/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 21:52:35,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 21:52:35,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 21:52:35,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 21:52:35,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 21:52:35,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 21:52:35,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 21:52:35,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 21:52:35,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 21:52:35,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 21:52:35,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 21:52:35,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 21:52:35,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 21:52:35,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 21:52:35,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 21:52:35,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 21:52:35,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 21:52:35,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 21:52:35,594 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 21:52:35,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 21:52:35,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 21:52:35,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 21:52:35,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 21:52:35,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 21:52:35,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 21:52:35,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 21:52:35,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 21:52:35,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 21:52:35,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 21:52:35,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 21:52:35,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 21:52:35,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 21:52:35,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 21:52:35,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 21:52:35,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 21:52:35,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 21:52:35,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 21:52:35,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 21:52:35,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 21:52:35,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 21:52:35,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 21:52:35,631 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 21:52:35,672 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 21:52:35,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 21:52:35,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 21:52:35,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 21:52:35,678 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 21:52:35,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 21:52:35,679 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 21:52:35,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 21:52:35,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 21:52:35,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 21:52:35,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 21:52:35,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 21:52:35,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 21:52:35,683 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 21:52:35,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 21:52:35,684 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 21:52:35,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 21:52:35,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 21:52:35,684 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 21:52:35,685 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 21:52:35,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 21:52:35,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 21:52:35,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 21:52:35,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 21:52:35,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 21:52:35,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 21:52:35,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:52:35,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 21:52:35,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 21:52:35,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 21:52:36,163 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 21:52:36,197 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 21:52:36,206 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 21:52:36,208 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 21:52:36,209 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 21:52:36,210 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-07-20 21:52:36,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c268e1e17/b847aebabb97483e9f3ad24e6132f705/FLAG90cb7adc1 [2020-07-20 21:52:37,225 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 21:52:37,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-07-20 21:52:37,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c268e1e17/b847aebabb97483e9f3ad24e6132f705/FLAG90cb7adc1 [2020-07-20 21:52:37,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c268e1e17/b847aebabb97483e9f3ad24e6132f705 [2020-07-20 21:52:37,322 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 21:52:37,327 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 21:52:37,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 21:52:37,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 21:52:37,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 21:52:37,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:52:37" (1/1) ... [2020-07-20 21:52:37,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@798c2c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:52:37, skipping insertion in model container [2020-07-20 21:52:37,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:52:37" (1/1) ... [2020-07-20 21:52:37,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 21:52:37,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 21:52:37,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:52:37,963 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 21:52:38,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 21:52:38,296 INFO L208 MainTranslator]: Completed translation [2020-07-20 21:52:38,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:52:38 WrapperNode [2020-07-20 21:52:38,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 21:52:38,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 21:52:38,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 21:52:38,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 21:52:38,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:52:38" (1/1) ... [2020-07-20 21:52:38,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:52:38" (1/1) ... [2020-07-20 21:52:38,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:52:38" (1/1) ... [2020-07-20 21:52:38,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:52:38" (1/1) ... [2020-07-20 21:52:38,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:52:38" (1/1) ... [2020-07-20 21:52:38,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:52:38" (1/1) ... [2020-07-20 21:52:38,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:52:38" (1/1) ... [2020-07-20 21:52:38,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 21:52:38,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 21:52:38,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 21:52:38,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 