/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/product-lines/elevator_spec14_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:43:09,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:43:09,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:43:09,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:43:09,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:43:09,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:43:09,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:43:09,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:43:09,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:43:09,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:43:09,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:43:09,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:43:09,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:43:09,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:43:09,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:43:09,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:43:09,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:43:09,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:43:09,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:43:09,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:43:09,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:43:09,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:43:09,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:43:09,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:43:09,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:43:09,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:43:09,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:43:09,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:43:09,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:43:09,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:43:09,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:43:09,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:43:09,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:43:09,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:43:09,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:43:09,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:43:09,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:43:09,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:43:09,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:43:09,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:43:09,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:43:09,623 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 23:43:09,648 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:43:09,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:43:09,649 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:43:09,649 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:43:09,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:43:09,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:43:09,650 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:43:09,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:43:09,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:43:09,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:43:09,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:43:09,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:43:09,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:43:09,651 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:43:09,652 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:43:09,652 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:43:09,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:43:09,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:43:09,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:43:09,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:43:09,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:43:09,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:43:09,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:43:09,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:43:09,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:43:09,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:43:09,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:43:09,653 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:43:09,653 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:43:09,653 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:43:09,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:43:09,654 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:43:09,654 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:43:09,654 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:43:09,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:43:09,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:43:09,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:43:09,890 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:43:09,891 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:43:09,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product24.cil.c [2022-01-10 23:43:09,948 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf431fb72/0b223a5ae7de44a59aca8468cc06b07b/FLAGeda9d2515 [2022-01-10 23:43:10,491 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:43:10,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product24.cil.c [2022-01-10 23:43:10,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf431fb72/0b223a5ae7de44a59aca8468cc06b07b/FLAGeda9d2515 [2022-01-10 23:43:10,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf431fb72/0b223a5ae7de44a59aca8468cc06b07b [2022-01-10 23:43:10,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:43:10,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:43:10,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:43:10,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:43:10,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:43:10,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:43:10" (1/1) ... [2022-01-10 23:43:10,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@84054e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:10, skipping insertion in model container [2022-01-10 23:43:10,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:43:10" (1/1) ... [2022-01-10 23:43:10,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:43:10,918 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:43:11,625 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product24.cil.c[71679,71692] [2022-01-10 23:43:11,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:43:11,637 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:43:11,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:43:11,740 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product24.cil.c[71679,71692] [2022-01-10 23:43:11,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:43:11,746 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:43:11,807 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product24.cil.c[71679,71692] [2022-01-10 23:43:11,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:43:11,827 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:43:11,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:11 WrapperNode [2022-01-10 23:43:11,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:43:11,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:43:11,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:43:11,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:43:11,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:11" (1/1) ... [2022-01-10 