/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_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:05:09,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:05:09,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:05:09,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:05:09,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:05:09,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:05:09,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:05:09,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:05:09,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:05:09,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:05:09,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:05:09,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:05:09,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:05:09,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:05:09,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:05:09,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:05:09,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:05:09,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:05:09,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:05:09,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:05:09,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:05:09,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:05:09,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:05:09,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:05:09,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:05:09,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:05:09,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:05:09,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:05:09,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:05:09,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:05:09,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:05:09,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:05:09,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:05:09,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:05:09,783 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:05:09,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:05:09,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:05:09,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:05:09,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:05:09,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:05:09,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:05:09,787 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:05:09,805 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:05:09,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:05:09,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:05:09,806 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:05:09,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:05:09,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:05:09,807 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:05:09,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:05:09,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:05:09,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:05:09,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:05:09,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:05:09,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:05:09,808 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:05:09,808 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:05:09,809 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:05:09,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:05:09,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:05:09,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:05:09,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:05:09,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:05:09,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:05:09,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:05:09,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:05:09,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:05:09,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:05:09,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:05:09,811 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:05:09,811 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:05:09,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:05:09,811 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:05:09,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:05:09,812 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:05:09,812 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:05:10,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:05:10,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:05:10,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:05:10,039 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:05:10,041 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:05:10,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product31.cil.c [2022-01-10 12:05:10,124 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9601d31c/d4f3361b8fd84d099ee944c198494313/FLAGfbbb7c878 [2022-01-10 12:05:10,561 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:05:10,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product31.cil.c [2022-01-10 12:05:10,598 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9601d31c/d4f3361b8fd84d099ee944c198494313/FLAGfbbb7c878 [2022-01-10 12:05:10,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9601d31c/d4f3361b8fd84d099ee944c198494313 [2022-01-10 12:05:10,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:05:10,612 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:05:10,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:05:10,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:05:10,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:05:10,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:05:10" (1/1) ... [2022-01-10 12:05:10,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d3a051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:10, skipping insertion in model container [2022-01-10 12:05:10,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:05:10" (1/1) ... [2022-01-10 12:05:10,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:05:10,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:05:10,954 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_spec1_product31.cil.c[11232,11245] [2022-01-10 12:05:11,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:05:11,202 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:05:11,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:05:11,237 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_spec1_product31.cil.c[11232,11245] [2022-01-10 12:05:11,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:05:11,340 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:05:11,372 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_spec1_product31.cil.c[11232,11245] [2022-01-10 12:05:11,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:05:11,476 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:05:11,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:11 WrapperNode [2022-01-10 12:05:11,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:05:11,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:05:11,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:05:11,479 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:05:11,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:11" (1/1) ... [2022-01-10 12:05:11,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:11" (1/1) ... [2022-01-10 12:05:11,714 INFO L137 Inliner]: procedures = 99, calls = 350, calls flagged for inlining = 203, calls inlined = 440, statements flattened = 14237 [2022-01-10 12:05:11,715 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:05:11,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:05:11,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:05:11,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:05:11,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:11" (1/1) ... [2022-01-10 12:05:11,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:11" (1/1) ... [2022-01-10 12:05:11,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:11" (1/1) ... [2022-01-10 12:05:11,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:11" (1/1) ... [2022-01-10 12:05:11,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:11" (1/1) ... [2022-01-10 12:05:11,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:11" (1/1) ... [2022-01-10 12:05:11,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:11" (1/1) ... [2022-01-10 12:05:11,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:05:11,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:05:11,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:05:11,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:05:11,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:11" (1/1) ... [2022-01-10 12:05:11,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:05:12,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:05:12,029 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 12:05:12,051 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 12:05:12,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:05:12,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:05:12,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:05:12,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:05:12,262 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:05:12,264 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:05:17,836 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:05:17,882 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:05:17,883 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:05:17,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:05:17 BoogieIcfgContainer [2022-01-10 12:05:17,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:05:17,890 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:05:17,890 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:05:17,891 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:05:17,894 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:05:17" (1/1) ... [2022-01-10 12:05:18,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:05:18 BasicIcfg [2022-01-10 12:05:18,901 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:05:18,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:05:18,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:05:18,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:05:18,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:05:10" (1/4) ... [2022-01-10 12:05:18,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51dd0bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:05:18, skipping insertion in model container [2022-01-10 12:05:18,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:05:11" (2/4) ... [2022-01-10 12:05:18,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51dd0bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:05:18, skipping insertion in model container [2022-01-10 12:05:18,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:05:17" (3/4) ... [2022-01-10 12:05:18,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51dd0bc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:05:18, skipping insertion in model container [2022-01-10 12:05:18,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:05:18" (4/4) ... [2022-01-10 12:05:18,910 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product31.cil.cTransformedIcfg [2022-01-10 12:05:18,915 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:05:18,916 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 12:05:18,983 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:05:18,990 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 12:05:18,990 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 12:05:19,058 INFO L276 IsEmpty]: Start isEmpty. Operand has 3739 states, 3733 states have (on average 1.8692740423252077) internal successors, (6978), 3738 states have internal predecessors, (6978), 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 12:05:19,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:05:19,083 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:19,083 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:05:19,084 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 12:05:19,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:19,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1487707523, now seen corresponding path program 1 times [2022-01-10 12:05:19,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:19,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066143959] [2022-01-10 12:05:19,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:19,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:19,490 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 12:05:19,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:19,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066143959] [2022-01-10 12:05:19,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066143959] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:19,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:19,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:05:19,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718003552] [2022-01-10 12:05:19,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:19,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:05:19,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:19,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:05:19,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:19,529 INFO L87 Difference]: Start difference. First operand has 3739 states, 3733 states have (on average 1.8692740423252077) internal successors, (6978), 3738 states have internal predecessors, (6978), 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 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 12:05:19,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:19,980 INFO L93 Difference]: Finished difference Result 11122 states and 20774 transitions. [2022-01-10 12:05:19,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:05:19,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2022-01-10 12:05:19,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:20,044 INFO L225 Difference]: With dead ends: 11122 [2022-01-10 12:05:20,044 INFO L226 Difference]: Without dead ends: 7385 [2022-01-10 12:05:20,061 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 12:05:20,064 INFO L933 BasicCegarLoop]: 13791 mSDtfsCounter, 6939 mSDsluCounter, 6845 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6939 SdHoareTripleChecker+Valid, 20636 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 12:05:20,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6939 Valid, 20636 Invalid, 24 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:20,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7385 states. [2022-01-10 12:05:20,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7385 to 3728. [2022-01-10 12:05:20,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3728 states, 3723 states have (on average 1.8678485092667203) internal successors, (6954), 3727 states have internal predecessors, (6954), 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 12:05:20,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3728 states to 3728 states and 6954 transitions. [2022-01-10 12:05:20,279 INFO L78 Accepts]: Start accepts. Automaton has 3728 states and 6954 transitions. Word has length 64 [2022-01-10 12:05:20,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:20,279 INFO L470 AbstractCegarLoop]: Abstraction has 3728 states and 6954 transitions. [2022-01-10 12:05:20,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 12:05:20,280 INFO L276 IsEmpty]: Start isEmpty. Operand 3728 states and 6954 transitions. [2022-01-10 12:05:20,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 12:05:20,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:20,284 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, 1, 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 12:05:20,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:05:20,285 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 12:05:20,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:20,286 INFO L85 PathProgramCache]: Analyzing trace with hash 322645828, now seen corresponding path program 1 times [2022-01-10 12:05:20,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:20,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420861063] [2022-01-10 12:05:20,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:20,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:20,408 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 12:05:20,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:20,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420861063] [2022-01-10 12:05:20,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420861063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:20,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:20,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:05:20,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826495849] [2022-01-10 12:05:20,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:20,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:05:20,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:20,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:05:20,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:20,411 INFO L87 Difference]: Start difference. First operand 3728 states and 6954 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 12:05:20,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:20,738 INFO L93 Difference]: Finished difference Result 11027 states and 20582 transitions. [2022-01-10 12:05:20,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:05:20,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2022-01-10 12:05:20,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:20,774 INFO L225 Difference]: With dead ends: 11027 [2022-01-10 12:05:20,775 INFO L226 Difference]: Without dead ends: 7349 [2022-01-10 12:05:20,787 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 12:05:20,788 INFO L933 BasicCegarLoop]: 13654 mSDtfsCounter, 6841 mSDsluCounter, 6785 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6841 SdHoareTripleChecker+Valid, 20439 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:20,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6841 Valid, 20439 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:05:20,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7349 states. [2022-01-10 12:05:20,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7349 to 3728. [2022-01-10 12:05:20,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3728 states, 3723 states have (on average 1.861133494493688) internal successors, (6929), 3727 states have internal predecessors, (6929), 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 12:05:20,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3728 states to 3728 states and 6929 transitions. [2022-01-10 12:05:20,916 INFO L78 Accepts]: Start accepts. Automaton has 3728 states and 6929 transitions. Word has length 71 [2022-01-10 12:05:20,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:20,918 INFO L470 AbstractCegarLoop]: Abstraction has 3728 states and 6929 transitions. [2022-01-10 12:05:20,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 12:05:20,918 INFO L276 IsEmpty]: Start isEmpty. Operand 3728 states and 6929 transitions. [2022-01-10 12:05:20,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 12:05:20,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:20,922 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, 1, 1, 1, 1, 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 12:05:20,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:05:20,922 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 12:05:20,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:20,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1061990959, now seen corresponding path program 1 times [2022-01-10 12:05:20,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:20,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308767425] [2022-01-10 12:05:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:20,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:21,018 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 12:05:21,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:21,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308767425] [2022-01-10 12:05:21,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308767425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:21,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:21,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:05:21,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258385769] [2022-01-10 12:05:21,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:21,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:05:21,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:21,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:05:21,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:21,075 INFO L87 Difference]: Start difference. First operand 3728 states and 6929 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 12:05:21,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:21,193 INFO L93 Difference]: Finished difference Result 7385 states and 13760 transitions. [2022-01-10 12:05:21,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:05:21,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2022-01-10 12:05:21,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:21,209 INFO L225 Difference]: With dead ends: 7385 [2022-01-10 12:05:21,209 INFO L226 Difference]: Without dead ends: 3728 [2022-01-10 12:05:21,219 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 12:05:21,222 INFO L933 BasicCegarLoop]: 6910 mSDtfsCounter, 6918 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6918 SdHoareTripleChecker+Valid, 6917 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:21,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6918 Valid, 6917 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:21,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2022-01-10 12:05:21,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 3728. [2022-01-10 12:05:21,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3728 states, 3723 states have (on average 1.8605962933118454) internal successors, (6927), 3727 states have internal predecessors, (6927), 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 12:05:21,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3728 states to 3728 states and 6927 transitions. [2022-01-10 12:05:21,326 INFO L78 Accepts]: Start accepts. Automaton has 3728 states and 6927 transitions. Word has length 74 [2022-01-10 12:05:21,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:21,327 INFO L470 AbstractCegarLoop]: Abstraction has 3728 states and 6927 transitions. [2022-01-10 