/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_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condgf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:41:05,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:41:05,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:41:05,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:41:05,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:41:05,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:41:05,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:41:05,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:41:05,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:41:05,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:41:05,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:41:05,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:41:05,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:41:05,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:41:05,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:41:05,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:41:05,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:41:05,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:41:05,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:41:05,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:41:05,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:41:05,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:41:05,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:41:05,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:41:05,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 16:41:05,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:41:05,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:41:05,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:41:05,947 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 16:41:05,986 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:41:05,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:41:05,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:41:05,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:41:05,988 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:41:05,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:41:05,991 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:41:05,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:41:05,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:41:05,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:41:05,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:41:05,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:41:05,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:41:05,992 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:41:05,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:41:05,992 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:41:05,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:41:05,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:41:05,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:41:05,996 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:41:05,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:41:05,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:41:05,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:41:05,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:41:05,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:41:05,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:41:05,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:41:05,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:41:05,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:41:05,999 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_VARIABLES 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 -> 2 [2020-07-21 16:41:06,342 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:41:06,363 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:41:06,366 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:41:06,368 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:41:06,368 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:41:06,370 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condgf.c [2020-07-21 16:41:06,440 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69ce5bb71/72bfd5efa1ee42ebb25d684e8f6b33cc/FLAG2b77e6e29 [2020-07-21 16:41:06,852 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:41:06,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condgf.c [2020-07-21 16:41:06,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69ce5bb71/72bfd5efa1ee42ebb25d684e8f6b33cc/FLAG2b77e6e29 [2020-07-21 16:41:07,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69ce5bb71/72bfd5efa1ee42ebb25d684e8f6b33cc [2020-07-21 16:41:07,250 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:41:07,253 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:41:07,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:41:07,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:41:07,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:41:07,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:41:07" (1/1) ... [2020-07-21 16:41:07,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d112012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:07, skipping insertion in model container [2020-07-21 16:41:07,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:41:07" (1/1) ... [2020-07-21 16:41:07,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:41:07,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:41:07,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:41:07,496 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:41:07,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:41:07,538 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:41:07,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:07 WrapperNode [2020-07-21 16:41:07,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:41:07,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:41:07,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:41:07,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:41:07,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:07" (1/1) ... [2020-07-21 16:41:07,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:07" (1/1) ... [2020-07-21 16:41:07,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:07" (1/1) ... [2020-07-21 16:41:07,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:07" (1/1) ... [2020-07-21 16:41:07,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:07" (1/1) ... [2020-07-21 16:41:07,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:07" (1/1) ... [2020-07-21 16:41:07,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:07" (1/1) ... [2020-07-21 16:41:07,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:41:07,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:41:07,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:41:07,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:41:07,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:07" (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 16:41:07,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:41:07,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:41:07,799 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 16:41:07,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 16:41:07,799 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:41:07,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:41:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 16:41:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 16:41:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 16:41:07,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:41:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 16:41:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:41:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 16:41:07,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 16:41:07,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 16:41:07,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 16:41:07,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 16:41:07,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:41:07,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:41:08,160 