/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/list-properties/simple-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:17:28,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:17:28,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:17:28,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:17:28,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:17:28,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:17:28,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:17:28,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:17:28,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:17:28,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:17:28,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:17:28,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:17:28,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:17:28,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:17:28,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:17:28,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:17:28,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:17:28,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:17:28,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:17:28,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:17:28,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:17:28,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:17:28,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:17:28,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:17:28,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 16:17:28,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 16:17:28,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 16:17:28,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 16:17:28,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 16:17:28,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 16:17:28,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 16:17:28,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 16:17:28,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 16:17:28,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 16:17:28,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 16:17:28,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 16:17:28,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 16:17:28,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 16:17:28,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:17:28,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:17:28,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:17:28,390 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 16:17:28,405 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:17:28,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:17:28,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:17:28,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:17:28,407 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:17:28,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:17:28,408 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:17:28,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:17:28,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:17:28,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:17:28,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:17:28,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:17:28,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:17:28,409 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:17:28,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:17:28,409 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:17:28,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:17:28,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:17:28,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:17:28,410 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:17:28,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:17:28,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:17:28,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:17:28,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:17:28,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:17:28,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:17:28,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:17:28,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:17:28,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:17:28,412 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 16:17:28,707 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:17:28,721 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:17:28,725 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:17:28,726 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:17:28,726 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:17:28,727 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/simple-1.i [2020-07-21 16:17:28,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b56ba6bb1/4103c350774c4562b02335814161154c/FLAGb96855e67 [2020-07-21 16:17:29,299 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:17:29,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/simple-1.i [2020-07-21 16:17:29,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b56ba6bb1/4103c350774c4562b02335814161154c/FLAGb96855e67 [2020-07-21 16:17:29,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b56ba6bb1/4103c350774c4562b02335814161154c [2020-07-21 16:17:29,653 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:17:29,656 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:17:29,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:17:29,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:17:29,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:17:29,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:17:29" (1/1) ... [2020-07-21 16:17:29,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@289a8795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:17:29, skipping insertion in model container [2020-07-21 16:17:29,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:17:29" (1/1) ... [2020-07-21 16:17:29,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:17:29,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:17:30,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:17:30,118 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:17:30,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:17:30,236 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:17:30,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:17:30 WrapperNode [2020-07-21 16:17:30,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:17:30,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:17:30,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:17:30,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:17:30,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:17:30" (1/1) ... [2020-07-21 16:17:30,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:17:30" (1/1) ... [2020-07-21 16:17:30,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:17:30" (1/1) ... [2020-07-21 16:17:30,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:17:30" (1/1) ... [2020-07-21 16:17:30,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:17:30" (1/1) ... [2020-07-21 16:17:30,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:17:30" (1/1) ... [2020-07-21 16:17:30,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:17:30" (1/1) ... [2020-07-21 16:17:30,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:17:30,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:17:30,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:17:30,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:17:30,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:17:30" (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 16:17:30,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:17:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:17:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-21 16:17:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-21 16:17:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-07-21 16:17:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-07-21 16:17:30,376 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-07-21 16:17:30,377 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-21 16:17:30,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:17:30,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:17:30,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:17:30,377 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 16:17:30,377 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 16:17:30,378 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 16:17:30,378 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 16:17:30,378 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 16:17:30,378 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 16:17:30,378 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 16:17:30,378 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 16:17:30,378 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 16:17:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 16:17:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 16:17:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 16:17:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 16:17:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 16:17:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 16:17:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 16:17:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-21 16:17:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-21 16:17:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-07-21 16:17:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-07-21 16:17:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-07-21 16:17:30,380 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 16:17:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 16:17:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 16:17:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 16:17:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 16:17:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 16:17:30,381 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 16:17:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 16:17:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 16:17:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 16:17:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 16:17:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 16:17:30,382 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 16:17:30,384 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 16:17:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 16:17:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 16:17:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 16:17:30,385 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 16:17:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 16:17:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 16:17:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 16:17:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 16:17:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 16:17:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 16:17:30,386 