/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:03:17,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:03:17,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:03:17,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:03:17,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:03:17,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:03:17,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:03:17,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:03:17,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:03:17,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:03:17,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:03:17,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:03:17,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:03:17,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:03:17,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:03:17,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:03:17,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:03:17,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:03:17,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:03:17,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:03:17,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:03:17,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:03:17,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:03:17,168 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:03:17,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 19:03:17,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 19:03:17,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 19:03:17,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 19:03:17,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 19:03:17,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 19:03:17,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 19:03:17,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 19:03:17,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 19:03:17,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 19:03:17,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 19:03:17,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 19:03:17,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 19:03:17,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 19:03:17,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:03:17,193 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:03:17,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:03:17,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:03:17,219 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:03:17,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:03:17,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:03:17,223 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:03:17,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:03:17,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:03:17,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:03:17,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:03:17,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:03:17,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:03:17,226 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:03:17,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:03:17,226 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:03:17,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:03:17,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:03:17,227 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:03:17,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:03:17,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:03:17,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:03:17,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:03:17,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:03:17,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:03:17,229 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:03:17,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:03:17,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:03:17,558 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:03:17,560 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:03:17,560 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:03:17,561 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-22 19:03:17,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6f068b0f/737fd412dc7947659b69074ae1127774/FLAG95a009d9a [2020-08-22 19:03:18,351 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:03:18,354 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-22 19:03:18,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6f068b0f/737fd412dc7947659b69074ae1127774/FLAG95a009d9a [2020-08-22 19:03:18,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6f068b0f/737fd412dc7947659b69074ae1127774 [2020-08-22 19:03:18,598 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:03:18,600 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:03:18,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:03:18,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:03:18,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:03:18,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:03:18" (1/1) ... [2020-08-22 19:03:18,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2638445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:03:18, skipping insertion in model container [2020-08-22 19:03:18,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:03:18" (1/1) ... [2020-08-22 19:03:18,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:03:18,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:03:19,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:03:19,239 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:03:19,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:03:19,381 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:03:19,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:03:19 WrapperNode [2020-08-22 19:03:19,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:03:19,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:03:19,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:03:19,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:03:19,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:03:19" (1/1) ... [2020-08-22 19:03:19,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:03:19" (1/1) ... [2020-08-22 19:03:19,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:03:19" (1/1) ... [2020-08-22 19:03:19,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:03:19" (1/1) ... [2020-08-22 19:03:19,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:03:19" (1/1) ... [2020-08-22 19:03:19,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:03:19" (1/1) ... [2020-08-22 19:03:19,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:03:19" (1/1) ... [2020-08-22 19:03:19,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:03:19,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:03:19,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:03:19,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:03:19,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:03:19" (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 [2020-08-22 19:03:19,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:03:19,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:03:19,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 19:03:19,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-22 19:03:19,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-22 19:03:19,548 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-22 19:03:19,548 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-22 19:03:19,548 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-22 19:03:19,548 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-22 19:03:19,549 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-22 19:03:19,549 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-22 19:03:19,549 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-22 19:03:19,549 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-22 19:03:19,549 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-22 19:03:19,550 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-22 19:03:19,550 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-22 19:03:19,550 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-22 19:03:19,550 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-22 19:03:19,551 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-22 19:03:19,552 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-22 19:03:19,553 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-22 19:03:19,553 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:03:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:03:19,555 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 19:03:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 19:03:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 19:03:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 19:03:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 19:03:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 19:03:19,556 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 19:03:19,557 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 19:03:19,557 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 19:03:19,557 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 19:03:19,557 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 19:03:19,558 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 19:03:19,558 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 19:03:19,558 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 19:03:19,558 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 19:03:19,558 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 19:03:19,558 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-22 19:03:19,558 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-22 19:03:19,559 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 19:03:19,559 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 19:03:19,559 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 19:03:19,559 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 19:03:19,559 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 19:03:19,559 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 19:03:19,560 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 19:03:19,560 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 19:03:19,560 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 19:03:19,561 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 19:03:19,561 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 19:03:19,561 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 19:03:19,561 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 19:03:19,561 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 19:03:19,561 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 