/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:14:50,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:14:50,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:14:50,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 01:14:50,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 01:14:50,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 01:14:50,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 01:14:50,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 01:14:50,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 01:14:50,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 01:14:50,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 01:14:50,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 01:14:50,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:14:50,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:14:50,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:14:50,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:14:50,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:14:50,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:14:50,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:14:50,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:14:50,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:14:50,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:14:50,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:14:50,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:14:50,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 01:14:50,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 01:14:50,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 01:14:50,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 01:14:50,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 01:14:50,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 01:14:50,398 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 01:14:50,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 01:14:50,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 01:14:50,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 01:14:50,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 01:14:50,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 01:14:50,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 01:14:50,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 01:14:50,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:14:50,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:14:50,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:14:50,410 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 01:14:50,437 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:14:50,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:14:50,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:14:50,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:14:50,440 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:14:50,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:14:50,440 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:14:50,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:14:50,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:14:50,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:14:50,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:14:50,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:14:50,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:14:50,443 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:14:50,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:14:50,443 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:14:50,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:14:50,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:14:50,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:14:50,444 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:14:50,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:14:50,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:14:50,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:14:50,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:14:50,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:14:50,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:14:50,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:14:50,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:14:50,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:14:50,446 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 01:14:50,723 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:14:50,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:14:50,740 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:14:50,741 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:14:50,741 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:14:50,742 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-07-21 01:14:50,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/609512058/3db1eaae0e4647acacfd635106233823/FLAGfc8e33918 [2020-07-21 01:14:51,338 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:14:51,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-07-21 01:14:51,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/609512058/3db1eaae0e4647acacfd635106233823/FLAGfc8e33918 [2020-07-21 01:14:51,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/609512058/3db1eaae0e4647acacfd635106233823 [2020-07-21 01:14:51,643 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:14:51,647 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:14:51,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:14:51,648 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:14:51,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:14:51,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:14:51" (1/1) ... [2020-07-21 01:14:51,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75be0e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:51, skipping insertion in model container [2020-07-21 01:14:51,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:14:51" (1/1) ... [2020-07-21 01:14:51,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:14:51,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:14:52,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:14:52,161 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:14:52,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:14:52,280 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:14:52,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:52 WrapperNode [2020-07-21 01:14:52,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:14:52,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:14:52,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:14:52,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:14:52,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:52" (1/1) ... [2020-07-21 01:14:52,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:52" (1/1) ... [2020-07-21 01:14:52,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:52" (1/1) ... [2020-07-21 01:14:52,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:52" (1/1) ... [2020-07-21 01:14:52,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:52" (1/1) ... [2020-07-21 01:14:52,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:52" (1/1) ... [2020-07-21 01:14:52,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:52" (1/1) ... [2020-07-21 01:14:52,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:14:52,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:14:52,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:14:52,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:14:52,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:14:52,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:14:52,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:14:52,410 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:14:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 01:14:52,410 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 01:14:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 01:14:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 01:14:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 01:14:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 01:14:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 01:14:52,411 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 01:14:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 01:14:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 01:14:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 01:14:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 01:14:52,412 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 01:14:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 01:14:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 01:14:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 