53:55,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:53:55,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:53:55,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:53:55,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:53:55,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:53:55,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:53:55,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:53:55,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:53:55,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:53:55,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:53:55,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:53:55,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:53:55,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:53:55,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:53:55,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:53:55,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:53:55,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:53:55,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:53:55,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:53:55,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:53:55,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:53:55,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:53:55,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:53:55,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 13:53:55,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 13:53:55,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 13:53:55,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 13:53:55,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 13:53:55,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 13:53:55,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 13:53:55,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 13:53:55,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 13:53:55,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 13:53:55,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 13:53:55,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 13:53:55,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 13:53:55,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 13:53:55,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:53:55,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:53:55,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:53:55,438 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 [2020-07-20 13:53:55,454 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:53:55,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:53:55,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:53:55,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:53:55,457 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:53:55,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:53:55,457 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:53:55,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:53:55,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:53:55,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:53:55,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:53:55,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:53:55,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:53:55,459 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:53:55,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:53:55,460 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:53:55,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:53:55,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:53:55,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:53:55,460 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:53:55,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:53:55,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:53:55,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:53:55,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:53:55,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:53:55,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:53:55,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:53:55,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:53:55,463 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:53:55,463 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 -> NUM_FUNCTIONS 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 [2020-07-20 13:53:55,763 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:53:55,777 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:53:55,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:53:55,783 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:53:55,785 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:53:55,786 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-2.c [2020-07-20 13:53:55,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56959fc18/50f9f64e1b9d4cb19f10c3b1a78cb391/FLAG8005704e1 [2020-07-20 13:53:56,317 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:53:56,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test22-2.c [2020-07-20 13:53:56,328 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56959fc18/50f9f64e1b9d4cb19f10c3b1a78cb391/FLAG8005704e1 [2020-07-20 13:53:56,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56959fc18/50f9f64e1b9d4cb19f10c3b1a78cb391 [2020-07-20 13:53:56,726 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:53:56,730 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:53:56,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:53:56,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:53:56,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:53:56,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:53:56" (1/1) ... [2020-07-20 13:53:56,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44193db1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:56, skipping insertion in model container [2020-07-20 13:53:56,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:53:56" (1/1) ... [2020-07-20 13:53:56,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:53:56,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:53:57,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:53:57,009 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:53:57,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:53:57,042 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:53:57,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:57 WrapperNode [2020-07-20 13:53:57,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:53:57,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:53:57,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:53:57,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:53:57,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:57" (1/1) ... [2020-07-20 13:53:57,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:57" (1/1) ... [2020-07-20 13:53:57,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:57" (1/1) ... [2020-07-20 13:53:57,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:57" (1/1) ... [2020-07-20 13:53:57,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:57" (1/1) ... [2020-07-20 13:53:57,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:57" (1/1) ... [2020-07-20 13:53:57,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:57" (1/1) ... [2020-07-20 13:53:57,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:53:57,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:53:57,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:53:57,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:53:57,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:57" (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 [2020-07-20 13:53:57,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:53:57,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:53:57,231 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-07-20 13:53:57,231 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-07-20 13:53:57,231 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-20 13:53:57,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:53:57,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:53:57,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 13:53:57,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 