/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:14:32,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:14:32,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:14:32,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 22:14:32,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 22:14:32,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 22:14:32,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 22:14:32,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 22:14:32,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 22:14:32,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 22:14:32,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 22:14:32,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 22:14:32,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:14:32,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:14:32,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:14:32,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:14:32,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:14:32,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:14:32,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:14:32,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:14:32,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:14:32,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:14:32,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:14:32,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:14:32,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 22:14:32,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 22:14:32,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 22:14:32,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 22:14:32,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 22:14:32,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 22:14:32,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 22:14:32,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 22:14:32,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 22:14:32,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 22:14:32,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 22:14:32,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 22:14:32,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 22:14:32,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 22:14:32,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:14:32,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:14:32,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:14:32,603 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 22:14:32,630 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:14:32,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:14:32,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:14:32,632 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:14:32,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:14:32,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:14:32,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:14:32,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:14:32,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:14:32,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:14:32,636 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:14:32,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:14:32,637 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:14:32,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:14:32,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:14:32,637 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:14:32,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:14:32,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:14:32,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:14:32,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:14:32,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:14:32,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:14:32,640 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 22:14:32,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:14:32,981 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:14:32,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:14:32,987 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:14:32,987 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:14:32,988 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-22 22:14:33,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/390660fef/6f97cf4f15df402cbd5d8cd802cf1c32/FLAGdc1a1d640 [2020-08-22 22:14:33,569 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:14:33,570 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-22 22:14:33,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/390660fef/6f97cf4f15df402cbd5d8cd802cf1c32/FLAGdc1a1d640 [2020-08-22 22:14:33,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/390660fef/6f97cf4f15df402cbd5d8cd802cf1c32 [2020-08-22 22:14:33,865 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:14:33,867 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:14:33,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:14:33,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:14:33,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:14:33,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:14:33" (1/1) ... [2020-08-22 22:14:33,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5395a65d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:14:33, skipping insertion in model container [2020-08-22 22:14:33,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:14:33" (1/1) ... [2020-08-22 22:14:33,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:14:33,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:14:34,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:14:34,449 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:14:34,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:14:34,572 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:14:34,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:14:34 WrapperNode [2020-08-22 22:14:34,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:14:34,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:14:34,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:14:34,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:14:34,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:14:34" (1/1) ... [2020-08-22 22:14:34,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:14:34" (1/1) ... [2020-08-22 22:14:34,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:14:34" (1/1) ... [2020-08-22 22:14:34,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:14:34" (1/1) ... [2020-08-22 22:14:34,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:14:34" (1/1) ... [2020-08-22 22:14:34,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:14:34" (1/1) ... [2020-08-22 22:14:34,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:14:34" (1/1) ... [2020-08-22 22:14:34,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:14:34,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:14:34,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:14:34,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:14:34,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:14:34" (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 22:14:34,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:14:34,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:14:34,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 22:14:34,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-22 22:14:34,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-22 22:14:34,730 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-22 22:14:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-22 22:14:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-22 22:14:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-22 22:14:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-22 22:14:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-22 22:14:34,731 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-22 22:14:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-22 22:14:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-22 22:14:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-22 22:14:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-22 22:14:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-22 22:14:34,732 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-22 22:14:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-22 22:14:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-22 22:14:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-22 22:14:34,733 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:14:34,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:14:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 22:14:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 22:14:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 22:14:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 22:14:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 22:14:34,734 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 22:14:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 22:14:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 22:14:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 22:14:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 22:14:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 22:14:34,735 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 22:14:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 22:14:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 22:14:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 22:14:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 22:14:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-22 22:14:34,736 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-22 22:14:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 