/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/list-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:19:05,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:19:05,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:19:05,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:19:05,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:19:05,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:19:05,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:19:05,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:19:05,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:19:05,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:19:05,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:19:05,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:19:05,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:19:05,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:19:05,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:19:05,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:19:05,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:19:05,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:19:05,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:19:05,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:19:05,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:19:05,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:19:05,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:19:05,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:19:05,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 23:19:05,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 23:19:05,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 23:19:05,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 23:19:05,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 23:19:05,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-19 23:19:05,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 23:19:05,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 23:19:05,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 23:19:05,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 23:19:05,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 23:19:05,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 23:19:05,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 23:19:05,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 23:19:05,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:19:05,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:19:05,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:19:05,442 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 [2020-07-19 23:19:05,473 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:19:05,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:19:05,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:19:05,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:19:05,476 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:19:05,477 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:19:05,477 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:19:05,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:19:05,478 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:19:05,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:19:05,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:19:05,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:19:05,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:19:05,480 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:19:05,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:19:05,480 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:19:05,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:19:05,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:19:05,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:19:05,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:19:05,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:19:05,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:19:05,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:19:05,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:19:05,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:19:05,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:19:05,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:19:05,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:19:05,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:19:05,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-19 23:19:05,768 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:19:05,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:19:05,785 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:19:05,787 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:19:05,787 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:19:05,788 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list-2.i [2020-07-19 23:19:05,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a385dd15/4ba371f2cb564296ac3c637051548ed3/FLAG8eeeb30a0 [2020-07-19 23:19:06,378 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:19:06,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list-2.i [2020-07-19 23:19:06,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a385dd15/4ba371f2cb564296ac3c637051548ed3/FLAG8eeeb30a0 [2020-07-19 23:19:06,701 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a385dd15/4ba371f2cb564296ac3c637051548ed3 [2020-07-19 23:19:06,709 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:19:06,712 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:19:06,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:19:06,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:19:06,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:19:06,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:19:06" (1/1) ... [2020-07-19 23:19:06,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47942a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:06, skipping insertion in model container [2020-07-19 23:19:06,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:19:06" (1/1) ... [2020-07-19 23:19:06,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:19:06,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:19:07,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:19:07,273 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:19:07,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:19:07,434 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:19:07,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:07 WrapperNode [2020-07-19 23:19:07,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:19:07,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:19:07,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:19:07,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:19:07,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:07" (1/1) ... [2020-07-19 23:19:07,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:07" (1/1) ... [2020-07-19 23:19:07,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:07" (1/1) ... [2020-07-19 23:19:07,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:07" (1/1) ... [2020-07-19 23:19:07,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:07" (1/1) ... [2020-07-19 23:19:07,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:07" (1/1) ... [2020-07-19 23:19:07,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:07" (1/1) ... [2020-07-19 23:19:07,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:19:07,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:19:07,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:19:07,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:19:07,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:07" (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 [2020-07-19 23:19:07,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:19:07,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:19:07,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-19 23:19:07,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-19 23:19:07,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-07-19 23:19:07,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-07-19 23:19:07,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-07-19 23:19:07,577 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-19 23:19:07,577 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:19:07,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:19:07,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:19:07,578 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-19 23:19:07,578 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-19 23:19:07,578 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-19 23:19:07,578 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-19 23:19:07,579 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-19 23:19:07,579 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-19 23:19:07,579 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-19 23:19:07,579 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-19 23:19:07,579 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-19 23:19:07,579 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-19 23:19:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-19 23:19:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-19 23:19:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-19 23:19:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-19 23:19:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-19 23:19:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-19 23:19:07,580 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-19 23:19:07,581 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-19 23:19:07,581 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-07-19 23:19:07,581 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-07-19 23:19:07,581 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-07-19 23:19:07,581 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-19 23:19:07,581 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-19 23:19:07,581 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-19 23:19:07,581 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-19 23:19:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-19 23:19:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-19 23:19:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-19 23:19:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-19 23:19:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-19 23:19:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-19 23:19:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-19 23:19:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-19 23:19:07,582 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-19 23:19:07,583 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-19 23:19:07,583 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-19 23:19:07,583 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-19 23:19:07,583 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-19 23:19:07,583 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-19 23:19:07,583 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-19 23:19:07,583 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-19 23:19:07,583 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-19 23:19:07,583 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-19 23:19:07,583 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-19 23:19:07,584 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-19 23:19:07,584 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-19 23:19:07,584 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-19 23:19:07,584 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-19 23:19:07,584 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-19 23:19:07,584 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-19 23:19:07,584 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-19 23:19:07,585 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-19 23:19:07,585 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-19 23:19:07,585 