/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_NONE.epf -i ../../../trunk/examples/svcomp/array-examples/standard_init7_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 21:08:45,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 21:08:45,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 21:08:45,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 21:08:45,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 21:08:45,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 21:08:45,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 21:08:45,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 21:08:45,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 21:08:45,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 21:08:45,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 21:08:45,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 21:08:45,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 21:08:45,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 21:08:45,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 21:08:45,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 21:08:45,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 21:08:45,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 21:08:45,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 21:08:45,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 21:08:45,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 21:08:45,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 21:08:45,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 21:08:45,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 21:08:45,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 21:08:45,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 21:08:45,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 21:08:45,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 21:08:45,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 21:08:45,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 21:08:45,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 21:08:45,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 21:08:45,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 21:08:45,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 21:08:45,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 21:08:45,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 21:08:45,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 21:08:45,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 21:08:45,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 21:08:45,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 21:08:45,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 21:08:45,609 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 21:08:45,636 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 21:08:45,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 21:08:45,636 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 21:08:45,637 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 21:08:45,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 21:08:45,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 21:08:45,637 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 21:08:45,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 21:08:45,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 21:08:45,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 21:08:45,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 21:08:45,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 21:08:45,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 21:08:45,638 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 21:08:45,638 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 21:08:45,638 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 21:08:45,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 21:08:45,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 21:08:45,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 21:08:45,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 21:08:45,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 21:08:45,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:08:45,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 21:08:45,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 21:08:45,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 21:08:45,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 21:08:45,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 21:08:45,639 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 21:08:45,639 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 21:08:45,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 21:08:45,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 21:08:45,640 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 21:08:45,640 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 21:08:45,640 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 21:08:45,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 21:08:45,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 21:08:45,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 21:08:45,832 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 21:08:45,839 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 21:08:45,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init7_ground-1.i [2022-01-10 21:08:45,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc642bd8/02eedb0cadba4029804275cb781c180e/FLAG988b159bf [2022-01-10 21:08:46,244 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 21:08:46,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init7_ground-1.i [2022-01-10 21:08:46,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc642bd8/02eedb0cadba4029804275cb781c180e/FLAG988b159bf [2022-01-10 21:08:46,270 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc642bd8/02eedb0cadba4029804275cb781c180e [2022-01-10 21:08:46,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 21:08:46,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 21:08:46,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 21:08:46,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 21:08:46,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 21:08:46,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:08:46" (1/1) ... [2022-01-10 21:08:46,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3430aab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:08:46, skipping insertion in model container [2022-01-10 21:08:46,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:08:46" (1/1) ... [2022-01-10 21:08:46,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 21:08:46,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 21:08:46,422 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init7_ground-1.i[816,829] [2022-01-10 21:08:46,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:08:46,438 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 21:08:46,446 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_init7_ground-1.i[816,829] [2022-01-10 21:08:46,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:08:46,465 INFO L208 MainTranslator]: Completed translation [2022-01-10 21:08:46,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:08:46 WrapperNode [2022-01-10 21:08:46,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 21:08:46,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 21:08:46,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 21:08:46,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 21:08:46,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:08:46" (1/1) ... [2022-01-10 21:08:46,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:08:46" (1/1) ... [2022-01-10 21:08:46,490 INFO L137 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 82 [2022-01-10 21:08:46,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 21:08:46,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 21:08:46,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 21:08:46,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 21:08:46,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:08:46" (1/1) ... [2022-01-10 21:08:46,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:08:46" (1/1) ... [2022-01-10 21:08:46,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:08:46" (1/1) ... [2022-01-10 21:08:46,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:08:46" (1/1) ... [2022-01-10 21:08:46,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:08:46" (1/1) ... [2022-01-10 21:08:46,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:08:46" (1/1) ... [2022-01-10 21:08:46,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:08:46" (1/1) ... [2022-01-10 21:08:46,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 21:08:46,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 21:08:46,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 21:08:46,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 21:08:46,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:08:46" (1/1) ... [2022-01-10 21:08:46,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:08:46,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:08:46,528 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 21:08:46,536 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 21:08:46,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 21:08:46,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 21:08:46,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 21:08:46,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 21:08:46,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 21:08:46,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 21:08:46,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 21:08:46,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 21:08:46,597 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 21:08:46,598 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 21:08:46,754 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 21:08:46,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 21:08:46,758 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-10 21:08:46,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:08:46 BoogieIcfgContainer [2022-01-10 