01:14:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 01:14:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 01:14:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 01:14:52,413 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 01:14:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 01:14:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 01:14:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 01:14:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 01:14:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 01:14:52,414 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 01:14:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 01:14:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 01:14:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 01:14:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 01:14:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 01:14:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 01:14:52,415 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 01:14:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 01:14:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 01:14:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 01:14:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 01:14:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 01:14:52,416 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 01:14:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 01:14:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 01:14:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 01:14:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 01:14:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 01:14:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 01:14:52,417 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 01:14:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 01:14:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 01:14:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 01:14:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 01:14:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 01:14:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 01:14:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 01:14:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 01:14:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 01:14:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 01:14:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 01:14:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 01:14:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-21 01:14:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 01:14:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 01:14:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-21 01:14:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 01:14:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 01:14:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-21 01:14:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 01:14:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 01:14:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 01:14:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 01:14:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 01:14:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 01:14:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 01:14:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 01:14:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 01:14:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 01:14:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 01:14:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 01:14:52,422 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 01:14:52,423 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 01:14:52,423 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 01:14:52,423 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 01:14:52,423 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 01:14:52,423 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 01:14:52,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 01:14:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 01:14:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 01:14:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 01:14:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 01:14:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 01:14:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 01:14:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 01:14:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 01:14:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 01:14:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 01:14:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 01:14:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 01:14:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 01:14:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 01:14:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 01:14:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 01:14:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 01:14:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 01:14:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 01:14:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:14:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:14:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:14:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 01:14:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 01:14:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 01:14:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 01:14:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 01:14:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 01:14:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:14:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:14:53,037 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:14:53,038 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-07-21 01:14:53,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:14:53 BoogieIcfgContainer [2020-07-21 01:14:53,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:14:53,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:14:53,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:14:53,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:14:53,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:14:51" (1/3) ... [2020-07-21 01:14:53,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273361d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:14:53, skipping insertion in model container [2020-07-21 01:14:53,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:14:52" (2/3) ... [2020-07-21 01:14:53,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273361d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:14:53, skipping insertion in model container [2020-07-21 01:14:53,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:14:53" (3/3) ... [2020-07-21 01:14:53,051 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-07-21 01:14:53,062 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:14:53,070 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-07-21 01:14:53,084 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-07-21 01:14:53,109 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:14:53,110 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:14:53,110 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:14:53,110 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:14:53,110 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:14:53,111 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:14:53,111 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:14:53,111 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:14:53,133 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-07-21 01:14:53,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 01:14:53,139 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:14:53,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:14:53,141 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:14:53,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:14:53,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1255802584, now seen corresponding path program 1 times [2020-07-21 01:14:53,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:14:53,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867204004] [2020-07-21 01:14:53,159 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:14:53,377 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:14:53,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:14:53,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 