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-19 23:19:07,585 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-19 23:19:07,585 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 23:19:07,585 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-19 23:19:07,585 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-19 23:19:07,586 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-19 23:19:07,586 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-19 23:19:07,586 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-19 23:19:07,586 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-19 23:19:07,586 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-19 23:19:07,586 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-19 23:19:07,586 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-19 23:19:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-19 23:19:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-19 23:19:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-19 23:19:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-19 23:19:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-19 23:19:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-19 23:19:07,587 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-19 23:19:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-19 23:19:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-19 23:19:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-19 23:19:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-19 23:19:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-19 23:19:07,588 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-19 23:19:07,589 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-19 23:19:07,589 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-19 23:19:07,589 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-19 23:19:07,589 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-19 23:19:07,589 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-19 23:19:07,589 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-19 23:19:07,589 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-19 23:19:07,590 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-19 23:19:07,590 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-19 23:19:07,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-19 23:19:07,590 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-19 23:19:07,590 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-19 23:19:07,590 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-19 23:19:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-19 23:19:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-19 23:19:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-19 23:19:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-19 23:19:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-19 23:19:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-19 23:19:07,591 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-19 23:19:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-19 23:19:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-19 23:19:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-19 23:19:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-19 23:19:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-19 23:19:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-19 23:19:07,592 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-19 23:19:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-19 23:19:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-19 23:19:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-19 23:19:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:19:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-19 23:19:07,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 23:19:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-19 23:19:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-19 23:19:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 23:19:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:19:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:19:07,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 23:19:07,973 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-19 23:19:08,135 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:19:08,135 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-19 23:19:08,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:19:08 BoogieIcfgContainer [2020-07-19 23:19:08,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:19:08,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:19:08,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:19:08,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:19:08,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:19:06" (1/3) ... [2020-07-19 23:19:08,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496809b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:19:08, skipping insertion in model container [2020-07-19 23:19:08,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:19:07" (2/3) ... [2020-07-19 23:19:08,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@496809b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:19:08, skipping insertion in model container [2020-07-19 23:19:08,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:19:08" (3/3) ... [2020-07-19 23:19:08,149 INFO L109 eAbstractionObserver]: Analyzing ICFG list-2.i [2020-07-19 23:19:08,161 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:19:08,170 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:19:08,185 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:19:08,208 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:19:08,208 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:19:08,209 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:19:08,209 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:19:08,209 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:19:08,209 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:19:08,210 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:19:08,210 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:19:08,229 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-07-19 23:19:08,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-19 23:19:08,236 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:08,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:08,238 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:08,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:08,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1613857984, now seen corresponding path program 1 times [2020-07-19 23:19:08,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:08,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440892099] [2020-07-19 23:19:08,255 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@236d221d [2020-07-19 23:19:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:08,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440892099] [2020-07-19 23:19:08,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:19:08,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 23:19:08,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866426366] [2020-07-19 23:19:08,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 23:19:08,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:08,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 23:19:08,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 23:19:08,461 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-07-19 23:19:08,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:08,572 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions. [2020-07-19 23:19:08,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 23:19:08,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-07-19 23:19:08,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:08,583 INFO L225 Difference]: With dead ends: 56 [2020-07-19 23:19:08,584 INFO L226 Difference]: Without dead ends: 25 [2020-07-19 23:19:08,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 23:19:08,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-19 23:19:08,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-19 23:19:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-19 23:19:08,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-07-19 23:19:08,632 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2020-07-19 23:19:08,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:08,633 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-07-19 23:19:08,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 23:19:08,633 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-07-19 23:19:08,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-19 23:19:08,634 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:08,634 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] [2020-07-19 23:19:08,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:19:08,635 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:08,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:08,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1642379272, now seen corresponding path program 1 times [2020-07-19 23:19:08,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:08,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798231148] [2020-07-19 23:19:08,637 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@236d221d [2020-07-19 23:19:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:08,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798231148] [2020-07-19 23:19:08,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:19:08,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 23:19:08,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167500283] [2020-07-19 23:19:08,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 23:19:08,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:08,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 23:19:08,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:19:08,816 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 6 states. [2020-07-19 23:19:08,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:08,960 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-07-19 23:19:08,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 23:19:08,961 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-07-19 23:19:08,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:08,965 INFO L225 Difference]: With dead ends: 50 [2020-07-19 23:19:08,965 INFO L226 Difference]: Without dead ends: 46 [2020-07-19 23:19:08,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-19 23:19:08,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-19 23:19:08,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2020-07-19 23:19:08,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-19 23:19:08,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2020-07-19 23:19:08,976 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 20 [2020-07-19 23:19:08,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:08,976 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-07-19 23:19:08,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 23:19:08,976 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2020-07-19 23:19:08,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-19 23:19:08,977 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:08,978 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:08,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 23:19:08,978 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:08,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:08,979 INFO L82 PathProgramCache]: Analyzing trace with hash -2024806125, now seen corresponding path program 1 times [2020-07-19 23:19:08,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:08,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671058548] [2020-07-19 23:19:08,980 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@236d221d [2020-07-19 23:19:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:09,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671058548] [2020-07-19 