21:08:46,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 21:08:46,760 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 21:08:46,760 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 21:08:46,762 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 21:08:46,763 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:08:46" (1/1) ... [2022-01-10 21:08:46,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:08:46 BasicIcfg [2022-01-10 21:08:46,851 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 21:08:46,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 21:08:46,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 21:08:46,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 21:08:46,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:08:46" (1/4) ... [2022-01-10 21:08:46,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cb65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:08:46, skipping insertion in model container [2022-01-10 21:08:46,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:08:46" (2/4) ... [2022-01-10 21:08:46,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cb65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:08:46, skipping insertion in model container [2022-01-10 21:08:46,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:08:46" (3/4) ... [2022-01-10 21:08:46,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31cb65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:08:46, skipping insertion in model container [2022-01-10 21:08:46,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:08:46" (4/4) ... [2022-01-10 21:08:46,856 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init7_ground-1.iTransformedIcfg [2022-01-10 21:08:46,859 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 21:08:46,859 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 21:08:46,886 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 21:08:46,890 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 21:08:46,891 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 21:08:46,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.75) internal successors, (42), 25 states have internal predecessors, (42), 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 21:08:46,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 21:08:46,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:08:46,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:08:46,903 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:08:46,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:08:46,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1572493831, now seen corresponding path program 1 times [2022-01-10 21:08:46,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:08:46,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498763664] [2022-01-10 21:08:46,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:08:46,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:08:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:08:47,065 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 21:08:47,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:08:47,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498763664] [2022-01-10 21:08:47,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498763664] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:08:47,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:08:47,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:08:47,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614687610] [2022-01-10 21:08:47,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:08:47,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 21:08:47,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:08:47,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 21:08:47,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 21:08:47,098 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.75) internal successors, (42), 25 states have internal predecessors, (42), 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 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 21:08:47,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:08:47,117 INFO L93 Difference]: Finished difference Result 49 states and 79 transitions. [2022-01-10 21:08:47,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 21:08:47,118 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2022-01-10 21:08:47,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:08:47,123 INFO L225 Difference]: With dead ends: 49 [2022-01-10 21:08:47,123 INFO L226 Difference]: Without dead ends: 22 [2022-01-10 21:08:47,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 21:08:47,129 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:08:47,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 21:08:47,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-01-10 21:08:47,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-01-10 21:08:47,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 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 21:08:47,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2022-01-10 21:08:47,153 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 19 [2022-01-10 21:08:47,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:08:47,153 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2022-01-10 21:08:47,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 21:08:47,154 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2022-01-10 21:08:47,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 21:08:47,155 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:08:47,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:08:47,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 21:08:47,156 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:08:47,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:08:47,159 INFO L85 PathProgramCache]: Analyzing trace with hash -971081780, now seen corresponding path program 1 times [2022-01-10 21:08:47,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:08:47,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235227887] [2022-01-10 21:08:47,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:08:47,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:08:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:08:47,280 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 21:08:47,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:08:47,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235227887] [2022-01-10 21:08:47,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235227887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:08:47,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:08:47,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 21:08:47,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301176912] [2022-01-10 21:08:47,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:08:47,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 21:08:47,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:08:47,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 21:08:47,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:08:47,283 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 21:08:47,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:08:47,334 INFO L93 Difference]: Finished difference Result 48 states and 68 transitions. [2022-01-10 21:08:47,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 21:08:47,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2022-01-10 21:08:47,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:08:47,335 INFO L225 Difference]: With dead ends: 48 [2022-01-10 21:08:47,335 INFO L226 Difference]: Without dead ends: 29 [2022-01-10 21:08:47,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 21:08:47,336 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:08:47,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 21:08:47,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-10 21:08:47,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-01-10 21:08:47,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 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 21:08:47,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-01-10 21:08:47,346 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 19 [2022-01-10 21:08:47,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:08:47,346 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-01-10 21:08:47,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 21:08:47,350 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-01-10 21:08:47,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 21:08:47,353 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:08:47,353 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] [2022-01-10 21:08:47,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 21:08:47,353 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:08:47,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:08:47,354 INFO L85 PathProgramCache]: Analyzing trace with hash 467118547, now seen corresponding path program 1 times [2022-01-10 21:08:47,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:08:47,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858120047] [2022-01-10 21:08:47,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:08:47,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:08:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:08:47,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 21:08:47,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:08:47,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858120047] [2022-01-10 21:08:47,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858120047] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:08:47,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799034569] [2022-01-10 21:08:47,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:08:47,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:08:47,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:08:47,487 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 21:08:47,488 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 21:08:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:08:47,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 