12:05:21,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 12:05:21,328 INFO L276 IsEmpty]: Start isEmpty. Operand 3728 states and 6927 transitions. [2022-01-10 12:05:21,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 12:05:21,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:21,333 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, 1, 1, 1, 1, 1, 1, 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 12:05:21,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:05:21,333 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 12:05:21,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:21,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1267176311, now seen corresponding path program 1 times [2022-01-10 12:05:21,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:21,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461968572] [2022-01-10 12:05:21,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:21,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:21,462 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 12:05:21,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:21,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461968572] [2022-01-10 12:05:21,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461968572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:21,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:21,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:05:21,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910693856] [2022-01-10 12:05:21,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:21,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:05:21,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:21,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:05:21,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:21,466 INFO L87 Difference]: Start difference. First operand 3728 states and 6927 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 12:05:21,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:21,659 INFO L93 Difference]: Finished difference Result 7349 states and 13687 transitions. [2022-01-10 12:05:21,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:05:21,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 76 [2022-01-10 12:05:21,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:21,690 INFO L225 Difference]: With dead ends: 7349 [2022-01-10 12:05:21,691 INFO L226 Difference]: Without dead ends: 3728 [2022-01-10 12:05:21,698 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 12:05:21,702 INFO L933 BasicCegarLoop]: 6832 mSDtfsCounter, 6899 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6899 SdHoareTripleChecker+Valid, 6847 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:21,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6899 Valid, 6847 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:05:21,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2022-01-10 12:05:21,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 3728. [2022-01-10 12:05:21,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3728 states, 3723 states have (on average 1.8579102874026323) internal successors, (6917), 3727 states have internal predecessors, (6917), 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 12:05:21,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3728 states to 3728 states and 6917 transitions. [2022-01-10 12:05:21,819 INFO L78 Accepts]: Start accepts. Automaton has 3728 states and 6917 transitions. Word has length 76 [2022-01-10 12:05:21,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:21,819 INFO L470 AbstractCegarLoop]: Abstraction has 3728 states and 6917 transitions. [2022-01-10 12:05:21,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 12:05:21,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3728 states and 6917 transitions. [2022-01-10 12:05:21,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 12:05:21,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:21,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:21,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:05:21,824 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 12:05:21,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:21,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2076867859, now seen corresponding path program 1 times [2022-01-10 12:05:21,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:21,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966178536] [2022-01-10 12:05:21,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:21,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:21,926 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 12:05:21,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:21,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966178536] [2022-01-10 12:05:21,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966178536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:21,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:21,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:05:21,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997787722] [2022-01-10 12:05:21,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:21,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:05:21,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:21,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:05:21,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:21,929 INFO L87 Difference]: Start difference. First operand 3728 states and 6917 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 12:05:22,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:22,149 INFO L93 Difference]: Finished difference Result 9238 states and 17196 transitions. [2022-01-10 12:05:22,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:05:22,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2022-01-10 12:05:22,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:22,172 INFO L225 Difference]: With dead ends: 9238 [2022-01-10 12:05:22,172 INFO L226 Difference]: Without dead ends: 7382 [2022-01-10 12:05:22,178 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 12:05:22,179 INFO L933 BasicCegarLoop]: 10334 mSDtfsCounter, 6895 mSDsluCounter, 6825 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6895 SdHoareTripleChecker+Valid, 17159 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:22,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6895 Valid, 17159 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:22,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7382 states. [2022-01-10 12:05:22,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7382 to 7382. [2022-01-10 12:05:22,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7382 states, 7377 states have (on average 1.8626813067642674) internal successors, (13741), 7381 states have internal predecessors, (13741), 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 12:05:22,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7382 states to 7382 states and 13741 transitions. [2022-01-10 12:05:22,474 INFO L78 Accepts]: Start accepts. Automaton has 7382 states and 13741 transitions. Word has length 78 [2022-01-10 12:05:22,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:22,480 INFO L470 AbstractCegarLoop]: Abstraction has 7382 states and 13741 transitions. [2022-01-10 12:05:22,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 12:05:22,480 INFO L276 IsEmpty]: Start isEmpty. Operand 7382 states and 13741 transitions. [2022-01-10 12:05:22,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 12:05:22,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:22,488 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:22,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:05:22,488 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:22,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:22,489 INFO L85 PathProgramCache]: Analyzing trace with hash 41626752, now seen corresponding path program 1 times [2022-01-10 12:05:22,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:22,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940656106] [2022-01-10 12:05:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:22,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:22,567 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 12:05:22,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:22,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940656106] [2022-01-10 12:05:22,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940656106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:22,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:22,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:05:22,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278915056] [2022-01-10 12:05:22,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:22,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:05:22,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:22,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:05:22,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:05:22,569 INFO L87 Difference]: Start difference. First operand 7382 states and 13741 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 12:05:22,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:22,861 INFO L93 Difference]: Finished difference Result 18320 states and 34166 transitions. [2022-01-10 12:05:22,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:05:22,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2022-01-10 12:05:22,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:22,908 INFO L225 Difference]: With dead ends: 18320 [2022-01-10 12:05:22,909 INFO L226 Difference]: Without dead ends: 14632 [2022-01-10 12:05:22,922 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 12:05:22,925 INFO L933 BasicCegarLoop]: 6914 mSDtfsCounter, 6833 mSDsluCounter, 6828 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6833 SdHoareTripleChecker+Valid, 13742 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:22,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6833 Valid, 13742 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:22,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14632 states. [2022-01-10 12:05:23,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14632 to 14630. [2022-01-10 12:05:23,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14630 states, 14625 states have (on average 1.8657777777777778) internal successors, (27287), 14629 states have internal predecessors, (27287), 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 12:05:23,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14630 states to 14630 states and 27287 transitions. [2022-01-10 12:05:23,328 INFO L78 Accepts]: Start accepts. Automaton has 14630 states and 27287 transitions. Word has length 79 [2022-01-10 12:05:23,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:23,329 INFO L470 AbstractCegarLoop]: Abstraction has 14630 states and 27287 transitions. [2022-01-10 12:05:23,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 12:05:23,329 INFO L276 IsEmpty]: Start isEmpty. Operand 14630 states and 27287 transitions. [2022-01-10 12:05:23,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 12:05:23,344 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:23,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:23,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:05:23,344 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 12:05:23,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:23,345 INFO L85 PathProgramCache]: Analyzing trace with hash -180686714, now