01:14:53,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:14:53,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:14:53,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:14:53,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867204004] [2020-07-21 01:14:53,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:14:53,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 01:14:53,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287776371] [2020-07-21 01:14:53,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 01:14:53,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:14:53,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 01:14:53,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 01:14:53,437 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2020-07-21 01:14:53,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:14:53,467 INFO L93 Difference]: Finished difference Result 98 states and 156 transitions. [2020-07-21 01:14:53,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 01:14:53,469 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-21 01:14:53,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:14:53,480 INFO L225 Difference]: With dead ends: 98 [2020-07-21 01:14:53,480 INFO L226 Difference]: Without dead ends: 45 [2020-07-21 01:14:53,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 01:14:53,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-21 01:14:53,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-07-21 01:14:53,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-21 01:14:53,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-07-21 01:14:53,530 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 10 [2020-07-21 01:14:53,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:14:53,530 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-07-21 01:14:53,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 01:14:53,530 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-07-21 01:14:53,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-21 01:14:53,531 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:14:53,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:14:53,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:14:53,745 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:14:53,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:14:53,745 INFO L82 PathProgramCache]: Analyzing trace with hash -338068956, now seen corresponding path program 1 times [2020-07-21 01:14:53,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:14:53,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469370522] [2020-07-21 01:14:53,746 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:14:53,893 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:14:53,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:14:53,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 01:14:53,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:14:53,956 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2020-07-21 01:14:53,959 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:14:53,967 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:14:53,967 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:14:53,968 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:4 [2020-07-21 01:14:53,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:14:53,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:14:53,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469370522] [2020-07-21 01:14:53,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:14:53,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 01:14:53,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055291191] [2020-07-21 01:14:53,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 01:14:53,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:14:53,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 01:14:53,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 01:14:53,985 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 4 states. [2020-07-21 01:14:54,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:14:54,110 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-07-21 01:14:54,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 01:14:54,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-07-21 01:14:54,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:14:54,112 INFO L225 Difference]: With dead ends: 51 [2020-07-21 01:14:54,113 INFO L226 Difference]: Without dead ends: 49 [2020-07-21 01:14:54,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:14:54,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-21 01:14:54,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-07-21 01:14:54,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-21 01:14:54,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-07-21 01:14:54,121 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 11 [2020-07-21 01:14:54,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:14:54,122 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-07-21 01:14:54,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 01:14:54,122 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-07-21 01:14:54,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 01:14:54,123 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:14:54,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:14:54,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:14:54,338 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:14:54,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:14:54,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1890143313, now seen corresponding path program 1 times [2020-07-21 01:14:54,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:14:54,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498693861] [2020-07-21 01:14:54,340 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:14:54,899 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:14:54,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:14:54,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:14:54,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:14:54,921 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 13 treesize of output 9 [2020-07-21 01:14:54,921 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:14:54,925 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:14:54,925 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:14:54,925 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-21 01:14:54,953 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 19 treesize of output 7 [2020-07-21 01:14:54,954 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:14:54,957 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:14:54,957 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:14:54,958 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 01:14:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:14:54,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:14:54,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498693861] [2020-07-21 01:14:54,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:14:54,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 01:14:54,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052199792] [2020-07-21 01:14:54,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 01:14:54,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:14:54,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 01:14:54,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 01:14:54,966 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 4 states. [2020-07-21 01:14:55,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:14:55,041 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-07-21 01:14:55,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 01:14:55,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-21 01:14:55,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:14:55,043 INFO L225 Difference]: With dead ends: 43 [2020-07-21 01:14:55,044 INFO L226 Difference]: Without dead ends: 41 [2020-07-21 01:14:55,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:14:55,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-21 01:14:55,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-21 01:14:55,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-21 01:14:55,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-07-21 01:14:55,050 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 12 [2020-07-21 01:14:55,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:14:55,051 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-07-21 01:14:55,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 01:14:55,051 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-07-21 01:14:55,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 