/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:22:36,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:22:36,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:22:36,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:22:36,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:22:36,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:22:36,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:22:36,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:22:36,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:22:36,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:22:36,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:22:36,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:22:36,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:22:37,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:22:37,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:22:37,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:22:37,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:22:37,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:22:37,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:22:37,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:22:37,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:22:37,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:22:37,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:22:37,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:22:37,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 16:22:37,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 16:22:37,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 16:22:37,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 16:22:37,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 16:22:37,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 16:22:37,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 16:22:37,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 16:22:37,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 16:22:37,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 16:22:37,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 16:22:37,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 16:22:37,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 16:22:37,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 16:22:37,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:22:37,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:22:37,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:22:37,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 16:22:37,047 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:22:37,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:22:37,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:22:37,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:22:37,049 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:22:37,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:22:37,050 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:22:37,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:22:37,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:22:37,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:22:37,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:22:37,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:22:37,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:22:37,051 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:22:37,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:22:37,051 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:22:37,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:22:37,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:22:37,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:22:37,052 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:22:37,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:22:37,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:22:37,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:22:37,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:22:37,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:22:37,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:22:37,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:37,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:22:37,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:22:37,054 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 16:22:37,372 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:22:37,399 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:22:37,403 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:22:37,406 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:22:37,407 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:22:37,409 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-21 16:22:37,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a051770d/b7e0331276e74e8e80f3f84b758d68c7/FLAG2ecd0c072 [2020-07-21 16:22:38,144 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:22:38,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-21 16:22:38,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a051770d/b7e0331276e74e8e80f3f84b758d68c7/FLAG2ecd0c072 [2020-07-21 16:22:38,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a051770d/b7e0331276e74e8e80f3f84b758d68c7 [2020-07-21 16:22:38,361 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:22:38,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:22:38,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:22:38,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:22:38,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:22:38,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:22:38" (1/1) ... [2020-07-21 16:22:38,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e10ba91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:38, skipping insertion in model container [2020-07-21 16:22:38,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:22:38" (1/1) ... [2020-07-21 16:22:38,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:22:38,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:22:38,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:22:38,922 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:22:38,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:22:39,034 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:22:39,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:39 WrapperNode [2020-07-21 16:22:39,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:22:39,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:22:39,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:22:39,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:22:39,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:39" (1/1) ... [2020-07-21 16:22:39,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:39" (1/1) ... [2020-07-21 16:22:39,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:39" (1/1) ... [2020-07-21 16:22:39,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:39" (1/1) ... [2020-07-21 16:22:39,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:39" (1/1) ... [2020-07-21 16:22:39,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:39" (1/1) ... [2020-07-21 16:22:39,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:39" (1/1) ... [2020-07-21 16:22:39,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:22:39,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:22:39,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:22:39,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:22:39,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:22:39,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:22:39,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:22:39,192 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:22:39,192 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 16:22:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 16:22:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 16:22:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 16:22:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 16:22:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 16:22:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 16:22:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 16:22:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 16:22:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 16:22:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 16:22:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 16:22:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 16:22:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 16:22:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 16:22:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 16:22:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 16:22:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 16:22:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 16:22:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 16:22:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 16:22:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 16:22:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 16:22:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 16:22:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 16:22:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 16:22:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 