21:52:38,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:52:38" (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 21:52:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 21:52:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 21:52:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-20 21:52:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-07-20 21:52:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-07-20 21:52:38,486 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-07-20 21:52:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-07-20 21:52:38,487 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 21:52:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 21:52:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-20 21:52:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-07-20 21:52:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-07-20 21:52:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-07-20 21:52:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-07-20 21:52:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-07-20 21:52:38,488 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-07-20 21:52:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-07-20 21:52:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-07-20 21:52:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-07-20 21:52:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-07-20 21:52:38,489 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-07-20 21:52:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-07-20 21:52:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-07-20 21:52:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-07-20 21:52:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-07-20 21:52:38,490 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-07-20 21:52:38,491 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-07-20 21:52:38,491 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-07-20 21:52:38,491 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-07-20 21:52:38,491 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-07-20 21:52:38,491 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-07-20 21:52:38,492 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-07-20 21:52:38,492 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-07-20 21:52:38,492 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-07-20 21:52:38,492 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-07-20 21:52:38,492 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-07-20 21:52:38,493 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-07-20 21:52:38,493 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-07-20 21:52:38,493 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-20 21:52:38,493 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-07-20 21:52:38,493 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-07-20 21:52:38,493 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-07-20 21:52:38,494 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-07-20 21:52:38,494 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-07-20 21:52:38,494 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-07-20 21:52:38,494 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-07-20 21:52:38,494 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-07-20 21:52:38,494 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-07-20 21:52:38,495 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 21:52:38,495 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-07-20 21:52:38,495 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-07-20 21:52:38,495 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-07-20 21:52:38,495 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-07-20 21:52:38,496 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-07-20 21:52:38,496 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-07-20 21:52:38,496 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-07-20 21:52:38,496 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-07-20 21:52:38,496 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-07-20 21:52:38,496 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-07-20 21:52:38,497 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-07-20 21:52:38,497 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-07-20 21:52:38,497 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-07-20 21:52:38,497 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-07-20 21:52:38,497 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-07-20 21:52:38,498 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-20 21:52:38,498 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-07-20 21:52:38,498 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-07-20 21:52:38,498 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-07-20 21:52:38,498 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-07-20 21:52:38,499 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-07-20 21:52:38,499 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-07-20 21:52:38,499 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-07-20 21:52:38,499 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-07-20 21:52:38,499 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-07-20 21:52:38,500 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-07-20 21:52:38,500 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-07-20 21:52:38,500 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-07-20 21:52:38,500 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-07-20 21:52:38,500 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-07-20 21:52:38,500 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-07-20 21:52:38,501 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-07-20 21:52:38,501 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-07-20 21:52:38,501 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-07-20 21:52:38,501 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-07-20 21:52:38,501 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-07-20 21:52:38,501 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-07-20 21:52:38,502 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-07-20 21:52:38,502 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-07-20 21:52:38,502 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-07-20 21:52:38,502 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-07-20 21:52:38,503 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-07-20 21:52:38,503 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-07-20 21:52:38,503 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-07-20 21:52:38,503 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-07-20 21:52:38,503 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-07-20 21:52:38,503 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-07-20 21:52:38,504 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-07-20 21:52:38,504 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-07-20 21:52:38,504 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-07-20 21:52:38,504 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-07-20 21:52:38,504 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-07-20 21:52:38,504 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-07-20 21:52:38,504 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-07-20 21:52:38,505 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-07-20 21:52:38,505 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-07-20 21:52:38,505 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-07-20 21:52:38,505 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-07-20 21:52:38,505 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-07-20 21:52:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-07-20 