01:14:55,052 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:14:55,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:14:55,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:14:55,266 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:14:55,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:14:55,267 INFO L82 PathProgramCache]: Analyzing trace with hash 290038970, now seen corresponding path program 1 times [2020-07-21 01:14:55,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:14:55,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360166566] [2020-07-21 01:14:55,269 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:14:55,413 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:14:55,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:14:55,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 01:14:55,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:14:55,425 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 13 treesize of output 9 [2020-07-21 01:14:55,426 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:14:55,431 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:14:55,432 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:14:55,432 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2020-07-21 01:14:55,458 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 01:14:55,459 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:14:55,461 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:14:55,461 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:14:55,462 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-07-21 01:14:55,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:14:55,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:14:55,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360166566] [2020-07-21 01:14:55,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:14:55,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:14:55,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560550356] [2020-07-21 01:14:55,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:14:55,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:14:55,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:14:55,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:14:55,470 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 5 states. [2020-07-21 01:14:55,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:14:55,669 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2020-07-21 01:14:55,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 01:14:55,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-21 01:14:55,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:14:55,672 INFO L225 Difference]: With dead ends: 82 [2020-07-21 01:14:55,672 INFO L226 Difference]: Without dead ends: 80 [2020-07-21 01:14:55,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:14:55,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-07-21 01:14:55,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 59. [2020-07-21 01:14:55,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-21 01:14:55,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2020-07-21 01:14:55,690 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 14 [2020-07-21 01:14:55,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:14:55,691 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2020-07-21 01:14:55,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:14:55,692 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2020-07-21 01:14:55,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 01:14:55,693 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:14:55,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:14:55,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:14:55,907 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:14:55,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:14:55,908 INFO L82 PathProgramCache]: Analyzing trace with hash 2060721718, now seen corresponding path program 1 times [2020-07-21 01:14:55,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:14:55,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502336488] [2020-07-21 01:14:55,910 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:14:56,463 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:14:56,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:14:56,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 01:14:56,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:14:56,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:14:56,629 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-07-21 01:14:56,631 INFO L350 Elim1Store]: treesize reduction 106, result has 48.5 percent of original size [2020-07-21 01:14:56,631 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 2 case distinctions, treesize of input 74 treesize of output 107 [2020-07-21 01:14:56,632 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:14:56,808 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-07-21 01:14:56,809 INFO L624 ElimStorePlain]: treesize reduction 36, result has 80.1 percent of original size [2020-07-21 01:14:56,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:14:56,965 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-07-21 01:14:56,965 INFO L350 Elim1Store]: treesize reduction 115, result has 44.2 percent of original size [2020-07-21 01:14:56,966 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 2 case distinctions, treesize of input 74 treesize of output 98 [2020-07-21 01:14:56,968 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:14:57,128 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-07-21 01:14:57,129 INFO L624 ElimStorePlain]: treesize reduction 36, result has 78.6 percent of original size [2020-07-21 01:14:57,133 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 01:14:57,136 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 01:14:57,138 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 01:14:57,144 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:14:57,146 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 01:14:57,148 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 01:14:57,151 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 01:14:57,159 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:14:57,161 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:14:57,171 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 01:14:57,173 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 01:14:57,177 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 01:14:57,180 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 01:14:57,182 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 01:14:57,183 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 01:14:57,187 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-07-21 01:14:57,191 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 01:14:57,192 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 01:14:57,194 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 01:14:57,198 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 01:14:57,199 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:14:57,202 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:14:57,205 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:14:57,208 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 01:14:57,212 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 01:14:57,214 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 01:14:57,215 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 01:14:57,219 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:14:57,220 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:14:57,222 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:14:57,222 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:149, output treesize:15 [2020-07-21 01:14:57,239 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 01:14:57,240 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:14:57,245 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:14:57,248 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 01:14:57,248 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:14:57,252 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:14:57,252 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:14:57,253 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2020-07-21 01:14:57,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:14:57,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:14:57,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502336488] [2020-07-21 01:14:57,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:14:57,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 01:14:57,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252675083] [2020-07-21 