/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 22:44:38,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:44:38,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:44:38,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:44:38,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:44:38,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:44:38,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:44:38,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:44:38,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:44:38,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:44:38,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:44:38,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:44:38,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:44:38,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:44:38,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:44:38,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:44:38,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:44:38,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:44:38,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:44:38,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:44:38,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:44:38,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:44:38,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:44:38,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:44:38,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 22:44:38,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 22:44:38,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 22:44:38,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 22:44:38,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 22:44:38,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 22:44:38,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 22:44:38,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 22:44:38,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 22:44:38,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 22:44:38,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 22:44:38,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 22:44:38,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 22:44:38,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 22:44:38,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:44:38,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:44:38,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:44:38,627 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 22:44:38,642 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:44:38,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:44:38,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:44:38,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:44:38,644 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:44:38,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:44:38,644 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:44:38,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:44:38,645 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:44:38,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:44:38,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:44:38,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:44:38,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:44:38,646 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:44:38,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:44:38,646 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:44:38,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:44:38,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:44:38,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:44:38,647 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:44:38,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:44:38,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:44:38,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:44:38,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:44:38,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:44:38,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:44:38,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:44:38,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:44:38,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:44:38,649 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 22:44:38,979 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:44:38,994 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:44:38,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:44:39,001 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:44:39,004 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:44:39,005 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-07-21 22:44:39,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94ab71144/d3c6bb9d304c458eb3a822f80cdec0f8/FLAGad62309c2 [2020-07-21 22:44:39,650 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:44:39,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-07-21 22:44:39,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94ab71144/d3c6bb9d304c458eb3a822f80cdec0f8/FLAGad62309c2 [2020-07-21 22:44:39,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94ab71144/d3c6bb9d304c458eb3a822f80cdec0f8 [2020-07-21 22:44:39,919 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:44:39,922 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:44:39,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:44:39,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:44:39,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:44:39,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:44:39" (1/1) ... [2020-07-21 22:44:39,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44bf7ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:44:39, skipping insertion in model container [2020-07-21 22:44:39,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:44:39" (1/1) ... [2020-07-21 22:44:39,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:44:39,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:44:40,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:44:40,450 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:44:40,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:44:40,585 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:44:40,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:44:40 WrapperNode [2020-07-21 22:44:40,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:44:40,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:44:40,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:44:40,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:44:40,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:44:40" (1/1) ... [2020-07-21 22:44:40,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:44:40" (1/1) ... [2020-07-21 22:44:40,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:44:40" (1/1) ... [2020-07-21 22:44:40,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:44:40" (1/1) ... [2020-07-21 22:44:40,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:44:40" (1/1) ... [2020-07-21 22:44:40,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:44:40" (1/1) ... [2020-07-21 22:44:40,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:44:40" (1/1) ... [2020-07-21 22:44:40,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:44:40,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:44:40,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:44:40,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:44:40,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:44:40" (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 22:44:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:44:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:44:40,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:44:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 22:44:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 22:44:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 22:44:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 22:44:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 22:44:40,725 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 22:44:40,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 22:44:40,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 22:44:40,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 22:44:40,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 22:44:40,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 22:44:40,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 22:44:40,727 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 22:44:40,727 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 22:44:40,727 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 22:44:40,727 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 22:44:40,727 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 22:44:40,727 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 22:44:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 22:44:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 22:44:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 22:44:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 22:44:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 22:44:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 22:44:40,728 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 22:44:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 22:44:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 22:44:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 22:44:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 22:44:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 22:44:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 22:44:40,729 