/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --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/heap-manipulation/dll_of_dll-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:50:23,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:50:23,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:50:23,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:50:23,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:50:23,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:50:23,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:50:23,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:50:23,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:50:23,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:50:23,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:50:23,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:50:23,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:50:23,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:50:23,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:50:23,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:50:23,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:50:23,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:50:23,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:50:23,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:50:23,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:50:23,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:50:23,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:50:23,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:50:23,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 13:50:23,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 13:50:23,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 13:50:23,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 13:50:23,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 13:50:23,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 13:50:23,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 13:50:23,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 13:50:23,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 13:50:23,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 13:50:23,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 13:50:23,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 13:50:23,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 13:50:23,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 13:50:23,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:50:23,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:50:23,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:50:23,393 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 13:50:23,408 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:50:23,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:50:23,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:50:23,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:50:23,410 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:50:23,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:50:23,411 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:50:23,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:50:23,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:50:23,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:50:23,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:50:23,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:50:23,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:50:23,412 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:50:23,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:50:23,412 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:50:23,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:50:23,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:50:23,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:50:23,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:50:23,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:50:23,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:50:23,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:50:23,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:50:23,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:50:23,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:50:23,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:50:23,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:50:23,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:50:23,415 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS 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 13:50:23,714 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:50:23,729 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:50:23,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:50:23,734 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:50:23,734 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:50:23,735 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-07-20 13:50:23,807 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab833f8c3/17af1198239b40e9a3977b3ebc5efe05/FLAGde890b873 [2020-07-20 13:50:24,424 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:50:24,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-07-20 13:50:24,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab833f8c3/17af1198239b40e9a3977b3ebc5efe05/FLAGde890b873 [2020-07-20 13:50:24,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab833f8c3/17af1198239b40e9a3977b3ebc5efe05 [2020-07-20 13:50:24,704 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:50:24,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:50:24,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:50:24,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:50:24,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:50:24,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:50:24" (1/1) ... [2020-07-20 13:50:24,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10bff91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:24, skipping insertion in model container [2020-07-20 13:50:24,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:50:24" (1/1) ... [2020-07-20 13:50:24,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:50:24,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:50:25,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:50:25,293 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:50:25,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:50:25,477 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:50:25,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:25 WrapperNode [2020-07-20 13:50:25,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:50:25,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:50:25,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:50:25,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:50:25,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:25" (1/1) ... [2020-07-20 13:50:25,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:25" (1/1) ... [2020-07-20 13:50:25,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:25" (1/1) ... [2020-07-20 13:50:25,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:25" (1/1) ... [2020-07-20 13:50:25,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:25" (1/1) ... [2020-07-20 