/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 14:29:03,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 14:29:03,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 14:29:03,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 14:29:03,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 14:29:03,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 14:29:03,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 14:29:03,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 14:29:03,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 14:29:03,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 14:29:03,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 14:29:03,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 14:29:03,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 14:29:03,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 14:29:03,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 14:29:03,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 14:29:03,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 14:29:03,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 14:29:03,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 14:29:03,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 14:29:03,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 14:29:03,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 14:29:03,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 14:29:03,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 14:29:03,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 14:29:03,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 14:29:03,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 14:29:03,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 14:29:03,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 14:29:03,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 14:29:03,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 14:29:03,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 14:29:03,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 14:29:03,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 14:29:03,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 14:29:03,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 14:29:03,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 14:29:03,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 14:29:03,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 14:29:03,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 14:29:03,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 14:29:03,752 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 14:29:03,775 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 14:29:03,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 14:29:03,776 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 14:29:03,776 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 14:29:03,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 14:29:03,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 14:29:03,777 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 14:29:03,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 14:29:03,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 14:29:03,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 14:29:03,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 14:29:03,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 14:29:03,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 14:29:03,778 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 14:29:03,778 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 14:29:03,778 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 14:29:03,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 14:29:03,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 14:29:03,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 14:29:03,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 14:29:03,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 14:29:03,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:29:03,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 14:29:03,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 14:29:03,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 14:29:03,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 14:29:03,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 14:29:03,780 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 14:29:03,780 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 14:29:03,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 14:29:03,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 14:29:03,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 14:29:03,781 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 14:29:03,781 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 14:29:03,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 14:29:03,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 14:29:03,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 14:29:03,972 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 14:29:03,973 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 14:29:03,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2022-01-10 14:29:04,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/733f8cf43/e579b41254b445cf82f5d39f9814451c/FLAGda21c463f [2022-01-10 14:29:04,386 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 14:29:04,386 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2022-01-10 14:29:04,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/733f8cf43/e579b41254b445cf82f5d39f9814451c/FLAGda21c463f [2022-01-10 14:29:04,402 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/733f8cf43/e579b41254b445cf82f5d39f9814451c [2022-01-10 14:29:04,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 14:29:04,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 14:29:04,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 14:29:04,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 14:29:04,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 14:29:04,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:29:04" (1/1) ... [2022-01-10 14:29:04,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e1aaed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:04, skipping insertion in model container [2022-01-10 14:29:04,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:29:04" (1/1) ... [2022-01-10 14:29:04,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 14:29:04,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 14:29:04,700 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c[15516,15529] [2022-01-10 14:29:04,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:29:04,725 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 14:29:04,805 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c[15516,15529] [2022-01-10 14:29:04,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:29:04,837 INFO L208 MainTranslator]: Completed translation [2022-01-10 14:29:04,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:04 WrapperNode [2022-01-10 14:29:04,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 14:29:04,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 14:29:04,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 14:29:04,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 14:29:04,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:04" (1/1) ... [2022-01-10 14:29:04,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:04" (1/1) ... [2022-01-10 14:29:04,901 INFO L137 Inliner]: procedures = 21, calls = 293, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 773 [2022-01-10 14:29:04,901 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 14:29:04,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 14:29:04,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 14:29:04,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 14:29:04,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:04" (1/1) ... [2022-01-10 14:29:04,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:04" (1/1) ... [2022-01-10 14:29:04,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:04" (1/1) ... [2022-01-10 14:29:04,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:04" (1/1) ... [2022-01-10 14:29:04,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:04" (1/1) ... [2022-01-10 14:29:04,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:04" (1/1) ... [2022-01-10 14:29:04,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:04" (1/1) ... [2022-01-10 14:29:04,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 14:29:04,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 14:29:04,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 14:29:04,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 14:29:04,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:04" (1/1) ... [2022-01-10 14:29:04,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:29:04,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:29:04,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 14:29:04,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 14:29:05,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-01-10 14:29:05,034 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2022-01-10 14:29:05,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 14:29:05,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 14:29:05,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-01-10 14:29:05,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 14:29:05,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 14:29:05,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 14:29:05,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 14:29:05,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 14:29:05,143 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 14:29:05,144 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 14:29:05,894 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 14:29:05,898 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 14:29:05,898 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 14:29:05,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:29:05 BoogieIcfgContainer [2022-01-10 14:29:05,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 14:29:05,900 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 14:29:05,900 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 14:29:05,901 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 14:29:05,902 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:29:05" (1/1) ... [2022-01-10 14:29:06,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:29:06 BasicIcfg [2022-01-10 14:29:06,027 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 14:29:06,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 14:29:06,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 14:29:06,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 14:29:06,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:29:04" (1/4) ... [2022-01-10 14:29:06,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213ff98b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:29:06, skipping insertion in model container [2022-01-10 14:29:06,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:29:04" (2/4) ... [2022-01-10 14:29:06,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213ff98b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:29:06, skipping insertion in model container [2022-01-10 14:29:06,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:29:05" (3/4) ... [2022-01-10 14:29:06,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213ff98b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:29:06, skipping insertion in model container [2022-01-10 14:29:06,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:29:06" (4/4) ... [2022-01-10 14:29:06,031 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.cTransformedIcfg [2022-01-10 14:29:06,034 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 