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 22:44:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 22:44:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 22:44:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 22:44:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 22:44:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 22:44:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 22:44:40,730 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 22:44:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 22:44:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 22:44:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 22:44:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 22:44:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 22:44:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 22:44:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 22:44:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 22:44:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 22:44:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 22:44:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 22:44:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 22:44:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 22:44:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 22:44:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 22:44:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 22:44:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 22:44:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 22:44:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 22:44:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-21 22:44:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 22:44:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 22:44:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-21 22:44:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 22:44:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 22:44:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-21 22:44:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 22:44:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 22:44:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 22:44:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 22:44:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 22:44:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 22:44:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 22:44:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 22:44:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 22:44:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 22:44:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 22:44:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 22:44:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 22:44:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 22:44:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 22:44:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 22:44:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 22:44:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 22:44:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 22:44:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 22:44:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 22:44:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 22:44:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 22:44:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 22:44:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 22:44:40,738 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 22:44:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 22:44:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 22:44:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 22:44:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 22:44:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 22:44:40,739 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 22:44:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 22:44:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 22:44:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 22:44:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 22:44:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 22:44:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 22:44:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 22:44:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:44:40,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:44:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 22:44:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 22:44:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 22:44:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 22:44:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 22:44:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 22:44:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:44:40,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:44:41,353 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:44:41,353 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-07-21 22:44:41,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:44:41 BoogieIcfgContainer [2020-07-21 22:44:41,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:44:41,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:44:41,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:44:41,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:44:41,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:44:39" (1/3) ... [2020-07-21 22:44:41,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d409a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:44:41, skipping insertion in model container [2020-07-21 22:44:41,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:44:40" (2/3) ... [2020-07-21 22:44:41,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d409a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:44:41, skipping insertion in model container [2020-07-21 22:44:41,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:44:41" (3/3) ... [2020-07-21 22:44:41,367 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-07-21 22:44:41,378 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:44:41,386 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-07-21 22:44:41,401 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-07-21 22:44:41,432 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:44:41,432 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:44:41,433 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:44:41,433 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:44:41,434 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:44:41,434 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:44:41,434 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:44:41,434 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:44:41,466 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-07-21 22:44:41,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 22:44:41,481 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:44:41,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:44:41,486 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 22:44:41,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:44:41,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1255802584, now seen corresponding path program 1 times [2020-07-21 22:44:41,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:44:41,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077786742] [2020-07-21 22:44:41,505 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 22:44:41,763 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:44:41,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:44:41,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 22:44:41,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:44:41,797 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 22:44:41,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:44:41,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077786742] [2020-07-21 22:44:41,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:44:41,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 22:44:41,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640896802] [2020-07-21 22:44:41,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 22:44:41,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:44:41,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 22:44:41,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 22:44:41,824 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2020-07-21 22:44:41,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:44:41,868 INFO L93 Difference]: Finished difference Result 98 states and 156 transitions. [2020-07-21 22:44:41,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 22:44:41,870 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-21 22:44:41,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:44:41,883 INFO L225 Difference]: With dead ends: 98 [2020-07-21 22:44:41,883 INFO L226 Difference]: Without dead ends: 45 [2020-07-21 22:44:41,891 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 22:44:41,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-21 22:44:41,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-07-21 22:44:41,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-21 22:44:41,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-07-21 22:44:41,950 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 10 [2020-07-21 22:44:41,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:44:41,950 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-07-21 22:44:41,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 22:44:41,950 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-07-21 