23:19:09,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:19:09,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 23:19:09,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433565183] [2020-07-19 23:19:09,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 23:19:09,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:09,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 23:19:09,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:19:09,093 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 6 states. [2020-07-19 23:19:09,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:09,262 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-07-19 23:19:09,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 23:19:09,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-07-19 23:19:09,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:09,264 INFO L225 Difference]: With dead ends: 52 [2020-07-19 23:19:09,264 INFO L226 Difference]: Without dead ends: 44 [2020-07-19 23:19:09,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-19 23:19:09,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-19 23:19:09,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 32. [2020-07-19 23:19:09,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-19 23:19:09,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-07-19 23:19:09,278 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 22 [2020-07-19 23:19:09,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:09,282 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-07-19 23:19:09,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 23:19:09,283 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-07-19 23:19:09,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-19 23:19:09,284 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:09,284 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:09,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 23:19:09,285 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:09,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:09,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1000103149, now seen corresponding path program 1 times [2020-07-19 23:19:09,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:09,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388293525] [2020-07-19 23:19:09,288 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@236d221d [2020-07-19 23:19:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:09,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:09,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388293525] [2020-07-19 23:19:09,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:19:09,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-19 23:19:09,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69548108] [2020-07-19 23:19:09,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-19 23:19:09,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:09,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-19 23:19:09,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-19 23:19:09,392 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 6 states. [2020-07-19 23:19:09,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:09,498 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-07-19 23:19:09,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-19 23:19:09,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-07-19 23:19:09,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:09,500 INFO L225 Difference]: With dead ends: 52 [2020-07-19 23:19:09,500 INFO L226 Difference]: Without dead ends: 41 [2020-07-19 23:19:09,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-19 23:19:09,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-19 23:19:09,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2020-07-19 23:19:09,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-19 23:19:09,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-07-19 23:19:09,506 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 22 [2020-07-19 23:19:09,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:09,507 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-07-19 23:19:09,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-19 23:19:09,507 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-07-19 23:19:09,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-19 23:19:09,508 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:09,508 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:09,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-19 23:19:09,509 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:09,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:09,509 INFO L82 PathProgramCache]: Analyzing trace with hash 422878047, now seen corresponding path program 1 times [2020-07-19 23:19:09,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:09,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370723488] [2020-07-19 23:19:09,510 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@236d221d [2020-07-19 23:19:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:09,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:09,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370723488] [2020-07-19 23:19:09,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652488067] [2020-07-19 23:19:09,718 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1105f688 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:09,907 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1105f688 issued 3 check-sat command(s) [2020-07-19 23:19:09,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:19:09,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-19 23:19:09,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:19:10,012 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-07-19 23:19:10,013 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:10,021 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:10,022 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:10,023 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-07-19 23:19:10,082 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:10,082 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-07-19 23:19:10,113 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:10,116 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:10,124 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:10,132 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 11 treesize of output 7 [2020-07-19 23:19:10,133 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:10,142 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:10,143 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:10,143 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:18 [2020-07-19 23:19:10,174 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-07-19 23:19:10,175 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 1 case distinctions, treesize of input 27 treesize of output 11 [2020-07-19 23:19:10,176 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:10,181 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:10,181 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:10,182 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:12 [2020-07-19 23:19:10,194 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 19 treesize of output 18 [2020-07-19 23:19:10,196 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:10,204 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:10,207 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. [2020-07-19 23:19:10,207 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:19 [2020-07-19 23:19:10,241 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-19 23:19:10,242 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:10,247 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:10,249 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:10,249 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:26, output treesize:3 [2020-07-19 23:19:10,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:10,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:19:10,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2020-07-19 23:19:10,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096693945] [2020-07-19 23:19:10,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-19 23:19:10,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:10,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-19 23:19:10,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-07-19 23:19:10,255 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 10 states. [2020-07-19 23:19:10,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:10,553 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-07-19 23:19:10,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-19 23:19:10,553 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-07-19 23:19:10,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:10,555 INFO L225 Difference]: With dead ends: 54 [2020-07-19 23:19:10,555 INFO L226 Difference]: Without dead ends: 48 [2020-07-19 23:19:10,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2020-07-19 23:19:10,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-19 23:19:10,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 36. [2020-07-19 23:19:10,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-19 23:19:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-07-19 23:19:10,562 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 24 [2020-07-19 23:19:10,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:10,562 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-07-19 23:19:10,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-19 23:19:10,562 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-07-19 23:19:10,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-19 23:19:10,563 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:10,563 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:10,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:10,778 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:10,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:10,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1286279711, now seen corresponding path program 1 times [2020-07-19 23:19:10,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:10,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33049343] [2020-07-19 23:19:10,780 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@236d221d [2020-07-19 23:19:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:10,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:10,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33049343] [2020-07-19 23:19:10,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26354928] [2020-07-19 23:19:10,931 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@17acdcc9 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:11,067 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@17acdcc9 issued 3 check-sat command(s) [2020-07-19 23:19:11,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:19:11,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 30 conjunts are in the unsatisfiable core [2020-07-19 23:19:11,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:19:11,080 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-07-19 23:19:11,080 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:11,085 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:11,085 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:11,085 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-07-19 23:19:11,129 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:11,130 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-07-19 23:19:11,131 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:11,140 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:11,145 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 [2020-07-19 23:19:11,145 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:11,154 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:11,155 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:11,155 