19:03:19,562 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 19:03:19,562 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 19:03:19,562 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 19:03:19,562 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 19:03:19,562 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 19:03:19,562 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 19:03:19,562 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 19:03:19,563 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 19:03:19,563 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 19:03:19,563 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 19:03:19,563 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 19:03:19,563 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 19:03:19,563 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 19:03:19,564 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 19:03:19,564 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 19:03:19,564 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 19:03:19,565 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 19:03:19,565 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 19:03:19,566 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 19:03:19,566 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 19:03:19,566 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 19:03:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 19:03:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 19:03:19,567 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 19:03:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 19:03:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 19:03:19,568 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 19:03:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 19:03:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 19:03:19,569 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 19:03:19,570 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 19:03:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 19:03:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 19:03:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 19:03:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 19:03:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 19:03:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 19:03:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 19:03:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 19:03:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 19:03:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 19:03:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 19:03:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 19:03:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 19:03:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 19:03:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 19:03:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 19:03:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 19:03:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 19:03:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 19:03:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 19:03:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 19:03:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 19:03:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 19:03:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 19:03:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 19:03:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 19:03:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 19:03:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 19:03:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 19:03:19,576 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 19:03:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 19:03:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 19:03:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 19:03:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 19:03:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 19:03:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 19:03:19,577 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 19:03:19,578 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 19:03:19,578 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 19:03:19,578 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 19:03:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 19:03:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:03:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-22 19:03:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-22 19:03:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 19:03:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 19:03:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-22 19:03:19,580 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-22 19:03:19,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 19:03:19,580 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-22 19:03:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 19:03:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 19:03:19,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 19:03:19,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 19:03:19,582 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-22 19:03:19,582 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-22 19:03:19,582 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-22 19:03:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-22 19:03:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-22 19:03:19,587 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-22 19:03:19,588 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-22 19:03:19,588 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-22 19:03:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-22 19:03:19,597 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-22 19:03:19,597 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-22 19:03:19,598 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:03:19,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:03:19,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:03:20,669 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:03:20,669 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-22 19:03:20,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:03:20 BoogieIcfgContainer [2020-08-22 19:03:20,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:03:20,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:03:20,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:03:20,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:03:20,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:03:18" (1/3) ... [2020-08-22 19:03:20,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a3d3bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:03:20, skipping insertion in model container [2020-08-22 19:03:20,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:03:19" (2/3) ... [2020-08-22 19:03:20,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a3d3bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:03:20, skipping insertion in model container [2020-08-22 19:03:20,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:03:20" (3/3) ... [2020-08-22 19:03:20,688 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-08-22 19:03:20,701 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:03:20,712 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:03:20,729 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:03:20,755 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:03:20,755 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:03:20,755 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:03:20,755 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:03:20,755 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:03:20,756 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:03:20,756 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:03:20,756 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:03:20,780 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states. [2020-08-22 19:03:20,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-22 19:03:20,797 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:03:20,799 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:03:20,800 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:03:20,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:03:20,807 INFO L82 PathProgramCache]: Analyzing trace with hash 575468621, now seen corresponding path program 1 times [2020-08-22 19:03:20,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:03:20,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931643657] [2020-08-22 19:03:20,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:03:20,905 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:03:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:21,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:03:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:21,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 19:03:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:21,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:03:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:21,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:03:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:21,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:21,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:21,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:03:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:21,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:21,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-22 19:03:21,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931643657] [2020-08-22 19:03:21,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:03:21,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:03:21,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985113857] [2020-08-22 19:03:21,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:03:21,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:03:21,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:03:21,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:03:21,557 INFO L87 Difference]: Start difference. First operand 276 states. Second operand 4 states. [2020-08-22 19:03:22,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:03:22,345 INFO L93 Difference]: Finished difference Result 568 states and 767 transitions. [2020-08-22 19:03:22,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 19:03:22,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-08-22 19:03:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:03:22,365 INFO L225 Difference]: With dead ends: 568 [2020-08-22 19:03:22,365 INFO L226 Difference]: Without dead ends: 275 [2020-08-22 