22:44:41,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-21 22:44:41,952 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:44:41,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:44:42,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:44:42,157 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 22:44:42,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:44:42,158 INFO L82 PathProgramCache]: Analyzing trace with hash -338068956, now seen corresponding path program 1 times [2020-07-21 22:44:42,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:44:42,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373316535] [2020-07-21 22:44:42,160 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 22:44:42,313 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:44:42,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:44:42,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 22:44:42,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:44:42,377 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 22:44:42,380 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:42,388 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:42,389 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 22:44:42,389 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:4 [2020-07-21 22:44:42,412 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 22:44:42,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:44:42,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373316535] [2020-07-21 22:44:42,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:44:42,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 22:44:42,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720035048] [2020-07-21 22:44:42,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 22:44:42,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:44:42,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 22:44:42,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 22:44:42,417 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 4 states. [2020-07-21 22:44:42,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:44:42,560 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-07-21 22:44:42,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 22:44:42,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-07-21 22:44:42,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:44:42,562 INFO L225 Difference]: With dead ends: 51 [2020-07-21 22:44:42,562 INFO L226 Difference]: Without dead ends: 49 [2020-07-21 22:44:42,564 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 22:44:42,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-21 22:44:42,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-07-21 22:44:42,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-21 22:44:42,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-07-21 22:44:42,572 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 11 [2020-07-21 22:44:42,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:44:42,572 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-07-21 22:44:42,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 22:44:42,572 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-07-21 22:44:42,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 22:44:42,573 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:44:42,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:44:42,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:44:42,788 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 22:44:42,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:44:42,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1890143313, now seen corresponding path program 1 times [2020-07-21 22:44:42,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:44:42,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109974827] [2020-07-21 22:44:42,789 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 22:44:43,441 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:44:43,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:44:43,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:44:43,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:44:43,461 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 22:44:43,462 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:43,466 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:43,467 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 22:44:43,467 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-21 22:44:43,492 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 22:44:43,493 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:43,496 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:43,497 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 22:44:43,497 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 22:44:43,506 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 22:44:43,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:44:43,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109974827] [2020-07-21 22:44:43,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:44:43,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 22:44:43,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943286057] [2020-07-21 22:44:43,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 22:44:43,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:44:43,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 22:44:43,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 22:44:43,514 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 4 states. [2020-07-21 22:44:43,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:44:43,601 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-07-21 22:44:43,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 22:44:43,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-21 22:44:43,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:44:43,603 INFO L225 Difference]: With dead ends: 43 [2020-07-21 22:44:43,603 INFO L226 Difference]: Without dead ends: 41 [2020-07-21 22:44:43,604 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 22:44:43,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-21 22:44:43,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-21 22:44:43,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-21 22:44:43,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-07-21 22:44:43,611 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 12 [2020-07-21 22:44:43,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:44:43,611 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-07-21 22:44:43,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 22:44:43,612 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-07-21 22:44:43,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 22:44:43,613 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:44:43,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:44:43,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:44:43,827 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 22:44:43,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:44:43,828 INFO L82 PathProgramCache]: Analyzing trace with hash 290038970, now seen corresponding path program 1 times [2020-07-21 22:44:43,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:44:43,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253445450] [2020-07-21 22:44:43,828 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 22:44:43,976 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:44:43,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:44:43,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 22:44:43,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:44:43,992 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 22:44:43,992 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:43,997 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:43,998 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 22:44:43,998 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2020-07-21 22:44:44,020 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 22:44:44,021 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:44,023 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:44,024 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 22:44:44,024 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-07-21 22:44:44,030 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 22:44:44,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:44:44,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253445450] [2020-07-21 22:44:44,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:44:44,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 22:44:44,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922711622] [2020-07-21 22:44:44,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:44:44,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:44:44,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:44:44,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:44:44,033 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 5 states. [2020-07-21 22:44:44,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:44:44,260 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2020-07-21 22:44:44,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 22:44:44,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-21 22:44:44,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:44:44,262 INFO L225 Difference]: With dead ends: 82 [2020-07-21 22:44:44,263 INFO L226 Difference]: Without dead ends: 80 [2020-07-21 22:44:44,263 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 22:44:44,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-07-21 22:44:44,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 59. [2020-07-21 22:44:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-21 