13:50:25,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:25" (1/1) ... [2020-07-20 13:50:25,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:25" (1/1) ... [2020-07-20 13:50:25,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:50:25,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:50:25,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:50:25,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:50:25,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:25" (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 13:50:25,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:50:25,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:50:25,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-07-20 13:50:25,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-20 13:50:25,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-20 13:50:25,640 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-07-20 13:50:25,640 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-07-20 13:50:25,641 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-07-20 13:50:25,641 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-07-20 13:50:25,641 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-07-20 13:50:25,641 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-07-20 13:50:25,641 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-07-20 13:50:25,642 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-07-20 13:50:25,642 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-07-20 13:50:25,642 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-07-20 13:50:25,642 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-07-20 13:50:25,642 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-07-20 13:50:25,643 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-07-20 13:50:25,643 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-07-20 13:50:25,643 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-07-20 13:50:25,643 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-07-20 13:50:25,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:50:25,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:50:25,644 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 13:50:25,644 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 13:50:25,644 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 13:50:25,645 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 13:50:25,645 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 13:50:25,645 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 13:50:25,645 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 13:50:25,645 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 13:50:25,645 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 13:50:25,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 13:50:25,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 13:50:25,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 13:50:25,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 13:50:25,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 13:50:25,646 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 13:50:25,647 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 13:50:25,647 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-20 13:50:25,647 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-20 13:50:25,647 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 13:50:25,648 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 13:50:25,648 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 13:50:25,648 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 13:50:25,648 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 13:50:25,648 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 13:50:25,648 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 13:50:25,648 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 13:50:25,649 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 13:50:25,649 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 13:50:25,649 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 13:50:25,649 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 13:50:25,649 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 13:50:25,649 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 13:50:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 13:50:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 13:50:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 13:50:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 13:50:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 13:50:25,650 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 13:50:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 13:50:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 13:50:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 13:50:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 13:50:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 13:50:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 13:50:25,651 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 13:50:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 13:50:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 13:50:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 13:50:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 13:50:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 13:50:25,652 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 13:50:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 13:50:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 13:50:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 13:50:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 13:50:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 13:50:25,653 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 13:50:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 13:50:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 13:50:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 13:50:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-20 13:50:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 13:50:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 13:50:25,654 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-20 13:50:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 13:50:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 13:50:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-20 13:50:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 13:50:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 13:50:25,655 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 13:50:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 13:50:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 13:50:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 13:50:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 13:50:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 13:50:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 13:50:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 13:50:25,656 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 13:50:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 13:50:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 13:50:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 