16:22:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 16:22:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 16:22:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 16:22:39,198 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 16:22:39,199 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 16:22:39,199 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 16:22:39,199 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 16:22:39,199 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 16:22:39,199 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 16:22:39,200 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 16:22:39,200 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 16:22:39,200 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 16:22:39,200 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 16:22:39,200 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 16:22:39,201 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 16:22:39,201 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 16:22:39,201 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 16:22:39,201 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 16:22:39,201 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 16:22:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 16:22:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 16:22:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 16:22:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 16:22:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 16:22:39,202 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 16:22:39,203 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 16:22:39,203 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 16:22:39,203 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 16:22:39,203 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 16:22:39,203 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 16:22:39,203 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 16:22:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-21 16:22:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 16:22:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 16:22:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-21 16:22:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 16:22:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 16:22:39,204 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-21 16:22:39,205 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 16:22:39,205 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 16:22:39,205 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 16:22:39,205 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 16:22:39,205 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 16:22:39,205 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 16:22:39,205 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 16:22:39,206 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 16:22:39,206 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 16:22:39,206 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 16:22:39,206 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 16:22:39,206 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 16:22:39,206 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 16:22:39,207 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 16:22:39,207 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 16:22:39,207 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 16:22:39,207 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 16:22:39,207 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 16:22:39,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 16:22:39,208 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 16:22:39,208 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 16:22:39,208 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 16:22:39,208 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 16:22:39,208 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 16:22:39,208 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 16:22:39,209 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 16:22:39,209 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 16:22:39,209 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 16:22:39,209 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 16:22:39,209 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 16:22:39,209 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 16:22:39,209 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 16:22:39,210 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 16:22:39,210 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 16:22:39,210 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 16:22:39,210 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 16:22:39,210 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 16:22:39,210 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 16:22:39,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:22:39,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:22:39,211 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:22:39,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 16:22:39,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 16:22:39,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 16:22:39,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 16:22:39,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 16:22:39,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 16:22:39,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:22:39,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:22:39,880 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:22:39,882 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-07-21 16:22:39,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:22:39 BoogieIcfgContainer [2020-07-21 16:22:39,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:22:39,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:22:39,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:22:39,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:22:39,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:22:38" (1/3) ... [2020-07-21 16:22:39,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1683205e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:22:39, skipping insertion in model container [2020-07-21 16:22:39,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:22:39" (2/3) ... [2020-07-21 16:22:39,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1683205e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:22:39, skipping insertion in model container [2020-07-21 16:22:39,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:22:39" (3/3) ... [2020-07-21 16:22:39,907 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-07-21 16:22:39,921 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:22:39,932 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-07-21 16:22:39,947 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-07-21 16:22:39,971 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:22:39,971 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:22:39,971 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:22:39,972 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:22:39,972 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:22:39,972 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:22:39,972 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:22:39,972 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:22:39,995 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-07-21 16:22:40,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 16:22:40,003 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:22:40,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:22:40,005 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:22:40,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:22:40,013 INFO L82 PathProgramCache]: Analyzing trace with hash -742552803, now seen corresponding path program 1 times [2020-07-21 16:22:40,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:22:40,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058807477] [2020-07-21 16:22:40,023 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:40,256 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:22:40,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:22:40,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 16:22:40,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:22:40,354 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 16:22:40,358 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:40,371 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:40,372 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:40,373 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:4 [2020-07-21 16:22:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:22:40,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:22:40,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058807477] [2020-07-21 16:22:40,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:22:40,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 16:22:40,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399888617] [2020-07-21 16:22:40,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 