19:03:22,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:03:22,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-08-22 19:03:22,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 255. [2020-08-22 19:03:22,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-08-22 19:03:22,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 284 transitions. [2020-08-22 19:03:22,472 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 284 transitions. Word has length 85 [2020-08-22 19:03:22,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:03:22,473 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 284 transitions. [2020-08-22 19:03:22,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:03:22,473 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 284 transitions. [2020-08-22 19:03:22,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-22 19:03:22,478 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:03:22,478 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:03:22,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:03:22,479 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:03:22,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:03:22,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1893520380, now seen corresponding path program 1 times [2020-08-22 19:03:22,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:03:22,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200027402] [2020-08-22 19:03:22,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:03:22,486 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:03:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:22,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:03:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:22,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 19:03:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:22,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:03:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:22,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:03:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:22,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:22,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:22,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:03:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:22,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:22,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:22,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:23,035 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-22 19:03:23,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200027402] [2020-08-22 19:03:23,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:03:23,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-08-22 19:03:23,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961862143] [2020-08-22 19:03:23,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 19:03:23,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:03:23,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 19:03:23,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-22 19:03:23,039 INFO L87 Difference]: Start difference. First operand 255 states and 284 transitions. Second operand 13 states. [2020-08-22 19:03:25,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:03:25,034 INFO L93 Difference]: Finished difference Result 542 states and 621 transitions. [2020-08-22 19:03:25,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 19:03:25,037 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 87 [2020-08-22 19:03:25,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:03:25,043 INFO L225 Difference]: With dead ends: 542 [2020-08-22 19:03:25,043 INFO L226 Difference]: Without dead ends: 296 [2020-08-22 19:03:25,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-08-22 19:03:25,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-08-22 19:03:25,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 276. [2020-08-22 19:03:25,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-08-22 19:03:25,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 307 transitions. [2020-08-22 19:03:25,106 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 307 transitions. Word has length 87 [2020-08-22 19:03:25,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:03:25,106 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 307 transitions. [2020-08-22 19:03:25,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 19:03:25,107 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 307 transitions. [2020-08-22 19:03:25,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-08-22 19:03:25,119 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:03:25,120 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-08-22 19:03:25,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:03:25,120 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:03:25,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:03:25,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1671014528, now seen corresponding path program 1 times [2020-08-22 19:03:25,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:03:25,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475977908] [2020-08-22 19:03:25,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:03:25,135 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:03:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:25,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:03:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:25,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 19:03:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:25,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:03:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:25,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:03:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:25,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:26,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:26,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 19:03:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:26,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:03:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:26,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:03:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:26,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:26,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:26,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:03:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:26,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:26,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:26,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 19:03:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:26,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:26,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:26,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 19:03:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:26,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:03:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:26,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:03:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:26,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:27,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:27,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:03:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:27,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:27,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 115 proven. 38 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-08-22 19:03:28,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475977908] [2020-08-22 19:03:28,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:03:28,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2020-08-22 19:03:28,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503469618] [2020-08-22 19:03:28,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-08-22 19:03:28,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:03:28,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-08-22 19:03:28,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1392, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 19:03:28,326 INFO L87 Difference]: Start difference. First operand 276 states and 307 transitions. Second operand 39 states. [2020-08-22 19:03:35,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:03:35,829 INFO L93 Difference]: Finished difference Result 574 states and 655 transitions. [2020-08-22 19:03:35,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-22 19:03:35,830 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 235 [2020-08-22 19:03:35,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:03:35,836 INFO L225 Difference]: With dead ends: 574 [2020-08-22 19:03:35,836 INFO L226 Difference]: Without dead ends: 311 [2020-08-22 19:03:35,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=327, Invalid=4785, Unknown=0, NotChecked=0, Total=5112 [2020-08-22 19:03:35,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-08-22 19:03:35,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 286. [2020-08-22 19:03:35,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-08-22 19:03:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 319 transitions. [2020-08-22 19:03:35,884 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 319 transitions. Word has length 235 [2020-08-22 19:03:35,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:03:35,884 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 319 transitions. [2020-08-22 19:03:35,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-08-22 19:03:35,885 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 319 transitions. [2020-08-22 19:03:35,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-08-22 19:03:35,889 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:03:35,890 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-08-22 19:03:35,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:03:35,890 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:03:35,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:03:35,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1561006854, now seen corresponding path program 1 times [2020-08-22 19:03:35,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:03:35,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837297238] [2020-08-22 19:03:35,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:03:35,899 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:03:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:36,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:03:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:36,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 