13:50:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 13:50:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 13:50:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 13:50:25,657 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 13:50:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 13:50:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 13:50:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 13:50:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 13:50:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 13:50:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 13:50:25,658 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 13:50:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 13:50:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 13:50:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 13:50:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 13:50:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 13:50:25,659 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 13:50:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 13:50:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 13:50:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 13:50:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 13:50:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 13:50:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 13:50:25,660 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 13:50:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 13:50:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-07-20 13:50:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-07-20 13:50:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 13:50:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 13:50:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-07-20 13:50:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-07-20 13:50:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 13:50:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-07-20 13:50:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:50:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-07-20 13:50:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-20 13:50:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:50:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-07-20 13:50:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-07-20 13:50:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-07-20 13:50:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-07-20 13:50:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-07-20 13:50:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-07-20 13:50:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-07-20 13:50:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-07-20 13:50:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-07-20 13:50:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-07-20 13:50:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-07-20 13:50:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:50:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:50:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:50:26,538 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:50:26,539 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-07-20 13:50:26,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:50:26 BoogieIcfgContainer [2020-07-20 13:50:26,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:50:26,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:50:26,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:50:26,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:50:26,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:50:24" (1/3) ... [2020-07-20 13:50:26,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa49bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:50:26, skipping insertion in model container [2020-07-20 13:50:26,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:50:25" (2/3) ... [2020-07-20 13:50:26,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa49bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:50:26, skipping insertion in model container [2020-07-20 13:50:26,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:50:26" (3/3) ... [2020-07-20 13:50:26,553 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-07-20 13:50:26,564 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:50:26,573 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:50:26,588 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:50:26,615 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:50:26,615 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:50:26,615 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:50:26,615 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:50:26,616 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:50:26,616 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:50:26,616 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:50:26,616 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:50:26,639 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-07-20 13:50:26,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-07-20 13:50:26,649 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:50:26,650 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1] [2020-07-20 13:50:26,651 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:50:26,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:50:26,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-07-20 13:50:26,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:50:26,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768234151] [2020-07-20 13:50:26,667 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 13:50:27,004 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 13:50:27,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:50:27,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 13:50:27,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:50:27,151 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-07-20 13:50:27,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:50:27,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768234151] [2020-07-20 13:50:27,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:50:27,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 13:50:27,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231383372] [2020-07-20 13:50:27,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 13:50:27,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:50:27,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 13:50:27,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:50:27,182 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 5 states. [2020-07-20 13:50:27,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:50:27,356 INFO L93 Difference]: Finished difference Result 342 states and 541 transitions. [2020-07-20 13:50:27,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 13:50:27,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2020-07-20 13:50:27,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:50:27,373 INFO L225 Difference]: With dead ends: 342 [2020-07-20 13:50:27,373 INFO L226 Difference]: Without dead ends: 168 [2020-07-20 