22:14:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 22:14:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 22:14:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 22:14:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 22:14:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 22:14:34,737 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 22:14:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 22:14:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 22:14:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 22:14:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 22:14:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 22:14:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 22:14:34,738 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 22:14:34,739 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 22:14:34,739 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 22:14:34,739 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 22:14:34,739 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 22:14:34,739 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 22:14:34,739 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 22:14:34,739 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 22:14:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 22:14:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 22:14:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 22:14:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 22:14:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 22:14:34,740 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 22:14:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 22:14:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 22:14:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 22:14:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 22:14:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 22:14:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 22:14:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 22:14:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 22:14:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 22:14:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 22:14:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 22:14:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 22:14:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 22:14:34,743 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 22:14:34,743 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 22:14:34,743 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 22:14:34,743 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 22:14:34,743 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 22:14:34,743 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 22:14:34,743 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 22:14:34,744 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 22:14:34,744 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 22:14:34,744 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 22:14:34,744 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 22:14:34,744 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 22:14:34,744 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 22:14:34,745 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 22:14:34,745 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 22:14:34,745 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 22:14:34,745 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 22:14:34,745 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 22:14:34,745 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 22:14:34,745 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 22:14:34,746 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 22:14:34,746 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 22:14:34,746 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 22:14:34,746 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 22:14:34,746 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 22:14:34,746 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 22:14:34,746 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 22:14:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 22:14:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 22:14:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 22:14:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 22:14:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 22:14:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 22:14:34,747 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 22:14:34,748 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 22:14:34,748 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 22:14:34,748 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 22:14:34,748 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 22:14:34,748 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 22:14:34,748 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 22:14:34,748 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 22:14:34,749 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 22:14:34,749 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 22:14:34,749 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 22:14:34,749 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 22:14:34,749 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 22:14:34,749 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 22:14:34,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:14:34,750 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-22 22:14:34,750 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-22 22:14:34,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 22:14:34,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 22:14:34,751 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-22 22:14:34,751 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-22 22:14:34,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 22:14:34,751 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-22 22:14:34,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 22:14:34,751 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 22:14:34,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 22:14:34,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 22:14:34,752 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-22 22:14:34,752 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-22 22:14:34,752 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-22 22:14:34,753 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-22 22:14:34,753 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-22 22:14:34,753 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-22 22:14:34,753 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-22 22:14:34,753 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-22 22:14:34,753 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-22 22:14:34,754 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-22 22:14:34,754 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-22 22:14:34,754 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:14:34,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:14:34,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:14:35,747 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:14:35,748 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-22 22:14:35,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:14:35 BoogieIcfgContainer [2020-08-22 22:14:35,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:14:35,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:14:35,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:14:35,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:14:35,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:14:33" (1/3) ... [2020-08-22 22:14:35,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75364ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:14:35, skipping insertion in model container [2020-08-22 22:14:35,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:14:34" (2/3) ... [2020-08-22 22:14:35,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75364ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:14:35, skipping insertion in model container [2020-08-22 22:14:35,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:14:35" (3/3) ... [2020-08-22 22:14:35,763 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-08-22 22:14:35,775 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:14:35,785 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 22:14:35,800 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 22:14:35,825 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:14:35,826 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:14:35,826 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:14:35,826 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:14:35,826 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:14:35,827 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:14:35,827 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:14:35,827 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:14:35,848 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states. [2020-08-22 22:14:35,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-22 22:14:35,864 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:14:35,865 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 22:14:35,866 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:14:35,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:14:35,873 INFO L82 PathProgramCache]: Analyzing trace with hash 575468621, now seen corresponding path program 1 times [2020-08-22 22:14:35,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:14:35,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818467739] [2020-08-22 