/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/recursive/McCarthy91-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 00:32:07,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 00:32:07,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 00:32:07,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 00:32:07,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 00:32:07,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 00:32:07,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 00:32:07,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 00:32:07,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 00:32:07,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 00:32:07,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 00:32:07,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 00:32:07,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 00:32:07,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 00:32:07,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 00:32:07,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 00:32:07,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 00:32:07,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 00:32:07,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 00:32:07,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 00:32:07,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 00:32:07,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 00:32:07,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 00:32:07,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 00:32:07,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 00:32:07,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 00:32:07,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 00:32:07,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 00:32:07,178 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 00:32:07,212 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 00:32:07,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 00:32:07,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 00:32:07,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 00:32:07,216 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 00:32:07,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 00:32:07,216 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 00:32:07,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 00:32:07,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 00:32:07,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 00:32:07,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 00:32:07,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 00:32:07,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 00:32:07,218 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 00:32:07,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 00:32:07,219 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 00:32:07,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 00:32:07,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 00:32:07,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 00:32:07,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 00:32:07,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 00:32:07,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 00:32:07,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 00:32:07,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 00:32:07,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 00:32:07,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 00:32:07,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:32:07,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 00:32:07,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 00:32:07,222 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 00:32:07,512 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 00:32:07,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 00:32:07,529 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 00:32:07,531 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 00:32:07,531 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 00:32:07,532 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/McCarthy91-1.c [2020-07-21 00:32:07,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5343c337/205bc2ef53274896bc8e9e787a3a0ec8/FLAGb3e27d66c [2020-07-21 00:32:08,077 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 00:32:08,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/McCarthy91-1.c [2020-07-21 00:32:08,083 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5343c337/205bc2ef53274896bc8e9e787a3a0ec8/FLAGb3e27d66c [2020-07-21 00:32:08,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e5343c337/205bc2ef53274896bc8e9e787a3a0ec8 [2020-07-21 00:32:08,459 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 00:32:08,462 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 00:32:08,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 00:32:08,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 00:32:08,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 00:32:08,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:32:08" (1/1) ... [2020-07-21 00:32:08,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@539b179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:08, skipping insertion in model container [2020-07-21 00:32:08,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:32:08" (1/1) ... [2020-07-21 00:32:08,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 00:32:08,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 00:32:08,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:32:08,681 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 00:32:08,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:32:08,714 INFO L208 MainTranslator]: Completed translation [2020-07-21 00:32:08,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:08 WrapperNode [2020-07-21 00:32:08,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 00:32:08,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 00:32:08,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 00:32:08,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 00:32:08,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:08" (1/1) ... [2020-07-21 00:32:08,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:08" (1/1) ... [2020-07-21 00:32:08,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:08" (1/1) ... [2020-07-21 00:32:08,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:08" (1/1) ... [2020-07-21 00:32:08,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:08" (1/1) ... [2020-07-21 00:32:08,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:08" (1/1) ... [2020-07-21 00:32:08,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:08" (1/1) ... [2020-07-21 00:32:08,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 00:32:08,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 00:32:08,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 00:32:08,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 00:32:08,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:08" (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 00:32:08,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 00:32:08,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 00:32:08,974 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2020-07-21 00:32:08,974 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 00:32:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 00:32:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 00:32:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2020-07-21 00:32:08,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 00:32:08,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 00:32:08,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 00:32:09,162 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 00:32:09,162 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 00:32:09,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:32:09 BoogieIcfgContainer [2020-07-21 00:32:09,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 00:32:09,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 00:32:09,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 00:32:09,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 00:32:09,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:32:08" (1/3) ... [2020-07-21 00:32:09,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d82ee15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:32:09, skipping insertion in model container [2020-07-21 00:32:09,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:08" (2/3) ... [2020-07-21 00:32:09,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d82ee15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:32:09, skipping insertion in model container [2020-07-21 00:32:09,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:32:09" (3/3) ... [2020-07-21 00:32:09,175 INFO L109 eAbstractionObserver]: Analyzing ICFG McCarthy91-1.c [2020-07-21 00:32:09,187 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 00:32:09,195 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 00:32:09,211 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 00:32:09,262 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 00:32:09,262 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 00:32:09,262 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 00:32:09,262 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 00:32:09,263 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 00:32:09,263 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 00:32:09,263 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 00:32:09,263 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 00:32:09,300 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-21 00:32:09,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 00:32:09,308 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:32:09,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:32:09,310 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:32:09,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:32:09,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1590359645, now seen corresponding path program 1 times [2020-07-21 00:32:09,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:32:09,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751432932] [2020-07-21 00:32:09,332 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 00:32:09,433 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:32:09,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 00:32:09,434 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 00:32:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 00:32:09,444 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 00:32:09,461 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 00:32:09,462 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 00:32:09,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:32:09,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:32:09 BoogieIcfgContainer [2020-07-21 00:32:09,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 00:32:09,696 INFO L168 Benchmark]: Toolchain (without parser) took 1234.12 ms. Allocated memory was 146.3 MB in the beginning and 208.1 MB in the end (delta: 61.9 MB). Free memory was 102.7 MB in the beginning and 160.7 MB in the end (delta: -58.0 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-07-21 00:32:09,698 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 00:32:09,699 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.28 ms. Allocated memory is still 146.3 MB. Free memory was 102.3 MB in the beginning and 93.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-21 00:32:09,700 INFO L168 Benchmark]: Boogie Preprocessor took 189.33 ms. Allocated memory was 146.3 MB in the beginning and 208.1 MB in the end (delta: 61.9 MB). Free memory was 93.0 MB in the beginning and 187.4 MB in the end (delta: -94.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-21 00:32:09,702 INFO L168 Benchmark]: RCFGBuilder took 261.02 ms. Allocated memory is still 208.1 MB. Free memory was 187.4 MB in the beginning and 175.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-07-21 00:32:09,703 INFO L168 Benchmark]: TraceAbstraction took 525.45 ms. Allocated memory is still 208.1 MB. Free memory was 174.9 MB in the beginning and 160.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-21 00:32:09,709 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 252.28 ms. Allocated memory is still 146.3 MB. Free memory was 102.3 MB in the beginning and 93.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 189.33 ms. Allocated memory was 146.3 MB in the beginning and 208.1 MB in the end (delta: 61.9 MB). Free memory was 93.0 MB in the beginning and 187.4 MB in the end (delta: -94.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 261.02 ms. Allocated memory is still 208.1 MB. Free memory was 187.4 MB in the beginning and 175.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 525.45 ms. Allocated memory is still 208.1 MB. Free memory was 174.9 MB in the beginning and 160.7 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 30]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L25] int x = __VERIFIER_nondet_int(); [L26] CALL, EXPR f91(x) VAL [\old(x)=102] [L16] COND TRUE x > 100 [L17] return x -10; VAL [\old(x)=102, \result=92, x=102] [L26] RET, EXPR f91(x) VAL [f91(x)=92, x=102] [L26] int result = f91(x); [L27] COND FALSE !(result == 91 || x > 102 && result == x - 10) VAL [result=92, x=102] [L30] __VERIFIER_error() VAL [result=92, x=102] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, 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=22occurred 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...