16:22:40,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:22:40,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 16:22:40,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 16:22:40,417 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2020-07-21 16:22:40,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:22:40,548 INFO L93 Difference]: Finished difference Result 73 states and 118 transitions. [2020-07-21 16:22:40,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 16:22:40,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-21 16:22:40,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:22:40,563 INFO L225 Difference]: With dead ends: 73 [2020-07-21 16:22:40,563 INFO L226 Difference]: Without dead ends: 35 [2020-07-21 16:22:40,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 16:22:40,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-21 16:22:40,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2020-07-21 16:22:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-21 16:22:40,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-21 16:22:40,617 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 10 [2020-07-21 16:22:40,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:22:40,617 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-21 16:22:40,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 16:22:40,618 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-21 16:22:40,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 16:22:40,619 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:22:40,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:22:40,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:40,834 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:22:40,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:22:40,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1973625457, now seen corresponding path program 1 times [2020-07-21 16:22:40,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:22:40,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81221618] [2020-07-21 16:22:40,836 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:40,932 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:22:40,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:22:40,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 16:22:40,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:22:40,947 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 16:22:40,948 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:40,955 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:40,956 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:40,956 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-21 16:22:40,982 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 16:22:40,983 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:40,986 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:40,986 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 16:22:40,987 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 16:22:40,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:22:40,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:22:40,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81221618] [2020-07-21 16:22:40,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:22:40,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:22:40,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952485511] [2020-07-21 16:22:40,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:22:40,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:22:40,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:22:40,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:22:40,999 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 5 states. [2020-07-21 16:22:41,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:22:41,118 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-07-21 16:22:41,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:22:41,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-21 16:22:41,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:22:41,121 INFO L225 Difference]: With dead ends: 54 [2020-07-21 16:22:41,121 INFO L226 Difference]: Without dead ends: 52 [2020-07-21 16:22:41,122 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 16:22:41,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-21 16:22:41,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 36. [2020-07-21 16:22:41,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-21 16:22:41,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-07-21 16:22:41,132 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 14 [2020-07-21 16:22:41,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:22:41,132 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-07-21 16:22:41,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:22:41,133 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-07-21 16:22:41,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 16:22:41,134 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:22:41,134 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:22:41,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:41,349 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:22:41,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:22:41,351 INFO L82 PathProgramCache]: Analyzing trace with hash -954667545, now seen corresponding path program 1 times [2020-07-21 16:22:41,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:22:41,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775065825] [2020-07-21 16:22:41,352 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:41,474 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:22:41,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:22:41,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-21 16:22:41,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:22:41,514 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 16:22:41,515 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 16:22:41,516 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:41,537 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:41,546 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 16:22:41,547 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:41,564 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:41,569 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 16:22:41,570 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:26 [2020-07-21 16:22:41,677 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:41,678 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 16:22:41,681 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:41,739 INFO L624 ElimStorePlain]: treesize reduction 14, result has 80.3 percent of original size [2020-07-21 16:22:41,749 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 16:22:41,772 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:41,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:41,783 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 41 treesize of output 20 [2020-07-21 16:22:41,784 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:41,801 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:41,803 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 16:22:41,803 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:59, output treesize:24 [2020-07-21 16:22:41,902 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:41,902 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 16:22:41,904 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:41,935 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:41,938 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_30|, |v_#memory_int_31|], 4=[|v_#memory_int_33|]} [2020-07-21 16:22:41,943 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 16:22:41,965 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:41,969 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 16:22:41,989 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:42,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:42,045 INFO L350 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2020-07-21 16:22:42,046 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 2 case distinctions, treesize of input 52 treesize of output 45 [2020-07-21 16:22:42,051 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:42,070 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:42,075 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:42,075 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:77, output treesize:40 [2020-07-21 16:22:42,182 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 37 treesize of output 13 [2020-07-21 16:22:42,183 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:42,192 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:42,194 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:42,194 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:49, output treesize:3 [2020-07-21 16:22:42,209 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 16:22:42,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:22:42,256 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_31|], 3=[|v_#memory_int_30|]} [2020-07-21 16:22:42,260 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 16:22:42,278 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:42,282 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 