13:50:27,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:50:27,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-07-20 13:50:27,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2020-07-20 13:50:27,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-07-20 13:50:27,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-07-20 13:50:27,450 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 59 [2020-07-20 13:50:27,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:50:27,451 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-07-20 13:50:27,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 13:50:27,451 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-07-20 13:50:27,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-07-20 13:50:27,458 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:50:27,459 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2020-07-20 13:50:27,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:50:27,675 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:50:27,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:50:27,676 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-07-20 13:50:27,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:50:27,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652134657] [2020-07-20 13:50:27,679 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 13:50:41,785 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:50:41,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:50:41,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 46 conjunts are in the unsatisfiable core [2020-07-20 13:50:41,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:50:42,001 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:50:42,002 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 47 [2020-07-20 13:50:42,003 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:50:42,032 INFO L624 ElimStorePlain]: treesize reduction 20, result has 60.8 percent of original size [2020-07-20 13:50:42,034 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:50:42,035 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:8 [2020-07-20 13:50:42,078 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2020-07-20 13:50:42,079 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:50:42,081 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:50:42,081 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:50:42,082 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:4 [2020-07-20 13:50:42,274 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-07-20 13:50:42,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:50:43,222 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 74 [2020-07-20 13:50:43,224 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-20 13:50:43,287 INFO L624 ElimStorePlain]: treesize reduction 38, result has 47.2 percent of original size [2020-07-20 13:50:43,290 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-07-20 13:50:43,290 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:40, output treesize:7 [2020-07-20 13:50:43,301 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 174 [2020-07-20 13:50:43,303 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-20 13:50:43,443 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 25 [2020-07-20 13:50:43,444 INFO L624 ElimStorePlain]: treesize reduction 127, result has 21.6 percent of original size [2020-07-20 13:50:43,445 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-07-20 13:50:43,446 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:36, output treesize:20 [2020-07-20 13:50:43,578 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 13:50:43,770 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-07-20 13:50:43,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652134657] [2020-07-20 13:50:43,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 13:50:43,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-07-20 13:50:43,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831018260] [2020-07-20 13:50:43,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-20 13:50:43,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:50:43,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-20 13:50:43,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-07-20 13:50:43,775 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 20 states. [2020-07-20 13:50:44,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:50:44,571 INFO L93 Difference]: Finished difference Result 299 states and 361 transitions. [2020-07-20 13:50:44,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-20 13:50:44,575 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 154 [2020-07-20 13:50:44,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:50:44,579 INFO L225 Difference]: With dead ends: 299 [2020-07-20 13:50:44,579 INFO L226 Difference]: Without dead ends: 229 [2020-07-20 13:50:44,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 288 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2020-07-20 13:50:44,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-07-20 13:50:44,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 194. [2020-07-20 13:50:44,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-07-20 13:50:44,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 230 transitions. [2020-07-20 13:50:44,607 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 230 transitions. Word has length 154 [2020-07-20 13:50:44,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:50:44,608 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 230 transitions. [2020-07-20 13:50:44,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-20 13:50:44,608 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 230 transitions. [2020-07-20 13:50:44,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-20 13:50:44,611 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:50:44,611 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2020-07-20 13:50:44,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:50:44,826 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:50:44,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:50:44,827 INFO L82 PathProgramCache]: Analyzing trace with hash -547179998, now seen corresponding path program 1 times [2020-07-20 13:50:44,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:50:44,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489755927] [2020-07-20 13:50:44,828 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 13:56:39,238 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:56:39,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:56:45,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 70 conjunts are in the unsatisfiable core [2020-07-20 13:56:45,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:56:45,531 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-20 13:56:45,532 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:45,537 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:45,537 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:45,538 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:8 [2020-07-20 13:56:45,589 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2020-07-20 13:56:45,590 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:45,594 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:45,594 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:45,594 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-07-20 13:56:47,701 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (alloc_or_die_slave_~ptr~0.base Int)) (and (<= (+ alloc_or_die_slave_~ptr~0.base 1) |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0) (+ alloc_or_die_slave_~ptr~0.offset 4) 0))))) is different from true [2020-07-20 13:56:57,511 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 25 [2020-07-20 13:56:59,528 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (alloc_or_die_slave_~ptr~0.base Int)) (and (<= (+ alloc_or_die_slave_~ptr~0.base 1) |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0) (+ alloc_or_die_slave_~ptr~0.offset 4) 0)) |c_dll_insert_slave_#in~dll.base|) |c_dll_insert_slave_#in~dll.offset|) c_dll_insert_slave_~next~0.base))) is different from true [2020-07-20 13:57:01,284 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (alloc_or_die_slave_~ptr~0.base Int)) (and (<= (+ alloc_or_die_slave_~ptr~0.base 1) |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0) (+ alloc_or_die_slave_~ptr~0.offset 4) 0)) |c_dll_insert_slave_#in~dll.base|) |c_dll_insert_slave_#in~dll.offset|) 0))) is different from true [2020-07-20 13:57:03,315 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (alloc_or_die_slave_~ptr~0.base Int)) (and (<= (+ alloc_or_die_slave_~ptr~0.base 1) |c_#StackHeapBarrier|) (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0) (+ alloc_or_die_slave_~ptr~0.offset 4) 0)) |c_##fun~$Pointer$~TO~VOID_#in~9.base|) |c_##fun~$Pointer$~TO~VOID_#in~9.offset|)))) is different from true [2020-07-20 13:57:03,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 13:57:03,335 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:57:03,336 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:57:03,336 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:57:03,336 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:37, output treesize:1 [2020-07-20 13:57:03,388 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 8 not checked. [2020-07-20 13:57:03,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:57:07,875 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_alloc_or_die_slave_~ptr~0.base_259 Int) (v_alloc_or_die_slave_~ptr~0.offset_259 Int)) (or (< |c_#StackHeapBarrier| (+ v_alloc_or_die_slave_~ptr~0.base_259 1)) (not (= 0 (select (select (store |c_#memory_$Pointer$.base| v_alloc_or_die_slave_~ptr~0.base_259 (store (store (select |c_#memory_$Pointer$.base| v_alloc_or_die_slave_~ptr~0.base_259) v_alloc_or_die_slave_~ptr~0.offset_259 0) (+ v_alloc_or_die_slave_~ptr~0.offset_259 4) 0)) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|))))) is different from false [2020-07-20 13:57:07,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489755927] [2020-07-20 13:57:07,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 13:57:07,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-07-20 13:57:07,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060454001] [2020-07-20 13:57:07,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-20 13:57:07,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:57:07,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-20 13:57:07,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=331, Unknown=9, NotChecked=200, Total=600 [2020-07-20 13:57:07,880 INFO L87 Difference]: Start difference. First operand 194 states and 230 transitions. Second operand 24 states. [2020-07-20 13:57:11,863 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 25 [2020-07-20 13:57:13,906 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 28 [2020-07-20 13:57:21,981 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 30 [2020-07-20 13:57:34,028 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 29 [2020-07-20 13:57:43,859 WARN L193 SmtUtils]: Spent 1.78 s on a formula simplification that was a NOOP. DAG size: 34 [2020-07-20 13:57:57,864 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 31 [2020-07-20 13:58:05,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:58:05,269 INFO L93 Difference]: Finished difference Result 390 states and 472 transitions. [2020-07-20 13:58:05,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-20 13:58:05,270 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 157 [2020-07-20 13:58:05,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:58:05,279 INFO L225 Difference]: With dead ends: 390 [2020-07-20 13:58:05,279 INFO L226 Difference]: Without dead ends: 207 [2020-07-20 13:58:05,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 61.0s TimeCoverageRelationStatistics Valid=136, Invalid=982, Unknown=24, NotChecked=340, Total=1482 [2020-07-20 13:58:05,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-07-20 13:58:05,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 202. [2020-07-20 13:58:05,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-07-20 13:58:05,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 239 transitions. [2020-07-20 13:58:05,342 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 239 transitions. Word has length 157 [2020-07-20 13:58:05,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:58:05,343 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 239 transitions. [2020-07-20 13:58:05,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-20 13:58:05,343 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 239 transitions. [2020-07-20 13:58:05,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-20 13:58:05,351 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:58:05,351 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-20 13:58:05,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:58:05,552 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:58:05,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:58:05,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1779393950, now seen corresponding path program 1 times [2020-07-20 13:58:05,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:58:05,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371441187] [2020-07-20 13:58:05,553 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 14:01:28,301 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:01:28,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:01:31,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 108 conjunts are in the unsatisfiable core [2020-07-20 14:01:31,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:01:31,334 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2020-07-20 14:01:31,335 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 14:01:31,345 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 14:01:31,348 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2020-07-20 14:01:31,349 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 14:01:31,356 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 14:01:31,356 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 14:01:31,357 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:7 [2020-07-20 14:01:33,499 WARN L860 $PredicateComparison]: unable to prove that (exists ((dll_insert_master_~item~1.base Int)) (and (<= (+ dll_insert_master_~item~1.base 1) |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base (store (store (store (select |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base) 0 0) 4 0) 8 0)) |c_dll_insert_master_#in~dll.base|) |c_dll_insert_master_#in~dll.offset|) c_dll_insert_master_~next~3.offset) (= c_dll_insert_master_~next~3.base (select (select (store |c_old(#memory_$Pointer$.base)| dll_insert_master_~item~1.base (store (store (store (select |c_old(#memory_$Pointer$.base)| dll_insert_master_~item~1.base) 0 0) 4 0) 8 0)) |c_dll_insert_master_#in~dll.base|) |c_dll_insert_master_#in~dll.offset|)))) is different from true [2020-07-20 14:01:33,501 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:01:35,515 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((dll_insert_master_~item~1.base Int)) (and (not (= 0 (select (select (store |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base (store (store (store (select |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base) 0 0) 4 0) 8 0)) |c_dll_insert_master_#in~dll.base|) |c_dll_insert_master_#in~dll.offset|))) (<= (+ dll_insert_master_~item~1.base 1) |c_#StackHeapBarrier|))) (exists ((dll_insert_master_~item~1.base Int)) (and (not (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| dll_insert_master_~item~1.base (store (store (store (select |c_old(#memory_$Pointer$.base)| dll_insert_master_~item~1.base) 0 0) 4 0) 8 0)) |c_dll_insert_master_#in~dll.base|) |c_dll_insert_master_#in~dll.offset|))) (<= (+ dll_insert_master_~item~1.base 1) |c_#StackHeapBarrier|)))) is different from true [2020-07-20 14:01:35,532 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 58 [2020-07-20 14:01:35,533 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 14:01:35,605 INFO L624 ElimStorePlain]: treesize reduction 16, result has 79.5 percent of original size [2020-07-20 14:01:35,608 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 58 [2020-07-20 14:01:35,609 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 14:01:35,691 INFO L624 ElimStorePlain]: treesize reduction 16, result has 80.7 percent of original size [2020-07-20 14:01:35,694 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 14:01:35,695 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:01:35,695 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:01:35,696 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:01:35,697 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:01:35,699 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 14:01:35,699 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:01:35,700 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:01:35,701 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:01:35,702 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:01:35,703 INFO L544 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 14:01:35,703 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:57, output treesize:1 [2020-07-20 14:01:37,798 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_4 Int)) (and (not (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| v_prenex_4 (store (store (store (select |c_old(#memory_$Pointer$.base)| v_prenex_4) 0 0) 4 0) 8 0)) |c_dll_insert_master_#in~dll.base|) |c_dll_insert_master_#in~dll.offset|))) (<= (+ v_prenex_4 1) |c_#StackHeapBarrier|))) (exists ((dll_insert_master_~item~1.base Int)) (and (not (= 0 (select (select (store |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base (store (store (store (select |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base) 0 0) 4 0) 8 0)) |c_dll_insert_master_#in~dll.base|) |c_dll_insert_master_#in~dll.offset|))) (<= (+ dll_insert_master_~item~1.base 1) |c_#StackHeapBarrier|)))) is different from true [2020-07-20 14:01:39,817 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_4 Int)) (and (not (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| v_prenex_4 (store (store (store (select |c_old(#memory_$Pointer$.base)| v_prenex_4) 0 0) 4 0) 8 0)) |c_##fun~$Pointer$~TO~VOID_#in~9.base|) |c_##fun~$Pointer$~TO~VOID_#in~9.offset|))) (<= (+ v_prenex_4 1) |c_#StackHeapBarrier|))) (exists ((dll_insert_master_~item~1.base Int)) (and (not (= 0 (select (select (store |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base (store (store (store (select |c_old(#memory_$Pointer$.offset)| dll_insert_master_~item~1.base) 0 0) 4 0) 8 0)) |c_##fun~$Pointer$~TO~VOID_#in~9.base|) |c_##fun~$Pointer$~TO~VOID_#in~9.offset|))) (<= (+ dll_insert_master_~item~1.base 1) |c_#StackHeapBarrier|)))) is different from true [2020-07-20 14:01:39,822 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:01:39,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 14:01:39,838 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 14:01:39,840 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-07-20 14:01:39,841 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 14:01:39,842 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 14:01:39,843 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_$Pointer$.offset_BEFORE_CALL_6| vanished before elimination [2020-07-20 14:01:39,843 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 14:01:39,843 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:91, output treesize:1 [2020-07-20 14:01:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 126 proven. 7 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-07-20 14:01:39,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:01:40,995 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-07-20 14:01:42,295 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:01:44,304 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_dll_insert_master_~item~1.base_102 Int)) (or (= 0 (select (select (store |c_#memory_$Pointer$.offset| v_dll_insert_master_~item~1.base_102 (store (store (store (select |c_#memory_$Pointer$.offset| v_dll_insert_master_~item~1.base_102) 0 0) 4 0) 8 0)) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|)) (< |c_#StackHeapBarrier| (+ v_dll_insert_master_~item~1.base_102 1)))) (forall ((v_dll_insert_master_~item~1.base_102 Int)) (or (< |c_#StackHeapBarrier| (+ v_dll_insert_master_~item~1.base_102 1)) (= 0 (select (select (store |c_#memory_$Pointer$.base| v_dll_insert_master_~item~1.base_102 (store (store (store (select |c_#memory_$Pointer$.base| v_dll_insert_master_~item~1.base_102) 0 0) 4 0) 8 0)) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|))))) is different from false [2020-07-20 14:01:44,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371441187] [2020-07-20 14:01:44,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 14:01:44,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-07-20 14:01:44,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24832174] [2020-07-20 14:01:44,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-20 14:01:44,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:01:44,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-20 14:01:44,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=157, Unknown=5, NotChecked=140, Total=342 [2020-07-20 14:01:44,310 INFO L87 Difference]: Start difference. First operand 202 states and 239 transitions. Second operand 18 states. [2020-07-20 14:01:58,846 WARN L193 SmtUtils]: Spent 10.03 s on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 