22:44:44,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2020-07-21 22:44:44,283 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 14 [2020-07-21 22:44:44,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:44:44,283 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2020-07-21 22:44:44,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:44:44,284 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2020-07-21 22:44:44,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 22:44:44,285 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:44:44,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 22:44:44,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:44:44,501 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 22:44:44,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:44:44,502 INFO L82 PathProgramCache]: Analyzing trace with hash 2060721718, now seen corresponding path program 1 times [2020-07-21 22:44:44,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:44:44,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817803675] [2020-07-21 22:44:44,503 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 22:44:44,896 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:44:44,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:44:44,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 22:44:44,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:44:44,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:44:45,074 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-07-21 22:44:45,075 INFO L350 Elim1Store]: treesize reduction 106, result has 48.5 percent of original size [2020-07-21 22:44:45,076 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 22:44:45,077 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:45,235 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-07-21 22:44:45,236 INFO L624 ElimStorePlain]: treesize reduction 36, result has 80.1 percent of original size [2020-07-21 22:44:45,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:44:45,396 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-07-21 22:44:45,397 INFO L350 Elim1Store]: treesize reduction 115, result has 44.2 percent of original size [2020-07-21 22:44:45,398 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 22:44:45,399 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:45,575 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-07-21 22:44:45,576 INFO L624 ElimStorePlain]: treesize reduction 36, result has 78.6 percent of original size [2020-07-21 22:44:45,587 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 22:44:45,590 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 22:44:45,593 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 22:44:45,598 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:44:45,600 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 22:44:45,603 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 22:44:45,605 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 22:44:45,610 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:44:45,612 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:44:45,615 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 22:44:45,618 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 22:44:45,620 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 22:44:45,625 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 22:44:45,627 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 22:44:45,629 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 22:44:45,633 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-07-21 22:44:45,637 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 22:44:45,638 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 22:44:45,641 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 22:44:45,645 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 22:44:45,647 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:44:45,650 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:44:45,653 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:44:45,656 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 22:44:45,660 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 22:44:45,663 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 22:44:45,665 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 22:44:45,668 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:44:45,670 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 22:44:45,672 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 22:44:45,672 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:149, output treesize:15 [2020-07-21 22:44:45,686 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 22:44:45,687 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:45,694 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:45,697 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 22:44:45,698 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:45,701 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:45,702 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 22:44:45,702 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2020-07-21 22:44:45,711 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 22:44:45,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:44:45,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817803675] [2020-07-21 22:44:45,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:44:45,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 22:44:45,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510630162] [2020-07-21 22:44:45,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 22:44:45,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:44:45,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 22:44:45,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 22:44:45,714 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 4 states. [2020-07-21 22:44:45,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:44:45,817 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-07-21 22:44:45,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 22:44:45,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-07-21 22:44:45,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:44:45,818 INFO L225 Difference]: With dead ends: 59 [2020-07-21 22:44:45,819 INFO L226 Difference]: Without dead ends: 57 [2020-07-21 22:44:45,819 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 22:44:45,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-21 22:44:45,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-07-21 22:44:45,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-21 22:44:45,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-07-21 22:44:45,826 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 15 [2020-07-21 22:44:45,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:44:45,827 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-07-21 22:44:45,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 22:44:45,827 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-07-21 22:44:45,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 22:44:45,828 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:44:45,828 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 22:44:46,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:44:46,036 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 22:44:46,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:44:46,037 INFO L82 PathProgramCache]: Analyzing trace with hash 373775322, now seen corresponding path program 1 times [2020-07-21 22:44:46,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:44:46,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652742893] [2020-07-21 22:44:46,038 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 22:44:46,666 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:44:46,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:44:46,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-21 22:44:46,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:44:46,684 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 22:44:46,685 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 22:44:46,685 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:46,689 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:46,689 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 22:44:46,689 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:9, output treesize:11 [2020-07-21 22:44:46,798 INFO L350 Elim1Store]: treesize reduction 8, result has 87.3 percent of original size [2020-07-21 22:44:46,799 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 22:44:46,800 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:46,847 INFO L624 ElimStorePlain]: treesize reduction 28, result has 67.1 percent of original size [2020-07-21 22:44:46,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:44:46,852 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:46,863 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:46,865 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 22:44:46,866 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:55, output treesize:24 [2020-07-21 22:44:46,921 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:46,922 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 22:44:46,923 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:46,932 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:46,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:44:46,935 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:46,941 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:46,942 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 22:44:46,942 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:51, output treesize:4 [2020-07-21 22:44:46,949 