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 16:17:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 16:17:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 16:17:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 16:17:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 16:17:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 16:17:30,387 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 16:17:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 16:17:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 16:17:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 16:17:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 16:17:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 16:17:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 16:17:30,388 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 16:17:30,389 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 16:17:30,389 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 16:17:30,389 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 16:17:30,389 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-21 16:17:30,389 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 16:17:30,390 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 16:17:30,390 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-21 16:17:30,390 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 16:17:30,390 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 16:17:30,390 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-21 16:17:30,390 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 16:17:30,391 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 16:17:30,391 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 16:17:30,391 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 16:17:30,391 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 16:17:30,391 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 16:17:30,391 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 16:17:30,391 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 16:17:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 16:17:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 16:17:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 16:17:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 16:17:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 16:17:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 16:17:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 16:17:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 16:17:30,392 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 16:17:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 16:17:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 16:17:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 16:17:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 16:17:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 16:17:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 16:17:30,393 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 16:17:30,394 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 16:17:30,394 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 16:17:30,394 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 16:17:30,394 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 16:17:30,394 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 16:17:30,394 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 16:17:30,394 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 16:17:30,394 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 16:17:30,395 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 16:17:30,395 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 16:17:30,395 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 16:17:30,395 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 16:17:30,395 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 16:17:30,395 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 16:17:30,395 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-21 16:17:30,395 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:17:30,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 16:17:30,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 16:17:30,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 16:17:30,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 16:17:30,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 16:17:30,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:17:30,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:17:30,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 16:17:30,739 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-21 16:17:30,870 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:17:30,870 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-21 16:17:30,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:17:30 BoogieIcfgContainer [2020-07-21 16:17:30,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:17:30,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:17:30,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:17:30,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:17:30,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:17:29" (1/3) ... [2020-07-21 16:17:30,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424c1301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:17:30, skipping insertion in model container [2020-07-21 16:17:30,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:17:30" (2/3) ... [2020-07-21 16:17:30,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424c1301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:17:30, skipping insertion in model container [2020-07-21 16:17:30,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:17:30" (3/3) ... [2020-07-21 16:17:30,884 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-1.i [2020-07-21 16:17:30,896 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:17:30,905 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:17:30,925 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:17:30,949 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:17:30,949 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:17:30,949 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:17:30,950 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:17:30,950 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:17:30,950 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:17:30,950 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:17:30,951 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:17:30,970 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-21 16:17:30,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 16:17:30,977 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:17:30,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:17:30,978 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:17:30,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:17:30,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1710443637, now seen corresponding path program 1 times [2020-07-21 16:17:30,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:17:30,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805685980] [2020-07-21 16:17:30,993 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 16:17:31,295 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:17:31,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:17:31,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 16:17:31,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:17:31,329 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 16:17:31,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:17:31,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805685980] [2020-07-21 16:17:31,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:17:31,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 16:17:31,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261736583] [2020-07-21 16:17:31,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 16:17:31,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:17:31,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 16:17:31,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 16:17:31,361 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-07-21 16:17:31,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:17:31,387 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2020-07-21 16:17:31,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 16:17:31,388 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-21 16:17:31,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:17:31,398 INFO L225 Difference]: With dead ends: 38 [2020-07-21 16:17:31,398 INFO L226 Difference]: Without dead ends: 18 [2020-07-21 16:17:31,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 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 16:17:31,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-21 16:17:31,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-21 16:17:31,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-21 16:17:31,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-07-21 16:17:31,457 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-07-21 16:17:31,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:17:31,458 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-07-21 16:17:31,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 16:17:31,458 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-21 16:17:31,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 16:17:31,459 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:17:31,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:17:31,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:17:31,673 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:17:31,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:17:31,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1041507629, now seen corresponding path program 1 times [2020-07-21 16:17:31,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:17:31,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739852298] [2020-07-21 16:17:31,676 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 16:17:31,827 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:17:31,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:17:31,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 16:17:31,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:17:31,942 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2020-07-21 16:17:31,943 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:17:31,953 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:17:31,954 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:17:31,954 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:11 [2020-07-21 16:17:31,986 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 16:17:31,987 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:17:31,990 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:17:31,990 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:17:31,991 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-07-21 16:17:32,002 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 16:17:32,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:17:32,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739852298] [2020-07-21 