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:21 [2020-07-19 23:19:11,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-19 23:19:11,186 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2020-07-19 23:19:11,187 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:11,192 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:11,193 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:11,193 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:15 [2020-07-19 23:19:11,218 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 19 treesize of output 18 [2020-07-19 23:19:11,219 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:11,227 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:11,229 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. [2020-07-19 23:19:11,229 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:22 [2020-07-19 23:19:11,269 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-19 23:19:11,270 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:11,274 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:11,274 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:11,275 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:26, output treesize:3 [2020-07-19 23:19:11,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:11,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:19:11,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2020-07-19 23:19:11,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350710720] [2020-07-19 23:19:11,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-19 23:19:11,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:11,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-19 23:19:11,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-07-19 23:19:11,281 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 14 states. [2020-07-19 23:19:11,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:11,691 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2020-07-19 23:19:11,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-19 23:19:11,692 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2020-07-19 23:19:11,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:11,693 INFO L225 Difference]: With dead ends: 63 [2020-07-19 23:19:11,694 INFO L226 Difference]: Without dead ends: 59 [2020-07-19 23:19:11,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-07-19 23:19:11,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-07-19 23:19:11,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2020-07-19 23:19:11,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-19 23:19:11,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2020-07-19 23:19:11,701 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 24 [2020-07-19 23:19:11,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:11,702 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2020-07-19 23:19:11,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-19 23:19:11,702 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2020-07-19 23:19:11,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-19 23:19:11,703 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:11,703 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:11,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:11,905 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:11,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:11,906 INFO L82 PathProgramCache]: Analyzing trace with hash -562710342, now seen corresponding path program 1 times [2020-07-19 23:19:11,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:11,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005146005] [2020-07-19 23:19:11,907 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@236d221d [2020-07-19 23:19:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:12,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:12,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005146005] [2020-07-19 23:19:12,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583787063] [2020-07-19 23:19:12,116 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6c444dc0 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:12,218 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6c444dc0 issued 3 check-sat command(s) [2020-07-19 23:19:12,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:19:12,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 35 conjunts are in the unsatisfiable core [2020-07-19 23:19:12,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:19:12,230 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-07-19 23:19:12,230 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:12,232 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:12,233 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:12,233 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-07-19 23:19:12,275 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:12,276 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-07-19 23:19:12,277 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:12,284 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:12,284 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:12,284 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:14 [2020-07-19 23:19:12,323 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 13 treesize of output 9 [2020-07-19 23:19:12,324 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:12,336 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:12,345 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 13 treesize of output 9 [2020-07-19 23:19:12,345 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:12,355 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:12,357 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:12,357 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:49, output treesize:38 [2020-07-19 23:19:12,395 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_int_22|], 2=[|v_#memory_$Pointer$.base_18|, |v_#memory_$Pointer$.offset_16|]} [2020-07-19 23:19:12,401 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 29 treesize of output 19 [2020-07-19 23:19:12,401 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:12,415 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:12,442 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:12,443 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 132 [2020-07-19 23:19:12,450 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-07-19 23:19:12,451 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-19 23:19:12,452 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:12,501 INFO L624 ElimStorePlain]: treesize reduction 48, result has 63.6 percent of original size [2020-07-19 23:19:12,506 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 52 [2020-07-19 23:19:12,507 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:12,515 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:12,515 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:12,516 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:139, output treesize:39 [2020-07-19 23:19:12,555 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 39 treesize of output 21 [2020-07-19 23:19:12,556 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:12,564 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:12,567 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 14 [2020-07-19 23:19:12,567 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:12,575 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:12,576 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:12,576 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:57, output treesize:11 [2020-07-19 23:19:12,602 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 [2020-07-19 23:19:12,603 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:12,605 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:12,606 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:12,606 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-07-19 23:19:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:12,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:19:12,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2020-07-19 23:19:12,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471883324] [2020-07-19 23:19:12,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-19 23:19:12,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:12,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-19 23:19:12,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-07-19 23:19:12,614 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 16 states. [2020-07-19 23:19:13,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:13,106 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-07-19 23:19:13,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-19 23:19:13,107 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 26 [2020-07-19 23:19:13,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:13,108 INFO L225 Difference]: With dead ends: 67 [2020-07-19 23:19:13,108 INFO L226 Difference]: Without dead ends: 63 [2020-07-19 23:19:13,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2020-07-19 23:19:13,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-19 23:19:13,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2020-07-19 23:19:13,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-07-19 23:19:13,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2020-07-19 23:19:13,116 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 26 [2020-07-19 23:19:13,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:13,116 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2020-07-19 23:19:13,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-19 23:19:13,117 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2020-07-19 23:19:13,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-19 23:19:13,118 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:13,118 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:13,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:13,319 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:13,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:13,320 INFO L82 PathProgramCache]: Analyzing trace with hash 449917269, now seen corresponding path program 1 times [2020-07-19 23:19:13,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:13,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517336617] [2020-07-19 23:19:13,321 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@236d221d [2020-07-19 23:19:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:13,464 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:13,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517336617] [2020-07-19 23:19:13,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864427870] [2020-07-19 23:19:13,465 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@12897e54 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:13,574 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@12897e54 issued 3 check-sat command(s) [2020-07-19 23:19:13,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:19:13,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 34 conjunts are in the unsatisfiable core [2020-07-19 23:19:13,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:19:13,585 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-07-19 23:19:13,585 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:13,589 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:13,590 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:13,590 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-07-19 23:19:13,636 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:13,636 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-07-19 23:19:13,637 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:13,646 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:13,647 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:13,647 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:14 [2020-07-19 23:19:13,680 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 13 treesize of output 9 [2020-07-19 