23:43:11,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:11" (1/1) ... [2022-01-10 23:43:12,494 INFO L137 Inliner]: procedures = 97, calls = 346, calls flagged for inlining = 198, calls inlined = 1911, statements flattened = 65024 [2022-01-10 23:43:12,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:43:12,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:43:12,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:43:12,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:43:12,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:11" (1/1) ... [2022-01-10 23:43:12,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:11" (1/1) ... [2022-01-10 23:43:12,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:11" (1/1) ... [2022-01-10 23:43:12,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:11" (1/1) ... [2022-01-10 23:43:13,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:11" (1/1) ... [2022-01-10 23:43:13,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:11" (1/1) ... [2022-01-10 23:43:13,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:11" (1/1) ... [2022-01-10 23:43:13,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:43:13,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:43:13,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:43:13,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:43:13,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:11" (1/1) ... [2022-01-10 23:43:13,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:43:13,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:43:13,881 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 23:43:13,899 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 23:43:13,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:43:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:43:13,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:43:13,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:43:14,159 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:43:14,160 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:43:34,988 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:43:35,114 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:43:35,115 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:43:35,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:43:35 BoogieIcfgContainer [2022-01-10 23:43:35,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:43:35,136 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:43:35,137 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:43:35,138 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:43:35,140 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:43:35" (1/1) ... [2022-01-10 23:43:37,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:43:37 BasicIcfg [2022-01-10 23:43:37,749 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:43:37,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:43:37,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:43:37,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:43:37,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:43:10" (1/4) ... [2022-01-10 23:43:37,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbb466a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:43:37, skipping insertion in model container [2022-01-10 23:43:37,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:43:11" (2/4) ... [2022-01-10 23:43:37,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbb466a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:43:37, skipping insertion in model container [2022-01-10 23:43:37,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:43:35" (3/4) ... [2022-01-10 23:43:37,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbb466a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:43:37, skipping insertion in model container [2022-01-10 23:43:37,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:43:37" (4/4) ... [2022-01-10 23:43:37,755 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product24.cil.cTransformedIcfg [2022-01-10 23:43:37,759 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:43:37,759 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 23:43:37,831 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:43:37,835 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 23:43:37,835 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 23:43:38,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 17206 states, 17200 states have (on average 1.8766279069767442) internal successors, (32278), 17205 states have internal predecessors, (32278), 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 23:43:38,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 23:43:38,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:38,028 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] [2022-01-10 23:43:38,029 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:43:38,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:38,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1331722800, now seen corresponding path program 1 times [2022-01-10 23:43:38,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:38,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77358974] [2022-01-10 23:43:38,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:38,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:38,258 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 23:43:38,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:38,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77358974] [2022-01-10 23:43:38,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77358974] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:38,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:38,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:43:38,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100810589] [2022-01-10 23:43:38,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:38,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:43:38,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:38,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:43:38,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:43:38,318 INFO L87 Difference]: Start difference. First operand has 17206 states, 17200 states have (on average 1.8766279069767442) internal successors, (32278), 17205 states have internal predecessors, (32278), 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 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 23:43:39,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:39,323 INFO L93 Difference]: Finished difference Result 41309 states and 77501 transitions. [2022-01-10 23:43:39,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:43:39,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 30 [2022-01-10 23:43:39,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:39,457 INFO L225 Difference]: With dead ends: 41309 [2022-01-10 23:43:39,457 INFO L226 Difference]: Without dead ends: 24102 [2022-01-10 23:43:39,491 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 23:43:39,495 INFO L933 BasicCegarLoop]: 45220 mSDtfsCounter, 32240 mSDsluCounter, 12973 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32240 SdHoareTripleChecker+Valid, 58193 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:39,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32240 Valid, 58193 