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 22:44:46,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:44:46,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652742893] [2020-07-21 22:44:46,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:44:46,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 22:44:46,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308275945] [2020-07-21 22:44:46,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:44:46,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:44:46,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:44:46,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:44:46,951 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 5 states. [2020-07-21 22:44:47,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:44:47,026 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-07-21 22:44:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 22:44:47,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-21 22:44:47,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:44:47,030 INFO L225 Difference]: With dead ends: 57 [2020-07-21 22:44:47,031 INFO L226 Difference]: Without dead ends: 55 [2020-07-21 22:44:47,031 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 22:44:47,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-21 22:44:47,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-07-21 22:44:47,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-21 22:44:47,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-07-21 22:44:47,038 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 17 [2020-07-21 22:44:47,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:44:47,038 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-07-21 22:44:47,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:44:47,038 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-07-21 22:44:47,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 22:44:47,039 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:44:47,039 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 22:44:47,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:44:47,253 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 22:44:47,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:44:47,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1568846049, now seen corresponding path program 1 times [2020-07-21 22:44:47,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:44:47,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333053334] [2020-07-21 22:44:47,254 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 22:44:47,403 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:44:47,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:44:47,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 22:44:47,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:44:47,422 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 22:44:47,423 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:47,425 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:47,425 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 22:44:47,425 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 22:44:47,432 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 22:44:47,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:44:47,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333053334] [2020-07-21 22:44:47,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:44:47,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 22:44:47,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960479804] [2020-07-21 22:44:47,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 22:44:47,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:44:47,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 22:44:47,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 22:44:47,435 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 5 states. [2020-07-21 22:44:47,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:44:47,561 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2020-07-21 22:44:47,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 22:44:47,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-21 22:44:47,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:44:47,563 INFO L225 Difference]: With dead ends: 70 [2020-07-21 22:44:47,563 INFO L226 Difference]: Without dead ends: 58 [2020-07-21 22:44:47,564 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 22:44:47,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-21 22:44:47,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-07-21 22:44:47,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-21 22:44:47,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-07-21 22:44:47,579 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 18 [2020-07-21 22:44:47,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:44:47,579 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-07-21 22:44:47,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 22:44:47,580 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-07-21 22:44:47,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 22:44:47,581 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:44:47,581 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 22:44:47,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:44:47,795 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 22:44:47,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:44:47,796 INFO L82 PathProgramCache]: Analyzing trace with hash 777661568, now seen corresponding path program 1 times [2020-07-21 22:44:47,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:44:47,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387474255] [2020-07-21 22:44:47,797 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 22:44:47,917 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 22:44:47,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:44:47,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 22:44:47,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:44:47,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:44:47,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:44:47,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:44:47,943 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 22:44:47,943 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:47,955 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:47,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:44:47,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:44:47,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:44:47,969 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 22:44:47,969 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:47,980 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:47,981 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 22:44:47,982 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:61, output treesize:39 [2020-07-21 22:44:48,024 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 22:44:48,025 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:48,035 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:48,039 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:48,039 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 22:44:48,040 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:48,044 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:48,044 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 22:44:48,045 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:46, output treesize:10 [2020-07-21 22:44:48,059 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 22:44:48,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:44:48,103 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:44:48,114 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 22:44:48,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387474255] [2020-07-21 22:44:48,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:44:48,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 22:44:48,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257684786] [2020-07-21 22:44:48,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 22:44:48,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:44:48,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 22:44:48,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-21 22:44:48,116 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 8 states. [2020-07-21 22:44:48,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:44:48,472 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2020-07-21 22:44:48,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 22:44:48,473 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-07-21 22:44:48,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:44:48,474 INFO L225 Difference]: With dead ends: 79 [2020-07-21 22:44:48,474 INFO L226 Difference]: Without dead ends: 57 [2020-07-21 22:44:48,475 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 22:44:48,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-21 22:44:48,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-07-21 22:44:48,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-21 22:44:48,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2020-07-21 22:44:48,481 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 21 [2020-07-21 22:44:48,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:44:48,481 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2020-07-21 22:44:48,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 22:44:48,481 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2020-07-21 22:44:48,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 22:44:48,482 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:44:48,482 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 