seen corresponding path program 1 times [2022-01-10 12:05:23,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:23,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853881953] [2022-01-10 12:05:23,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:23,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:23,525 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 12:05:23,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:23,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853881953] [2022-01-10 12:05:23,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853881953] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:23,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:23,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:05:23,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664047392] [2022-01-10 12:05:23,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:23,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:05:23,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:23,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:05:23,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:05:23,527 INFO L87 Difference]: Start difference. First operand 14630 states and 27287 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 12:05:25,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:25,444 INFO L93 Difference]: Finished difference Result 86996 states and 162517 transitions. [2022-01-10 12:05:25,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:05:25,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 79 [2022-01-10 12:05:25,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:25,693 INFO L225 Difference]: With dead ends: 86996 [2022-01-10 12:05:25,693 INFO L226 Difference]: Without dead ends: 72395 [2022-01-10 12:05:25,747 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 12:05:25,748 INFO L933 BasicCegarLoop]: 27215 mSDtfsCounter, 20452 mSDsluCounter, 34028 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20452 SdHoareTripleChecker+Valid, 61243 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:25,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20452 Valid, 61243 Invalid, 65 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:25,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72395 states. [2022-01-10 12:05:26,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72395 to 14618. [2022-01-10 12:05:26,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14618 states, 14613 states have (on average 1.8662150140286047) internal successors, (27271), 14617 states have internal predecessors, (27271), 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 12:05:26,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14618 states to 14618 states and 27271 transitions. [2022-01-10 12:05:26,719 INFO L78 Accepts]: Start accepts. Automaton has 14618 states and 27271 transitions. Word has length 79 [2022-01-10 12:05:26,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:26,719 INFO L470 AbstractCegarLoop]: Abstraction has 14618 states and 27271 transitions. [2022-01-10 12:05:26,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 12:05:26,719 INFO L276 IsEmpty]: Start isEmpty. Operand 14618 states and 27271 transitions. [2022-01-10 12:05:26,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 12:05:26,730 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:26,730 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:26,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:05:26,730 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 12:05:26,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:26,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1106625347, now seen corresponding path program 1 times [2022-01-10 12:05:26,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:26,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859197517] [2022-01-10 12:05:26,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:26,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:26,795 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 12:05:26,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:26,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859197517] [2022-01-10 12:05:26,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859197517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:26,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:26,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:05:26,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736252525] [2022-01-10 12:05:26,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:26,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:05:26,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:26,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:05:26,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:05:26,797 INFO L87 Difference]: Start difference. First operand 14618 states and 27271 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 12:05:28,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:28,262 INFO L93 Difference]: Finished difference Result 58184 states and 108634 transitions. [2022-01-10 12:05:28,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:05:28,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 81 [2022-01-10 12:05:28,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:28,360 INFO L225 Difference]: With dead ends: 58184 [2022-01-10 12:05:28,361 INFO L226 Difference]: Without dead ends: 43589 [2022-01-10 12:05:28,394 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 12:05:28,394 INFO L933 BasicCegarLoop]: 6909 mSDtfsCounter, 20501 mSDsluCounter, 20451 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20501 SdHoareTripleChecker+Valid, 27360 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:28,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20501 Valid, 27360 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:28,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43589 states. [2022-01-10 12:05:29,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43589 to 14626. [2022-01-10 12:05:29,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14626 states, 14621 states have (on average 1.8655358730592984) internal successors, (27276), 14625 states have internal predecessors, (27276), 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 12:05:29,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14626 states to 14626 states and 27276 transitions. [2022-01-10 12:05:29,100 INFO L78 Accepts]: Start accepts. Automaton has 14626 states and 27276 transitions. Word has length 81 [2022-01-10 12:05:29,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:29,100 INFO L470 AbstractCegarLoop]: Abstraction has 14626 states and 27276 transitions. [2022-01-10 12:05:29,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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 12:05:29,101 INFO L276 IsEmpty]: Start isEmpty. Operand 14626 states and 27276 transitions. [2022-01-10 12:05:29,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 12:05:29,112 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:29,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:29,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:05:29,112 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 12:05:29,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:29,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1191676615, now seen corresponding path program 1 times [2022-01-10 12:05:29,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:29,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509746321] [2022-01-10 12:05:29,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:29,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:29,219 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 12:05:29,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:29,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509746321] [2022-01-10 12:05:29,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509746321] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:29,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:29,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:05:29,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695928344] [2022-01-10 12:05:29,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:29,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:05:29,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:29,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:05:29,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:05:29,225 INFO L87 Difference]: Start difference. First operand 14626 states and 27276 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 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 12:05:31,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:31,024 INFO L93 Difference]: Finished difference Result 72557 states and 135507 transitions. [2022-01-10 12:05:31,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:05:31,025 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 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) Word has length 82 [2022-01-10 12:05:31,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:31,147 INFO L225 Difference]: With dead ends: 72557 [2022-01-10 12:05:31,147 INFO L226 Difference]: Without dead ends: 57947 [2022-01-10 12:05:31,192 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 12:05:31,194 INFO L933 BasicCegarLoop]: 27183 mSDtfsCounter, 34205 mSDsluCounter, 20381 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34205 SdHoareTripleChecker+Valid, 47564 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:31,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34205 Valid, 47564 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:31,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57947 states. [2022-01-10 12:05:32,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57947 to 14618. [2022-01-10 12:05:32,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14618 states, 14613 states have (on average 1.865599124067611) internal successors, (27262), 14617 states have internal predecessors, (27262), 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 12:05:32,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14618 states to 14618 states and 27262 transitions. [2022-01-10 12:05:32,062 INFO L78 Accepts]: Start accepts. Automaton has 14618 states and 27262 transitions. Word has length 82 [2022-01-10 12:05:32,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:32,062 INFO L470 AbstractCegarLoop]: Abstraction has 14618 states and 27262 transitions. [2022-01-10 12:05:32,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 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 12:05:32,062 INFO L276 IsEmpty]: Start isEmpty. Operand 14618 states and 27262 transitions. [2022-01-10 12:05:32,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 12:05:32,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:32,075 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:32,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:05:32,075 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:32,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:32,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1267352053, now seen corresponding path program 1 times [2022-01-10 12:05:32,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:32,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884346468] [2022-01-10 12:05:32,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:32,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:32,154 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 12:05:32,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:32,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884346468] [2022-01-10 12:05:32,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884346468] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:32,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:32,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:05:32,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477442573] [2022-01-10 12:05:32,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:32,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:05:32,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:32,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:05:32,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:05:32,156 INFO L87 Difference]: Start difference. First operand 14618 states and 27262 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 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 12:05:33,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:33,613 INFO L93 Difference]: Finished difference Result 57989 states and 108299 transitions. [2022-01-10 12:05:33,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:05:33,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 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 83 [2022-01-10 12:05:33,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:33,679 INFO L225 Difference]: With dead ends: 57989 [2022-01-10 12:05:33,679 INFO L226 Difference]: Without dead ends: 43418 [2022-01-10 12:05:33,698 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 12:05:33,698 INFO L933 BasicCegarLoop]: 6846 mSDtfsCounter, 34054 mSDsluCounter, 20284 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34054 SdHoareTripleChecker+Valid, 27130 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:33,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34054 Valid, 27130 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:33,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43418 states. [2022-01-10 12:05:34,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43418 to 14644. [2022-01-10 12:05:34,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14644 states, 14639 states have (on average 1.8648814809754766) internal successors, (27300), 14643 states have internal predecessors, (27300), 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 12:05:34,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14644 states to 14644 states and 27300 transitions. [2022-01-10 12:05:34,634 INFO L78 Accepts]: Start accepts. Automaton has 14644 states and 27300 transitions. Word has length 83 [2022-01-10 12:05:34,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:34,635 INFO L470 AbstractCegarLoop]: Abstraction has 14644 states and 27300 transitions. [2022-01-10 12:05:34,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 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 12:05:34,635 INFO L276 IsEmpty]: Start isEmpty. Operand 14644 states and 27300 transitions. [2022-01-10 12:05:34,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 12:05:34,647 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:34,647 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:34,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:05:34,647 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:34,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:34,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1738780731, now seen corresponding path program 1 times [2022-01-10 12:05:34,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:34,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194619266] [2022-01-10 12:05:34,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:34,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:34,731 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 12:05:34,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:34,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194619266] [2022-01-10 12:05:34,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194619266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:34,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:34,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:05:34,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555716089] [2022-01-10 12:05:34,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:34,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:05:34,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:34,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:05:34,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:05:34,734 INFO L87 Difference]: Start difference. First operand 14644 states and 27300 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 12:05:35,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:35,638 INFO L93 Difference]: Finished difference Result 32716 states and 61061 transitions. [2022-01-10 12:05:35,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:05:35,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 85 [2022-01-10 12:05:35,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:35,794 INFO L225 Difference]: With dead ends: 32716 [2022-01-10 12:05:35,794 INFO L226 Difference]: Without dead ends: 21755 [2022-01-10 12:05:35,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:05:35,806 INFO L933 BasicCegarLoop]: 6839 mSDtfsCounter, 20323 mSDsluCounter, 6827 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20323 SdHoareTripleChecker+Valid, 13666 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:35,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20323 Valid, 13666 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:05:35,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21755 states. [2022-01-10 12:05:36,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21755 to 14564. [2022-01-10 12:05:36,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14564 states, 14559 states have (on average 1.865856171440346) internal successors, (27165), 14563 states have internal predecessors, (27165), 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 12:05:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14564 states to 14564 states and 27165 transitions. [2022-01-10 12:05:36,359 INFO L78 Accepts]: Start accepts. Automaton has 14564 states and 27165 transitions. Word has length 85 [2022-01-10 12:05:36,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:36,360 INFO L470 AbstractCegarLoop]: Abstraction has 14564 states and 27165 transitions. [2022-01-10 12:05:36,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 12:05:36,360 INFO L276 IsEmpty]: Start isEmpty. Operand 14564 states and 27165 transitions. [2022-01-10 12:05:36,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 12:05:36,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:36,370 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:36,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:05:36,371 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:36,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:36,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1148676034, now seen corresponding path program 1 times [2022-01-10 12:05:36,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:36,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144264391] [2022-01-10 12:05:36,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:36,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:36,457 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 12:05:36,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:36,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144264391] [2022-01-10 12:05:36,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144264391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:36,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:36,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:05:36,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269102483] [2022-01-10 12:05:36,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:36,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:05:36,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:36,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:05:36,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:05:36,459 INFO L87 Difference]: Start difference. First operand 14564 states and 27165 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 12:05:36,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:36,827 INFO L93 Difference]: Finished difference Result 21791 states and 40663 transitions. [2022-01-10 12:05:36,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:05:36,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 86 [2022-01-10 12:05:36,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:36,837 INFO L225 Difference]: With dead ends: 21791 [2022-01-10 12:05:36,837 INFO L226 Difference]: Without dead ends: 7328 [2022-01-10 12:05:36,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:05:36,849 INFO L933 BasicCegarLoop]: 6845 mSDtfsCounter, 13600 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13600 SdHoareTripleChecker+Valid, 6923 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:36,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13600 Valid, 6923 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:36,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7328 states. [2022-01-10 12:05:37,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7328 to 7328. [2022-01-10 12:05:37,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7328 states, 7324 states have (on average 1.8629164391043145) internal successors, (13644), 7327 states have internal predecessors, (13644), 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 12:05:37,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7328 states to 7328 states and 13644 transitions. [2022-01-10 12:05:37,122 INFO L78 Accepts]: Start accepts. Automaton has 7328 states and 13644 transitions. Word has length 86 [2022-01-10 12:05:37,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:37,122 INFO L470 AbstractCegarLoop]: Abstraction has 7328 states and 13644 transitions. [2022-01-10 12:05:37,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 12:05:37,122 INFO L276 IsEmpty]: Start isEmpty. Operand 7328 states and 13644 transitions. [2022-01-10 12:05:37,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 12:05:37,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:37,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:37,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:05:37,127 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:37,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:37,127 INFO L85 PathProgramCache]: Analyzing trace with hash 106075382, now seen corresponding path program 1 times [2022-01-10 12:05:37,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:37,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967702840] [2022-01-10 12:05:37,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:37,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:37,194 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 12:05:37,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:37,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967702840] [2022-01-10 12:05:37,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967702840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:37,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:37,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:05:37,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92132638] [2022-01-10 