14:29:06,034 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 14:29:06,075 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 14:29:06,081 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 14:29:06,081 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 14:29:06,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 49 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:29:06,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 14:29:06,095 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:29:06,096 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2022-01-10 14:29:06,096 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:29:06,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:29:06,100 INFO L85 PathProgramCache]: Analyzing trace with hash -690038824, now seen corresponding path program 1 times [2022-01-10 14:29:06,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:29:06,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268683923] [2022-01-10 14:29:06,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:29:06,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:29:06,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:29:06,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:29:06,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:29:06,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268683923] [2022-01-10 14:29:06,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268683923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:29:06,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:29:06,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-10 14:29:06,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466755971] [2022-01-10 14:29:06,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:29:06,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 14:29:06,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:29:06,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 14:29:06,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-01-10 14:29:06,894 INFO L87 Difference]: Start difference. First operand has 50 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 49 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:29:08,927 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 14:29:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:29:09,781 INFO L93 Difference]: Finished difference Result 95 states and 129 transitions. [2022-01-10 14:29:09,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 14:29:09,785 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-01-10 14:29:09,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:29:09,790 INFO L225 Difference]: With dead ends: 95 [2022-01-10 14:29:09,790 INFO L226 Difference]: Without dead ends: 53 [2022-01-10 14:29:09,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2022-01-10 14:29:09,794 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 199 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-10 14:29:09,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 359 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 339 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-01-10 14:29:09,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-01-10 14:29:09,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2022-01-10 14:29:09,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:29:09,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2022-01-10 14:29:09,829 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 44 [2022-01-10 14:29:09,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:29:09,829 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2022-01-10 14:29:09,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:29:09,829 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2022-01-10 14:29:09,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 14:29:09,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:29:09,830 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-01-10 14:29:09,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 14:29:09,831 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:29:09,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:29:09,833 INFO L85 PathProgramCache]: Analyzing trace with hash -2027351877, now seen corresponding path program 1 times [2022-01-10 14:29:09,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:29:09,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826866889] [2022-01-10 14:29:09,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:29:09,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:29:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:29:10,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:29:10,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:29:10,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826866889] [2022-01-10 14:29:10,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826866889] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:29:10,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664848881] [2022-01-10 14:29:10,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:29:10,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:29:10,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:29:10,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 14:29:10,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 14:29:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:29:10,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-10 14:29:10,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:29:11,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:29:11,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:29:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:29:14,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664848881] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:29:14,249 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:29:14,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 23, 24] total 55 [2022-01-10 14:29:14,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21485370] [2022-01-10 14:29:14,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:29:14,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-10 14:29:14,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:29:14,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-10 14:29:14,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=2167, Unknown=0, NotChecked=0, Total=2970 [2022-01-10 14:29:14,253 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 55 states, 55 states have (on average 2.418181818181818) internal successors, (133), 55 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:29:16,290 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-01-10 14:29:25,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:29:25,255 INFO L93 Difference]: Finished difference Result 115 states and 126 transitions. [2022-01-10 14:29:25,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-10 14:29:25,256 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.418181818181818) internal successors, (133), 55 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-01-10 14:29:25,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:29:25,258 INFO L225 Difference]: With dead ends: 115 [2022-01-10 14:29:25,258 INFO L226 Difference]: Without dead ends: 112 [2022-01-10 14:29:25,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1766 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1439, Invalid=3963, Unknown=0, NotChecked=0, Total=5402 [2022-01-10 14:29:25,261 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 580 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 336 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-01-10 14:29:25,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 62 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1009 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-01-10 14:29:25,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-01-10 14:29:25,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2022-01-10 14:29:25,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.0091743119266054) internal successors, (110), 109 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:29:25,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2022-01-10 14:29:25,269 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 49 [2022-01-10 14:29:25,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:29:25,269 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2022-01-10 14:29:25,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.418181818181818) internal successors, (133), 55 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:29:25,270 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2022-01-10 14:29:25,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 14:29:25,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:29:25,272 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 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, 1, 1, 1] [2022-01-10 14:29:25,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 14:29:25,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:29:25,480 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:29:25,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:29:25,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1577139579, now seen corresponding path program 2 times [2022-01-10 14:29:25,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:29:25,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731981598] [2022-01-10 14:29:25,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:29:25,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:29:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:29:26,496 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:29:26,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:29:26,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731981598] [2022-01-10 14:29:26,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731981598] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:29:26,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473154501] [2022-01-10 14:29:26,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 14:29:26,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:29:26,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:29:26,502 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 14:29:26,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 14:29:28,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 14:29:28,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 14:29:28,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 2608 conjuncts, 100 conjunts are in the unsatisfiable core [2022-01-10 14:29:28,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:29:29,821 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:29:29,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:29:44,021 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:29:44,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473154501] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:29:44,022 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:29:44,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 40, 51] total 112 [2022-01-10 14:29:44,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645625793] [2022-01-10 14:29:44,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:29:44,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2022-01-10 14:29:44,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:29:44,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2022-01-10 14:29:44,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3180, Invalid=9252, Unknown=0, NotChecked=0, Total=12432 [2022-01-10 14:29:44,031 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand has 112 states, 112 states have (on average 2.8125) internal successors, (315), 112 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:29:46,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []