/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:30:54,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:30:54,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:30:54,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:30:54,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:30:54,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:30:54,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:30:54,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:30:54,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:30:54,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:30:54,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:30:54,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:30:54,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:30:54,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:30:54,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:30:54,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:30:54,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:30:54,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:30:54,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:30:54,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:30:54,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:30:54,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:30:54,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:30:54,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:30:54,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 01:30:54,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 01:30:54,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 01:30:54,148 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 01:30:54,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 01:30:54,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 01:30:54,151 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 01:30:54,152 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 01:30:54,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 01:30:54,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 01:30:54,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 01:30:54,155 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 01:30:54,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 01:30:54,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 01:30:54,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:30:54,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:30:54,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:30:54,158 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 [2020-07-20 01:30:54,195 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:30:54,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:30:54,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:30:54,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:30:54,200 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:30:54,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:30:54,201 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:30:54,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:30:54,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:30:54,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:30:54,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:30:54,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:30:54,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:30:54,205 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:30:54,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:30:54,205 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:30:54,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:30:54,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:30:54,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:30:54,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:30:54,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:30:54,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:30:54,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:30:54,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:30:54,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:30:54,207 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:30:54,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:30:54,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:30:54,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:30:54,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_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 -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 01:30:54,510 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:30:54,525 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:30:54,529 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:30:54,530 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:30:54,531 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:30:54,531 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-07-20 01:30:54,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44a653259/e109b9c59f684987ab7cffcecab62a98/FLAG4019e39dd [2020-07-20 01:30:55,188 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:30:55,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-07-20 01:30:55,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44a653259/e109b9c59f684987ab7cffcecab62a98/FLAG4019e39dd [2020-07-20 01:30:55,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44a653259/e109b9c59f684987ab7cffcecab62a98 [2020-07-20 01:30:55,505 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:30:55,508 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:30:55,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:30:55,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:30:55,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:30:55,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:30:55" (1/1) ... [2020-07-20 01:30:55,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@656b6f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:30:55, skipping insertion in model container [2020-07-20 01:30:55,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:30:55" (1/1) ... [2020-07-20 01:30:55,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:30:55,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:30:56,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:30:56,112 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:30:56,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:30:56,241 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:30:56,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:30:56 WrapperNode [2020-07-20 01:30:56,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:30:56,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:30:56,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:30:56,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:30:56,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:30:56" (1/1) ... [2020-07-20 01:30:56,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:30:56" (1/1) ... [2020-07-20 01:30:56,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:30:56" (1/1) ... [2020-07-20 01:30:56,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:30:56" (1/1) ... [2020-07-20 01:30:56,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:30:56" (1/1) ... [2020-07-20 01:30:56,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:30:56" (1/1) ... [2020-07-20 01:30:56,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:30:56" (1/1) ... [2020-07-20 01:30:56,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:30:56,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:30:56,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:30:56,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:30:56,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:30:56" (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 [2020-07-20 01:30:56,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:30:56,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:30:56,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-20 01:30:56,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-20 01:30:56,381 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-20 01:30:56,382 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-07-20 01:30:56,382 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-07-20 01:30:56,382 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-07-20 01:30:56,382 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-07-20 01:30:56,382 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-07-20 01:30:56,383 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:30:56,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:30:56,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:30:56,383 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-20 01:30:56,383 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-20 01:30:56,384 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 01:30:56,384 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 01:30:56,384 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 01:30:56,384 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 01:30:56,385 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 01:30:56,385 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 01:30:56,385 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 01:30:56,385 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 01:30:56,386 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 01:30:56,386 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 01:30:56,386 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 01:30:56,386 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 01:30:56,386 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 01:30:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 01:30:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 01:30:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 01:30:56,387 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 01:30:56,388 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 01:30:56,388 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 01:30:56,388 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 01:30:56,388 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 01:30:56,388 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 01:30:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 01:30:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 01:30:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 01:30:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 01:30:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 01:30:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 01:30:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 01:30:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 01:30:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 01:30:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 01:30:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 01:30:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 01:30:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 01:30:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 01:30:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 01:30:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 01:30:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 01:30:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 01:30:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 01:30:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 01:30:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 01:30:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 01:30:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 01:30:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 01:30:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 01:30:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 01:30:56,392 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 01:30:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 01:30:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 01:30:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 01:30:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 01:30:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 01:30:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 01:30:56,393 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 01:30:56,394 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 01:30:56,394 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 01:30:56,394 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-20 01:30:56,394 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 01:30:56,394 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 01:30:56,395 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-20 01:30:56,395 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 01:30:56,395 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 01:30:56,395 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-20 01:30:56,395 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 01:30:56,395 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 01:30:56,396 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 01:30:56,396 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 01:30:56,396 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 01:30:56,396 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 01:30:56,396 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 01:30:56,396 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 01:30:56,397 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 01:30:56,397 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 01:30:56,397 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 01:30:56,397 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 01:30:56,397 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 01:30:56,397 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 01:30:56,397 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 01:30:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 01:30:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 01:30:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 01:30:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 01:30:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 01:30:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 01:30:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 01:30:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 01:30:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 01:30:56,398 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 01:30:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 01:30:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 01:30:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 01:30:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 01:30:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 01:30:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 01:30:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 01:30:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 01:30:56,399 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 01:30:56,400 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 01:30:56,400 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 01:30:56,400 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 01:30:56,400 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 01:30:56,400 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-20 01:30:56,400 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-07-20 01:30:56,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 01:30:56,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 01:30:56,401 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-07-20 01:30:56,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 01:30:56,401 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-07-20 01:30:56,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 01:30:56,401 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-07-20 01:30:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-07-20 01:30:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:30:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 01:30:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-20 01:30:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:30:56,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:30:56,775 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-20 01:30:57,036 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:30:57,036 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-20 01:30:57,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:30:57 BoogieIcfgContainer [2020-07-20 01:30:57,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:30:57,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:30:57,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:30:57,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:30:57,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:30:55" (1/3) ... [2020-07-20 01:30:57,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd9aeec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:30:57, skipping insertion in model container [2020-07-20 01:30:57,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:30:56" (2/3) ... [2020-07-20 01:30:57,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd9aeec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:30:57, skipping insertion in model container [2020-07-20 01:30:57,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:30:57" (3/3) ... [2020-07-20 01:30:57,051 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-07-20 01:30:57,063 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:30:57,072 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:30:57,089 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:30:57,118 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:30:57,118 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:30:57,118 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:30:57,119 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:30:57,119 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:30:57,119 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:30:57,119 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:30:57,119 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:30:57,142 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-07-20 01:30:57,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-20 01:30:57,151 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:30:57,152 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:30:57,153 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:30:57,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:30:57,162 INFO L82 PathProgramCache]: Analyzing trace with hash 960784814, now seen corresponding path program 1 times [2020-07-20 01:30:57,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:30:57,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652775926] [2020-07-20 01:30:57,175 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3838b313 [2020-07-20 01:30:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:30:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:30:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:30:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:30:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:30:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:30:57,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-20 01:30:57,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652775926] [2020-07-20 01:30:57,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:30:57,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:30:57,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050148320] [2020-07-20 01:30:57,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:30:57,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:30:57,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:30:57,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:30:57,485 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 4 states. [2020-07-20 01:30:57,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:30:57,811 INFO L93 Difference]: Finished difference Result 136 states and 184 transitions. [2020-07-20 01:30:57,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 01:30:57,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-07-20 01:30:57,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:30:57,826 INFO L225 Difference]: With dead ends: 136 [2020-07-20 01:30:57,826 INFO L226 Difference]: Without dead ends: 58 [2020-07-20 01:30:57,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:30:57,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-20 01:30:57,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2020-07-20 01:30:57,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-20 01:30:57,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-07-20 01:30:57,889 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 37 [2020-07-20 01:30:57,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:30:57,890 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-07-20 01:30:57,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:30:57,890 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-07-20 01:30:57,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-20 01:30:57,893 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:30:57,894 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:30:57,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:30:57,894 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:30:57,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:30:57,895 INFO L82 PathProgramCache]: Analyzing trace with hash 322036078, now seen corresponding path program 1 times [2020-07-20 01:30:57,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:30:57,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911173882] [2020-07-20 01:30:57,896 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3838b313 [2020-07-20 01:30:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:30:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:30:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:30:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:30:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:30:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:30:58,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 01:30:58,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911173882] [2020-07-20 01:30:58,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72152987] [2020-07-20 01:30:58,261 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@44203a73 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:30:58,492 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@44203a73 issued 4 check-sat command(s) [2020-07-20 01:30:58,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:30:58,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 01:30:58,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:30:58,660 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:30:58,665 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:30:58,708 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:30:58,756 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 01:30:58,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 01:30:58,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 17 [2020-07-20 01:30:58,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099241484] [2020-07-20 01:30:58,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 01:30:58,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:30:58,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 01:30:58,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-07-20 01:30:58,766 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 9 states. [2020-07-20 01:30:59,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:30:59,049 INFO L93 Difference]: Finished difference Result 116 states and 142 transitions. [2020-07-20 01:30:59,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 01:30:59,050 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-07-20 01:30:59,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:30:59,053 INFO L225 Difference]: With dead ends: 116 [2020-07-20 01:30:59,053 INFO L226 Difference]: Without dead ends: 81 [2020-07-20 01:30:59,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-07-20 01:30:59,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-07-20 01:30:59,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 67. [2020-07-20 01:30:59,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-20 01:30:59,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2020-07-20 01:30:59,071 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 44 [2020-07-20 01:30:59,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:30:59,072 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2020-07-20 01:30:59,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 01:30:59,072 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2020-07-20 01:30:59,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-20 01:30:59,074 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:30:59,074 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:30:59,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-20 01:30:59,288 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:30:59,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:30:59,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1366907664, now seen corresponding path program 1 times [2020-07-20 01:30:59,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:30:59,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653758967] [2020-07-20 01:30:59,290 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3838b313 [2020-07-20 01:30:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:30:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:30:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:30:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:30:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:30:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:30:59,480 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 01:30:59,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653758967] [2020-07-20 01:30:59,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647757154] [2020-07-20 01:30:59,481 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60503c79 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:30:59,597 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60503c79 issued 3 check-sat command(s) [2020-07-20 01:30:59,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:30:59,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 01:30:59,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:30:59,680 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:30:59,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 01:30:59,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 15 [2020-07-20 01:30:59,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126871187] [2020-07-20 01:30:59,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 01:30:59,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:30:59,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 01:30:59,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-07-20 01:30:59,683 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand 9 states. [2020-07-20 01:30:59,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:30:59,791 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2020-07-20 01:30:59,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 01:30:59,792 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-07-20 01:30:59,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:30:59,794 INFO L225 Difference]: With dead ends: 108 [2020-07-20 01:30:59,794 INFO L226 Difference]: Without dead ends: 62 [2020-07-20 01:30:59,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-07-20 01:30:59,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-07-20 01:30:59,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-07-20 01:30:59,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-20 01:30:59,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2020-07-20 01:30:59,806 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 44 [2020-07-20 01:30:59,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:30:59,807 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2020-07-20 01:30:59,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 01:30:59,807 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2020-07-20 01:30:59,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-20 01:30:59,809 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:30:59,809 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:31:00,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:31:00,025 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:31:00,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:31:00,025 INFO L82 PathProgramCache]: Analyzing trace with hash -877094443, now seen corresponding path program 1 times [2020-07-20 01:31:00,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:31:00,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883554781] [2020-07-20 01:31:00,026 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3838b313 [2020-07-20 01:31:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:00,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 01:31:00,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883554781] [2020-07-20 01:31:00,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977143290] [2020-07-20 01:31:00,233 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@29ae6bc7 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:31:00,370 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@29ae6bc7 issued 3 check-sat command(s) [2020-07-20 01:31:00,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:31:00,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-20 01:31:00,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:31:00,619 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 16 treesize of output 8 [2020-07-20 01:31:00,620 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:31:00,628 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:31:00,628 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:31:00,628 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:4 [2020-07-20 01:31:00,705 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:31:00,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 01:31:00,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2020-07-20 01:31:00,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537413614] [2020-07-20 01:31:00,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 01:31:00,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:31:00,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 01:31:00,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-07-20 01:31:00,708 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand 12 states. [2020-07-20 01:31:09,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:31:09,110 INFO L93 Difference]: Finished difference Result 112 states and 133 transitions. [2020-07-20 01:31:09,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 01:31:09,111 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-07-20 01:31:09,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:31:09,113 INFO L225 Difference]: With dead ends: 112 [2020-07-20 01:31:09,113 INFO L226 Difference]: Without dead ends: 105 [2020-07-20 01:31:09,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2020-07-20 01:31:09,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-20 01:31:09,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 81. [2020-07-20 01:31:09,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-20 01:31:09,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 97 transitions. [2020-07-20 01:31:09,127 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 97 transitions. Word has length 48 [2020-07-20 01:31:09,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:31:09,128 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 97 transitions. [2020-07-20 01:31:09,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 01:31:09,128 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 97 transitions. [2020-07-20 01:31:09,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-07-20 01:31:09,130 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:31:09,130 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:31:09,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:31:09,344 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:31:09,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:31:09,344 