21:52:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-07-20 21:52:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-07-20 21:52:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 21:52:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 21:52:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 21:52:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 21:52:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 21:52:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-07-20 21:52:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 21:52:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-07-20 21:52:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-07-20 21:52:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-07-20 21:52:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-07-20 21:52:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-07-20 21:52:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-07-20 21:52:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-07-20 21:52:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-07-20 21:52:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-07-20 21:52:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-07-20 21:52:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-07-20 21:52:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 21:52:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-07-20 21:52:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-07-20 21:52:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-07-20 21:52:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-07-20 21:52:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 21:52:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 21:52:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 21:52:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-20 21:52:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 21:52:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 21:52:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 21:52:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 21:52:39,224 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 21:52:39,225 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 21:52:39,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:52:39 BoogieIcfgContainer [2020-07-20 21:52:39,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 21:52:39,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 21:52:39,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 21:52:39,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 21:52:39,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:52:37" (1/3) ... [2020-07-20 21:52:39,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418e9c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:52:39, skipping insertion in model container [2020-07-20 21:52:39,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:52:38" (2/3) ... [2020-07-20 21:52:39,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418e9c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:52:39, skipping insertion in model container [2020-07-20 21:52:39,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:52:39" (3/3) ... [2020-07-20 21:52:39,252 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2020-07-20 21:52:39,272 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 21:52:39,287 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 21:52:39,315 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 21:52:39,349 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 21:52:39,350 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 21:52:39,350 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 21:52:39,350 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 21:52:39,350 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 21:52:39,350 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 21:52:39,350 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 21:52:39,351 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 21:52:39,382 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-07-20 21:52:39,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 21:52:39,392 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:52:39,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 21:52:39,394 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:52:39,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:52:39,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1135050545, now seen corresponding path program 1 times [2020-07-20 21:52:39,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:52:39,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341603224] [2020-07-20 21:52:39,417 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:52:39,877 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:52:39,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:52:39,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 21:52:39,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:52:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:52:40,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:52:40,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341603224] [2020-07-20 21:52:40,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:52:40,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 21:52:40,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401857082] [2020-07-20 21:52:40,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 21:52:40,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:52:40,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 21:52:40,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 21:52:40,156 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 6 states. [2020-07-20 21:52:40,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:52:40,361 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2020-07-20 21:52:40,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 21:52:40,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-07-20 21:52:40,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:52:40,380 INFO L225 Difference]: With dead ends: 84 [2020-07-20 21:52:40,381 INFO L226 Difference]: Without dead ends: 39 [2020-07-20 21:52:40,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 21:52:40,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-20 21:52:40,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-07-20 21:52:40,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-20 21:52:40,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-07-20 21:52:40,463 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 13 [2020-07-20 21:52:40,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:52:40,464 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-07-20 21:52:40,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 21:52:40,465 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-07-20 21:52:40,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 21:52:40,469 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:52:40,469 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-20 21:52:40,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:52:40,686 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:52:40,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:52:40,687 INFO L82 PathProgramCache]: Analyzing trace with hash -925661111, now seen corresponding path program 1 times [2020-07-20 21:52:40,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:52:40,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332616467] [2020-07-20 21:52:40,688 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:52:40,847 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:52:40,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:52:40,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 33 conjunts are in the unsatisfiable core [2020-07-20 