13:53:57,232 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-20 13:53:57,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:53:57,232 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-07-20 13:53:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 13:53:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:53:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:53:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:53:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:53:57,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 13:53:57,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:53:57,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:53:57,543 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:53:57,544 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 13:53:57,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:53:57 BoogieIcfgContainer [2020-07-20 13:53:57,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:53:57,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:53:57,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:53:57,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:53:57,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:53:56" (1/3) ... [2020-07-20 13:53:57,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55986b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:53:57, skipping insertion in model container [2020-07-20 13:53:57,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:53:57" (2/3) ... [2020-07-20 13:53:57,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55986b88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:53:57, skipping insertion in model container [2020-07-20 13:53:57,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:53:57" (3/3) ... [2020-07-20 13:53:57,560 INFO L109 eAbstractionObserver]: Analyzing ICFG test22-2.c [2020-07-20 13:53:57,573 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:53:57,583 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:53:57,607 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:53:57,651 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:53:57,651 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:53:57,651 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:53:57,652 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:53:57,652 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:53:57,652 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:53:57,652 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:53:57,652 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:53:57,673 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-07-20 13:53:57,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-20 13:53:57,681 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:53:57,682 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:53:57,683 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:53:57,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:53:57,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1345538594, now seen corresponding path program 1 times [2020-07-20 13:53:57,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:53:57,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097187915] [2020-07-20 13:53:57,700 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 [2020-07-20 13:53:57,917 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:53:57,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:53:57,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 13:53:57,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:53:57,962 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 13:53:57,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:53:57,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097187915] [2020-07-20 13:53:57,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:53:57,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 13:53:57,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100353388] [2020-07-20 13:53:57,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 13:53:57,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:53:57,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 13:53:57,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:53:57,995 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2020-07-20 13:53:58,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:53:58,026 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2020-07-20 13:53:58,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 13:53:58,028 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2020-07-20 13:53:58,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:53:58,038 INFO L225 Difference]: With dead ends: 49 [2020-07-20 13:53:58,038 INFO L226 Difference]: Without dead ends: 31 [2020-07-20 13:53:58,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:53:58,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-20 13:53:58,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-07-20 13:53:58,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-20 13:53:58,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-07-20 13:53:58,089 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2020-07-20 13:53:58,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:53:58,092 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-07-20 13:53:58,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 13:53:58,092 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-07-20 13:53:58,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 13:53:58,094 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:53:58,095 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:53:58,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:53:58,311 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:53:58,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:53:58,312 INFO L82 PathProgramCache]: Analyzing trace with hash -213153012, now seen corresponding path program 1 times [2020-07-20 13:53:58,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:53:58,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383310332] [2020-07-20 13:53:58,316 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 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:53:58,474 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:53:58,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:53:58,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 53 conjunts are in the unsatisfiable core [2020-07-20 13:53:58,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:53:58,758 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 13:53:58,839 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 13:53:58,888 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-07-20 13:53:58,890 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:53:58,895 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-07-20 13:53:58,896 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:53:58,911 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:53:58,912 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:53:58,913 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:5 [2020-07-20 13:53:58,939 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-20 13:53:58,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:53:59,017 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:53:59,017 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2020-07-20 13:53:59,019 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 13:53:59,022 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-20 13:53:59,028 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:53:59,029 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-07-20 13:53:59,029 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:7 [2020-07-20 13:53:59,084 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 13:53:59,181 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 2, 1] term [2020-07-20 13:53:59,182 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 13:53:59,336 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 13:53:59,338 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-20 13:53:59,339 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 13:53:59,341 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 