Invalid, 24 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:43:39,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24102 states. [2022-01-10 23:43:40,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24102 to 17194. [2022-01-10 23:43:40,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17194 states, 17189 states have (on average 1.8762580720228053) internal successors, (32251), 17193 states have internal predecessors, (32251), 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 23:43:40,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17194 states to 17194 states and 32251 transitions. [2022-01-10 23:43:40,134 INFO L78 Accepts]: Start accepts. Automaton has 17194 states and 32251 transitions. Word has length 30 [2022-01-10 23:43:40,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:40,134 INFO L470 AbstractCegarLoop]: Abstraction has 17194 states and 32251 transitions. [2022-01-10 23:43:40,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 23:43:40,135 INFO L276 IsEmpty]: Start isEmpty. Operand 17194 states and 32251 transitions. [2022-01-10 23:43:40,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 23:43:40,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:40,140 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] [2022-01-10 23:43:40,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:43:40,141 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:43:40,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:40,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1651609758, now seen corresponding path program 1 times [2022-01-10 23:43:40,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:40,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850744233] [2022-01-10 23:43:40,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:40,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:40,263 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 23:43:40,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:40,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850744233] [2022-01-10 23:43:40,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850744233] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:40,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:40,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:43:40,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210431972] [2022-01-10 23:43:40,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:40,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:43:40,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:40,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:43:40,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:43:40,265 INFO L87 Difference]: Start difference. First operand 17194 states and 32251 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 23:43:40,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:40,995 INFO L93 Difference]: Finished difference Result 41211 states and 77303 transitions. [2022-01-10 23:43:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:43:40,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 35 [2022-01-10 23:43:40,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:41,055 INFO L225 Difference]: With dead ends: 41211 [2022-01-10 23:43:41,056 INFO L226 Difference]: Without dead ends: 24066 [2022-01-10 23:43:41,080 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 23:43:41,081 INFO L933 BasicCegarLoop]: 45077 mSDtfsCounter, 32139 mSDsluCounter, 12910 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32139 SdHoareTripleChecker+Valid, 57987 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:41,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32139 Valid, 57987 Invalid, 120 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:43:41,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24066 states. [2022-01-10 23:43:41,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24066 to 17194. [2022-01-10 23:43:41,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17194 states, 17189 states have (on average 1.8748036534993309) internal successors, (32226), 17193 states have internal predecessors, (32226), 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 23:43:41,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17194 states to 17194 states and 32226 transitions. [2022-01-10 23:43:41,526 INFO L78 Accepts]: Start accepts. Automaton has 17194 states and 32226 transitions. Word has length 35 [2022-01-10 23:43:41,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:41,527 INFO L470 AbstractCegarLoop]: Abstraction has 17194 states and 32226 transitions. [2022-01-10 23:43:41,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 23:43:41,530 INFO L276 IsEmpty]: Start isEmpty. Operand 17194 states and 32226 transitions. [2022-01-10 23:43:41,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-10 23:43:41,535 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:41,535 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] [2022-01-10 23:43:41,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:43:41,535 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:43:41,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:41,536 INFO L85 PathProgramCache]: Analyzing trace with hash 495273925, now seen corresponding path program 1 times [2022-01-10 23:43:41,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:41,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192772194] [2022-01-10 23:43:41,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:41,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:41,641 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 23:43:41,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:41,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192772194] [2022-01-10 23:43:41,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192772194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:41,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:41,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:43:41,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562637654] [2022-01-10 23:43:41,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:41,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:43:41,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:41,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:43:41,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:43:41,644 INFO L87 Difference]: Start difference. First operand 17194 states and 32226 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 23:43:43,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:43,519 INFO L93 Difference]: Finished difference Result 72081 states and 135176 transitions. [2022-01-10 23:43:43,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:43:43,520 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2022-01-10 23:43:43,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:43,656 INFO L225 Difference]: With dead ends: 72081 [2022-01-10 23:43:43,656 INFO L226 Difference]: Without dead ends: 54915 [2022-01-10 23:43:43,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:43:43,697 INFO L933 BasicCegarLoop]: 90080 mSDtfsCounter, 96358 mSDsluCounter, 83855 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96358 SdHoareTripleChecker+Valid, 173935 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:43,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96358 Valid, 173935 Invalid, 69 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [11 