22:14:35,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:14:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:36,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:14:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:36,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 22:14:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:36,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:14:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:36,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:14:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:36,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:36,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:36,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:14:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:36,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:36,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:36,531 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 22:14:36,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818467739] [2020-08-22 22:14:36,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:14:36,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:14:36,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832053160] [2020-08-22 22:14:36,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:14:36,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:14:36,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:14:36,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:14:36,559 INFO L87 Difference]: Start difference. First operand 276 states. Second operand 4 states. [2020-08-22 22:14:37,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:14:37,267 INFO L93 Difference]: Finished difference Result 568 states and 767 transitions. [2020-08-22 22:14:37,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 22:14:37,269 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-08-22 22:14:37,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:14:37,286 INFO L225 Difference]: With dead ends: 568 [2020-08-22 22:14:37,286 INFO L226 Difference]: Without dead ends: 275 [2020-08-22 22:14:37,294 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 22:14:37,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-08-22 22:14:37,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 255. [2020-08-22 22:14:37,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-08-22 22:14:37,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 284 transitions. [2020-08-22 22:14:37,379 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 284 transitions. Word has length 85 [2020-08-22 22:14:37,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:14:37,380 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 284 transitions. [2020-08-22 22:14:37,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:14:37,380 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 284 transitions. [2020-08-22 22:14:37,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-22 22:14:37,385 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:14:37,385 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 22:14:37,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:14:37,386 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:14:37,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:14:37,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1893520380, now seen corresponding path program 1 times [2020-08-22 22:14:37,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:14:37,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855401653] [2020-08-22 22:14:37,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:14:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:37,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:14:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:37,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 22:14:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:37,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:14:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:37,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:14:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:37,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:37,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:37,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:14:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:37,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:37,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:37,845 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 22:14:37,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855401653] [2020-08-22 22:14:37,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:14:37,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 22:14:37,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727297609] [2020-08-22 22:14:37,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 22:14:37,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:14:37,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 22:14:37,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-22 22:14:37,850 INFO L87 Difference]: Start difference. First operand 255 states and 284 transitions. Second operand 13 states. [2020-08-22 22:14:39,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:14:39,629 INFO L93 Difference]: Finished difference Result 542 states and 621 transitions. [2020-08-22 22:14:39,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 22:14:39,630 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 87 [2020-08-22 22:14:39,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:14:39,634 INFO L225 Difference]: With dead ends: 542 [2020-08-22 22:14:39,635 INFO L226 Difference]: Without dead ends: 296 [2020-08-22 22:14:39,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-08-22 22:14:39,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-08-22 22:14:39,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 276. [2020-08-22 22:14:39,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-08-22 22:14:39,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 307 transitions. [2020-08-22 22:14:39,675 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 307 transitions. Word has length 87 [2020-08-22 22:14:39,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:14:39,676 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 307 transitions. [2020-08-22 22:14:39,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 22:14:39,676 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 307 transitions. [2020-08-22 22:14:39,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-08-22 22:14:39,686 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:14:39,687 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 22:14:39,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:14:39,687 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:14:39,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:14:39,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1671014528, now seen corresponding path program 1 times [2020-08-22 22:14:39,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:14:39,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167586936] [2020-08-22 22:14:39,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:14:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:39,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:14:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:39,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 22:14:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:40,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:14:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:40,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:14:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:40,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:40,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:40,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 22:14:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:40,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:14:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:40,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:14:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:40,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:40,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:40,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:14:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:40,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:40,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:40,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-22 22:14:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:41,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:41,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:41,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 22:14:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:41,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:14:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:41,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:14:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:41,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:41,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:41,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:14:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:41,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:41,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 137 proven. 