21:52:40,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:52:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-20 21:52:41,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:52:41,303 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-20 21:52:41,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332616467] [2020-07-20 21:52:41,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:52:41,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 11 [2020-07-20 21:52:41,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264223582] [2020-07-20 21:52:41,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 21:52:41,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:52:41,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 21:52:41,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-20 21:52:41,311 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 11 states. [2020-07-20 21:52:41,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:52:41,389 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2020-07-20 21:52:41,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 21:52:41,391 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-07-20 21:52:41,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:52:41,397 INFO L225 Difference]: With dead ends: 66 [2020-07-20 21:52:41,397 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 21:52:41,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-20 21:52:41,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 21:52:41,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-20 21:52:41,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 21:52:41,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-07-20 21:52:41,423 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 38 [2020-07-20 21:52:41,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:52:41,423 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-07-20 21:52:41,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 21:52:41,424 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-07-20 21:52:41,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 21:52:41,426 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:52:41,426 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-20 21:52:41,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:52:41,642 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:52:41,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:52:41,644 INFO L82 PathProgramCache]: Analyzing trace with hash -894641304, now seen corresponding path program 1 times [2020-07-20 21:52:41,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:52:41,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259417645] [2020-07-20 21:52:41,646 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:52:41,863 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:52:41,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:52:41,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-20 21:52:41,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:52:41,966 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-20 21:52:41,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:52:41,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259417645] [2020-07-20 21:52:41,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:52:41,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 21:52:41,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536479708] [2020-07-20 21:52:41,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 21:52:41,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:52:41,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 21:52:41,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 21:52:41,972 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 7 states. [2020-07-20 21:52:42,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:52:42,009 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2020-07-20 21:52:42,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 21:52:42,010 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-07-20 21:52:42,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:52:42,012 INFO L225 Difference]: With dead ends: 63 [2020-07-20 21:52:42,012 INFO L226 Difference]: Without dead ends: 39 [2020-07-20 21:52:42,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 21:52:42,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-20 21:52:42,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-07-20 21:52:42,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-20 21:52:42,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-07-20 21:52:42,023 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 38 [2020-07-20 21:52:42,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:52:42,025 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-07-20 21:52:42,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 21:52:42,025 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-07-20 21:52:42,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 21:52:42,027 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:52:42,027 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-20 21:52:42,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:52:42,241 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:52:42,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:52:42,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1188044311, now seen corresponding path program 1 times [2020-07-20 21:52:42,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:52:42,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010356804] [2020-07-20 21:52:42,243 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:52:42,412 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 21:52:42,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:52:42,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-20 21:52:42,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:52:42,707 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-20 21:52:42,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:52:42,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010356804] [2020-07-20 21:52:42,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:52:42,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-20 21:52:42,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067524826] [2020-07-20 21:52:42,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 21:52:42,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:52:42,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 21:52:42,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-07-20 21:52:42,714 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 13 states. [2020-07-20 21:52:43,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:52:43,539 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2020-07-20 21:52:43,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 21:52:43,540 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-07-20 21:52:43,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:52:43,550 INFO L225 Difference]: With dead ends: 71 [2020-07-20 21:52:43,553 INFO L226 Difference]: Without dead ends: 60 [2020-07-20 21:52:43,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2020-07-20 21:52:43,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-20 21:52:43,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2020-07-20 21:52:43,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-20 21:52:43,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-07-20 21:52:43,601 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 38 [2020-07-20 21:52:43,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:52:43,606 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-07-20 21:52:43,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 21:52:43,607 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-07-20 