16:17:32,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:17:32,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 16:17:32,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160281653] [2020-07-21 16:17:32,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 16:17:32,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:17:32,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 16:17:32,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:17:32,007 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2020-07-21 16:17:32,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:17:32,118 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-07-21 16:17:32,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:17:32,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-07-21 16:17:32,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:17:32,120 INFO L225 Difference]: With dead ends: 33 [2020-07-21 16:17:32,120 INFO L226 Difference]: Without dead ends: 31 [2020-07-21 16:17:32,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 16:17:32,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-21 16:17:32,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-07-21 16:17:32,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-21 16:17:32,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-07-21 16:17:32,129 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2020-07-21 16:17:32,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:17:32,129 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-07-21 16:17:32,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 16:17:32,130 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-07-21 16:17:32,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 16:17:32,130 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:17:32,131 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:17:32,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:17:32,345 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:17:32,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:17:32,346 INFO L82 PathProgramCache]: Analyzing trace with hash 714847529, now seen corresponding path program 1 times [2020-07-21 16:17:32,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:17:32,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666351987] [2020-07-21 16:17:32,347 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 16:17:32,445 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:17:32,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:17:32,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 16:17:32,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:17:32,477 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 16:17:32,478 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:17:32,486 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:17:32,490 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 16:17:32,491 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:17:32,499 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:17:32,499 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:17:32,500 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2020-07-21 16:17:32,529 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 16:17:32,530 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:17:32,536 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:17:32,540 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 16:17:32,541 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:17:32,548 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:17:32,549 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:17:32,549 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2020-07-21 16:17:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:17:32,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:17:32,607 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2020-07-21 16:17:32,610 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-21 16:17:32,624 INFO L624 ElimStorePlain]: treesize reduction 19, result has 36.7 percent of original size [2020-07-21 16:17:32,624 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_$Pointer$.offset_14| vanished before elimination [2020-07-21 16:17:32,625 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-07-21 16:17:32,625 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:39, output treesize:11 [2020-07-21 16:17:32,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:17:32,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666351987] [2020-07-21 16:17:32,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:17:32,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2020-07-21 16:17:32,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884202437] [2020-07-21 16:17:32,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 16:17:32,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:17:32,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 16:17:32,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-21 16:17:32,653 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 8 states. [2020-07-21 16:17:32,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:17:32,766 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2020-07-21 16:17:32,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:17:32,766 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-07-21 16:17:32,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:17:32,767 INFO L225 Difference]: With dead ends: 37 [2020-07-21 16:17:32,768 INFO L226 Difference]: Without dead ends: 27 [2020-07-21 16:17:32,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-07-21 16:17:32,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-21 16:17:32,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2020-07-21 16:17:32,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-21 16:17:32,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-07-21 16:17:32,774 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2020-07-21 16:17:32,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:17:32,774 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-07-21 16:17:32,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 16:17:32,775 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-21 16:17:32,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 16:17:32,775 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:17:32,776 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:17:32,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:17:32,990 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:17:32,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:17:32,991 INFO L82 PathProgramCache]: Analyzing trace with hash -158216428, now seen corresponding path program 1 times [2020-07-21 16:17:32,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:17:32,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701615291] [2020-07-21 16:17:32,993 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 16:17:33,134 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:17:33,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 16:17:33,135 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:17:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 16:17:33,160 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 16:17:33,186 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 16:17:33,186 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 16:17:33,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:17:33,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:17:33 BoogieIcfgContainer [2020-07-21 16:17:33,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:17:33,428 INFO L168 Benchmark]: Toolchain (without parser) took 3773.95 ms. Allocated memory was 142.6 MB in the beginning and 254.3 MB in the end (delta: 111.7 MB). Free memory was 98.8 MB in the beginning and 203.5 MB in the end (delta: -104.7 MB). Peak memory consumption was 7.0 MB. Max. memory is 7.1 GB. [2020-07-21 16:17:33,429 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 142.6 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 16:17:33,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 579.94 ms. Allocated memory was 142.6 MB in the beginning and 200.3 MB in the end (delta: 57.7 MB). Free memory was 98.4 MB in the beginning and 166.7 MB in the end (delta: -68.3 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-07-21 16:17:33,431 INFO L168 Benchmark]: Boogie Preprocessor took 64.41 ms. Allocated memory is still 200.3 MB. Free memory was 166.7 MB in the beginning and 164.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-21 16:17:33,432 INFO L168 Benchmark]: RCFGBuilder took 571.48 ms. Allocated memory is still 200.3 MB. Free memory was 163.6 MB in the beginning and 121.2 MB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2020-07-21 16:17:33,433 INFO L168 Benchmark]: TraceAbstraction took 2550.97 ms. Allocated memory was 200.3 MB in the beginning and 254.3 MB in the end (delta: 54.0 MB). Free memory was 121.2 MB in the beginning and 203.5 MB in the end (delta: -82.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 16:17:33,437 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 142.6 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 579.94 ms. Allocated memory was 142.6 MB in the beginning and 200.3 MB in the end (delta: 57.7 MB). Free memory was 98.4 MB in the beginning and 166.7 MB in the end (delta: -68.3 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.41 ms. Allocated memory is still 200.3 MB. Free memory was 166.7 MB in the beginning and 164.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 571.48 ms. Allocated memory is still 200.3 MB. Free memory was 163.6 MB in the beginning and 121.2 MB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2550.97 ms. Allocated memory was 200.3 MB in the beginning and 254.3 MB in the end (delta: 54.0 MB). Free memory was 121.2 MB in the beginning and 203.5 MB in the end (delta: -82.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 538]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); VAL [a={-2:0}, malloc(sizeof(struct node))={-2:0}] [L522] COND FALSE !(a == 0) VAL [a={-2:0}, malloc(sizeof(struct node))={-2:0}] [L523] List t; [L524] List p = a; [L525] a->h = 2 VAL [a={-2:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] p->h = 1 [L528] t = (List) malloc(sizeof(struct node)) VAL [a={-2:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, t={-1:0}] [L529] COND FALSE !(t == 0) VAL [a={-2:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-1:0}] [L530] p->n = t [L531] EXPR p->n [L531] p = p->n [L526] COND FALSE !(__VERIFIER_nondet_int()) [L533] p->h = 2 [L534] p->n = 0 [L535] p = a VAL [a={-2:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, t={-1:0}] [L536] COND TRUE p!=0 [L537] EXPR p->h VAL [a={-2:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, p->h=1, t={-1:0}] [L537] COND TRUE p->h != 2 [L538] __VERIFIER_error() VAL [a={-2:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-2:0}, t={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 46 SDslu, 88 SDs, 0 SdLazy, 65 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 62 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 4040 SizeOfPredicates, 13 NumberOfNonLiveVariables, 195 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/4 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...