21:08:47,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:08:47,748 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 21:08:47,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:08:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 21:08:47,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799034569] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:08:47,831 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 21:08:47,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 21:08:47,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719277340] [2022-01-10 21:08:47,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 21:08:47,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 21:08:47,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:08:47,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 21:08:47,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 21:08:47,833 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 21:08:48,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:08:48,185 INFO L93 Difference]: Finished difference Result 75 states and 109 transitions. [2022-01-10 21:08:48,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 21:08:48,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 26 [2022-01-10 21:08:48,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:08:48,187 INFO L225 Difference]: With dead ends: 75 [2022-01-10 21:08:48,187 INFO L226 Difference]: Without dead ends: 50 [2022-01-10 21:08:48,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-10 21:08:48,188 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 21:08:48,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 21:08:48,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-10 21:08:48,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-01-10 21:08:48,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.163265306122449) internal successors, (57), 49 states have internal predecessors, (57), 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 21:08:48,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2022-01-10 21:08:48,205 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 26 [2022-01-10 21:08:48,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:08:48,205 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2022-01-10 21:08:48,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 21:08:48,205 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2022-01-10 21:08:48,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 21:08:48,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:08:48,207 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:08:48,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 21:08:48,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:08:48,430 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:08:48,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:08:48,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1047120884, now seen corresponding path program 2 times [2022-01-10 21:08:48,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:08:48,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007769532] [2022-01-10 21:08:48,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:08:48,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:08:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:08:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-10 21:08:48,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:08:48,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007769532] [2022-01-10 21:08:48,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007769532] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:08:48,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321935438] [2022-01-10 21:08:48,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 21:08:48,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:08:48,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:08:48,777 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 21:08:48,778 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 21:08:49,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 21:08:49,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 21:08:49,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-10 21:08:49,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:08:53,728 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 21:08:53,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:08:55,344 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-10 21:08:55,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321935438] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:08:55,345 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 21:08:55,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 17 [2022-01-10 21:08:55,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390043580] [2022-01-10 21:08:55,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 21:08:55,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 21:08:55,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:08:55,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 21:08:55,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2022-01-10 21:08:55,348 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 17 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 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 21:09:02,284 WARN L228 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 45 DAG size of output: 35 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 21:09:18,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:09:18,864 INFO L93 Difference]: Finished difference Result 118 states and 155 transitions. [2022-01-10 21:09:18,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 21:09:18,864 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 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 47 [2022-01-10 21:09:18,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:09:18,865 INFO L225 Difference]: With dead ends: 118 [2022-01-10 21:09:18,865 INFO L226 Difference]: Without dead ends: 75 [2022-01-10 21:09:18,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 85 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=225, Invalid=422, Unknown=3, NotChecked=0, Total=650 [2022-01-10 21:09:18,866 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-01-10 21:09:18,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 69 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 178 Invalid, 0 Unknown, 26 Unchecked, 3.8s Time] [2022-01-10 21:09:18,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-01-10 21:09:18,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2022-01-10 21:09:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.1232876712328768) internal successors, (82), 73 states have internal predecessors, (82), 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 21:09:18,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2022-01-10 21:09:18,877 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 47 [2022-01-10 21:09:18,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:09:18,878 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2022-01-10 21:09:18,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 17 states have internal predecessors, (68), 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 21:09:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2022-01-10 21:09:18,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 21:09:18,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:09:18,879 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:09:18,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 21:09:19,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-10 21:09:19,085 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:09:19,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:09:19,086 INFO L85 PathProgramCache]: Analyzing trace with hash 392427340, now seen corresponding path program 3 times [2022-01-10 21:09:19,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:09:19,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805595493] [2022-01-10 21:09:19,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:09:19,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:09:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:09:19,465 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-01-10 21:09:19,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:09:19,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805595493] [2022-01-10 21:09:19,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805595493] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 21:09:19,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96308058] [2022-01-10 21:09:19,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 21:09:19,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:09:19,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:09:19,467 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:09:19,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 21:09:59,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-10 21:09:59,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 21:09:59,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-10 21:09:59,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:09:59,431 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-01-10 21:09:59,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:10:01,246 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-01-10 21:10:01,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96308058] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:10:01,247 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 21:10:01,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-01-10 21:10:01,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921578717] [2022-01-10 21:10:01,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 21:10:01,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-10 21:10:01,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:10:01,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-10 21:10:01,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2022-01-10 21:10:01,249 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 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)