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:43:43,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54915 states. [2022-01-10 23:43:44,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54915 to 17176. [2022-01-10 23:43:44,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17176 states, 17171 states have (on average 1.8753712655057946) internal successors, (32202), 17175 states have internal predecessors, (32202), 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 23:43:44,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17176 states to 17176 states and 32202 transitions. [2022-01-10 23:43:44,551 INFO L78 Accepts]: Start accepts. Automaton has 17176 states and 32202 transitions. Word has length 38 [2022-01-10 23:43:44,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:44,551 INFO L470 AbstractCegarLoop]: Abstraction has 17176 states and 32202 transitions. [2022-01-10 23:43:44,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 23:43:44,552 INFO L276 IsEmpty]: Start isEmpty. Operand 17176 states and 32202 transitions. [2022-01-10 23:43:44,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 23:43:44,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:44,555 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] [2022-01-10 23:43:44,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:43:44,557 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:43:44,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:44,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1860879683, now seen corresponding path program 1 times [2022-01-10 23:43:44,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:44,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737274172] [2022-01-10 23:43:44,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:44,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:44,709 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 23:43:44,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:44,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737274172] [2022-01-10 23:43:44,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737274172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:44,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:44,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:43:44,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002169731] [2022-01-10 23:43:44,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:44,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:43:44,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:44,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:43:44,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:43:44,711 INFO L87 Difference]: Start difference. First operand 17176 states and 32202 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 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 23:43:46,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:46,509 INFO L93 Difference]: Finished difference Result 68684 states and 128802 transitions. [2022-01-10 23:43:46,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 23:43:46,509 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 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 40 [2022-01-10 23:43:46,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:46,631 INFO L225 Difference]: With dead ends: 68684 [2022-01-10 23:43:46,631 INFO L226 Difference]: Without dead ends: 51536 [2022-01-10 23:43:46,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:43:46,671 INFO L933 BasicCegarLoop]: 96554 mSDtfsCounter, 135066 mSDsluCounter, 90264 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135066 SdHoareTripleChecker+Valid, 186818 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:46,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135066 Valid, 186818 Invalid, 164 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [35 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:43:46,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51536 states. [2022-01-10 23:43:47,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51536 to 17176. [2022-01-10 23:43:47,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17176 states, 17171 states have (on average 1.8749636014210005) internal successors, (32195), 17175 states have internal predecessors, (32195), 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 23:43:47,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17176 states to 17176 states and 32195 transitions. [2022-01-10 23:43:47,464 INFO L78 Accepts]: Start accepts. Automaton has 17176 states and 32195 transitions. Word has length 40 [2022-01-10 23:43:47,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:47,464 INFO L470 AbstractCegarLoop]: Abstraction has 17176 states and 32195 transitions. [2022-01-10 23:43:47,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 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 23:43:47,465 INFO L276 IsEmpty]: Start isEmpty. Operand 17176 states and 32195 transitions. [2022-01-10 23:43:47,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 23:43:47,465 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:47,466 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] [2022-01-10 23:43:47,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:43:47,466 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:43:47,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:47,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1452055458, now seen corresponding path program 1 times [2022-01-10 23:43:47,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:47,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171350994] [2022-01-10 23:43:47,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:47,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:47,523 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 23:43:47,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:47,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171350994] [2022-01-10 23:43:47,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171350994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:47,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:47,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:43:47,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713347227] [2022-01-10 23:43:47,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:47,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:43:47,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:47,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:43:47,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:43:47,525 INFO L87 Difference]: Start difference. First operand 17176 states and 32195 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 23:43:48,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:48,874 INFO L93 Difference]: Finished difference Result 68563 states and 128572 transitions. [2022-01-10 23:43:48,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:43:48,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 40 [2022-01-10 23:43:48,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:48,997 INFO L225 Difference]: With dead ends: 68563 [2022-01-10 23:43:48,997 INFO L226 Difference]: Without dead ends: 51409 [2022-01-10 23:43:49,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:43:49,033 INFO L933 BasicCegarLoop]: 51385 mSDtfsCounter, 96403 mSDsluCounter, 96345 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96403 SdHoareTripleChecker+Valid, 