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:41:08,161 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-21 16:41:08,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:41:08 BoogieIcfgContainer [2020-07-21 16:41:08,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:41:08,166 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:41:08,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:41:08,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:41:08,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:41:07" (1/3) ... [2020-07-21 16:41:08,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ac86d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:41:08, skipping insertion in model container [2020-07-21 16:41:08,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:07" (2/3) ... [2020-07-21 16:41:08,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ac86d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:41:08, skipping insertion in model container [2020-07-21 16:41:08,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:41:08" (3/3) ... [2020-07-21 16:41:08,173 INFO L109 eAbstractionObserver]: Analyzing ICFG condgf.c [2020-07-21 16:41:08,184 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:41:08,191 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:41:08,206 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:41:08,230 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:41:08,230 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:41:08,230 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:41:08,230 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:41:08,230 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:41:08,230 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:41:08,231 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:41:08,231 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:41:08,250 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-07-21 16:41:08,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 16:41:08,256 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:41:08,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:41:08,258 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:41:08,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:41:08,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1314310818, now seen corresponding path program 1 times [2020-07-21 16:41:08,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:41:08,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224215848] [2020-07-21 16:41:08,274 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:41:08,398 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:41:08,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:41:08,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 16:41:08,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:41:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:41:08,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:41:08,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224215848] [2020-07-21 16:41:08,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:41:08,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 16:41:08,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822578665] [2020-07-21 16:41:08,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 16:41:08,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:41:08,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 16:41:08,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 16:41:08,457 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-07-21 16:41:08,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:41:08,484 INFO L93 Difference]: Finished difference Result 66 states and 87 transitions. [2020-07-21 16:41:08,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 16:41:08,485 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2020-07-21 16:41:08,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:41:08,493 INFO L225 Difference]: With dead ends: 66 [2020-07-21 16:41:08,493 INFO L226 Difference]: Without dead ends: 33 [2020-07-21 16:41:08,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 16:41:08,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-21 16:41:08,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-07-21 16:41:08,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-21 16:41:08,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-07-21 16:41:08,534 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2020-07-21 16:41:08,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:41:08,534 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-07-21 16:41:08,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 16:41:08,535 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-07-21 16:41:08,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 16:41:08,536 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:41:08,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:41:08,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:41:08,738 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:41:08,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:41:08,739 INFO L82 PathProgramCache]: Analyzing trace with hash 34447140, now seen corresponding path program 1 times [2020-07-21 16:41:08,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:41:08,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50567923] [2020-07-21 16:41:08,741 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:41:08,802 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:41:08,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:41:08,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 16:41:08,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:41:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:41:08,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:41:08,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50567923] [2020-07-21 16:41:08,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:41:08,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 16:41:08,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490077965] [2020-07-21 16:41:08,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 16:41:08,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:41:08,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 16:41:08,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 16:41:08,876 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-07-21 16:41:08,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:41:08,982 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2020-07-21 16:41:08,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 16:41:08,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-21 16:41:08,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:41:08,986 INFO L225 Difference]: With dead ends: 62 [2020-07-21 16:41:08,986 INFO L226 Difference]: Without dead ends: 44 [2020-07-21 16:41:08,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 16:41:08,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-21 16:41:08,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2020-07-21 16:41:09,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-21 16:41:09,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-07-21 16:41:09,001 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 24 [2020-07-21 16:41:09,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:41:09,002 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-07-21 16:41:09,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 16:41:09,002 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-07-21 16:41:09,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-21 16:41:09,003 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:41:09,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:41:09,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:41:09,219 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:41:09,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:41:09,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1408881596, now seen corresponding path program 1 times [2020-07-21 16:41:09,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:41:09,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760246067] [2020-07-21 16:41:09,221 