21:52:43,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 21:52:43,612 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:52:43,613 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-07-20 21:52:43,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:52:43,830 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:52:43,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:52:43,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1335597358, now seen corresponding path program 1 times [2020-07-20 21:52:43,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:52:43,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7008975] [2020-07-20 21:52:43,832 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:52:44,003 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:52:44,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:52:44,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 21:52:44,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:52:44,333 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:52:44,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:52:45,090 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:52:45,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7008975] [2020-07-20 21:52:45,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:52:45,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 22 [2020-07-20 21:52:45,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294973382] [2020-07-20 21:52:45,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-20 21:52:45,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:52:45,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-20 21:52:45,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2020-07-20 21:52:45,100 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 22 states. [2020-07-20 21:52:46,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:52:46,202 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-07-20 21:52:46,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 21:52:46,203 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 45 [2020-07-20 21:52:46,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:52:46,205 INFO L225 Difference]: With dead ends: 62 [2020-07-20 21:52:46,205 INFO L226 Difference]: Without dead ends: 55 [2020-07-20 21:52:46,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 54 SyntacticMatches, 15 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2020-07-20 21:52:46,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-20 21:52:46,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-07-20 21:52:46,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-20 21:52:46,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-07-20 21:52:46,220 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 45 [2020-07-20 21:52:46,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:52:46,221 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-07-20 21:52:46,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-20 21:52:46,221 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-07-20 21:52:46,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 21:52:46,223 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:52:46,223 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-07-20 21:52:46,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:52:46,427 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:52:46,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:52:46,428 INFO L82 PathProgramCache]: Analyzing trace with hash 526250732, now seen corresponding path program 1 times [2020-07-20 21:52:46,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:52:46,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18882427] [2020-07-20 21:52:46,430 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:52:46,580 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 21:52:46,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:52:46,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 21:52:46,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:52:46,854 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:52:46,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:52:47,328 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:52:47,333 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 21:52:47,435 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 21:52:47,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18882427] [2020-07-20 21:52:47,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:52:47,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2020-07-20 21:52:47,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201358200] [2020-07-20 21:52:47,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-20 21:52:47,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:52:47,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-20 21:52:47,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2020-07-20 21:52:47,440 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 24 states. [2020-07-20 21:52:48,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:52:48,621 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-07-20 21:52:48,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-20 21:52:48,622 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 45 [2020-07-20 21:52:48,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:52:48,624 INFO L225 Difference]: With dead ends: 66 [2020-07-20 21:52:48,624 INFO L226 Difference]: Without dead ends: 63 [2020-07-20 21:52:48,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=225, Invalid=965, Unknown=0, NotChecked=0, Total=1190 [2020-07-20 21:52:48,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-20 21:52:48,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2020-07-20 21:52:48,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-20 21:52:48,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-07-20 21:52:48,639 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 45 [2020-07-20 21:52:48,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:52:48,640 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-07-20 21:52:48,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-20 21:52:48,640 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-07-20 21:52:48,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 21:52:48,642 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:52:48,643 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 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] [2020-07-20 21:52:48,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:52:48,860 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:52:48,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:52:48,861 INFO L82 PathProgramCache]: Analyzing trace with hash -2119488644, now seen corresponding path program 1 times [2020-07-20 21:52:48,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:52:48,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620279690] [2020-07-20 21:52:48,862 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:52:49,006 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:52:49,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:52:49,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 45 conjunts are in the unsatisfiable core [2020-07-20 21:52:49,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:52:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-20 21:52:49,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:52:49,482 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-20 21:52:49,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620279690] [2020-07-20 21:52:49,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:52:49,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 13 [2020-07-20 21:52:49,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948763916] [2020-07-20 