01:14:57,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 01:14:57,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:14:57,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 01:14:57,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 01:14:57,263 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 4 states. [2020-07-21 01:14:57,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:14:57,376 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-07-21 01:14:57,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 01:14:57,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-07-21 01:14:57,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:14:57,378 INFO L225 Difference]: With dead ends: 59 [2020-07-21 01:14:57,378 INFO L226 Difference]: Without dead ends: 57 [2020-07-21 01:14:57,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:14:57,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-21 01:14:57,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-07-21 01:14:57,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-21 01:14:57,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-07-21 01:14:57,390 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 15 [2020-07-21 01:14:57,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:14:57,391 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-07-21 01:14:57,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 01:14:57,391 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-07-21 01:14:57,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 01:14:57,394 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:14:57,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:14:57,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:14:57,608 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:14:57,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:14:57,609 INFO L82 PathProgramCache]: Analyzing trace with hash 373775322, now seen corresponding path program 1 times [2020-07-21 01:14:57,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:14:57,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244998578] [2020-07-21 01:14:57,610 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:14:58,187 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:14:58,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:14:58,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-21 01:14:58,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:14:58,208 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 01:14:58,208 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 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-21 01:14:58,209 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:14:58,212 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:14:58,212 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:14:58,212 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:9, output treesize:11 [2020-07-21 01:14:58,296 INFO L350 Elim1Store]: treesize reduction 8, result has 87.3 percent of original size [2020-07-21 01:14:58,297 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 69 [2020-07-21 01:14:58,299 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:14:58,339 INFO L624 ElimStorePlain]: treesize reduction 28, result has 67.1 percent of original size [2020-07-21 01:14:58,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:14:58,347 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:14:58,356 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:14:58,358 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:14:58,359 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:55, output treesize:24 [2020-07-21 01:14:58,423 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:14:58,423 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 [2020-07-21 01:14:58,425 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:14:58,437 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:14:58,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:14:58,441 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:14:58,447 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:14:58,448 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:14:58,448 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:51, output treesize:4 [2020-07-21 01:14:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:14:58,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:14:58,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244998578] [2020-07-21 01:14:58,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:14:58,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:14:58,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753710776] [2020-07-21 01:14:58,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:14:58,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:14:58,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:14:58,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:14:58,458 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 5 states. [2020-07-21 01:14:58,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:14:58,531 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-07-21 01:14:58,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:14:58,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-21 01:14:58,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:14:58,536 INFO L225 Difference]: With dead ends: 57 [2020-07-21 01:14:58,536 INFO L226 Difference]: Without dead ends: 55 [2020-07-21 01:14:58,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:14:58,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-21 01:14:58,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-07-21 01:14:58,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-21 01:14:58,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-07-21 01:14:58,543 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 17 [2020-07-21 01:14:58,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:14:58,543 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-07-21 01:14:58,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:14:58,543 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-07-21 01:14:58,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 01:14:58,544 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:14:58,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:14:58,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:14:58,755 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:14:58,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:14:58,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1568846049, now seen corresponding path program 1 times [2020-07-21 01:14:58,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:14:58,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006183065] [2020-07-21 01:14:58,757 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:14:58,892 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:14:58,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:14:58,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:14:58,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:14:58,923 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 19 treesize of output 7 [2020-07-21 01:14:58,923 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:14:58,926 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:14:58,926 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:14:58,926 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 01:14:58,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:14:58,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:14:58,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006183065] [2020-07-21 01:14:58,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:14:58,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:14:58,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067521798] [2020-07-21 01:14:58,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:14:58,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:14:58,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:14:58,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:14:58,934 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 5 states. [2020-07-21 01:14:59,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:14:59,040 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2020-07-21 01:14:59,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 01:14:59,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-21 01:14:59,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:14:59,044 INFO L225 Difference]: With dead ends: 70 [2020-07-21 01:14:59,044 INFO L226 Difference]: Without dead ends: 58 [2020-07-21 01:14:59,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:14:59,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-21 