147730 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:49,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96403 Valid, 147730 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:43:49,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51409 states. [2022-01-10 23:43:49,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51409 to 17180. [2022-01-10 23:43:49,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17180 states, 17175 states have (on average 1.8747016011644833) internal successors, (32198), 17179 states have internal predecessors, (32198), 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 23:43:49,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17180 states to 17180 states and 32198 transitions. [2022-01-10 23:43:49,699 INFO L78 Accepts]: Start accepts. Automaton has 17180 states and 32198 transitions. Word has length 40 [2022-01-10 23:43:49,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:49,702 INFO L470 AbstractCegarLoop]: Abstraction has 17180 states and 32198 transitions. [2022-01-10 23:43:49,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 23:43:49,702 INFO L276 IsEmpty]: Start isEmpty. Operand 17180 states and 32198 transitions. [2022-01-10 23:43:49,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 23:43:49,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:49,703 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] [2022-01-10 23:43:49,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:43:49,703 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:43:49,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:49,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1706792003, now seen corresponding path program 1 times [2022-01-10 23:43:49,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:49,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372572324] [2022-01-10 23:43:49,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:49,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:49,806 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 23:43:49,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:49,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372572324] [2022-01-10 23:43:49,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372572324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:49,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:49,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:43:49,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228112354] [2022-01-10 23:43:49,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:49,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:43:49,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:49,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:43:49,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:43:49,808 INFO L87 Difference]: Start difference. First operand 17180 states and 32198 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 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 23:43:52,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:52,552 INFO L93 Difference]: Finished difference Result 68779 states and 128946 transitions. [2022-01-10 23:43:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 23:43:52,552 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 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 40 [2022-01-10 23:43:52,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:52,635 INFO L225 Difference]: With dead ends: 68779 [2022-01-10 23:43:52,635 INFO L226 Difference]: Without dead ends: 51614 [2022-01-10 23:43:52,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:43:52,655 INFO L933 BasicCegarLoop]: 83859 mSDtfsCounter, 128867 mSDsluCounter, 90538 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128867 SdHoareTripleChecker+Valid, 174397 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:52,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128867 Valid, 174397 Invalid, 42 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:43:52,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51614 states. [2022-01-10 23:43:53,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51614 to 17172. [2022-01-10 23:43:53,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17172 states, 17167 states have (on average 1.8749344672918973) internal successors, (32187), 17171 states have internal predecessors, (32187), 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 23:43:53,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17172 states to 17172 states and 32187 transitions. [2022-01-10 23:43:53,517 INFO L78 Accepts]: Start accepts. Automaton has 17172 states and 32187 transitions. Word has length 40 [2022-01-10 23:43:53,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:53,518 INFO L470 AbstractCegarLoop]: Abstraction has 17172 states and 32187 transitions. [2022-01-10 23:43:53,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 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 23:43:53,518 INFO L276 IsEmpty]: Start isEmpty. Operand 17172 states and 32187 transitions. [2022-01-10 23:43:53,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 23:43:53,519 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:53,519 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] [2022-01-10 23:43:53,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:43:53,519 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:43:53,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:53,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1647325536, now seen corresponding path program 1 times [2022-01-10 23:43:53,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:53,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379174936] [2022-01-10 23:43:53,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:53,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:53,560 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 23:43:53,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:53,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379174936] [2022-01-10 23:43:53,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379174936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:53,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:53,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:43:53,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430559782] [2022-01-10 23:43:53,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:53,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:43:53,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:53,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:43:53,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:43:53,562 INFO L87 Difference]: Start difference. First operand 17172 states and 32187 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 23:43:55,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:43:55,068 INFO L93 Difference]: Finished difference Result 48054 states and 90102 transitions. [2022-01-10 23:43:55,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 23:43:55,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 41 [2022-01-10 23:43:55,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:43:55,116 INFO L225 Difference]: With dead ends: 48054 [2022-01-10 23:43:55,119 INFO L226 Difference]: Without dead ends: 30910 [2022-01-10 23:43:55,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:43:55,150 INFO L933 BasicCegarLoop]: 32149 mSDtfsCounter, 122231 mSDsluCounter, 