19:03:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:36,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:03:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:36,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:03:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:36,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:36,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:36,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 19:03:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:36,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:03:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:36,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:03:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:36,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:36,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:36,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:03:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:36,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:36,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:37,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 19:03:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:37,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:37,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:37,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 19:03:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:37,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:03:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:37,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:03:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:37,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:37,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:37,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:03:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:37,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:37,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:38,383 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-08-22 19:03:38,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837297238] [2020-08-22 19:03:38,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:03:38,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2020-08-22 19:03:38,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083923772] [2020-08-22 19:03:38,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-08-22 19:03:38,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:03:38,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-08-22 19:03:38,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2020-08-22 19:03:38,391 INFO L87 Difference]: Start difference. First operand 286 states and 319 transitions. Second operand 32 states. [2020-08-22 19:03:39,720 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-08-22 19:03:39,939 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-08-22 19:03:40,156 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-08-22 19:03:40,409 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-08-22 19:03:40,660 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-08-22 19:03:40,891 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-08-22 19:03:45,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:03:45,266 INFO L93 Difference]: Finished difference Result 588 states and 663 transitions. [2020-08-22 19:03:45,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 19:03:45,268 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 237 [2020-08-22 19:03:45,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:03:45,274 INFO L225 Difference]: With dead ends: 588 [2020-08-22 19:03:45,274 INFO L226 Difference]: Without dead ends: 317 [2020-08-22 19:03:45,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=256, Invalid=2824, Unknown=0, NotChecked=0, Total=3080 [2020-08-22 19:03:45,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-08-22 19:03:45,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 295. [2020-08-22 19:03:45,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-08-22 19:03:45,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 329 transitions. [2020-08-22 19:03:45,315 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 329 transitions. Word has length 237 [2020-08-22 19:03:45,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:03:45,315 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 329 transitions. [2020-08-22 19:03:45,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-08-22 19:03:45,316 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 329 transitions. [2020-08-22 19:03:45,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-08-22 19:03:45,320 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:03:45,320 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-08-22 19:03:45,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 19:03:45,321 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:03:45,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:03:45,321 INFO L82 PathProgramCache]: Analyzing trace with hash -978473208, now seen corresponding path program 1 times [2020-08-22 19:03:45,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:03:45,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192540528] [2020-08-22 19:03:45,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:03:45,331 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:03:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:45,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:03:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:45,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 19:03:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:45,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:03:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:45,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:03:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:45,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:46,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:46,629 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-08-22 19:03:46,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 19:03:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:46,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:03:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:46,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:03:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:46,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:46,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:46,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:03:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:46,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:46,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:46,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 19:03:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:46,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:46,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:46,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 19:03:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:46,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:03:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:46,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:03:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:46,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:46,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:47,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:03:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:47,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:47,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:47,632 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-08-22 19:03:47,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192540528] [2020-08-22 19:03:47,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:03:47,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-08-22 19:03:47,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389641992] [2020-08-22 19:03:47,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-22 19:03:47,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:03:47,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-22 19:03:47,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-08-22 19:03:47,636 INFO L87 Difference]: Start difference. First operand 295 states and 329 transitions. Second operand 23 states. [2020-08-22 19:03:48,214 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-08-22 19:03:48,765 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-08-22 19:03:49,917 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-08-22 19:03:50,695 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-08-22 19:03:51,500 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-08-22 19:03:52,161 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-08-22 19:03:56,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:03:56,297 INFO L93 Difference]: Finished difference Result 592 states and 661 transitions. [2020-08-22 19:03:56,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 19:03:56,302 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 239 [2020-08-22 19:03:56,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:03:56,305 INFO L225 Difference]: With dead ends: 592 [2020-08-22 19:03:56,305 INFO L226 Difference]: Without dead ends: 315 [2020-08-22 19:03:56,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=117, Invalid=1005, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 19:03:56,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-08-22 19:03:56,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 295. [2020-08-22 19:03:56,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-08-22 19:03:56,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 327 transitions. [2020-08-22 19:03:56,343 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 327 transitions. Word has length 239 [2020-08-22 19:03:56,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:03:56,344 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 327 transitions. [2020-08-22 19:03:56,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-22 19:03:56,344 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 327 transitions. [2020-08-22 19:03:56,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-08-22 19:03:56,348 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:03:56,348 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-08-22 19:03:56,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 19:03:56,349 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:03:56,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:03:56,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1063198871, now seen corresponding path program 1 times [2020-08-22 19:03:56,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:03:56,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057569566] [2020-08-22 19:03:56,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:03:56,357 