01:14:59,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-07-21 01:14:59,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-21 01:14:59,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-07-21 01:14:59,055 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 18 [2020-07-21 01:14:59,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:14:59,055 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-07-21 01:14:59,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:14:59,055 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-07-21 01:14:59,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 01:14:59,059 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:14:59,060 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] [2020-07-21 01:14:59,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:14:59,271 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:14:59,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:14:59,272 INFO L82 PathProgramCache]: Analyzing trace with hash 777661568, now seen corresponding path program 1 times [2020-07-21 01:14:59,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:14:59,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47874065] [2020-07-21 01:14:59,273 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:14:59,397 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:14:59,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:14:59,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 01:14:59,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:14:59,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:14:59,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:14:59,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:14:59,411 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2020-07-21 01:14:59,412 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:14:59,424 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:14:59,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:14:59,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:14:59,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:14:59,435 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2020-07-21 01:14:59,436 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:14:59,446 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:14:59,447 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:14:59,447 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:61, output treesize:39 [2020-07-21 01:14:59,490 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 [2020-07-21 01:14:59,491 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:14:59,499 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:14:59,504 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:14:59,505 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 1 case distinctions, treesize of input 22 treesize of output 10 [2020-07-21 01:14:59,505 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:14:59,514 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:14:59,514 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:14:59,514 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:46, output treesize:10 [2020-07-21 01:14:59,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:14:59,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:14:59,575 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:14:59,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:14:59,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47874065] [2020-07-21 01:14:59,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:14:59,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 01:14:59,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300100125] [2020-07-21 01:14:59,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 01:14:59,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:14:59,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 01:14:59,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:14:59,593 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 8 states. [2020-07-21 01:14:59,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:14:59,893 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2020-07-21 01:14:59,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 01:14:59,893 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-07-21 01:14:59,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:14:59,894 INFO L225 Difference]: With dead ends: 79 [2020-07-21 01:14:59,895 INFO L226 Difference]: Without dead ends: 57 [2020-07-21 01:14:59,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-07-21 01:14:59,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-21 01:14:59,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-07-21 01:14:59,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-21 01:14:59,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2020-07-21 01:14:59,908 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 21 [2020-07-21 01:14:59,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:14:59,908 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2020-07-21 01:14:59,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 01:14:59,908 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2020-07-21 01:14:59,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 01:14:59,913 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:14:59,913 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, 1] [2020-07-21 01:15:00,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:00,126 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:15:00,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:15:00,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1056872398, now seen corresponding path program 1 times [2020-07-21 01:15:00,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:15:00,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57481185] [2020-07-21 01:15:00,128 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:00,820 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:15:00,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:15:00,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 38 conjunts are in the unsatisfiable core [2020-07-21 01:15:00,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:15:00,840 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 01:15:00,841 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 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-21 01:15:00,841 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:00,853 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:00,862 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 13 treesize of output 9 [2020-07-21 01:15:00,863 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:00,874 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:00,875 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:00,876 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:29 [2020-07-21 01:15:00,961 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:00,961 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 [2020-07-21 01:15:00,964 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:01,040 INFO L624 ElimStorePlain]: treesize reduction 14, result has 88.9 percent of original size [2020-07-21 01:15:01,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:01,047 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:01,076 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:01,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:01,093 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 25 treesize of output 13 [2020-07-21 01:15:01,093 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:01,112 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:01,118 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:01,136 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:01,160 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:01,161 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 45 treesize of output 48 [2020-07-21 01:15:01,162 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:01,207 INFO L624 ElimStorePlain]: treesize reduction 20, result has 70.6 percent of original size [2020-07-21 01:15:01,210 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:15:01,210 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:114, output treesize:27 [2020-07-21 01:15:01,333 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:01,334 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 [2020-07-21 01:15:01,335 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:01,408 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:01,410 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_34|, |v_#memory_int_44|, |v_#memory_int_42|, |v_#memory_int_43|], 4=[|v_#memory_int_46|]} [2020-07-21 