47 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-08-22 22:14:42,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167586936] [2020-08-22 22:14:42,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:14:42,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-08-22 22:14:42,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921392767] [2020-08-22 22:14:42,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-08-22 22:14:42,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:14:42,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-08-22 22:14:42,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1392, Unknown=0, NotChecked=0, Total=1482 [2020-08-22 22:14:42,530 INFO L87 Difference]: Start difference. First operand 276 states and 307 transitions. Second operand 39 states. [2020-08-22 22:14:49,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:14:49,359 INFO L93 Difference]: Finished difference Result 574 states and 655 transitions. [2020-08-22 22:14:49,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-08-22 22:14:49,360 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 235 [2020-08-22 22:14:49,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:14:49,365 INFO L225 Difference]: With dead ends: 574 [2020-08-22 22:14:49,366 INFO L226 Difference]: Without dead ends: 311 [2020-08-22 22:14:49,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=327, Invalid=4785, Unknown=0, NotChecked=0, Total=5112 [2020-08-22 22:14:49,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-08-22 22:14:49,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 286. [2020-08-22 22:14:49,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-08-22 22:14:49,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 319 transitions. [2020-08-22 22:14:49,413 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 319 transitions. Word has length 235 [2020-08-22 22:14:49,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:14:49,414 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 319 transitions. [2020-08-22 22:14:49,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-08-22 22:14:49,414 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 319 transitions. [2020-08-22 22:14:49,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-08-22 22:14:49,418 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:14:49,419 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 22:14:49,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:14:49,419 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:14:49,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:14:49,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1561006854, now seen corresponding path program 1 times [2020-08-22 22:14:49,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:14:49,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702468630] [2020-08-22 22:14:49,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:14:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:49,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:14:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:49,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 22:14:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:49,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:14:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:50,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:14:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:50,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:50,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:50,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 22:14:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:50,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:14:50,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:50,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:14:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:50,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:50,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:50,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:14:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:50,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:50,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:50,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 22:14:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:50,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:50,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:51,356 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-08-22 22:14:51,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 22:14:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:51,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:14:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:51,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:14:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:51,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:51,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:51,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:14:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:51,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:51,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:51,753 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 38 proven. 38 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-08-22 22:14:51,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702468630] [2020-08-22 22:14:51,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:14:51,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-08-22 22:14:51,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330962732] [2020-08-22 22:14:51,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-08-22 22:14:51,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:14:51,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-08-22 22:14:51,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2020-08-22 22:14:51,757 INFO L87 Difference]: Start difference. First operand 286 states and 319 transitions. Second operand 32 states. [2020-08-22 22:14:52,840 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-08-22 22:14:53,579 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-08-22 22:14:53,761 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-08-22 22:14:57,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:14:57,840 INFO L93 Difference]: Finished difference Result 588 states and 663 transitions. [2020-08-22 22:14:57,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-22 22:14:57,842 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 237 [2020-08-22 22:14:57,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:14:57,847 INFO L225 Difference]: With dead ends: 588 [2020-08-22 22:14:57,847 INFO L226 Difference]: Without dead ends: 317 [2020-08-22 22:14:57,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=256, Invalid=2824, Unknown=0, NotChecked=0, Total=3080 [2020-08-22 22:14:57,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-08-22 22:14:57,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 295. [2020-08-22 22:14:57,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-08-22 22:14:57,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 329 transitions. [2020-08-22 22:14:57,906 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 329 transitions. Word has length 237 [2020-08-22 22:14:57,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:14:57,907 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 329 transitions. [2020-08-22 22:14:57,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-08-22 22:14:57,907 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 329 transitions. [2020-08-22 22:14:57,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-08-22 22:14:57,911 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:14:57,911 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 22:14:57,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 22:14:57,912 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:14:57,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:14:57,912 INFO L82 PathProgramCache]: Analyzing trace with hash -978473208, now seen corresponding path program 1 times [2020-08-22 22:14:57,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:14:57,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170537781] [2020-08-22 22:14:57,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:14:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:58,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:14:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:58,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 22:14:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:58,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:14:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:58,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:14:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:58,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:58,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,047 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-08-22 22:14:59,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 22:14:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:14:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:14:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:14:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 22:14:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 22:14:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:14:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:14:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:14:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:14:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:14:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:14:59,636 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 25 proven. 