12:05:37,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:37,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:05:37,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:37,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:05:37,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:05:37,196 INFO L87 Difference]: Start difference. First operand 7328 states and 13644 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 12:05:37,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:37,617 INFO L93 Difference]: Finished difference Result 14543 states and 27122 transitions. [2022-01-10 12:05:37,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:05:37,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 88 [2022-01-10 12:05:37,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:37,626 INFO L225 Difference]: With dead ends: 14543 [2022-01-10 12:05:37,627 INFO L226 Difference]: Without dead ends: 7316 [2022-01-10 12:05:37,633 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 12:05:37,634 INFO L933 BasicCegarLoop]: 6827 mSDtfsCounter, 13572 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13572 SdHoareTripleChecker+Valid, 6918 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:37,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13572 Valid, 6918 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:37,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7316 states. [2022-01-10 12:05:37,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7316 to 7316. [2022-01-10 12:05:37,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7316 states, 7312 states have (on average 1.862964989059081) internal successors, (13622), 7315 states have internal predecessors, (13622), 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 12:05:37,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7316 states to 7316 states and 13622 transitions. [2022-01-10 12:05:37,945 INFO L78 Accepts]: Start accepts. Automaton has 7316 states and 13622 transitions. Word has length 88 [2022-01-10 12:05:37,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:37,945 INFO L470 AbstractCegarLoop]: Abstraction has 7316 states and 13622 transitions. [2022-01-10 12:05:37,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 12:05:37,946 INFO L276 IsEmpty]: Start isEmpty. Operand 7316 states and 13622 transitions. [2022-01-10 12:05:37,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 12:05:37,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:37,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:37,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:05:37,951 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:37,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:37,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1075719150, now seen corresponding path program 1 times [2022-01-10 12:05:37,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:37,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822476692] [2022-01-10 12:05:37,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:37,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:38,044 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 12:05:38,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:38,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822476692] [2022-01-10 12:05:38,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822476692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:38,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:38,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:05:38,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820564519] [2022-01-10 12:05:38,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:38,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:05:38,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:38,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:05:38,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:05:38,046 INFO L87 Difference]: Start difference. First operand 7316 states and 13622 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 12:05:38,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:38,546 INFO L93 Difference]: Finished difference Result 14569 states and 27152 transitions. [2022-01-10 12:05:38,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:05:38,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 88 [2022-01-10 12:05:38,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:38,561 INFO L225 Difference]: With dead ends: 14569 [2022-01-10 12:05:38,561 INFO L226 Difference]: Without dead ends: 7378 [2022-01-10 12:05:38,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:05:38,571 INFO L933 BasicCegarLoop]: 6853 mSDtfsCounter, 20386 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20386 SdHoareTripleChecker+Valid, 6988 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:38,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20386 Valid, 6988 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:05:38,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7378 states. [2022-01-10 12:05:38,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7378 to 7316. [2022-01-10 12:05:38,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7316 states, 7312 states have (on average 1.862691466083151) internal successors, (13620), 7315 states have internal predecessors, (13620), 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 12:05:38,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7316 states to 7316 states and 13620 transitions. [2022-01-10 12:05:38,920 INFO L78 Accepts]: Start accepts. Automaton has 7316 states and 13620 transitions. Word has length 88 [2022-01-10 12:05:38,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:38,920 INFO L470 AbstractCegarLoop]: Abstraction has 7316 states and 13620 transitions. [2022-01-10 12:05:38,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 12:05:38,920 INFO L276 IsEmpty]: Start isEmpty. Operand 7316 states and 13620 transitions. [2022-01-10 12:05:38,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 12:05:38,923 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:38,923 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:38,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:05:38,924 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:38,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:38,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1749337461, now seen corresponding path program 1 times [2022-01-10 12:05:38,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:38,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891654726] [2022-01-10 12:05:38,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:38,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:39,014 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 12:05:39,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:39,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891654726] [2022-01-10 12:05:39,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891654726] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:39,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:39,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:05:39,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479860931] [2022-01-10 12:05:39,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:39,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:05:39,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:39,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:05:39,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:05:39,016 INFO L87 Difference]: Start difference. First operand 7316 states and 13620 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 12:05:40,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:40,071 INFO L93 Difference]: Finished difference Result 28977 states and 54066 transitions. [2022-01-10 12:05:40,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 12:05:40,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 89 [2022-01-10 12:05:40,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:40,110 INFO L225 Difference]: With dead ends: 28977 [2022-01-10 12:05:40,110 INFO L226 Difference]: Without dead ends: 21786 [2022-01-10 12:05:40,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:05:40,124 INFO L933 BasicCegarLoop]: 6854 mSDtfsCounter, 27114 mSDsluCounter, 20419 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27114 SdHoareTripleChecker+Valid, 27273 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:40,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27114 Valid, 27273 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:05:40,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21786 states. [2022-01-10 12:05:40,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21786 to 7336. [2022-01-10 12:05:40,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7336 states, 7332 states have (on average 1.8614293507910529) internal successors, (13648), 7335 states have internal predecessors, (13648), 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 12:05:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7336 states to 7336 states and 13648 transitions. [2022-01-10 12:05:40,501 INFO L78 Accepts]: Start accepts. Automaton has 7336 states and 13648 transitions. Word has length 89 [2022-01-10 12:05:40,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:40,502 INFO L470 AbstractCegarLoop]: Abstraction has 7336 states and 13648 transitions. [2022-01-10 12:05:40,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 12:05:40,502 INFO L276 IsEmpty]: Start isEmpty. Operand 7336 states and 13648 transitions. [2022-01-10 12:05:40,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 12:05:40,505 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:40,505 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:40,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:05:40,506 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:40,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:40,506 INFO L85 PathProgramCache]: Analyzing trace with hash 456283589, now seen corresponding path program 1 times [2022-01-10 12:05:40,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:40,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949111537] [2022-01-10 12:05:40,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:40,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:40,593 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 12:05:40,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:40,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949111537] [2022-01-10 12:05:40,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949111537] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:40,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:40,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:05:40,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157981918] [2022-01-10 12:05:40,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:40,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:05:40,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:40,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:05:40,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:05:40,595 INFO L87 Difference]: Start difference. First operand 7336 states and 13648 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 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 12:05:42,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:42,482 INFO L93 Difference]: Finished difference Result 43385 states and 80978 transitions. [2022-01-10 