01:15:01,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:01,414 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:01,452 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:01,455 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:01,491 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:01,495 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:01,535 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:01,537 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:01,563 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:01,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:01,623 INFO L350 Elim1Store]: treesize reduction 65, result has 46.7 percent of original size [2020-07-21 01:15:01,624 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 85 [2020-07-21 01:15:01,625 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:01,692 INFO L624 ElimStorePlain]: treesize reduction 18, result has 81.4 percent of original size [2020-07-21 01:15:01,698 INFO L544 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 5 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:01,698 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 11 variables, input treesize:249, output treesize:43 [2020-07-21 01:15:01,822 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 33 treesize of output 13 [2020-07-21 01:15:01,823 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:01,828 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:01,829 INFO L544 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:15:01,829 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:45, output treesize:3 [2020-07-21 01:15:01,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:15:01,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:15:01,881 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_34|, |v_#memory_int_44|, |v_#memory_int_43|], 3=[|v_#memory_int_42|]} [2020-07-21 01:15:01,889 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:02,109 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-07-21 01:15:02,110 INFO L624 ElimStorePlain]: treesize reduction 78, result has 51.6 percent of original size [2020-07-21 01:15:02,112 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:02,130 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:02,132 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:02,150 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:02,157 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:02,167 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:02,168 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-2 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:02,169 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:233, output treesize:60 [2020-07-21 01:15:02,234 INFO L440 ElimStorePlain]: Different costs {2=[|#memory_$Pointer$.base|, |v_#memory_int_40|, |v_#memory_int_41|], 7=[|v_#memory_int_48|]} [2020-07-21 01:15:02,240 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:02,648 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 68 [2020-07-21 01:15:02,648 INFO L624 ElimStorePlain]: treesize reduction 112, result has 51.9 percent of original size [2020-07-21 01:15:02,653 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:02,699 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:02,706 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:02,744 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:02,754 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:02,781 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:02,784 INFO L544 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 4 dim-2 vars, End of recursive call: 12 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:02,784 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 13 variables, input treesize:331, output treesize:117 [2020-07-21 01:15:04,941 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:04,942 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 28 treesize of output 32 [2020-07-21 01:15:04,943 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:04,945 INFO L624 ElimStorePlain]: treesize reduction 129, result has 0.8 percent of original size [2020-07-21 01:15:04,948 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_39| vanished before elimination [2020-07-21 01:15:04,949 INFO L544 ElimStorePlain]: Start of recursive call 1: 15 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:15:04,949 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 17 variables, input treesize:142, output treesize:1 [2020-07-21 01:15:04,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:15:04,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57481185] [2020-07-21 01:15:04,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:15:04,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-21 01:15:04,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662441781] [2020-07-21 01:15:04,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 01:15:04,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:15:04,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 01:15:04,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2020-07-21 01:15:04,965 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 11 states. [2020-07-21 01:15:13,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:15:13,620 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2020-07-21 01:15:13,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:15:13,621 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-07-21 01:15:13,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:15:13,621 INFO L225 Difference]: With dead ends: 89 [2020-07-21 01:15:13,622 INFO L226 Difference]: Without dead ends: 87 [2020-07-21 01:15:13,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=78, Invalid=193, Unknown=1, NotChecked=0, Total=272 [2020-07-21 01:15:13,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-07-21 01:15:13,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 39. [2020-07-21 01:15:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-21 01:15:13,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-07-21 01:15:13,631 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 25 [2020-07-21 01:15:13,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:15:13,631 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-07-21 01:15:13,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 01:15:13,631 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-07-21 01:15:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-21 01:15:13,632 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:15:13,632 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, 1, 1, 1, 1] [2020-07-21 01:15:13,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:13,835 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:15:13,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:15:13,836 INFO L82 PathProgramCache]: Analyzing trace with hash -377613816, now seen corresponding path program 1 times [2020-07-21 01:15:13,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:15:13,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875156487] [2020-07-21 01:15:13,837 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:15:14,269 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:15:14,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:15:14,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 51 conjunts are in the unsatisfiable core [2020-07-21 01:15:14,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:15:14,300 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 01:15:14,300 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 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-21 01:15:14,300 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:14,309 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:14,310 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:14,310 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:23 [2020-07-21 01:15:14,378 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:14,379 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 [2020-07-21 01:15:14,380 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:15:14,381 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:14,483 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-07-21 01:15:14,483 INFO L624 ElimStorePlain]: treesize reduction 14, result has 93.5 percent of original size [2020-07-21 01:15:14,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:14,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:14,496 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 01:15:14,509 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:14,510 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 1 case distinctions, treesize of input 63 treesize of output 41 [2020-07-21 01:15:14,511 