INFO L82 PathProgramCache]: Analyzing trace with hash 880198107, now seen corresponding path program 1 times [2020-07-20 01:31:09,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:31:09,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026694023] [2020-07-20 01:31:09,346 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3838b313 [2020-07-20 01:31:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:09,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 01:31:09,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026694023] [2020-07-20 01:31:09,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659829001] [2020-07-20 01:31:09,618 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3dce3f0a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:31:09,738 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3dce3f0a issued 3 check-sat command(s) [2020-07-20 01:31:09,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:31:09,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 01:31:09,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:31:09,846 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:31:09,848 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:31:09,882 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:31:09,909 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 01:31:09,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:31:09,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 17 [2020-07-20 01:31:09,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19154183] [2020-07-20 01:31:09,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-20 01:31:09,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:31:09,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-20 01:31:09,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-07-20 01:31:09,912 INFO L87 Difference]: Start difference. First operand 81 states and 97 transitions. Second operand 17 states. [2020-07-20 01:31:10,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:31:10,902 INFO L93 Difference]: Finished difference Result 175 states and 217 transitions. [2020-07-20 01:31:10,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-20 01:31:10,903 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 49 [2020-07-20 01:31:10,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:31:10,906 INFO L225 Difference]: With dead ends: 175 [2020-07-20 01:31:10,906 INFO L226 Difference]: Without dead ends: 110 [2020-07-20 01:31:10,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=154, Invalid=716, Unknown=0, NotChecked=0, Total=870 [2020-07-20 01:31:10,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-07-20 01:31:10,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 92. [2020-07-20 01:31:10,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-07-20 01:31:10,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 110 transitions. [2020-07-20 01:31:10,925 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 110 transitions. Word has length 49 [2020-07-20 01:31:10,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:31:10,926 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 110 transitions. [2020-07-20 01:31:10,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-20 01:31:10,926 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 110 transitions. [2020-07-20 01:31:10,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-20 01:31:10,927 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:31:10,928 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:31:11,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:31:11,134 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:31:11,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:31:11,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1960431148, now seen corresponding path program 2 times [2020-07-20 01:31:11,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:31:11,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593397260] [2020-07-20 01:31:11,136 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3838b313 [2020-07-20 01:31:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 01:31:11,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593397260] [2020-07-20 01:31:11,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:31:11,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 01:31:11,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236221116] [2020-07-20 01:31:11,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 01:31:11,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:31:11,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 01:31:11,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-20 01:31:11,305 INFO L87 Difference]: Start difference. First operand 92 states and 110 transitions. Second operand 9 states. [2020-07-20 01:31:11,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:31:11,724 INFO L93 Difference]: Finished difference Result 185 states and 230 transitions. [2020-07-20 01:31:11,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 01:31:11,725 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-07-20 01:31:11,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:31:11,726 INFO L225 Difference]: With dead ends: 185 [2020-07-20 01:31:11,727 INFO L226 Difference]: Without dead ends: 122 [2020-07-20 01:31:11,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-07-20 01:31:11,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-20 01:31:11,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 103. [2020-07-20 01:31:11,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-07-20 01:31:11,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 124 transitions. [2020-07-20 01:31:11,751 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 124 transitions. Word has length 53 [2020-07-20 01:31:11,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:31:11,752 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 124 transitions. [2020-07-20 01:31:11,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 01:31:11,752 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 124 transitions. [2020-07-20 01:31:11,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-20 01:31:11,754 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:31:11,754 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:31:11,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 01:31:11,755 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:31:11,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:31:11,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1747730134, now seen corresponding path program 1 times [2020-07-20 01:31:11,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:31:11,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96425601] [2020-07-20 01:31:11,756 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3838b313 [2020-07-20 01:31:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:12,003 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 01:31:12,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96425601] [2020-07-20 01:31:12,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049290338] [2020-07-20 01:31:12,004 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@47ec8f32 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:31:12,158 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@47ec8f32 issued 3 check-sat command(s) [2020-07-20 01:31:12,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:31:12,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 42 conjunts are in the unsatisfiable core [2020-07-20 01:31:12,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:31:12,223 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-20 01:31:12,224 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:31:12,230 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:31:12,231 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:31:12,231 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:12 [2020-07-20 01:31:12,484 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 31 treesize of output 19 [2020-07-20 01:31:12,485 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:31:12,490 