23:19:13,681 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:13,692 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:13,698 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 13 treesize of output 9 [2020-07-19 23:19:13,699 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:13,712 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:13,714 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:13,714 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:49, output treesize:38 [2020-07-19 23:19:13,753 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_int_23|], 2=[|v_#memory_$Pointer$.offset_18|, |v_#memory_$Pointer$.base_20|]} [2020-07-19 23:19:13,759 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 29 treesize of output 19 [2020-07-19 23:19:13,760 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:13,773 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:13,779 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 85 [2020-07-19 23:19:13,780 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:13,790 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:13,833 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:13,834 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 69 [2020-07-19 23:19:13,835 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[4, 3, 2, 1] term [2020-07-19 23:19:13,836 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-19 23:19:13,837 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:13,853 INFO L624 ElimStorePlain]: treesize reduction 36, result has 47.8 percent of original size [2020-07-19 23:19:13,854 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:13,854 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:139, output treesize:33 [2020-07-19 23:19:13,896 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 33 treesize of output 15 [2020-07-19 23:19:13,897 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:13,904 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:13,906 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-19 23:19:13,907 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:13,913 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:13,914 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:13,914 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:51, output treesize:11 [2020-07-19 23:19:13,948 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 [2020-07-19 23:19:13,949 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:13,951 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:13,951 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:13,951 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-07-19 23:19:13,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:13,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:19:13,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2020-07-19 23:19:13,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026464731] [2020-07-19 23:19:13,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-19 23:19:13,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:13,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-19 23:19:13,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-07-19 23:19:13,974 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand 17 states. [2020-07-19 23:19:14,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:14,500 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2020-07-19 23:19:14,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-19 23:19:14,501 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 28 [2020-07-19 23:19:14,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:14,502 INFO L225 Difference]: With dead ends: 69 [2020-07-19 23:19:14,502 INFO L226 Difference]: Without dead ends: 59 [2020-07-19 23:19:14,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-07-19 23:19:14,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-07-19 23:19:14,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2020-07-19 23:19:14,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-19 23:19:14,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-07-19 23:19:14,512 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 28 [2020-07-19 23:19:14,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:14,512 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-07-19 23:19:14,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-19 23:19:14,512 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-07-19 23:19:14,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-19 23:19:14,513 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:14,513 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:14,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:14,718 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:14,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:14,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1474620245, now seen corresponding path program 2 times [2020-07-19 23:19:14,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:14,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899957922] [2020-07-19 23:19:14,720 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@236d221d [2020-07-19 23:19:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:14,856 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:14,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899957922] [2020-07-19 23:19:14,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878078900] [2020-07-19 23:19:14,856 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1c7adf3f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:14,957 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1c7adf3f issued 3 check-sat command(s) [2020-07-19 23:19:14,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:19:14,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 34 conjunts are in the unsatisfiable core [2020-07-19 23:19:14,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:19:14,966 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-07-19 23:19:14,966 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:14,968 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:14,968 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:14,968 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-07-19 23:19:15,004 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:15,005 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-07-19 23:19:15,006 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:15,012 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:15,012 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:15,012 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:14 [2020-07-19 23:19:15,041 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 13 treesize of output 9 [2020-07-19 23:19:15,042 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:15,050 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:15,056 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 13 treesize of output 9 [2020-07-19 23:19:15,056 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:15,070 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:15,071 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:15,071 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:49, output treesize:38 [2020-07-19 23:19:15,103 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_int_24|], 2=[|v_#memory_$Pointer$.base_22|, |v_#memory_$Pointer$.offset_20|]} [2020-07-19 23:19:15,108 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 29 treesize of output 19 [2020-07-19 23:19:15,109 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:15,154 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:15,180 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:15,181 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 132 [2020-07-19 23:19:15,185 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-07-19 23:19:15,186 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-19 23:19:15,187 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:15,209 INFO L624 ElimStorePlain]: treesize reduction 48, result has 63.6 percent of original size [2020-07-19 23:19:15,213 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 52 [2020-07-19 23:19:15,215 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:15,222 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:15,222 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:15,223 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:139, output treesize:33 [2020-07-19 23:19:15,255 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 33 treesize of output 15 [2020-07-19 23:19:15,256 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:15,263 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:15,266 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-19 23:19:15,267 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:15,272 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:15,273 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:15,273 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:51, output treesize:11 [2020-07-19 23:19:15,303 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 [2020-07-19 23:19:15,304 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:15,306 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:15,306 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:15,306 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-07-19 23:19:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:15,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:19:15,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2020-07-19 23:19:15,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859393569] [2020-07-19 23:19:15,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-19 23:19:15,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:15,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-19 23:19:15,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2020-07-19 23:19:15,341 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 17 states. [2020-07-19 23:19:15,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:15,798 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-07-19 23:19:15,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-19 23:19:15,798 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 28 [2020-07-19 23:19:15,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:15,799 INFO L225 Difference]: With dead ends: 62 [2020-07-19 23:19:15,799 INFO L226 Difference]: Without dead ends: 49 [2020-07-19 23:19:15,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-07-19 23:19:15,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-19 23:19:15,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2020-07-19 23:19:15,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-19 23:19:15,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-07-19 23:19:15,804 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 28 [2020-07-19 23:19:15,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:15,804 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-07-19 23:19:15,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-19 23:19:15,804 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-07-19 23:19:15,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-19 23:19:15,805 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:15,805 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:16,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:16,013 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:16,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:16,014 INFO L82 PathProgramCache]: Analyzing trace with hash -149429434, now seen corresponding path program 2 times [2020-07-19 23:19:16,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:16,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016634583] [2020-07-19 23:19:16,015 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@236d221d [2020-07-19 23:19:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:16,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:16,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016634583] [2020-07-19 