16:22:42,294 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:42,296 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:42,296 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:63, output treesize:55 [2020-07-21 16:22:42,354 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_29|], 6=[|v_#memory_int_35|]} [2020-07-21 16:22:42,359 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 16:22:42,387 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:42,391 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 16:22:42,412 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:42,415 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: 8 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:42,416 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:96, output treesize:102 [2020-07-21 16:22:44,575 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:44,575 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 16:22:44,577 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:44,584 INFO L624 ElimStorePlain]: treesize reduction 125, result has 0.8 percent of original size [2020-07-21 16:22:44,586 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_28| vanished before elimination [2020-07-21 16:22:44,586 INFO L544 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:44,587 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 14 variables, input treesize:138, output treesize:1 [2020-07-21 16:22:44,595 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 16:22:44,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775065825] [2020-07-21 16:22:44,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:22:44,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-07-21 16:22:44,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40785358] [2020-07-21 16:22:44,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 16:22:44,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:22:44,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 16:22:44,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=83, Unknown=1, NotChecked=0, Total=110 [2020-07-21 16:22:44,598 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 11 states. [2020-07-21 16:22:49,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:22:49,518 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2020-07-21 16:22:49,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 16:22:49,519 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-07-21 16:22:49,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:22:49,521 INFO L225 Difference]: With dead ends: 62 [2020-07-21 16:22:49,521 INFO L226 Difference]: Without dead ends: 60 [2020-07-21 16:22:49,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=78, Invalid=193, Unknown=1, NotChecked=0, Total=272 [2020-07-21 16:22:49,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-21 16:22:49,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 27. [2020-07-21 16:22:49,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-21 16:22:49,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-07-21 16:22:49,531 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2020-07-21 16:22:49,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:22:49,532 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-07-21 16:22:49,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 16:22:49,532 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-07-21 16:22:49,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 16:22:49,533 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:22:49,533 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 16:22:49,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:49,737 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:22:49,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:22:49,737 INFO L82 PathProgramCache]: Analyzing trace with hash 903516662, now seen corresponding path program 1 times [2020-07-21 16:22:49,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:22:49,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119548519] [2020-07-21 16:22:49,739 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:49,844 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:22:49,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:22:49,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:22:49,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:22:49,870 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 16:22:49,871 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:49,874 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:49,874 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 16:22:49,875 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 16:22:49,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:22:49,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:22:49,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119548519] [2020-07-21 16:22:49,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:22:49,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 16:22:49,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697284744] [2020-07-21 16:22:49,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 16:22:49,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:22:49,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 16:22:49,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:22:49,887 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-07-21 16:22:50,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:22:50,015 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-07-21 16:22:50,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 16:22:50,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-21 16:22:50,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:22:50,018 INFO L225 Difference]: With dead ends: 42 [2020-07-21 16:22:50,018 INFO L226 Difference]: Without dead ends: 30 [2020-07-21 16:22:50,019 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 16:22:50,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-21 16:22:50,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-07-21 16:22:50,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-21 16:22:50,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-21 16:22:50,025 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2020-07-21 16:22:50,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:22:50,026 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-21 16:22:50,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 16:22:50,026 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-21 16:22:50,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 16:22:50,027 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:22:50,027 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 16:22:50,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:50,229 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:22:50,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:22:50,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1223911862, now seen corresponding path program 1 times [2020-07-21 16:22:50,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:22:50,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511784592] [2020-07-21 16:22:50,231 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 16:22:50,320 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:22:50,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:22:50,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 16:22:50,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:22:50,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:50,423 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-07-21 16:22:50,423 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 38 treesize of output 48 [2020-07-21 16:22:50,424 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:50,499 INFO L624 ElimStorePlain]: treesize reduction 16, result has 81.4 percent of original size [2020-07-21 16:22:50,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:50,581 INFO L350 Elim1Store]: treesize reduction 33, result has 55.4 percent of original size [2020-07-21 16:22:50,582 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 38 treesize of output 48 [2020-07-21 16:22:50,583 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:50,658 INFO L624 ElimStorePlain]: treesize reduction 16, result has 79.7 percent of original size [2020-07-21 16:22:50,658 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:50,659 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:77, output treesize:63 [2020-07-21 16:22:50,748 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 16:22:50,754 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 16:22:50,767 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 16:22:50,767 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:50,773 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 16:22:50,773 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:50,788 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:50,788 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-07-21 16:22:50,791 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:50,840 INFO L624 ElimStorePlain]: treesize reduction 12, result has 84.6 percent of original size [2020-07-21 16:22:50,845 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 16:22:50,847 