38671 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122231 SdHoareTripleChecker+Valid, 70820 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:43:55,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122231 Valid, 70820 Invalid, 56 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:43:55,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30910 states. [2022-01-10 23:43:55,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30910 to 17174. [2022-01-10 23:43:55,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17174 states, 17169 states have (on average 1.8747743025219874) internal successors, (32188), 17173 states have internal predecessors, (32188), 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 23:43:55,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17174 states to 17174 states and 32188 transitions. [2022-01-10 23:43:55,882 INFO L78 Accepts]: Start accepts. Automaton has 17174 states and 32188 transitions. Word has length 41 [2022-01-10 23:43:55,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:43:55,883 INFO L470 AbstractCegarLoop]: Abstraction has 17174 states and 32188 transitions. [2022-01-10 23:43:55,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 23:43:55,883 INFO L276 IsEmpty]: Start isEmpty. Operand 17174 states and 32188 transitions. [2022-01-10 23:43:55,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 23:43:55,883 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:43:55,884 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] [2022-01-10 23:43:55,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:43:55,884 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:43:55,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:43:55,884 INFO L85 PathProgramCache]: Analyzing trace with hash 896898167, now seen corresponding path program 1 times [2022-01-10 23:43:55,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:43:55,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969317933] [2022-01-10 23:43:55,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:43:55,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:43:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:43:55,923 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 23:43:55,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:43:55,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969317933] [2022-01-10 23:43:55,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969317933] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:43:55,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:43:55,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:43:55,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365059066] [2022-01-10 23:43:55,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:43:55,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:43:55,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:43:55,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:43:55,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:43:55,924 INFO L87 Difference]: Start difference. First operand 17174 states and 32188 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 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 23:44:02,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:44:02,668 INFO L93 Difference]: Finished difference Result 46837 states and 87659 transitions. [2022-01-10 23:44:02,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:44:02,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 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) Word has length 42 [2022-01-10 23:44:02,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:44:02,720 INFO L225 Difference]: With dead ends: 46837 [2022-01-10 23:44:02,720 INFO L226 Difference]: Without dead ends: 29707 [2022-01-10 23:44:02,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:44:02,739 INFO L933 BasicCegarLoop]: 32347 mSDtfsCounter, 78849 mSDsluCounter, 22870 mSDsCounter, 0 mSdLazyCounter, 6063 mSolverCounterSat, 1454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78849 SdHoareTripleChecker+Valid, 55217 SdHoareTripleChecker+Invalid, 7517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1454 IncrementalHoareTripleChecker+Valid, 6063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-01-10 23:44:02,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78849 Valid, 55217 Invalid, 7517 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1454 Valid, 6063 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-01-10 23:44:02,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29707 states. [2022-01-10 23:44:03,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29707 to 17174. [2022-01-10 23:44:03,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17174 states, 17169 states have (on average 1.838429727998136) internal successors, (31564), 17173 states have internal predecessors, (31564), 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 23:44:03,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17174 states to 17174 states and 31564 transitions. [2022-01-10 23:44:03,505 INFO L78 Accepts]: Start accepts. Automaton has 17174 states and 31564 transitions. Word has length 42 [2022-01-10 23:44:03,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:44:03,506 INFO L470 AbstractCegarLoop]: Abstraction has 17174 states and 31564 transitions. [2022-01-10 23:44:03,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 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 23:44:03,506 INFO L276 IsEmpty]: Start isEmpty. Operand 17174 states and 31564 transitions. [2022-01-10 23:44:03,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 23:44:03,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:44:03,506 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, 1, 1] [2022-01-10 23:44:03,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:44:03,507 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:44:03,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:44:03,507 INFO L85 PathProgramCache]: Analyzing trace with hash -596918849, now seen corresponding path program 1 times [2022-01-10 23:44:03,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:44:03,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347497912] [2022-01-10 23:44:03,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:44:03,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:44:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:44:03,566 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 23:44:03,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:44:03,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347497912] [2022-01-10 23:44:03,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347497912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:44:03,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:44:03,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:44:03,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550330125] [2022-01-10 23:44:03,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:44:03,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:44:03,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:44:03,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:44:03,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:44:03,568 INFO L87 Difference]: Start difference. First operand 17174 states and 31564 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 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)