23:19:16,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142678590] [2020-07-19 23:19:16,220 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6d2477c No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:16,368 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6d2477c issued 3 check-sat command(s) [2020-07-19 23:19:16,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:19:16,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-19 23:19:16,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:19:16,378 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-07-19 23:19:16,379 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:16,381 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:16,381 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:16,381 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-07-19 23:19:16,437 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:16,438 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-07-19 23:19:16,439 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:16,440 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:16,450 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:16,455 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 [2020-07-19 23:19:16,457 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:16,464 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:16,464 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:16,465 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:18 [2020-07-19 23:19:16,509 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-07-19 23:19:16,509 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 1 case distinctions, treesize of input 27 treesize of output 11 [2020-07-19 23:19:16,510 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:16,516 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:16,516 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:16,517 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:12 [2020-07-19 23:19:16,543 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 19 treesize of output 18 [2020-07-19 23:19:16,544 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:16,549 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:16,549 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:16,550 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2020-07-19 23:19:16,593 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-07-19 23:19:16,594 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2020-07-19 23:19:16,595 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:16,601 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:16,602 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. [2020-07-19 23:19:16,603 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:19 [2020-07-19 23:19:16,675 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:16,676 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 76 [2020-07-19 23:19:16,679 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:16,744 INFO L624 ElimStorePlain]: treesize reduction 32, result has 56.8 percent of original size [2020-07-19 23:19:16,747 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:16,748 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:16,749 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:16,750 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:16,751 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:16,753 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-19 23:19:16,753 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:30, output treesize:42 [2020-07-19 23:19:16,754 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:16,755 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:16,755 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:16,756 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:16,757 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:18,021 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:18,022 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:18,022 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:18,023 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:18,024 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:18,114 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 4, 1] term [2020-07-19 23:19:18,115 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-19 23:19:18,160 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-19 23:19:18,161 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:18,164 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:18,165 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:18,165 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:26, output treesize:3 [2020-07-19 23:19:18,169 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:18,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:19:18,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2020-07-19 23:19:18,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303383926] [2020-07-19 23:19:18,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-19 23:19:18,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:18,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-19 23:19:18,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=394, Unknown=2, NotChecked=0, Total=462 [2020-07-19 23:19:18,171 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 22 states. [2020-07-19 23:19:18,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:18,739 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-07-19 23:19:18,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-19 23:19:18,739 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 28 [2020-07-19 23:19:18,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:18,740 INFO L225 Difference]: With dead ends: 62 [2020-07-19 23:19:18,740 INFO L226 Difference]: Without dead ends: 58 [2020-07-19 23:19:18,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=164, Invalid=826, Unknown=2, NotChecked=0, Total=992 [2020-07-19 23:19:18,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-19 23:19:18,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 48. [2020-07-19 23:19:18,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-19 23:19:18,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-07-19 23:19:18,755 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 28 [2020-07-19 23:19:18,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:18,755 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-07-19 23:19:18,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-19 23:19:18,756 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-07-19 23:19:18,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-19 23:19:18,756 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:18,757 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:18,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:18,958 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:18,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:18,958 INFO L82 PathProgramCache]: Analyzing trace with hash 150272518, now seen corresponding path program 1 times [2020-07-19 23:19:18,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:18,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566911740] [2020-07-19 23:19:18,959 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@236d221d [2020-07-19 23:19:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:19,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:19,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566911740] [2020-07-19 23:19:19,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827493542] [2020-07-19 23:19:19,152 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7047cb6c No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:19,304 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7047cb6c issued 3 check-sat command(s) [2020-07-19 23:19:19,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:19:19,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 40 conjunts are in the unsatisfiable core [2020-07-19 23:19:19,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:19:19,323 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-07-19 23:19:19,323 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:19,331 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:19,332 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:19,332 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-07-19 23:19:19,359 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:19,359 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-19 23:19:19,360 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:19,390 INFO L624 ElimStorePlain]: treesize reduction 14, result has 71.4 percent of original size [2020-07-19 23:19:19,394 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 11 treesize of output 7 [2020-07-19 23:19:19,394 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:19,407 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:19,407 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:19,408 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:37, output treesize:31 [2020-07-19 23:19:19,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-19 23:19:19,449 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2020-07-19 23:19:19,450 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:19,462 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:19,463 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:19,463 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:25 [2020-07-19 23:19:19,514 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:19,514 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 16 treesize of output 26 [2020-07-19 23:19:19,515 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:19,529 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:19,535 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-07-19 23:19:19,536 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:19,547 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:19,547 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:19,548 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:30 [2020-07-19 23:19:19,598 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 1] term [2020-07-19 23:19:19,599 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 3 disjuncts [2020-07-19 23:19:19,612 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-07-19 23:19:19,613 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2020-07-19 23:19:19,613 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:19,622 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:19,624 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. [2020-07-19 23:19:19,624 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:49, output treesize:30 [2020-07-19 23:19:19,680 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2020-07-19 23:19:19,681 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:19,693 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:19,696 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-19 23:19:19,696 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:41, output treesize:37 [2020-07-19 23:19:19,760 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2020-07-19 23:19:19,761 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:19,767 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:19,768 INFO L544 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:19,768 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:41, output treesize:3 [2020-07-19 23:19:19,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:19,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:19:19,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 19 [2020-07-19 23:19:19,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585696646] [2020-07-19 23:19:19,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-19 23:19:19,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:19,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-19 23:19:19,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-07-19 23:19:19,808 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 