22:44:48,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:44:48,696 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 22:44:48,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:44:48,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1056872398, now seen corresponding path program 1 times [2020-07-21 22:44:48,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:44:48,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465651900] [2020-07-21 22:44:48,698 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 22:44:49,350 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:44:49,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:44:49,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 38 conjunts are in the unsatisfiable core [2020-07-21 22:44:49,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:44:49,373 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 22:44:49,374 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 22:44:49,374 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:49,388 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:49,395 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 22:44:49,395 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:49,408 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:49,409 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 22:44:49,410 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:29 [2020-07-21 22:44:49,503 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:49,504 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 22:44:49,506 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:49,588 INFO L624 ElimStorePlain]: treesize reduction 14, result has 88.9 percent of original size [2020-07-21 22:44:49,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:44:49,595 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:49,622 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:49,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:44:49,630 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 22:44:49,631 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:49,651 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:49,661 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 22:44:49,680 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:49,706 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:49,707 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 22:44:49,707 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:49,743 INFO L624 ElimStorePlain]: treesize reduction 20, result has 70.6 percent of original size [2020-07-21 22:44:49,744 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 22:44:49,745 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:114, output treesize:27 [2020-07-21 22:44:49,826 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:49,827 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 22:44:49,827 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:49,897 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:49,900 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 22:44:49,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:44:49,905 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:49,951 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:49,955 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 22:44:49,996 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:50,000 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 22:44:50,029 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:50,034 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 22:44:50,056 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:50,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:44:50,114 INFO L350 Elim1Store]: treesize reduction 65, result has 46.7 percent of original size [2020-07-21 22:44:50,115 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 22:44:50,116 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:50,176 INFO L624 ElimStorePlain]: treesize reduction 18, result has 81.4 percent of original size [2020-07-21 22:44:50,183 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 22:44:50,183 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 11 variables, input treesize:249, output treesize:43 [2020-07-21 22:44:50,298 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 22:44:50,298 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:50,305 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:50,306 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 22:44:50,306 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:45, output treesize:3 [2020-07-21 22:44:50,321 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 22:44:50,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:44:50,359 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 22:44:50,365 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:50,572 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-07-21 22:44:50,573 INFO L624 ElimStorePlain]: treesize reduction 78, result has 51.6 percent of original size [2020-07-21 22:44:50,576 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 22:44:50,595 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:50,597 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 22:44:50,615 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:50,617 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 22:44:50,626 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:50,627 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 22:44:50,627 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:233, output treesize:60 [2020-07-21 22:44:50,701 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 22:44:50,708 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:51,051 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 68 [2020-07-21 22:44:51,052 INFO L624 ElimStorePlain]: treesize reduction 112, result has 51.9 percent of original size [2020-07-21 22:44:51,056 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 22:44:51,102 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:51,111 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 22:44:51,159 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:51,161 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 22:44:51,186 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:51,201 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 22:44:51,202 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 13 variables, input treesize:331, output treesize:117 [2020-07-21 22:44:53,352 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:53,352 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 22:44:53,353 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:53,358 INFO L624 ElimStorePlain]: treesize reduction 129, result has 0.8 percent of original size [2020-07-21 22:44:53,359 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_39| vanished before elimination [2020-07-21 22:44:53,360 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 22:44:53,360 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 17 variables, input treesize:142, output treesize:1 [2020-07-21 22:44:53,366 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 22:44:53,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465651900] [2020-07-21 22:44:53,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 22:44:53,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-21 22:44:53,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583318261] [2020-07-21 22:44:53,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 22:44:53,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:44:53,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 22:44:53,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2020-07-21 22:44:53,369 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 11 states. [2020-07-21 22:44:58,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:44:58,075 INFO L93 Difference]: Finished difference Result 89 states and 97 transitions. [2020-07-21 22:44:58,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 22:44:58,076 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-07-21 22:44:58,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:44:58,077 INFO L225 Difference]: With dead ends: 89 [2020-07-21 22:44:58,078 INFO L226 Difference]: Without dead ends: 87 [2020-07-21 22:44:58,078 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 22:44:58,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-07-21 22:44:58,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 39. [2020-07-21 22:44:58,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-21 22:44:58,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-07-21 22:44:58,084 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 25 [2020-07-21 22:44:58,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:44:58,084 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-07-21 22:44:58,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 22:44:58,085 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-07-21 22:44:58,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-21 22:44:58,086 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:44:58,086 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 22:44:58,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:44:58,299 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 22:44:58,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:44:58,299 INFO L82 PathProgramCache]: Analyzing trace with hash -377613816, now seen corresponding path program 1 times [2020-07-21 22:44:58,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:44:58,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598608408] [2020-07-21 22:44:58,300 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 22:44:58,764 