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:14,576 INFO L624 ElimStorePlain]: treesize reduction 16, result has 89.4 percent of original size [2020-07-21 01:15:14,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:14,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:14,601 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:14,602 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 41 [2020-07-21 01:15:14,602 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:14,656 INFO L624 ElimStorePlain]: treesize reduction 16, result has 81.2 percent of original size [2020-07-21 01:15:14,657 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:15:14,658 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:203, output treesize:82 [2020-07-21 01:15:14,745 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:14,745 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 20 treesize of output 30 [2020-07-21 01:15:14,746 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:15:14,746 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:15:14,747 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:14,961 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-07-21 01:15:14,961 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:14,964 INFO L440 ElimStorePlain]: Different costs {6=[|v_#memory_$Pointer$.offset_37|, |v_#memory_$Pointer$.base_41|], 11=[|v_#memory_$Pointer$.base_39|, |v_#memory_$Pointer$.offset_35|]} [2020-07-21 01:15:14,998 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 39 [2020-07-21 01:15:14,999 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:15,167 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-07-21 01:15:15,168 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:15,184 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:15,185 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 406 treesize of output 274 [2020-07-21 01:15:15,187 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:15,593 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-07-21 01:15:15,594 INFO L624 ElimStorePlain]: treesize reduction 16, result has 96.1 percent of original size [2020-07-21 01:15:15,812 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2020-07-21 01:15:15,813 INFO L350 Elim1Store]: treesize reduction 250, result has 36.9 percent of original size [2020-07-21 01:15:15,813 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 327 treesize of output 281 [2020-07-21 01:15:15,815 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 12 disjuncts [2020-07-21 01:15:15,816 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-07-21 01:15:15,816 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 10 disjuncts [2020-07-21 01:15:15,817 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 9 disjuncts [2020-07-21 01:15:15,818 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-07-21 01:15:15,819 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-07-21 01:15:15,820 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 9 disjuncts [2020-07-21 01:15:15,821 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-07-21 01:15:15,822 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-07-21 01:15:15,825 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-07-21 01:15:15,826 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 11 disjuncts [2020-07-21 01:15:15,827 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 10 disjuncts [2020-07-21 01:15:15,827 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 9 disjuncts [2020-07-21 01:15:15,828 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-07-21 01:15:15,829 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-07-21 01:15:15,831 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 9 disjuncts [2020-07-21 01:15:15,831 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-07-21 01:15:15,832 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-07-21 01:15:15,835 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:16,160 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-07-21 01:15:16,160 INFO L624 ElimStorePlain]: treesize reduction 118, result has 59.2 percent of original size [2020-07-21 01:15:16,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:16,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:16,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:16,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:16,215 INFO L350 Elim1Store]: treesize reduction 5, result has 90.7 percent of original size [2020-07-21 01:15:16,215 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 89 [2020-07-21 01:15:16,217 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:16,295 INFO L624 ElimStorePlain]: treesize reduction 41, result has 68.0 percent of original size [2020-07-21 01:15:16,296 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:15:16,297 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 6 variables, input treesize:457, output treesize:121 [2020-07-21 01:15:16,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:16,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:16,440 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 19 [2020-07-21 01:15:16,440 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:16,454 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:16,455 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:16,455 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:143, output treesize:80 [2020-07-21 01:15:16,508 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:16,508 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 81 treesize of output 59 [2020-07-21 01:15:16,510 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:15:16,511 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:15:16,511 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:15:16,512 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:15:16,513 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:15:16,513 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:15:16,514 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:15:16,514 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:15:16,526 INFO L624 ElimStorePlain]: treesize reduction 60, result has 13.0 percent of original size [2020-07-21 01:15:16,526 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:15:16,527 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:81, output treesize:4 [2020-07-21 01:15:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:15:16,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:15:16,647 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:15:16,650 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:15:16,653 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:15:16,664 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_38|], 6=[|v_#memory_$Pointer$.base_42|], 20=[|v_#memory_$Pointer$.base_39|, |v_#memory_$Pointer$.offset_35|]} [2020-07-21 01:15:16,676 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:16,689 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:16,981 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-07-21 01:15:16,981 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:16,991 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:16,999 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:17,235 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-07-21 01:15:17,236 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:17,248 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:17,256 INFO L544 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:17,742 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-07-21 01:15:17,743 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:17,765 INFO L544 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:17,777 INFO L544 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 01:15:18,581 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-07-21 01:15:18,581 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:15:18,584 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: 10 dim-0 vars, and 2 xjuncts. [2020-07-21 01:15:18,584 INFO L244 ElimStorePlain]: Needed 9 recursive calls to eliminate 5 variables, input treesize:1145, output treesize:1527 [2020-07-21 01:15:19,806 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-07-21 01:15:19,814 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:15:19,832 INFO L440 ElimStorePlain]: Different costs {36=[|#memory_$Pointer$.offset|], 66=[|#memory_$Pointer$.base|]} [2020-07-21 01:15:19,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 01:15:19,898 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 01:15:19,899 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 01:15:23,057 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 43711996984108 treesize of output 43711728548652