19 states. [2020-07-19 23:19:20,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:20,488 INFO L93 Difference]: Finished difference Result 86 states and 100 transitions. [2020-07-19 23:19:20,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-19 23:19:20,489 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 28 [2020-07-19 23:19:20,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:20,490 INFO L225 Difference]: With dead ends: 86 [2020-07-19 23:19:20,490 INFO L226 Difference]: Without dead ends: 80 [2020-07-19 23:19:20,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2020-07-19 23:19:20,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-07-19 23:19:20,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 56. [2020-07-19 23:19:20,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-19 23:19:20,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2020-07-19 23:19:20,497 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 28 [2020-07-19 23:19:20,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:20,498 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2020-07-19 23:19:20,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-19 23:19:20,498 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2020-07-19 23:19:20,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-19 23:19:20,499 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:20,499 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:20,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:20,709 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:20,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:20,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1819088671, now seen corresponding path program 1 times [2020-07-19 23:19:20,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:20,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27843324] [2020-07-19 23:19:20,711 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@236d221d [2020-07-19 23:19:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:20,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27843324] [2020-07-19 23:19:20,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877895923] [2020-07-19 23:19:20,910 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5280dba5 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:21,089 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5280dba5 issued 3 check-sat command(s) [2020-07-19 23:19:21,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:19:21,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 36 conjunts are in the unsatisfiable core [2020-07-19 23:19:21,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:19:21,105 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-07-19 23:19:21,106 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:21,114 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:21,115 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:21,115 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-07-19 23:19:21,138 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:21,138 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-07-19 23:19:21,139 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:21,148 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:21,152 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 11 treesize of output 7 [2020-07-19 23:19:21,153 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:21,162 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:21,163 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:21,163 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:21 [2020-07-19 23:19:21,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-19 23:19:21,177 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2020-07-19 23:19:21,178 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:21,184 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:21,184 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:21,184 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:15 [2020-07-19 23:19:21,191 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 19 treesize of output 18 [2020-07-19 23:19:21,192 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:21,202 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:21,202 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:21,203 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-07-19 23:19:21,243 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-07-19 23:19:21,243 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2020-07-19 23:19:21,244 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:21,253 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:21,255 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. [2020-07-19 23:19:21,255 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:44, output treesize:25 [2020-07-19 23:19:21,321 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:21,322 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 68 [2020-07-19 23:19:21,323 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:21,387 INFO L624 ElimStorePlain]: treesize reduction 28, result has 59.4 percent of original size [2020-07-19 23:19:21,392 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 23:19:21,393 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:21,394 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-07-19 23:19:21,394 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:33, output treesize:41 [2020-07-19 23:19:21,395 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 23:19:21,396 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:22,017 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 23:19:22,018 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:22,056 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 23:19:22,057 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:22,095 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 23:19:22,096 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:22,098 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-19 23:19:22,098 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:19:22,113 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-19 23:19:22,114 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:22,125 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-19 23:19:22,126 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:22,137 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:22,138 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 2 case distinctions, treesize of input 29 treesize of output 33 [2020-07-19 23:19:22,139 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:22,152 INFO L624 ElimStorePlain]: treesize reduction 30, result has 21.1 percent of original size [2020-07-19 23:19:22,153 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:22,154 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:86, output treesize:3 [2020-07-19 23:19:22,174 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:22,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:19:22,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 17 [2020-07-19 23:19:22,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384082209] [2020-07-19 23:19:22,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-19 23:19:22,176 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:22,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-19 23:19:22,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=229, Unknown=1, NotChecked=0, Total=272 [2020-07-19 23:19:22,177 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 17 states. [2020-07-19 23:19:28,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:28,640 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-07-19 23:19:28,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-19 23:19:28,641 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2020-07-19 23:19:28,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:28,642 INFO L225 Difference]: With dead ends: 81 [2020-07-19 23:19:28,642 INFO L226 Difference]: Without dead ends: 73 [2020-07-19 23:19:28,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=121, Invalid=578, Unknown=3, NotChecked=0, Total=702 [2020-07-19 23:19:28,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-19 23:19:28,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 63. [2020-07-19 23:19:28,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-07-19 23:19:28,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2020-07-19 23:19:28,658 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 30 [2020-07-19 23:19:28,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:28,658 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2020-07-19 23:19:28,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-19 23:19:28,658 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2020-07-19 23:19:28,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-19 23:19:28,659 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:28,659 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:28,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-07-19 23:19:28,876 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:28,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:28,877 INFO L82 PathProgramCache]: Analyzing trace with hash -794385695, now seen corresponding path program 3 times [2020-07-19 23:19:28,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:28,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438540761] [2020-07-19 23:19:28,878 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@236d221d [2020-07-19 23:19:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:19:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:29,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438540761] [2020-07-19 23:19:29,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756236813] [2020-07-19 23:19:29,153 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@232919c2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:29,342 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@232919c2 issued 3 check-sat command(s) [2020-07-19 23:19:29,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:19:29,345 WARN L261 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 58 conjunts are in the unsatisfiable core [2020-07-19 23:19:29,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:19:29,353 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2020-07-19 23:19:29,353 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:29,357 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:29,357 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:29,357 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-07-19 23:19:29,420 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:29,421 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-19 23:19:29,421 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:29,452 INFO L624 ElimStorePlain]: treesize reduction 14, result has 65.9 percent of original size [2020-07-19 23:19:29,453 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:29,453 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:27 [2020-07-19 23:19:29,495 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 13 treesize of output 9 [2020-07-19 23:19:29,496 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:29,512 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:29,517 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 13 treesize of output 9 [2020-07-19 23:19:29,518 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:29,532 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:29,533 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:29,533 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:62, output treesize:57 [2020-07-19 23:19:29,607 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:29,608 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 22 treesize of output 32 [2020-07-19 23:19:29,609 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:29,638 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:29,640 INFO L440 ElimStorePlain]: Different costs {0=[|v_#memory_int_40|], 