13:53:59,342 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 13:53:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-20 13:53:59,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383310332] [2020-07-20 13:53:59,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 13:53:59,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 28 [2020-07-20 13:53:59,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930758247] [2020-07-20 13:53:59,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-20 13:53:59,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:53:59,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-20 13:53:59,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2020-07-20 13:53:59,513 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 28 states. [2020-07-20 13:54:00,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:54:00,637 INFO L93 Difference]: Finished difference Result 116 states and 142 transitions. [2020-07-20 13:54:00,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-20 13:54:00,638 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 38 [2020-07-20 13:54:00,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:54:00,648 INFO L225 Difference]: With dead ends: 116 [2020-07-20 13:54:00,648 INFO L226 Difference]: Without dead ends: 108 [2020-07-20 13:54:00,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=339, Invalid=1731, Unknown=0, NotChecked=0, Total=2070 [2020-07-20 13:54:00,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-07-20 13:54:00,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 50. [2020-07-20 13:54:00,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-20 13:54:00,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2020-07-20 13:54:00,689 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 38 [2020-07-20 13:54:00,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:54:00,690 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2020-07-20 13:54:00,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-20 13:54:00,690 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2020-07-20 13:54:00,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 13:54:00,692 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:54:00,692 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1] [2020-07-20 13:54:00,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:54:00,906 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:54:00,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:54:00,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1234221366, now seen corresponding path program 1 times [2020-07-20 13:54:00,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:54:00,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656406354] [2020-07-20 13:54:00,908 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:54:01,001 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:54:01,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 13:54:01,002 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:54:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 13:54:01,023 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:54:01,082 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 13:54:01,085 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:54:01,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:54:01,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:54:01 BoogieIcfgContainer [2020-07-20 13:54:01,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:54:01,359 INFO L168 Benchmark]: Toolchain (without parser) took 4631.41 ms. Allocated memory was 137.9 MB in the beginning and 248.5 MB in the end (delta: 110.6 MB). Free memory was 102.2 MB in the beginning and 202.7 MB in the end (delta: -100.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-20 13:54:01,360 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 13:54:01,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.64 ms. Allocated memory is still 137.9 MB. Free memory was 101.8 MB in the beginning and 91.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-20 13:54:01,362 INFO L168 Benchmark]: Boogie Preprocessor took 124.91 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 91.4 MB in the beginning and 178.6 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-20 13:54:01,363 INFO L168 Benchmark]: RCFGBuilder took 381.08 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 159.7 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-07-20 13:54:01,363 INFO L168 Benchmark]: TraceAbstraction took 3806.35 ms. Allocated memory was 201.3 MB in the beginning and 248.5 MB in the end (delta: 47.2 MB). Free memory was 159.7 MB in the beginning and 202.7 MB in the end (delta: -43.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-07-20 13:54:01,367 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 311.64 ms. Allocated memory is still 137.9 MB. Free memory was 101.8 MB in the beginning and 91.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.91 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 91.4 MB in the beginning and 178.6 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 381.08 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 159.7 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3806.35 ms. Allocated memory was 201.3 MB in the beginning and 248.5 MB in the end (delta: 47.2 MB). Free memory was 159.7 MB in the beginning and 202.7 MB in the end (delta: -43.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 48]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] struct dummy d1, d2; VAL [\old(d1)=6, \old(d1)=9, \old(d2)=11, \old(d2)=7, d1={3:0}, d2={2:0}] [L32] CALL init() VAL [d1={3:0}, d2={2:0}] [L13] d1.a = __VERIFIER_nondet_int() [L14] d1.b = __VERIFIER_nondet_int() [L16] d2.a = __VERIFIER_nondet_int() [L17] d2.b = __VERIFIER_nondet_int() [L32] RET init() VAL [d1={3:0}, d2={2:0}] [L33] CALL, EXPR get_dummy() VAL [d1={3:0}, d2={2:0}] [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=257, __VERIFIER_nondet_bool() ? &d1 : &d2={3:0}, d1={3:0}, d2={2:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() VAL [d1={3:0}, d2={2:0}, get_dummy()={3:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() VAL [d1={3:0}, d2={2:0}] [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=-255, __VERIFIER_nondet_bool() ? &d1 : &d2={3:0}, d1={3:0}, d2={2:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() VAL [d1={3:0}, d2={2:0}, get_dummy()={3:0}, pd1={3:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() VAL [d1={3:0}, d2={2:0}] [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=-256, __VERIFIER_nondet_bool() ? &d1 : &d2={2:0}, d1={3:0}, d2={2:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() VAL [d1={3:0}, d2={2:0}, get_dummy()={2:0}, pd1={3:0}, pd2={3:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L34] int i = __VERIFIER_nondet_int(); [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L35] EXPR (*pd2).a [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 VAL [(*pd2).a=1, d1={3:0}, d2={2:0}, i=0, pd1={3:0}, pd1 != 0 && pd1 == pd2 && (*pd2).a > 0=1, pd2={3:0}, pd3={2:0}] [L35] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L36] int *pa = &pd1->a; [L37] EXPR pd3->a [L37] i = pd3->a - 10 [L38] EXPR \read(*pa) VAL [\read(*pa)=1, d1={3:0}, d2={2:0}, i=2, pa={3:0}, pd1={3:0}, pd2={3:0}, pd3={2:0}] [L38] COND FALSE !(i < *pa) [L41] CALL, EXPR check(pd2, i) VAL [\old(i)=2, d1={3:0}, d2={2:0}, s1={3:0}] [L27] EXPR s1->a [L27] return s1->a == i; [L41] RET, EXPR check(pd2, i) VAL [check(pd2, i)=0, d1={3:0}, d2={2:0}, i=2, pa={3:0}, pd1={3:0}, pd2={3:0}, pd3={2:0}] [L41] COND TRUE !check(pd2, i) [L48] __VERIFIER_error() VAL [d1={3:0}, d2={2:0}, i=2, pa={3:0}, pd1={3:0}, pd2={3:0}, pd3={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.6s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 91 SDtfs, 121 SDslu, 637 SDs, 0 SdLazy, 440 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=2, 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, 2 MinimizatonAttempts, 58 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 113 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 16244 SizeOfPredicates, 15 NumberOfNonLiveVariables, 350 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 24/36 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...