12:05:42,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 12:05:42,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 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 90 [2022-01-10 12:05:42,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:42,543 INFO L225 Difference]: With dead ends: 43385 [2022-01-10 12:05:42,543 INFO L226 Difference]: Without dead ends: 36194 [2022-01-10 12:05:42,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:05:42,561 INFO L933 BasicCegarLoop]: 13584 mSDtfsCounter, 40606 mSDsluCounter, 54144 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40606 SdHoareTripleChecker+Valid, 67728 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:42,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40606 Valid, 67728 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:05:42,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36194 states. [2022-01-10 12:05:43,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36194 to 7358. [2022-01-10 12:05:43,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7358 states, 7354 states have (on average 1.8599401686157193) internal successors, (13678), 7357 states have internal predecessors, (13678), 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 12:05:43,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7358 states to 7358 states and 13678 transitions. [2022-01-10 12:05:43,039 INFO L78 Accepts]: Start accepts. Automaton has 7358 states and 13678 transitions. Word has length 90 [2022-01-10 12:05:43,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:43,040 INFO L470 AbstractCegarLoop]: Abstraction has 7358 states and 13678 transitions. [2022-01-10 12:05:43,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 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 12:05:43,043 INFO L276 IsEmpty]: Start isEmpty. Operand 7358 states and 13678 transitions. [2022-01-10 12:05:43,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 12:05:43,047 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:43,048 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:43,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:05:43,048 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:43,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:43,048 INFO L85 PathProgramCache]: Analyzing trace with hash -765092882, now seen corresponding path program 1 times [2022-01-10 12:05:43,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:43,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997734565] [2022-01-10 12:05:43,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:43,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:43,138 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 12:05:43,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:43,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997734565] [2022-01-10 12:05:43,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997734565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:43,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:43,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:05:43,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452423255] [2022-01-10 12:05:43,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:43,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:05:43,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:43,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:05:43,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:05:43,140 INFO L87 Difference]: Start difference. First operand 7358 states and 13678 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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 12:05:43,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:43,721 INFO L93 Difference]: Finished difference Result 12899 states and 23978 transitions. [2022-01-10 12:05:43,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:05:43,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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 90 [2022-01-10 12:05:43,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:43,731 INFO L225 Difference]: With dead ends: 12899 [2022-01-10 12:05:43,731 INFO L226 Difference]: Without dead ends: 7388 [2022-01-10 12:05:43,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:05:43,736 INFO L933 BasicCegarLoop]: 6801 mSDtfsCounter, 6856 mSDsluCounter, 13622 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6856 SdHoareTripleChecker+Valid, 20423 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:43,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6856 Valid, 20423 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:05:43,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7388 states. [2022-01-10 12:05:44,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7388 to 7355. [2022-01-10 12:05:44,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7355 states, 7351 states have (on average 1.858930757720038) internal successors, (13665), 7354 states have internal predecessors, (13665), 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 12:05:44,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7355 states to 7355 states and 13665 transitions. [2022-01-10 12:05:44,103 INFO L78 Accepts]: Start accepts. Automaton has 7355 states and 13665 transitions. Word has length 90 [2022-01-10 12:05:44,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:44,103 INFO L470 AbstractCegarLoop]: Abstraction has 7355 states and 13665 transitions. [2022-01-10 12:05:44,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 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 12:05:44,103 INFO L276 IsEmpty]: Start isEmpty. Operand 7355 states and 13665 transitions. [2022-01-10 12:05:44,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 12:05:44,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:44,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:44,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:05:44,107 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:44,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:44,108 INFO L85 PathProgramCache]: Analyzing trace with hash -642673709, now seen corresponding path program 1 times [2022-01-10 12:05:44,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:44,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698711309] [2022-01-10 12:05:44,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:44,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:44,171 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 12:05:44,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:44,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698711309] [2022-01-10 12:05:44,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698711309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:44,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:44,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:05:44,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294863839] [2022-01-10 12:05:44,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:44,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:05:44,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:44,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:05:44,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:05:44,172 INFO L87 Difference]: Start difference. First operand 7355 states and 13665 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:46,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:46,329 INFO L93 Difference]: Finished difference Result 19891 states and 36995 transitions. [2022-01-10 12:05:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:05:46,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-01-10 12:05:46,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:46,350 INFO L225 Difference]: With dead ends: 19891 [2022-01-10 12:05:46,350 INFO L226 Difference]: Without dead ends: 12716 [2022-01-10 12:05:46,360 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 12:05:46,361 INFO L933 BasicCegarLoop]: 6890 mSDtfsCounter, 16670 mSDsluCounter, 4971 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16670 SdHoareTripleChecker+Valid, 11861 SdHoareTripleChecker+Invalid, 1533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:46,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16670 Valid, 11861 Invalid, 1533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 12:05:46,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12716 states. [2022-01-10 12:05:46,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12716 to 7355. [2022-01-10 12:05:46,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7355 states, 7351 states have (on average 1.8251938511767107) internal successors, (13417), 7354 states have internal predecessors, (13417), 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 12:05:46,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7355 states to 7355 states and 13417 transitions. [2022-01-10 12:05:46,842 INFO L78 Accepts]: Start accepts. Automaton has 7355 states and 13417 transitions. Word has length 91 [2022-01-10 12:05:46,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:46,843 INFO L470 AbstractCegarLoop]: Abstraction has 7355 states and 13417 transitions. [2022-01-10 12:05:46,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:05:46,843 INFO L276 IsEmpty]: Start isEmpty. Operand 7355 states and 13417 transitions. [2022-01-10 12:05:46,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 12:05:46,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:46,846 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:46,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:05:46,847 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:46,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:46,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1487094703, now seen corresponding path program 1 times [2022-01-10 12:05:46,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:46,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409969040] [2022-01-10 12:05:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:46,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:46,927 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 12:05:46,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:46,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409969040] [2022-01-10 12:05:46,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409969040] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:46,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:46,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:05:46,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426078900] [2022-01-10 12:05:46,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:46,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:05:46,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:46,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:05:46,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:05:46,929 INFO L87 Difference]: Start difference. First operand 7355 states and 13417 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 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 12:05:55,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:05:55,263 INFO L93 Difference]: Finished difference Result 72650 states and 133707 transitions. [2022-01-10 12:05:55,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 12:05:55,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 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 99 [2022-01-10 12:05:55,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:05:55,368 INFO L225 Difference]: With dead ends: 72650 [2022-01-10 12:05:55,368 INFO L226 Difference]: Without dead ends: 65529 [2022-01-10 12:05:55,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-01-10 12:05:55,387 INFO L933 BasicCegarLoop]: 23817 mSDtfsCounter, 51675 mSDsluCounter, 89280 mSDsCounter, 0 mSdLazyCounter, 5486 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51675 SdHoareTripleChecker+Valid, 113097 SdHoareTripleChecker+Invalid, 5783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 5486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-01-10 12:05:55,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51675 Valid, 113097 Invalid, 5783 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [297 Valid, 5486 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-01-10 12:05:55,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65529 states. [2022-01-10 12:05:56,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65529 to 14498. [2022-01-10 12:05:56,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14498 states, 14494 states have (on average 1.828825720987995) internal successors, (26507), 14497 states have internal predecessors, (26507), 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 12:05:56,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14498 states to 14498 states and 26507 transitions. [2022-01-10 12:05:56,655 INFO L78 Accepts]: Start accepts. Automaton has 14498 states and 26507 transitions. Word has length 99 [2022-01-10 12:05:56,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:05:56,656 INFO L470 AbstractCegarLoop]: Abstraction has 14498 states and 26507 transitions. [2022-01-10 12:05:56,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 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 12:05:56,656 INFO L276 IsEmpty]: Start isEmpty. Operand 14498 states and 26507 transitions. [2022-01-10 12:05:56,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 12:05:56,663 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:05:56,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:56,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 12:05:56,663 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:05:56,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:05:56,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1570423656, now seen corresponding path program 1 times [2022-01-10 12:05:56,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:05:56,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265288822] [2022-01-10 12:05:56,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:05:56,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:05:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:05:56,802 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 12:05:56,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:05:56,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265288822] [2022-01-10 12:05:56,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265288822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:05:56,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:05:56,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:05:56,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140083724] [2022-01-10 12:05:56,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:05:56,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:05:56,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:05:56,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:05:56,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:05:56,804 INFO L87 Difference]: Start difference. First operand 14498 states and 26507 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 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 12:06:00,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:06:00,762 INFO L93 Difference]: Finished difference Result 65775 states and 120633 transitions. [2022-01-10 12:06:00,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:06:00,763 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 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 100 [2022-01-10 12:06:00,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:06:00,851 INFO L225 Difference]: With dead ends: 65775 [2022-01-10 12:06:00,851 INFO L226 Difference]: Without dead ends: 53762 [2022-01-10 12:06:00,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:06:00,868 INFO L933 BasicCegarLoop]: 26401 mSDtfsCounter, 39918 mSDsluCounter, 46521 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39918 SdHoareTripleChecker+Valid, 72922 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:06:00,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39918 Valid, 72922 Invalid, 85 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:06:00,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53762 states. [2022-01-10 12:06:02,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53762 to 14534. [2022-01-10 12:06:02,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14534 states, 14530 states have (on average 1.8273916035788025) internal successors, (26552), 14533 states have internal predecessors, (26552), 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 12:06:02,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14534 states to 14534 states and 26552 transitions. [2022-01-10 12:06:02,101 INFO L78 Accepts]: Start accepts. Automaton has 14534 states and 26552 transitions. Word has length 100 [2022-01-10 12:06:02,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:06:02,101 INFO L470 AbstractCegarLoop]: Abstraction has 14534 states and 26552 transitions. [2022-01-10 12:06:02,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 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 12:06:02,101 INFO L276 IsEmpty]: Start isEmpty. Operand 14534 states and 26552 transitions. [2022-01-10 12:06:02,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 12:06:02,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:06:02,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:06:02,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 12:06:02,107 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:06:02,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:06:02,107 INFO L85 PathProgramCache]: Analyzing trace with hash -32721371, now seen corresponding path program 1 times [2022-01-10 12:06:02,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:06:02,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522922724] [2022-01-10 12:06:02,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:06:02,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:06:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:06:02,187 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 12:06:02,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:06:02,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522922724] [2022-01-10 12:06:02,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522922724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:06:02,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:06:02,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:06:02,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176259617] [2022-01-10 12:06:02,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:06:02,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:06:02,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:06:02,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:06:02,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:06:02,189 INFO L87 Difference]: Start difference. First operand 14534 states and 26552 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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 12:06:03,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:06:03,763 INFO L93 Difference]: Finished difference Result 36003 states and 65906 transitions. [2022-01-10 12:06:03,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:06:03,764 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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 101 [2022-01-10 12:06:03,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:06:03,796 INFO L225 Difference]: With dead ends: 36003 [2022-01-10 12:06:03,796 INFO L226 Difference]: Without dead ends: 21578 [2022-01-10 12:06:03,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:06:03,811 INFO L933 BasicCegarLoop]: 13213 mSDtfsCounter, 26259 mSDsluCounter, 13375 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26259 SdHoareTripleChecker+Valid, 26588 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:06:03,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26259 Valid, 26588 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:06:03,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21578 states. [2022-01-10 12:06:05,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21578 to 14457. [2022-01-10 12:06:05,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14457 states, 14453 states have (on average 1.8293779838095896) internal successors, (26440), 14456 states have internal predecessors, (26440), 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 12:06:05,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14457 states to 14457 states and 26440 transitions. [2022-01-10 12:06:05,085 INFO L78 Accepts]: Start accepts. Automaton has 14457 states and 26440 transitions. Word has length 101 [2022-01-10 12:06:05,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:06:05,085 INFO L470 AbstractCegarLoop]: Abstraction has 14457 states and 26440 transitions. [2022-01-10 12:06:05,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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 12:06:05,085 INFO L276 IsEmpty]: Start isEmpty. Operand 14457 states and 26440 transitions. [2022-01-10 12:06:05,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:06:05,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:06:05,091 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:06:05,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 12:06:05,091 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:06:05,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:06:05,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1580545349, now seen corresponding path program 1 times [2022-01-10 12:06:05,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:06:05,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819500501] [2022-01-10 12:06:05,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:06:05,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:06:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:06:05,185 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 12:06:05,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:06:05,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819500501] [2022-01-10 12:06:05,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819500501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:06:05,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:06:05,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:06:05,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722135202] [2022-01-10 12:06:05,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:06:05,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:06:05,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:06:05,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:06:05,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:06:05,187 INFO L87 Difference]: Start difference. First operand 14457 states and 26440 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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)