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:31:12,491 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-07-20 01:31:12,493 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:23 [2020-07-20 01:31:14,564 WARN L860 $PredicateComparison]: unable to prove that (exists ((|main_~#s~0.base| Int) (|main_~#s~0.offset| Int)) (not (= (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |main_~#s~0.base|) |main_~#s~0.offset|)) 0) 0))) is different from true [2020-07-20 01:31:18,608 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 01:31:18,767 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:31:18,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:31:18,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2020-07-20 01:31:18,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712195852] [2020-07-20 01:31:18,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-20 01:31:18,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:31:18,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-20 01:31:18,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=542, Unknown=2, NotChecked=46, Total=650 [2020-07-20 01:31:18,770 INFO L87 Difference]: Start difference. First operand 103 states and 124 transitions. Second operand 26 states. [2020-07-20 01:31:22,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:31:22,798 INFO L93 Difference]: Finished difference Result 141 states and 166 transitions. [2020-07-20 01:31:22,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-20 01:31:22,799 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 53 [2020-07-20 01:31:22,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:31:22,801 INFO L225 Difference]: With dead ends: 141 [2020-07-20 01:31:22,802 INFO L226 Difference]: Without dead ends: 134 [2020-07-20 01:31:22,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=198, Invalid=1444, Unknown=2, NotChecked=78, Total=1722 [2020-07-20 01:31:22,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-07-20 01:31:22,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 104. [2020-07-20 01:31:22,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-07-20 01:31:22,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 125 transitions. [2020-07-20 01:31:22,821 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 125 transitions. Word has length 53 [2020-07-20 01:31:22,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:31:22,821 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 125 transitions. [2020-07-20 01:31:22,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-20 01:31:22,821 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 125 transitions. [2020-07-20 01:31:22,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-20 01:31:22,823 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:31:22,823 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:31:23,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-20 01:31:23,040 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:31:23,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:31:23,040 INFO L82 PathProgramCache]: Analyzing trace with hash 645381370, now seen corresponding path program 2 times [2020-07-20 01:31:23,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:31:23,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152509913] [2020-07-20 01:31:23,042 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3838b313 [2020-07-20 01:31:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:23,423 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-20 01:31:23,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152509913] [2020-07-20 01:31:23,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216205607] [2020-07-20 01:31:23,424 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4d32a763 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:31:23,549 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4d32a763 issued 4 check-sat command(s) [2020-07-20 01:31:23,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:31:23,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 30 conjunts are in the unsatisfiable core [2020-07-20 01:31:23,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:31:23,698 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:31:23,765 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:31:23,918 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:31:23,978 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:31:24,054 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 01:31:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-20 01:31:24,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:31:24,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 29 [2020-07-20 01:31:24,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945227278] [2020-07-20 01:31:24,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-20 01:31:24,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:31:24,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-20 01:31:24,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=737, Unknown=0, NotChecked=0, Total=812 [2020-07-20 01:31:24,062 INFO L87 Difference]: Start difference. First operand 104 states and 125 transitions. Second operand 29 states. [2020-07-20 01:31:26,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:31:26,671 INFO L93 Difference]: Finished difference Result 204 states and 273 transitions. [2020-07-20 01:31:26,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-07-20 01:31:26,671 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 54 [2020-07-20 01:31:26,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:31:26,675 INFO L225 Difference]: With dead ends: 204 [2020-07-20 01:31:26,676 INFO L226 Difference]: Without dead ends: 200 [2020-07-20 01:31:26,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=378, Invalid=2702, Unknown=0, NotChecked=0, Total=3080 [2020-07-20 01:31:26,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-07-20 01:31:26,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 139. [2020-07-20 01:31:26,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-07-20 01:31:26,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 175 transitions. [2020-07-20 01:31:26,731 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 175 transitions. Word has length 54 [2020-07-20 01:31:26,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:31:26,732 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 175 transitions. [2020-07-20 01:31:26,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-20 01:31:26,732 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 175 transitions. [2020-07-20 01:31:26,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 01:31:26,739 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:31:26,739 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:31:26,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:31:26,949 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:31:26,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:31:26,950 INFO L82 PathProgramCache]: Analyzing trace with hash 832308054, now seen corresponding path program 3 times [2020-07-20 01:31:26,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:31:26,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201320675] [2020-07-20 01:31:26,951 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3838b313 [2020-07-20 01:31:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:27,405 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 01:31:27,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201320675] [2020-07-20 01:31:27,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775170900] [2020-07-20 01:31:27,406 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@49fa5bef No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:31:27,519 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@49fa5bef issued 3 check-sat command(s) [2020-07-20 01:31:27,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:31:27,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 64 conjunts are in the unsatisfiable core [2020-07-20 01:31:27,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:31:27,534 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-07-20 