14:01:59,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:01:59,886 INFO L93 Difference]: Finished difference Result 403 states and 480 transitions. [2020-07-20 14:01:59,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-20 14:01:59,886 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 157 [2020-07-20 14:01:59,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:01:59,889 INFO L225 Difference]: With dead ends: 403 [2020-07-20 14:01:59,889 INFO L226 Difference]: Without dead ends: 212 [2020-07-20 14:01:59,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=56, Invalid=263, Unknown=7, NotChecked=180, Total=506 [2020-07-20 14:01:59,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-07-20 14:01:59,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 208. [2020-07-20 14:01:59,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-07-20 14:01:59,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 247 transitions. [2020-07-20 14:01:59,908 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 247 transitions. Word has length 157 [2020-07-20 14:01:59,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:01:59,909 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 247 transitions. [2020-07-20 14:01:59,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-20 14:01:59,909 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 247 transitions. [2020-07-20 14:01:59,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-07-20 14:01:59,911 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:01:59,912 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-20 14:02:00,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:02:00,123 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:02:00,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:02:00,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1632845278, now seen corresponding path program 1 times [2020-07-20 14:02:00,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:02:00,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552470839] [2020-07-20 14:02:00,125 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 14:04:32,191 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:04:32,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:04:34,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 76 conjunts are in the unsatisfiable core [2020-07-20 14:04:34,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:04:34,326 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 14:04:34,326 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 39 [2020-07-20 14:04:34,327 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 14:04:34,351 INFO L624 ElimStorePlain]: treesize reduction 16, result has 62.8 percent of original size [2020-07-20 14:04:34,352 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 14:04:34,353 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:8 [2020-07-20 14:04:34,401 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2020-07-20 14:04:34,402 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 14:04:34,405 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 14:04:34,406 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 14:04:34,406 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-07-20 14:04:38,518 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 23 [2020-07-20 14:04:42,579 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 29 [2020-07-20 14:04:44,588 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_master_~ptr~1.base Int)) (and (<= (+ alloc_or_die_master_~ptr~1.base 1) |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_master_~ptr~1.base (store (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_master_~ptr~1.base) 0 0) 4 0) 8 0)) |c_dll_insert_master_#in~dll.base|) |c_dll_insert_master_#in~dll.offset|) c_dll_insert_master_~next~3.base))) is different from true [2020-07-20 14:04:46,616 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_master_~ptr~1.base Int)) (and (<= (+ alloc_or_die_master_~ptr~1.base 1) |c_#StackHeapBarrier|) (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_master_~ptr~1.base (store (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_master_~ptr~1.base) 0 0) 4 0) 8 0)) |c_dll_insert_master_#in~dll.base|) |c_dll_insert_master_#in~dll.offset|)))) is different from true [2020-07-20 14:04:46,625 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2020-07-20 14:04:46,625 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-20 14:04:46,635 INFO L624 ElimStorePlain]: treesize reduction 53, result has 8.6 percent of original size [2020-07-20 14:04:46,635 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 14:04:46,636 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:27, output treesize:1 [2020-07-20 14:04:48,652 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_master_~ptr~1.base Int)) (and (<= (+ alloc_or_die_master_~ptr~1.base 1) |c_#StackHeapBarrier|) (= 0 (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_master_~ptr~1.base (store (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_master_~ptr~1.base) 0 0) 4 0) 8 0)) |c_##fun~$Pointer$~TO~VOID_#in~9.base|) |c_##fun~$Pointer$~TO~VOID_#in~9.offset|)))) is different from true [2020-07-20 14:04:48,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-20 14:04:48,664 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 14:04:48,666 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 14:04:48,666 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 14:04:48,666 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:38, output treesize:1 [2020-07-20 14:04:48,704 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 34 proven. 19 refuted. 0 times theorem prover too weak. 120 trivial. 7 not checked. [2020-07-20 14:04:48,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:04:52,038 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_alloc_or_die_master_~ptr~1.base_130 Int)) (or (not (= (select (select (store |c_#memory_$Pointer$.base| v_alloc_or_die_master_~ptr~1.base_130 (store (store (store (select |c_#memory_$Pointer$.base| v_alloc_or_die_master_~ptr~1.base_130) 0 0) 4 0) 8 0)) |c_dll_create_generic_~#dll~0.base|) |c_dll_create_generic_~#dll~0.offset|) 0)) (< |c_#StackHeapBarrier| (+ v_alloc_or_die_master_~ptr~1.base_130 1)))) is different from false [2020-07-20 14:04:52,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552470839] [2020-07-20 14:04:52,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 14:04:52,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-07-20 14:04:52,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507535196] [2020-07-20 14:04:52,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-20 14:04:52,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:04:52,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-20 14:04:52,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=298, Unknown=6, NotChecked=148, Total=506 [2020-07-20 14:04:52,042 INFO L87 Difference]: Start difference. First operand 208 states and 247 transitions. Second operand 22 states. [2020-07-20 14:04:54,205 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 30 [2020-07-20 14:04:56,258 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 32 [2020-07-20 14:05:00,312 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 32