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:44:58,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:44:58,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 51 conjunts are in the unsatisfiable core [2020-07-21 22:44:58,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:44:58,793 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 22:44:58,793 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 22:44:58,794 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:58,804 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:58,805 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 22:44:58,805 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:23 [2020-07-21 22:44:58,867 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:58,867 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 22:44:58,868 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:44:58,869 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:58,955 INFO L624 ElimStorePlain]: treesize reduction 14, result has 93.5 percent of original size [2020-07-21 22:44:58,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:44:58,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:44:58,968 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 22:44:58,979 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:58,980 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 22:44:58,981 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:59,042 INFO L624 ElimStorePlain]: treesize reduction 16, result has 89.4 percent of original size [2020-07-21 22:44:59,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:44:59,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:44:59,066 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:59,066 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 22:44:59,067 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:59,112 INFO L624 ElimStorePlain]: treesize reduction 16, result has 81.2 percent of original size [2020-07-21 22:44:59,113 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 22:44:59,113 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:203, output treesize:82 [2020-07-21 22:44:59,211 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:59,211 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 22:44:59,212 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:44:59,213 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:44:59,214 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:59,461 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-07-21 22:44:59,462 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:59,464 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 22:44:59,515 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 22:44:59,516 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 22:44:59,703 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-07-21 22:44:59,704 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:59,719 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:44:59,720 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 22:44:59,722 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:00,134 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-07-21 22:45:00,135 INFO L624 ElimStorePlain]: treesize reduction 16, result has 96.1 percent of original size [2020-07-21 22:45:00,359 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2020-07-21 22:45:00,360 INFO L350 Elim1Store]: treesize reduction 250, result has 36.9 percent of original size [2020-07-21 22:45:00,360 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 22:45:00,362 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 12 disjuncts [2020-07-21 22:45:00,363 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 11 disjuncts [2020-07-21 22:45:00,364 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 10 disjuncts [2020-07-21 22:45:00,365 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 9 disjuncts [2020-07-21 22:45:00,366 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-07-21 22:45:00,367 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-07-21 22:45:00,369 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 9 disjuncts [2020-07-21 22:45:00,370 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-07-21 22:45:00,370 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-07-21 22:45:00,374 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 12 disjuncts [2020-07-21 22:45:00,375 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 11 disjuncts [2020-07-21 22:45:00,376 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 10 disjuncts [2020-07-21 22:45:00,377 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 9 disjuncts [2020-07-21 22:45:00,378 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-07-21 22:45:00,381 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-07-21 22:45:00,384 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 9 disjuncts [2020-07-21 22:45:00,384 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 9 disjuncts [2020-07-21 22:45:00,385 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 8 disjuncts [2020-07-21 22:45:00,388 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 22:45:00,614 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-07-21 22:45:00,614 INFO L624 ElimStorePlain]: treesize reduction 118, result has 59.2 percent of original size [2020-07-21 22:45:00,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:45:00,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:45:00,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:45:00,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:45:00,675 INFO L350 Elim1Store]: treesize reduction 5, result has 90.7 percent of original size [2020-07-21 22:45:00,676 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 22:45:00,677 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:00,756 INFO L624 ElimStorePlain]: treesize reduction 41, result has 68.0 percent of original size [2020-07-21 22:45:00,758 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 22:45:00,758 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 6 variables, input treesize:457, output treesize:121 [2020-07-21 22:45:00,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:45:00,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:45:00,907 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 22:45:00,908 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:00,920 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:00,921 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 22:45:00,922 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:143, output treesize:80 [2020-07-21 22:45:00,977 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:00,977 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 22:45:00,979 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:45:00,980 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:45:00,980 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:45:00,981 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 22:45:00,982 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 22:45:00,982 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:45:00,983 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 22:45:00,983 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 22:45:00,994 INFO L624 ElimStorePlain]: treesize reduction 60, result has 13.0 percent of original size [2020-07-21 22:45:00,995 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 22:45:00,995 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:81, output treesize:4 [2020-07-21 22:45:01,025 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 22:45:01,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 22:45:01,134 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:45:01,136 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:45:01,138 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 22:45:01,144 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 22:45:01,153 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 22:45:01,164 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 22:45:01,489 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-07-21 22:45:01,490 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:01,508 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 22:45:01,515 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 22:45:01,782 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-07-21 22:45:01,782 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:01,791 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 22:45:01,800 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 22:45:02,345 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-07-21 22:45:02,346 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:02,362 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 22:45:02,382 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 22:45:02,957 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-07-21 22:45:02,958 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 22:45:02,960 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 22:45:02,961 INFO L244 ElimStorePlain]: Needed 9 recursive calls to eliminate 5 variables, input treesize:1145, output treesize:1527 [2020-07-21 22:45:04,196 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-07-21 22:45:04,205 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 22:45:04,223 INFO L440 ElimStorePlain]: Different costs {36=[|#memory_$Pointer$.offset|], 66=[|#memory_$Pointer$.base|]} [2020-07-21 22:45:04,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 22:45:04,338 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 22:45:04,344 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 22:45:15,515 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 350688040968630 treesize of output 350685893484982