21:52:49,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 21:52:49,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:52:49,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 21:52:49,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-07-20 21:52:49,485 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 13 states. [2020-07-20 21:52:50,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:52:50,036 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2020-07-20 21:52:50,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-20 21:52:50,037 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-07-20 21:52:50,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:52:50,040 INFO L225 Difference]: With dead ends: 70 [2020-07-20 21:52:50,040 INFO L226 Difference]: Without dead ends: 62 [2020-07-20 21:52:50,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2020-07-20 21:52:50,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-07-20 21:52:50,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2020-07-20 21:52:50,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-20 21:52:50,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-07-20 21:52:50,063 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 57 [2020-07-20 21:52:50,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:52:50,067 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-07-20 21:52:50,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 21:52:50,068 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-07-20 21:52:50,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 21:52:50,072 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:52:50,073 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 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] [2020-07-20 21:52:50,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:52:50,277 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:52:50,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:52:50,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1366132026, now seen corresponding path program 1 times [2020-07-20 21:52:50,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:52:50,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347503151] [2020-07-20 21:52:50,279 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:52:50,420 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:52:50,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:52:50,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 53 conjunts are in the unsatisfiable core [2020-07-20 21:52:50,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:52:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-20 21:52:50,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 21:52:50,758 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-20 21:52:50,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347503151] [2020-07-20 21:52:50,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 21:52:50,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-07-20 21:52:50,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328701400] [2020-07-20 21:52:50,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 21:52:50,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:52:50,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 21:52:50,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-07-20 21:52:50,762 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 11 states. [2020-07-20 21:52:51,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:52:51,287 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2020-07-20 21:52:51,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 21:52:51,288 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-07-20 21:52:51,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:52:51,291 INFO L225 Difference]: With dead ends: 67 [2020-07-20 21:52:51,291 INFO L226 Difference]: Without dead ends: 60 [2020-07-20 21:52:51,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-07-20 21:52:51,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-20 21:52:51,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-07-20 21:52:51,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-20 21:52:51,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2020-07-20 21:52:51,329 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 57 [2020-07-20 21:52:51,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:52:51,330 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2020-07-20 21:52:51,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 21:52:51,330 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2020-07-20 21:52:51,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 21:52:51,336 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:52:51,337 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 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] [2020-07-20 21:52:51,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:52:51,540 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:52:51,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:52:51,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1588672638, now seen corresponding path program 1 times [2020-07-20 21:52:51,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:52:51,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87977231] [2020-07-20 21:52:51,543 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:52:51,680 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:52:51,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:52:51,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-20 21:52:51,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:52:51,784 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 21:52:51,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:52:51,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87977231] [2020-07-20 21:52:51,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:52:51,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 21:52:51,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471030826] [2020-07-20 21:52:51,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 21:52:51,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:52:51,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 21:52:51,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-20 21:52:51,792 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand 7 states. [2020-07-20 21:52:51,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:52:51,989 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-07-20 21:52:51,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 21:52:51,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-07-20 21:52:51,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:52:51,991 INFO L225 Difference]: With dead ends: 65 [2020-07-20 21:52:51,991 INFO L226 Difference]: Without dead ends: 47 [2020-07-20 21:52:51,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-07-20 21:52:51,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-20 21:52:52,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-07-20 21:52:52,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-20 21:52:52,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-07-20 21:52:52,019 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 57 [2020-07-20 21:52:52,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:52:52,020 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-07-20 21:52:52,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 21:52:52,020 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-07-20 21:52:52,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 21:52:52,022 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 21:52:52,022 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 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] [2020-07-20 