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:50,853 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 16:22:50,854 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:50,862 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:50,863 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-07-21 16:22:50,864 INFO L544 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:50,877 INFO L624 ElimStorePlain]: treesize reduction 20, result has 25.9 percent of original size [2020-07-21 16:22:50,878 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 16:22:50,878 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:110, output treesize:7 [2020-07-21 16:22:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:22:50,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:22:50,943 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 16:22:50,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:22:50,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511784592] [2020-07-21 16:22:50,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:22:50,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 16:22:50,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145681788] [2020-07-21 16:22:50,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 16:22:50,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:22:50,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 16:22:50,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 16:22:50,960 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 7 states. [2020-07-21 16:22:51,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:22:51,253 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-07-21 16:22:51,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 16:22:51,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-07-21 16:22:51,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:22:51,258 INFO L225 Difference]: With dead ends: 53 [2020-07-21 16:22:51,258 INFO L226 Difference]: Without dead ends: 31 [2020-07-21 16:22:51,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-07-21 16:22:51,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-21 16:22:51,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-07-21 16:22:51,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-21 16:22:51,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-07-21 16:22:51,272 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2020-07-21 16:22:51,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:22:51,272 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-07-21 16:22:51,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 16:22:51,277 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-07-21 16:22:51,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 16:22:51,278 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:22:51,278 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] [2020-07-21 16:22:51,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:22:51,479 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:22:51,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:22:51,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1223476830, now seen corresponding path program 1 times [2020-07-21 16:22:51,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:22:51,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100397017] [2020-07-21 16:22:51,481 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 16:22:51,596 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:22:51,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:22:51,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 44 conjunts are in the unsatisfiable core [2020-07-21 16:22:51,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:22:51,620 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 16:22:51,620 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 16:22:51,621 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:51,629 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:51,630 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:51,630 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:20 [2020-07-21 16:22:51,736 INFO L350 Elim1Store]: treesize reduction 8, result has 87.3 percent of original size [2020-07-21 16:22:51,737 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 16:22:51,738 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:51,810 INFO L624 ElimStorePlain]: treesize reduction 28, result has 75.0 percent of original size [2020-07-21 16:22:51,818 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 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-21 16:22:51,819 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:51,841 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:51,847 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 0 case distinctions, treesize of input 27 treesize of output 15 [2020-07-21 16:22:51,848 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:51,870 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:51,871 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:51,871 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:82, output treesize:58 [2020-07-21 16:22:52,009 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:52,010 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 49 [2020-07-21 16:22:52,012 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:52,082 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:52,089 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 16:22:52,148 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:52,153 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 16:22:52,190 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:52,395 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2020-07-21 16:22:52,397 INFO L350 Elim1Store]: treesize reduction 131, result has 48.2 percent of original size [2020-07-21 16:22:52,397 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 167 treesize of output 191 [2020-07-21 16:22:52,401 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[11, 3, 2, 1] term [2020-07-21 16:22:52,402 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 11 disjuncts [2020-07-21 16:22:52,403 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:52,512 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 51 [2020-07-21 16:22:52,514 INFO L624 ElimStorePlain]: treesize reduction 110, result has 56.0 percent of original size [2020-07-21 16:22:52,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 16:22:52,528 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 43 [2020-07-21 16:22:52,529 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:52,554 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:52,556 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:52,557 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:232, output treesize:94 [2020-07-21 16:22:52,652 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2020-07-21 16:22:52,653 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:52,671 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:52,672 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:52,673 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:108, output treesize:82 [2020-07-21 16:22:52,738 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:52,739 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 69 [2020-07-21 16:22:52,740 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 6 disjuncts [2020-07-21 16:22:52,744 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-07-21 16:22:52,745 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-07-21 16:22:52,746 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 16:22:52,760 INFO L624 ElimStorePlain]: treesize reduction 9, result has 50.0 percent of original size [2020-07-21 16:22:52,761 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 16:22:52,761 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:83, output treesize:4 [2020-07-21 16:22:52,790 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 16:22:52,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:22:52,864 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_32|], 6=[|v_#memory_$Pointer$.offset_29|, |v_#memory_$Pointer$.base_29|, |v_#memory_$Pointer$.base_32|]} [2020-07-21 16:22:52,869 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 16:22:52,910 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:52,913 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 16:22:52,940 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:52,943 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 16:22:52,967 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:52,971 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 16:22:52,984 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 16:22:52,986 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-2 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2020-07-21 16:22:52,986 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:141, output treesize:140 [2020-07-21 16:22:53,059 INFO L440 ElimStorePlain]: Different costs {6=[|#memory_$Pointer$.offset|], 14=[|#memory_$Pointer$.base|]} [2020-07-21 16:22:53,146 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 92472118 treesize of output 92439350 [2020-07-21 16:23:01,536 INFO L544 ElimStorePlain]: Start of recursive call 2: 8192 dim-0 vars, End of recursive call: 8192 dim-0 vars, and 2 xjuncts.