40 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2020-08-22 22:14:59,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170537781] [2020-08-22 22:14:59,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:14:59,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-22 22:14:59,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851642345] [2020-08-22 22:14:59,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-22 22:14:59,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:14:59,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-22 22:14:59,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-08-22 22:14:59,639 INFO L87 Difference]: Start difference. First operand 295 states and 329 transitions. Second operand 23 states. [2020-08-22 22:15:00,011 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-08-22 22:15:00,345 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-08-22 22:15:01,331 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-08-22 22:15:02,024 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-08-22 22:15:02,880 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-08-22 22:15:03,493 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-08-22 22:15:07,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:15:07,498 INFO L93 Difference]: Finished difference Result 592 states and 661 transitions. [2020-08-22 22:15:07,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 22:15:07,499 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 239 [2020-08-22 22:15:07,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:15:07,503 INFO L225 Difference]: With dead ends: 592 [2020-08-22 22:15:07,504 INFO L226 Difference]: Without dead ends: 315 [2020-08-22 22:15:07,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=117, Invalid=1005, Unknown=0, NotChecked=0, Total=1122 [2020-08-22 22:15:07,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-08-22 22:15:07,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 295. [2020-08-22 22:15:07,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-08-22 22:15:07,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 327 transitions. [2020-08-22 22:15:07,535 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 327 transitions. Word has length 239 [2020-08-22 22:15:07,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:15:07,535 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 327 transitions. [2020-08-22 22:15:07,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-22 22:15:07,536 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 327 transitions. [2020-08-22 22:15:07,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-08-22 22:15:07,539 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:15:07,540 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 22:15:07,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 22:15:07,540 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:15:07,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:15:07,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1063198871, now seen corresponding path program 1 times [2020-08-22 22:15:07,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:15:07,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336665449] [2020-08-22 22:15:07,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:15:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:07,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 22:15:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:08,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:08,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:15:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:08,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:08,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:08,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 22:15:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:08,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:08,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:15:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:08,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:08,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:08,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:15:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:08,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:08,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:08,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 22:15:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:08,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:09,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:09,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 22:15:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:09,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:09,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:15:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:09,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:09,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:09,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:15:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:09,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:09,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:09,738 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2020-08-22 22:15:09,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336665449] [2020-08-22 22:15:09,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 22:15:09,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-08-22 22:15:09,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650828978] [2020-08-22 22:15:09,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-22 22:15:09,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:15:09,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-22 22:15:09,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-08-22 22:15:09,746 INFO L87 Difference]: Start difference. First operand 295 states and 327 transitions. Second operand 24 states. [2020-08-22 22:15:13,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:15:13,840 INFO L93 Difference]: Finished difference Result 527 states and 592 transitions. [2020-08-22 22:15:13,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-22 22:15:13,847 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 238 [2020-08-22 22:15:13,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:15:13,850 INFO L225 Difference]: With dead ends: 527 [2020-08-22 22:15:13,851 INFO L226 Difference]: Without dead ends: 417 [2020-08-22 22:15:13,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=169, Invalid=1811, Unknown=0, NotChecked=0, Total=1980 [2020-08-22 22:15:13,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-22 22:15:13,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 332. [2020-08-22 22:15:13,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-08-22 22:15:13,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 369 transitions. [2020-08-22 22:15:13,889 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 369 transitions. Word has length 238 [2020-08-22 22:15:13,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:15:13,890 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 369 transitions. [2020-08-22 22:15:13,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-22 22:15:13,891 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 369 transitions. [2020-08-22 22:15:13,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-08-22 22:15:13,894 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:15:13,894 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 22:15:13,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 22:15:13,895 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:15:13,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:15:13,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1682472288, now seen corresponding path program 1 times [2020-08-22 22:15:13,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:15:13,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478659436] [2020-08-22 22:15:13,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:15:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:14,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:14,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 22:15:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:14,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:15,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:15:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:15,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:15,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:15,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 22:15:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:15,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:15,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-22 22:15:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:15,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:15,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:15,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 22:15:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:15,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:15,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:15,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 22:15:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:15,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 22:15:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:16,775 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-08-22 22:15:16,997 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-08-22 22:15:17,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 22:15:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:18,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-22 22:15:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:15:19,690 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-08-22 22:15:19,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:15:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:16,836 WARN L193 SmtUtils]: Spent 51.07 s on a formula simplification. DAG size of input: 926 DAG size of output: 48