21:52:52,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:52:52,237 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 21:52:52,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 21:52:52,238 INFO L82 PathProgramCache]: Analyzing trace with hash 548483576, now seen corresponding path program 1 times [2020-07-20 21:52:52,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 21:52:52,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984206042] [2020-07-20 21:52:52,239 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:52:52,371 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 21:52:52,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 21:52:52,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 29 conjunts are in the unsatisfiable core [2020-07-20 21:52:52,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 21:52:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 21:52:52,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 21:52:52,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984206042] [2020-07-20 21:52:52,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 21:52:52,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 21:52:52,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945439448] [2020-07-20 21:52:52,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 21:52:52,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 21:52:52,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 21:52:52,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 21:52:52,435 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 7 states. [2020-07-20 21:52:52,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 21:52:52,548 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-07-20 21:52:52,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 21:52:52,548 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-07-20 21:52:52,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 21:52:52,549 INFO L225 Difference]: With dead ends: 47 [2020-07-20 21:52:52,549 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 21:52:52,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-07-20 21:52:52,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 21:52:52,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 21:52:52,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 21:52:52,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 21:52:52,553 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-07-20 21:52:52,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 21:52:52,554 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 21:52:52,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 21:52:52,554 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 21:52:52,554 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 21:52:52,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 21:52:52,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 21:52:53,422 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 13 [2020-07-20 21:52:53,598 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-07-20 21:52:54,201 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2020-07-20 21:52:54,318 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-07-20 21:52:54,384 INFO L268 CegarLoopResult]: For program point my_mallocFINAL(lines 878 880) no Hoare annotation was computed. [2020-07-20 21:52:54,385 INFO L264 CegarLoopResult]: At program point L879(line 879) the Hoare annotation is: (let ((.cse0 (not (<= 8 |my_malloc_#in~size|)))) (and (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (<= |old(~guard_malloc_counter~0.offset)| ~guard_malloc_counter~0.offset) .cse0 (not (= 0 ~elem~0.offset)) (not (= 0 ~elem~0.base))) (or .cse0 (<= 8 my_malloc_~size)))) [2020-07-20 21:52:54,385 INFO L268 CegarLoopResult]: For program point L879-1(line 879) no Hoare annotation was computed. [2020-07-20 21:52:54,385 INFO L264 CegarLoopResult]: At program point my_mallocENTRY(lines 878 880) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (<= |old(~guard_malloc_counter~0.offset)| ~guard_malloc_counter~0.offset) (not (<= 8 |my_malloc_#in~size|)) (not (= 0 ~elem~0.offset)) (not (= 0 ~elem~0.base))) [2020-07-20 21:52:54,386 INFO L268 CegarLoopResult]: For program point my_mallocEXIT(lines 878 880) no Hoare annotation was computed. [2020-07-20 21:52:54,386 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 21:52:54,386 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= |old(~guard_malloc_counter~0.offset)| ~guard_malloc_counter~0.offset) (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) [2020-07-20 21:52:54,386 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 21:52:54,386 INFO L268 CegarLoopResult]: For program point L896(lines 896 897) no Hoare annotation was computed. [2020-07-20 21:52:54,386 INFO L268 CegarLoopResult]: For program point L896-2(lines 895 898) no Hoare annotation was computed. [2020-07-20 21:52:54,386 INFO L268 CegarLoopResult]: For program point list_delEXIT(lines 895 898) no Hoare annotation was computed. [2020-07-20 21:52:54,387 INFO L264 CegarLoopResult]: At program point list_delENTRY(lines 895 898) the Hoare annotation is: (and (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) [2020-07-20 21:52:54,387 INFO L264 CegarLoopResult]: At program point list_addENTRY(lines 889 893) the Hoare annotation is: (or (and (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) (and (= |old(~elem~0.offset)| |list_add_#in~new.offset|) (= |old(~elem~0.base)| |list_add_#in~new.base|))) [2020-07-20 21:52:54,387 INFO L268 CegarLoopResult]: For program point L891(lines 891 892) no Hoare annotation was computed. [2020-07-20 21:52:54,387 INFO L268 CegarLoopResult]: For program point L890(line 890) no Hoare annotation was computed. [2020-07-20 21:52:54,387 INFO L268 CegarLoopResult]: For program point L891-2(lines 889 893) no Hoare annotation was computed. [2020-07-20 21:52:54,387 INFO L264 CegarLoopResult]: At program point L890-2(line 890) the Hoare annotation is: (and (= |old(~elem~0.offset)| |list_add_#in~new.offset|) (= |old(~elem~0.base)| |list_add_#in~new.base|)) [2020-07-20 21:52:54,388 INFO L268 CegarLoopResult]: For program point L890-3(line 890) no Hoare annotation was computed. [2020-07-20 21:52:54,388 INFO L268 CegarLoopResult]: For program point list_addEXIT(lines 889 893) no Hoare annotation was computed. [2020-07-20 21:52:54,388 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-07-20 21:52:54,388 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-20 21:52:54,388 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-20 21:52:54,388 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-07-20 21:52:54,389 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 21:52:54,389 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= 0 ~elem~0.base) (= 0 ~elem~0.offset) (<= 0 ~guard_malloc_counter~0.offset)) [2020-07-20 21:52:54,389 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 21:52:54,389 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 21:52:54,389 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 902 917) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (<= |old(~guard_malloc_counter~0.offset)| ~guard_malloc_counter~0.offset) (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) (not (= |old(~elem~0.offset)| 0)) (not (= 0 |old(~elem~0.base)|))) [2020-07-20 21:52:54,389 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 902 917) no Hoare annotation was computed. [2020-07-20 21:52:54,390 INFO L264 CegarLoopResult]: At program point L909(line 909) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset))) (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (not (= |old(~elem~0.offset)| 0)) (and (or (not (= main_~dev2~0.base ~elem~0.base)) (not (= main_~dev2~0.offset ~elem~0.offset))) .cse0 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (not (= 0 |old(~elem~0.base)|)) (and .cse0 (<= 2 main_~dev2~0.offset) (<= ~elem~0.offset 0)))) [2020-07-20 21:52:54,390 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 902 917) no Hoare annotation was computed. [2020-07-20 21:52:54,390 INFO L264 CegarLoopResult]: At program point L908(line 908) the Hoare annotation is: (let ((.cse1 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse2 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset))) (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and .cse0 .cse1 .cse2 (or (not (= main_~dev2~0.base 0)) (not (= 0 main_~dev2~0.offset)))) (not (= |old(~elem~0.offset)| 0)) (and (or (not (= main_~dev2~0.base ~elem~0.base)) (not (= main_~dev2~0.offset ~elem~0.offset))) .cse0 .cse1 .cse2) (not (= 0 |old(~elem~0.base)|)) (and .cse0 (<= 2 main_~dev2~0.offset) (<= ~elem~0.offset 0)))) [2020-07-20 21:52:54,391 INFO L264 CegarLoopResult]: At program point L907(line 907) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) (<= 1 main_~dev1~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (= 0 ~elem~0.offset) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) (not (= |old(~elem~0.offset)| 0)) (not (= 0 |old(~elem~0.base)|))) [2020-07-20 21:52:54,391 INFO L268 CegarLoopResult]: For program point L906(lines 906 915) no Hoare annotation was computed. [2020-07-20 21:52:54,391 INFO L264 CegarLoopResult]: At program point L907-1(line 907) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse1 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse2 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset))) (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and .cse0 (= main_~dev2~0.base ~elem~0.base) .cse1 .cse2 (or (not (= main_~dev2~0.base 0)) (not (= 0 main_~dev2~0.offset))) (= main_~dev2~0.offset ~elem~0.offset)) (and .cse0 (<= 1 main_~dev1~0.offset) .cse1 (= 0 ~elem~0.offset) .cse2 (= |old(~elem~0.base)| ~elem~0.base)) (not (= |old(~elem~0.offset)| 0)) (not (= 0 |old(~elem~0.base)|)))) [2020-07-20 21:52:54,391 INFO L264 CegarLoopResult]: At program point L905(line 905) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (= 0 main_~dev1~0.base) (= 0 main_~dev1~0.offset)) (not (= |old(~elem~0.offset)| 0)) (not (= 0 |old(~elem~0.base)|)) (and (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) (<= 1 main_~dev1~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base))) [2020-07-20 21:52:54,391 INFO L268 CegarLoopResult]: For program point L906-1(lines 906 915) no Hoare annotation was computed. [2020-07-20 21:52:54,392 INFO L264 CegarLoopResult]: At program point L904(line 904) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (<= |old(~guard_malloc_counter~0.offset)| ~guard_malloc_counter~0.offset) (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) (not (= |old(~elem~0.offset)| 0)) (not (= 0 |old(~elem~0.base)|))) [2020-07-20 21:52:54,392 INFO L268 CegarLoopResult]: For program point L905-1(line 905) no Hoare annotation was computed. [2020-07-20 21:52:54,392 INFO L268 CegarLoopResult]: For program point L904-1(line 904) no Hoare annotation was computed. [2020-07-20 21:52:54,392 INFO L264 CegarLoopResult]: At program point __getMemoryENTRY(lines 869 876) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (<= |old(~guard_malloc_counter~0.offset)| ~guard_malloc_counter~0.offset) (not (= 0 ~elem~0.offset)) (not (= 0 ~elem~0.base)) (not (<= 8 |__getMemory_#in~size|))) [2020-07-20 21:52:54,392 INFO L268 CegarLoopResult]: For program point __getMemoryEXIT(lines 869 876) no Hoare annotation was computed. [2020-07-20 21:52:54,392 INFO L268 CegarLoopResult]: For program point __getMemoryFINAL(lines 869 876) no Hoare annotation was computed. [2020-07-20 21:52:54,393 INFO L268 CegarLoopResult]: For program point L873(lines 873 874) no Hoare annotation was computed. [2020-07-20 21:52:54,393 INFO L268 CegarLoopResult]: For program point L871(line 871) no Hoare annotation was computed. [2020-07-20 21:52:54,393 INFO L264 CegarLoopResult]: At program point L871-2(line 871) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (not (= 0 ~elem~0.offset)) (not (= 0 ~elem~0.base)) (not (<= 8 |__getMemory_#in~size|))) [2020-07-20 21:52:54,393 INFO L268 CegarLoopResult]: For program point L871-3(line 871) no Hoare annotation was computed. [2020-07-20 21:52:54,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 09:52:54 BoogieIcfgContainer [2020-07-20 21:52:54,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 21:52:54,407 INFO L168 Benchmark]: Toolchain (without parser) took 17082.81 ms. Allocated memory was 137.4 MB in the beginning and 364.9 MB in the end (delta: 227.5 MB). Free memory was 100.8 MB in the beginning and 221.8 MB in the end (delta: -121.0 MB). Peak memory consumption was 216.7 MB. Max. memory is 7.1 GB. [2020-07-20 21:52:54,408 INFO L168 Benchmark]: CDTParser took 1.00 ms. Allocated memory is still 137.4 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 21:52:54,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 969.69 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 100.4 MB in the beginning and 165.6 MB in the end (delta: -65.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2020-07-20 21:52:54,410 INFO L168 Benchmark]: Boogie Preprocessor took 89.54 ms. Allocated memory is still 199.8 MB. Free memory was 165.6 MB in the beginning and 162.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-20 21:52:54,411 INFO L168 Benchmark]: RCFGBuilder took 842.72 ms. Allocated memory is still 199.8 MB. Free memory was 162.8 MB in the beginning and 116.5 MB in the end (delta: 46.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 7.1 GB. [2020-07-20 21:52:54,412 INFO L168 Benchmark]: TraceAbstraction took 15168.88 ms. Allocated memory was 199.8 MB in the beginning and 364.9 MB in the end (delta: 165.2 MB). Free memory was 116.5 MB in the beginning and 221.8 MB in the end (delta: -105.3 MB). Peak memory consumption was 170.0 MB. Max. memory is 7.1 GB. [2020-07-20 21:52:54,417 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.00 ms. Allocated memory is still 137.4 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 969.69 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 100.4 MB in the beginning and 165.6 MB in the end (delta: -65.2 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.54 ms. Allocated memory is still 199.8 MB. Free memory was 165.6 MB in the beginning and 162.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 842.72 ms. Allocated memory is still 199.8 MB. Free memory was 162.8 MB in the beginning and 116.5 MB in the end (delta: 46.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15168.88 ms. Allocated memory was 199.8 MB in the beginning and 364.9 MB in the end (delta: 165.2 MB). Free memory was 116.5 MB in the beginning and 221.8 MB in the end (delta: -105.3 MB). Peak memory consumption was 170.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.4s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 391 SDtfs, 313 SDslu, 1534 SDs, 0 SdLazy, 2436 SolverSat, 244 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 732 GetRequests, 562 SyntacticMatches, 16 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=7, 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, 23 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 74 PreInvPairs, 87 NumberOfFragments, 441 HoareAnnotationTreeSize, 74 FomulaSimplifications, 593 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 18 FomulaSimplificationsInter, 1342 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 445 NumberOfCodeBlocks, 278 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 672 ConstructedInterpolants, 0 QuantifiedInterpolants, 105662 SizeOfPredicates, 78 NumberOfNonLiveVariables, 1912 ConjunctsInSsa, 283 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 148/222 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 correct! Received shutdown request...