01:31:27,534 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:31:27,542 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:31:27,543 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:31:27,543 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-07-20 01:31:27,591 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-20 01:31:27,591 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:31:27,601 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:31:27,605 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-20 01:31:27,606 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 01:31:27,615 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:31:27,616 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:31:27,616 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:23 [2020-07-20 01:31:27,671 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:31:27,672 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-07-20 01:31:27,673 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:31:27,682 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:31:27,683 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:31:27,683 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:25 [2020-07-20 01:31:27,753 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-07-20 01:31:27,754 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:31:27,775 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:31:27,782 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-07-20 01:31:27,783 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 01:31:27,796 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:31:27,797 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:31:27,798 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:44, output treesize:41 [2020-07-20 01:31:29,542 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:31:29,622 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:31:29,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:31:29,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 30 [2020-07-20 01:31:29,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038813141] [2020-07-20 01:31:29,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-20 01:31:29,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:31:29,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-20 01:31:29,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=793, Unknown=0, NotChecked=0, Total=870 [2020-07-20 01:31:29,625 INFO L87 Difference]: Start difference. First operand 139 states and 175 transitions. Second operand 30 states. [2020-07-20 01:31:36,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:31:36,971 INFO L93 Difference]: Finished difference Result 239 states and 301 transitions. [2020-07-20 01:31:36,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-20 01:31:36,972 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 55 [2020-07-20 01:31:36,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:31:36,974 INFO L225 Difference]: With dead ends: 239 [2020-07-20 01:31:36,975 INFO L226 Difference]: Without dead ends: 225 [2020-07-20 01:31:36,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=176, Invalid=1716, Unknown=0, NotChecked=0, Total=1892 [2020-07-20 01:31:36,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-07-20 01:31:37,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 199. [2020-07-20 01:31:37,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-07-20 01:31:37,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 252 transitions. [2020-07-20 01:31:37,004 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 252 transitions. Word has length 55 [2020-07-20 01:31:37,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:31:37,004 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 252 transitions. [2020-07-20 01:31:37,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-20 01:31:37,005 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 252 transitions. [2020-07-20 01:31:37,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 01:31:37,006 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:31:37,006 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:31:37,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:31:37,207 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:31:37,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:31:37,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1162383005, now seen corresponding path program 1 times [2020-07-20 01:31:37,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:31:37,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860194825] [2020-07-20 01:31:37,209 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3838b313 [2020-07-20 01:31:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:37,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:31:37,459 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 01:31:37,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860194825] [2020-07-20 01:31:37,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289542256] [2020-07-20 01:31:37,460 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2890f27f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:31:37,585 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2890f27f issued 4 check-sat command(s) [2020-07-20 01:31:37,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:31:37,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 01:31:37,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:31:37,680 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:31:37,682 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:31:37,712 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:31:37,740 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 01:31:37,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:31:37,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2020-07-20 01:31:37,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490012286] [2020-07-20 01:31:37,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-20 01:31:37,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:31:37,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-20 01:31:37,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-07-20 01:31:37,742 INFO L87 Difference]: Start difference. First operand 199 states and 252 transitions. Second operand 18 states. [2020-07-20 01:31:39,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:31:39,231 INFO L93 Difference]: Finished difference Result 379 states and 496 transitions. [2020-07-20 01:31:39,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-20 01:31:39,232 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 57 [2020-07-20 01:31:39,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:31:39,238 INFO L225 Difference]: With dead ends: 379 [2020-07-20 01:31:39,238 INFO L226 Difference]: Without dead ends: 249 [2020-07-20 01:31:39,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=203, Invalid=789, Unknown=0, NotChecked=0, Total=992 [2020-07-20 01:31:39,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-07-20 01:31:39,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 196. [2020-07-20 01:31:39,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-07-20 01:31:39,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 248 transitions. [2020-07-20 01:31:39,289 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 248 transitions. Word has length 57 [2020-07-20 01:31:39,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:31:39,290 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 248 transitions. [2020-07-20 01:31:39,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-20 01:31:39,291 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 248 transitions. [2020-07-20 01:31:39,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 01:31:39,294 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:31:39,295 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:31:39,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-20 01:31:39,509 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:31:39,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:31:39,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1585084831, now