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:03:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:56,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:03:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:56,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 19:03:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:56,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:03:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:03:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 19:03:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:03:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:03:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:03:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 19:03:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 19:03:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:03:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:03:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:03:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:03:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:57,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:03:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:03:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-08-22 19:03:58,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057569566] [2020-08-22 19:03:58,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:03:58,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-08-22 19:03:58,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382190554] [2020-08-22 19:03:58,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-22 19:03:58,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:03:58,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-22 19:03:58,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-08-22 19:03:58,453 INFO L87 Difference]: Start difference. First operand 295 states and 327 transitions. Second operand 24 states. [2020-08-22 19:04:02,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:04:02,939 INFO L93 Difference]: Finished difference Result 527 states and 592 transitions. [2020-08-22 19:04:02,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-22 19:04:02,940 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 238 [2020-08-22 19:04:02,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:04:02,945 INFO L225 Difference]: With dead ends: 527 [2020-08-22 19:04:02,946 INFO L226 Difference]: Without dead ends: 417 [2020-08-22 19:04:02,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=169, Invalid=1811, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 19:04:02,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-22 19:04:02,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 332. [2020-08-22 19:04:02,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-08-22 19:04:02,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 369 transitions. [2020-08-22 19:04:02,987 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 369 transitions. Word has length 238 [2020-08-22 19:04:02,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:04:02,988 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 369 transitions. [2020-08-22 19:04:02,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-22 19:04:02,988 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 369 transitions. [2020-08-22 19:04:02,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-08-22 19:04:02,992 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:04:02,992 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1] [2020-08-22 19:04:02,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 19:04:02,993 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:04:02,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:04:02,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1682472288, now seen corresponding path program 1 times [2020-08-22 19:04:02,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:04:02,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142221299] [2020-08-22 19:04:02,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:04:03,001 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:04:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:03,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:04:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:03,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 19:04:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:03,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:04:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:03,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:04:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:04,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:04:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:04,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:04:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:04,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 19:04:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:04,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:04:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:04,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 19:04:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:04,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:04:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:04,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:04:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:04,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 19:04:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:04,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:04:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:04,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:04:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:04,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 19:04:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:04,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:04:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:05,962 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-08-22 19:04:06,243 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2020-08-22 19:04:06,469 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-08-22 19:04:06,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 19:04:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:07,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 19:04:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:08,585 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-08-22 19:04:08,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:04:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:34,630 WARN L193 SmtUtils]: Spent 27.18 s on a formula simplification. DAG size of input: 1243 DAG size of output: 48 [2020-08-22 19:15:04,711 ERROR L276 FreeRefinementEngine]: Caught unknown exception: line 836875 column 7: canceled [2020-08-22 19:15:04,711 WARN L341 FreeRefinementEngine]: Global settings require throwing the following exception [2020-08-22 19:15:04,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 19:15:04,712 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 836875 column 7: canceled at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1454) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:221) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:131) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.push(UndoableWrapperScript.java:53) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:393) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:164) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:134) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computePredicates(NestedInterpolantsBuilder.java:593) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:171) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:378) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:378) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:378) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:378) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:378) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:378) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolantsCraigNested(Interpolator.java:146) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolants(Interpolator.java:100) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:289) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-08-22 19:15:04,717 INFO L168 Benchmark]: Toolchain (without parser) took 706117.78 ms. Allocated memory was 140.0 MB in the beginning and 3.2 GB in the end (delta: 3.1 GB). Free memory was 101.3 MB in the beginning and 1.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2020-08-22 19:15:04,718 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-22 19:15:04,719 INFO L168 Benchmark]: CACSL2BoogieTranslator took 779.89 ms. Allocated memory was 140.0 MB in the beginning and 205.5 MB in the end (delta: 65.5 MB). Free memory was 101.1 MB in the beginning and 167.6 MB in the end (delta: -66.4 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-08-22 19:15:04,720 INFO L168 Benchmark]: Boogie Preprocessor took 98.50 ms. Allocated memory is still 205.5 MB. Free memory was 167.6 MB in the beginning and 163.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-22 19:15:04,720 INFO L168 Benchmark]: RCFGBuilder took 1196.61 ms. Allocated memory was 205.5 MB in the beginning and 235.9 MB in the end (delta: 30.4 MB). Free memory was 163.0 MB in the beginning and 191.3 MB in the end (delta: -28.3 MB). Peak memory consumption was 76.1 MB. Max. memory is 7.1 GB. [2020-08-22 19:15:04,721 INFO L168 Benchmark]: TraceAbstraction took 704035.47 ms. Allocated memory was 235.9 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 191.3 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2020-08-22 19:15:04,725 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 779.89 ms. Allocated memory was 140.0 MB in the beginning and 205.5 MB in the end (delta: 65.5 MB). Free memory was 101.1 MB in the beginning and 167.6 MB in the end (delta: -66.4 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.50 ms. Allocated memory is still 205.5 MB. Free memory was 167.6 MB in the beginning and 163.0 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1196.61 ms. Allocated memory was 205.5 MB in the beginning and 235.9 MB in the end (delta: 30.4 MB). Free memory was 163.0 MB in the beginning and 191.3 MB in the end (delta: -28.3 MB). Peak memory consumption was 76.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 704035.47 ms. Allocated memory was 235.9 MB in the beginning and 3.2 GB in the end (delta: 3.0 GB). Free memory was 191.3 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: line 836875 column 7: canceled de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: line 836875 column 7: canceled: de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1454) RESULT: Ultimate could not prove your program: Toolchain returned no result. [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...