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 16:41:09,286 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:41:09,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:41:09,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-21 16:41:09,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:41:09,351 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-21 16:41:09,351 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:41:09,361 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:41:09,362 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:41:09,362 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2020-07-21 16:41:09,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:41:09,392 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 23 treesize of output 22 [2020-07-21 16:41:09,393 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:41:09,424 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:41:09,425 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:41:09,425 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:30 [2020-07-21 16:41:09,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:41:09,517 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:41:09,517 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 46 [2020-07-21 16:41:09,521 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:41:09,553 INFO L624 ElimStorePlain]: treesize reduction 20, result has 64.9 percent of original size [2020-07-21 16:41:09,555 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-21 16:41:09,556 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:54, output treesize:37 [2020-07-21 16:41:09,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:41:09,705 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:41:09,706 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 22 [2020-07-21 16:41:09,707 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-21 16:41:09,732 INFO L624 ElimStorePlain]: treesize reduction 9, result has 71.9 percent of original size [2020-07-21 16:41:09,733 INFO L544 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:41:09,734 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:49, output treesize:10 [2020-07-21 16:41:09,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:41:09,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:41:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:41:16,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760246067] [2020-07-21 16:41:16,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:41:16,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2020-07-21 16:41:16,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658075367] [2020-07-21 16:41:16,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-21 16:41:16,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:41:16,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-21 16:41:16,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=238, Unknown=1, NotChecked=0, Total=306 [2020-07-21 16:41:16,249 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 18 states. [2020-07-21 16:41:28,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:41:28,447 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2020-07-21 16:41:28,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-21 16:41:28,447 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 31 [2020-07-21 16:41:28,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:41:28,451 INFO L225 Difference]: With dead ends: 76 [2020-07-21 16:41:28,452 INFO L226 Difference]: Without dead ends: 62 [2020-07-21 16:41:28,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=229, Invalid=640, Unknown=1, NotChecked=0, Total=870 [2020-07-21 16:41:28,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-07-21 16:41:28,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2020-07-21 16:41:28,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-07-21 16:41:28,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2020-07-21 16:41:28,465 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 31 [2020-07-21 16:41:28,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:41:28,465 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2020-07-21 16:41:28,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-21 16:41:28,465 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2020-07-21 16:41:28,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-21 16:41:28,467 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:41:28,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:41:28,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:41:28,682 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:41:28,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:41:28,682 INFO L82 PathProgramCache]: Analyzing trace with hash -728823226, now seen corresponding path program 1 times [2020-07-21 16:41:28,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:41:28,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336729255] [2020-07-21 16:41:28,684 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:41:28,732 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:41:28,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 16:41:28,733 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:41:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 16:41:28,748 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:41:28,773 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 16:41:28,773 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 16:41:28,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:41:29,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:41:29 BoogieIcfgContainer [2020-07-21 16:41:29,027 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:41:29,030 INFO L168 Benchmark]: Toolchain (without parser) took 21777.81 ms. Allocated memory was 147.8 MB in the beginning and 240.1 MB in the end (delta: 92.3 MB). Free memory was 105.7 MB in the beginning and 136.7 MB in the end (delta: -30.9 MB). Peak memory consumption was 61.3 MB. Max. memory is 7.1 GB. [2020-07-21 16:41:29,031 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 147.8 MB. Free memory was 124.1 MB in the beginning and 123.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 16:41:29,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.64 ms. Allocated memory is still 147.8 MB. Free memory was 105.3 MB in the beginning and 94.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-21 16:41:29,032 INFO L168 Benchmark]: Boogie Preprocessor took 172.61 ms. Allocated memory was 147.8 MB in the beginning and 206.0 MB in the end (delta: 58.2 MB). Free memory was 94.7 MB in the beginning and 183.5 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-21 16:41:29,033 INFO L168 Benchmark]: RCFGBuilder took 449.56 ms. Allocated memory is still 206.0 MB. Free memory was 183.5 MB in the beginning and 165.3 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2020-07-21 16:41:29,034 INFO L168 Benchmark]: TraceAbstraction took 20861.44 ms. Allocated memory was 206.0 MB in the beginning and 240.1 MB in the end (delta: 34.1 MB). Free memory was 164.6 MB in the beginning and 136.7 MB in the end (delta: 27.9 MB). Peak memory consumption was 62.0 MB. Max. memory is 7.1 GB. [2020-07-21 16:41:29,041 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 147.8 MB. Free memory was 124.1 MB in the beginning and 123.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.64 ms. Allocated memory is still 147.8 MB. Free memory was 105.3 MB in the beginning and 94.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 172.61 ms. Allocated memory was 147.8 MB in the beginning and 206.0 MB in the end (delta: 58.2 MB). Free memory was 94.7 MB in the beginning and 183.5 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 449.56 ms. Allocated memory is still 206.0 MB. Free memory was 183.5 MB in the beginning and 165.3 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 20861.44 ms. Allocated memory was 206.0 MB in the beginning and 240.1 MB in the end (delta: 34.1 MB). Free memory was 164.6 MB in the beginning and 136.7 MB in the end (delta: 27.9 MB). Peak memory consumption was 62.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=7, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={30614:0}] [L30] COND TRUE i