2=[|v_#memory_$Pointer$.base_28|, |v_#memory_$Pointer$.offset_23|]} [2020-07-19 23:19:29,645 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 [2020-07-19 23:19:29,645 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:29,690 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:29,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-19 23:19:29,696 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 21 [2020-07-19 23:19:29,697 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:29,722 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:29,727 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2020-07-19 23:19:29,728 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:29,745 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:29,746 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:29,746 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:106, output treesize:53 [2020-07-19 23:19:29,821 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:29,822 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 193 treesize of output 175 [2020-07-19 23:19:29,823 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[10, 3, 2, 1] term [2020-07-19 23:19:29,824 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-07-19 23:19:29,824 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:29,892 INFO L624 ElimStorePlain]: treesize reduction 34, result has 85.4 percent of original size [2020-07-19 23:19:29,897 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 126 [2020-07-19 23:19:29,899 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:29,926 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:29,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-19 23:19:29,932 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 23 [2020-07-19 23:19:29,933 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:29,958 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:29,959 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:19:29,959 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:209, output treesize:155 [2020-07-19 23:19:30,020 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_42|], 6=[|v_#memory_$Pointer$.offset_25|, |v_#memory_$Pointer$.base_30|]} [2020-07-19 23:19:30,025 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 48 [2020-07-19 23:19:30,026 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:30,064 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:30,108 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:30,108 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 284 treesize of output 300 [2020-07-19 23:19:30,111 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:30,179 INFO L624 ElimStorePlain]: treesize reduction 140, result has 51.4 percent of original size [2020-07-19 23:19:30,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-19 23:19:30,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-19 23:19:30,201 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:30,202 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 81 [2020-07-19 23:19:30,203 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:30,258 INFO L624 ElimStorePlain]: treesize reduction 36, result has 74.1 percent of original size [2020-07-19 23:19:30,259 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-19 23:19:30,260 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:319, output treesize:103 [2020-07-19 23:19:30,337 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:30,338 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 54 [2020-07-19 23:19:30,339 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-07-19 23:19:30,340 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-07-19 23:19:30,341 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-19 23:19:30,384 INFO L624 ElimStorePlain]: treesize reduction 14, result has 80.6 percent of original size [2020-07-19 23:19:30,388 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2020-07-19 23:19:30,388 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:19:30,402 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:19:30,404 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-19 23:19:30,404 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:121, output treesize:25 [2020-07-19 23:19:30,509 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:19:30,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:19:30,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2020-07-19 23:19:30,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638615567] [2020-07-19 23:19:30,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-19 23:19:30,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:19:30,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-19 23:19:30,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2020-07-19 23:19:30,513 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 22 states. [2020-07-19 23:19:31,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:19:31,849 INFO L93 Difference]: Finished difference Result 92 states and 105 transitions. [2020-07-19 23:19:31,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-19 23:19:31,849 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 30 [2020-07-19 23:19:31,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:19:31,850 INFO L225 Difference]: With dead ends: 92 [2020-07-19 23:19:31,850 INFO L226 Difference]: Without dead ends: 86 [2020-07-19 23:19:31,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2020-07-19 23:19:31,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-07-19 23:19:31,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 68. [2020-07-19 23:19:31,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-19 23:19:31,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2020-07-19 23:19:31,858 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 30 [2020-07-19 23:19:31,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:19:31,858 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2020-07-19 23:19:31,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-19 23:19:31,859 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2020-07-19 23:19:31,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-19 23:19:31,860 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:19:31,860 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:19:32,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:19:32,072 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:19:32,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:19:32,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1568321631, now seen corresponding path program 1 times [2020-07-19 23:19:32,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:19:32,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30971229] [2020-07-19 23:19:32,074 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@236d221d [2020-07-19 23:19:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 23:19:32,108 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:19:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 23:19:32,122 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:19:32,150 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-19 23:19:32,150 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 23:19:32,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-19 23:19:32,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:19:32 BoogieIcfgContainer [2020-07-19 23:19:32,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:19:32,189 INFO L168 Benchmark]: Toolchain (without parser) took 25478.53 ms. Allocated memory was 137.9 MB in the beginning and 375.4 MB in the end (delta: 237.5 MB). Free memory was 102.0 MB in the beginning and 317.6 MB in the end (delta: -215.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-07-19 23:19:32,189 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-19 23:19:32,190 INFO L168 Benchmark]: CACSL2BoogieTranslator took 722.45 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 101.5 MB in the beginning and 169.7 MB in the end (delta: -68.2 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-07-19 23:19:32,190 INFO L168 Benchmark]: Boogie Preprocessor took 68.70 ms. Allocated memory is still 202.9 MB. Free memory was 169.7 MB in the beginning and 166.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-07-19 23:19:32,190 INFO L168 Benchmark]: RCFGBuilder took 634.59 ms. Allocated memory is still 202.9 MB. Free memory was 166.7 MB in the beginning and 121.5 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. [2020-07-19 23:19:32,192 INFO L168 Benchmark]: TraceAbstraction took 24046.65 ms. Allocated memory was 202.9 MB in the beginning and 375.4 MB in the end (delta: 172.5 MB). Free memory was 121.5 MB in the beginning and 317.6 MB in the end (delta: -196.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-19 23:19:32,193 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 722.45 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 101.5 MB in the beginning and 169.7 MB in the end (delta: -68.2 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.70 ms. Allocated memory is still 202.9 MB. Free memory was 169.7 MB in the beginning and 166.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 634.59 ms. Allocated memory is still 202.9 MB. Free memory was 166.7 MB in the beginning and 121.5 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24046.65 ms. Allocated memory was 202.9 MB in the beginning and 375.4 MB in the end (delta: 172.5 MB). Free memory was 121.5 MB in the beginning and 317.6 MB in the end (delta: -196.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 546]: 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={-1:0}, malloc(sizeof(struct node))={-1:0}] [L522] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L523] List t; [L524] List p = a; VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L525] COND TRUE __VERIFIER_nondet_int() [L526] p->h = 1 [L527] t = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L528] COND FALSE !(t == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, p={-1:0}, t={-2:0}] [L529] p->n = t [L530] EXPR p->n [L530] p = p->n [L525] COND FALSE !(__VERIFIER_nondet_int()) [L532] COND TRUE __VERIFIER_nondet_int() [L533] p->h = 2 [L534] t = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-3:0}, p={-2:0}, t={-3:0}] [L535] COND FALSE !(t == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-3:0}, p={-2:0}, t={-3:0}] [L536] p->n = t [L537] EXPR p->n [L537] p = p->n [L532] COND FALSE !(__VERIFIER_nondet_int()) [L539] p->h = 3 [L540] p = a VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-3:0}, p={-1:0}, t={-3:0}] [L541] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-3:0}, p={-1:0}, p->h=1, t={-3:0}] [L541] COND FALSE !(p->h == 2) [L543] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-3:0}, p={-1:0}, p->h=1, t={-3:0}] [L543] COND TRUE p->h == 1 [L544] EXPR p->n [L544] p = p->n [L543] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-3:0}, p={-2:0}, p->h=2, t={-3:0}] [L543] COND FALSE !(p->h == 1) [L545] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-3:0}, p={-2:0}, p->h=2, t={-3:0}] [L545] COND TRUE p->h != 3 [L546] __VERIFIER_error() VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-3:0}, p={-2:0}, t={-3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.9s, OverallIterations: 14, TraceHistogramMax: 3, AutomataDifference: 11.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 269 SDtfs, 802 SDslu, 1755 SDs, 0 SdLazy, 2836 SolverSat, 361 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 7.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 446 GetRequests, 216 SyntacticMatches, 6 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 163 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 602 NumberOfCodeBlocks, 545 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 550 ConstructedInterpolants, 28 QuantifiedInterpolants, 173556 SizeOfPredicates, 108 NumberOfNonLiveVariables, 855 ConjunctsInSsa, 318 ConjunctsInUnsatCore, 22 InterpolantComputations, 4 PerfectInterpolantSequences, 20/112 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...