seen corresponding path program 1 times [2020-07-20 01:31:39,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:31:39,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311227531] [2020-07-20 01:31:39,511 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3838b313 [2020-07-20 01:31:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:31:39,529 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:31:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 01:31:39,547 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 01:31:39,582 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 01:31:39,582 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 01:31:39,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-20 01:31:39,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:31:39 BoogieIcfgContainer [2020-07-20 01:31:39,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:31:39,638 INFO L168 Benchmark]: Toolchain (without parser) took 44131.02 ms. Allocated memory was 137.9 MB in the beginning and 386.9 MB in the end (delta: 249.0 MB). Free memory was 101.2 MB in the beginning and 295.0 MB in the end (delta: -193.8 MB). Peak memory consumption was 55.2 MB. Max. memory is 7.1 GB. [2020-07-20 01:31:39,638 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 01:31:39,639 INFO L168 Benchmark]: CACSL2BoogieTranslator took 732.97 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 166.7 MB in the end (delta: -65.7 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-07-20 01:31:39,640 INFO L168 Benchmark]: Boogie Preprocessor took 71.03 ms. Allocated memory is still 201.9 MB. Free memory was 166.7 MB in the beginning and 164.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-20 01:31:39,640 INFO L168 Benchmark]: RCFGBuilder took 727.59 ms. Allocated memory is still 201.9 MB. Free memory was 164.0 MB in the beginning and 112.7 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. [2020-07-20 01:31:39,641 INFO L168 Benchmark]: TraceAbstraction took 42593.67 ms. Allocated memory was 201.9 MB in the beginning and 386.9 MB in the end (delta: 185.1 MB). Free memory was 112.0 MB in the beginning and 295.0 MB in the end (delta: -183.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-07-20 01:31:39,644 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 732.97 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 166.7 MB in the end (delta: -65.7 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.03 ms. Allocated memory is still 201.9 MB. Free memory was 166.7 MB in the beginning and 164.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 727.59 ms. Allocated memory is still 201.9 MB. Free memory was 164.0 MB in the beginning and 112.7 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 42593.67 ms. Allocated memory was 201.9 MB in the beginning and 386.9 MB in the end (delta: 185.1 MB). Free memory was 112.0 MB in the beginning and 295.0 MB in the end (delta: -183.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 630]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L616] CALL, EXPR _get_nondet_int(2, 5) VAL [\old(from)=2, \old(until)=5] [L609] int len = from; VAL [\old(from)=2, \old(until)=5, from=2, len=2, until=5] [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() VAL [\old(from)=2, \old(until)=5, __VERIFIER_nondet_int()=0, from=2, len=2, len < until && __VERIFIER_nondet_int()=0, until=5] [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] return len; VAL [\old(from)=2, \old(until)=5, \result=2, from=2, len=2, until=5] [L616] RET, EXPR _get_nondet_int(2, 5) VAL [_get_nondet_int(2, 5)=2] [L616] const int len = _get_nondet_int(2, 5); [L617] SLL s = sll_create(len); VAL [len=2, s={2:0}] [L617] CALL, EXPR sll_create(len) VAL [\old(len)=2] [L564] SLL head = ((void *)0); VAL [\old(len)=2, head={0:0}, len=2] [L565] EXPR len-- VAL [\old(len)=2, head={0:0}, len=1, len--=2] [L565] COND TRUE len-- > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); VAL [\old(len)=2, head={0:0}, len=1, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L567] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=2, head={0:0}, len=1, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L570] new_head->next = head [L571] head = new_head VAL [\old(len)=2, head={-1:0}, len=1, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L565] EXPR len-- VAL [\old(len)=2, head={-1:0}, len=0, len--=1, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L565] COND TRUE len-- > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); VAL [\old(len)=2, head={-1:0}, len=0, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L567] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=2, head={-1:0}, len=0, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L570] new_head->next = head [L571] head = new_head VAL [\old(len)=2, head={-2:0}, len=0, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L565] EXPR len-- VAL [\old(len)=2, head={-2:0}, len=-1, len--=0, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L565] COND FALSE !(len-- > 0) [L573] return head; VAL [\old(len)=2, \result={-2:0}, head={-2:0}, len=-1, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L617] RET, EXPR sll_create(len) VAL [len=2, s={2:0}, sll_create(len)={-2:0}] [L617] SLL s = sll_create(len); [L618] CALL, EXPR _get_nondet_int(0, len - 1) VAL [\old(from)=0, \old(until)=1] [L609] int len = from; VAL [\old(from)=0, \old(until)=1, from=0, len=0, until=1] [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() VAL [\old(from)=0, \old(until)=1, __VERIFIER_nondet_int()=3, from=0, len=0, len < until && __VERIFIER_nondet_int()=1, until=1] [L610] COND TRUE len < until && __VERIFIER_nondet_int() [L611] len++ VAL [\old(from)=0, \old(until)=1, from=0, len=1, until=1] [L610] len < until && __VERIFIER_nondet_int() VAL [\old(from)=0, \old(until)=1, from=0, len=1, len < until && __VERIFIER_nondet_int()=0, until=1] [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] return len; VAL [\old(from)=0, \old(until)=1, \result=1, from=0, len=1, until=1] [L618] RET, EXPR _get_nondet_int(0, len - 1) VAL [_get_nondet_int(0, len - 1)=1, len=2, s={2:0}] [L618] const int k = _get_nondet_int(0, len - 1); [L619] int i = 0; VAL [i=0, k=1, len=2, s={2:0}] [L620] i < k && __VERIFIER_nondet_int() [L620] i < k && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, i=0, i < k && __VERIFIER_nondet_int()=0, k=1, len=2, s={2:0}] [L620] COND FALSE !(i < k && __VERIFIER_nondet_int()) [L625] EXPR \read(s) VAL [\read(s)={-2:0}, i=0, k=1, len=2, s={2:0}] [L625] CALL, EXPR sll_length(s) VAL [head={-2:0}] [L576] int len = 0; VAL [head={-2:0}, head={-2:0}, len=0] [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR head->next [L579] head = head->next [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR head->next [L579] head = head->next [L577] COND FALSE !(\read(head)) VAL [head={0:0}, head={-2:0}, len=2] [L581] return len; VAL [\result=2, head={-2:0}, head={0:0}, len=2] [L625] RET, EXPR sll_length(s) VAL [\read(s)={-2:0}, i=0, k=1, len=2, s={2:0}, sll_length(s)=2] [L625] COND TRUE k + len != sll_length(s) [L630] __VERIFIER_error() VAL [i=0, k=1, len=2, s={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 42.4s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 26.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 585 SDtfs, 911 SDslu, 4121 SDs, 0 SdLazy, 4810 SolverSat, 503 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 19.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 709 GetRequests, 432 SyntacticMatches, 10 SemanticMatches, 267 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1490 ImplicationChecksByTransitivity, 15.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=199occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 250 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 12.5s InterpolantComputationTime, 955 NumberOfCodeBlocks, 898 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 880 ConstructedInterpolants, 37 QuantifiedInterpolants, 320436 SizeOfPredicates, 66 NumberOfNonLiveVariables, 1506 ConjunctsInSsa, 205 ConjunctsInUnsatCore, 18 InterpolantComputations, 5 PerfectInterpolantSequences, 136/245 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...