/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_spec14_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:03:10,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:03:10,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:03:10,112 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:03:10,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:03:10,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:03:10,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:03:10,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:03:10,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:03:10,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:03:10,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:03:10,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:03:10,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:03:10,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:03:10,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:03:10,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:03:10,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:03:10,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:03:10,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:03:10,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:03:10,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:03:10,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:03:10,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:03:10,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:03:10,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:03:10,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:03:10,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:03:10,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:03:10,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:03:10,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:03:10,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:03:10,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:03:10,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:03:10,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:03:10,182 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:03:10,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:03:10,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:03:10,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:03:10,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:03:10,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:03:10,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:03:10,185 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 12:03:10,209 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:03:10,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:03:10,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:03:10,210 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:03:10,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:03:10,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:03:10,212 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:03:10,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:03:10,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:03:10,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:03:10,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:03:10,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:03:10,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:03:10,213 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:03:10,213 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:03:10,213 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:03:10,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:03:10,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:03:10,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:03:10,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:03:10,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:03:10,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:03:10,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:03:10,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:03:10,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:03:10,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:03:10,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:03:10,215 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:03:10,216 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:03:10,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:03:10,216 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:03:10,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:03:10,217 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:03:10,217 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:03:10,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:03:10,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:03:10,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:03:10,479 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:03:10,480 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:03:10,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec14_product03.cil.c [2022-01-10 12:03:10,538 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d51515a67/2350cfa429f0448c8b52485106086e75/FLAGd9b545368 [2022-01-10 12:03:11,016 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:03:11,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product03.cil.c [2022-01-10 12:03:11,038 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d51515a67/2350cfa429f0448c8b52485106086e75/FLAGd9b545368 [2022-01-10 12:03:11,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d51515a67/2350cfa429f0448c8b52485106086e75 [2022-01-10 12:03:11,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:03:11,285 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:03:11,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:03:11,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:03:11,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:03:11,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:03:11" (1/1) ... [2022-01-10 12:03:11,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aa724fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:11, skipping insertion in model container [2022-01-10 12:03:11,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:03:11" (1/1) ... [2022-01-10 12:03:11,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:03:11,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:03:11,837 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product03.cil.c[68958,68971] [2022-01-10 12:03:11,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:03:11,856 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:03:11,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:03:11,954 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_spec14_product03.cil.c[68958,68971] [2022-01-10 12:03:11,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:03:11,959 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:03:12,065 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec14_product03.cil.c[68958,68971] [2022-01-10 12:03:12,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:03:12,087 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:03:12,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:12 WrapperNode [2022-01-10 12:03:12,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:03:12,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:03:12,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:03:12,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:03:12,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:12" (1/1) ... [2022-01-10 12:03:12,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:12" (1/1) ... [2022-01-10 12:03:12,333 INFO L137 Inliner]: procedures = 91, calls = 329, calls flagged for inlining = 182, calls inlined = 571, statements flattened = 18930 [2022-01-10 12:03:12,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:03:12,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:03:12,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:03:12,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:03:12,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:12" (1/1) ... [2022-01-10 12:03:12,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:12" (1/1) ... [2022-01-10 12:03:12,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:12" (1/1) ... [2022-01-10 12:03:12,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:12" (1/1) ... [2022-01-10 12:03:12,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:12" (1/1) ... [2022-01-10 12:03:12,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:12" (1/1) ... [2022-01-10 12:03:12,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:12" (1/1) ... [2022-01-10 12:03:12,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:03:12,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:03:12,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:03:12,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:03:12,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:12" (1/1) ... [2022-01-10 12:03:12,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:03:12,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:03:12,681 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 12:03:12,697 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 12:03:12,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:03:12,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:03:12,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:03:12,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:03:12,901 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:03:12,902 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:03:20,798 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:03:20,838 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:03:20,839 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:03:20,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:03:20 BoogieIcfgContainer [2022-01-10 12:03:20,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:03:20,847 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:03:20,847 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:03:20,848 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:03:20,850 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:03:20" (1/1) ... [2022-01-10 12:03:22,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:03:22 BasicIcfg [2022-01-10 12:03:22,121 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:03:22,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:03:22,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:03:22,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:03:22,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:03:11" (1/4) ... [2022-01-10 12:03:22,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c027737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:03:22, skipping insertion in model container [2022-01-10 12:03:22,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:03:12" (2/4) ... [2022-01-10 12:03:22,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c027737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:03:22, skipping insertion in model container [2022-01-10 12:03:22,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:03:20" (3/4) ... [2022-01-10 12:03:22,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c027737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:03:22, skipping insertion in model container [2022-01-10 12:03:22,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:03:22" (4/4) ... [2022-01-10 12:03:22,128 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product03.cil.cTransformedIcfg [2022-01-10 12:03:22,136 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:03:22,136 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 12:03:22,196 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:03:22,205 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 12:03:22,205 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 12:03:22,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 5561 states, 5555 states have (on average 1.8772277227722771) internal successors, (10428), 5560 states have internal predecessors, (10428), 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 12:03:22,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 12:03:22,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:22,323 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] [2022-01-10 12:03:22,324 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 12:03:22,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:22,329 INFO L85 PathProgramCache]: Analyzing trace with hash -785523410, now seen corresponding path program 1 times [2022-01-10 12:03:22,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:22,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369706945] [2022-01-10 12:03:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:22,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:22,775 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 12:03:22,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:22,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369706945] [2022-01-10 12:03:22,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369706945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:22,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:22,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:03:22,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373203863] [2022-01-10 12:03:22,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:22,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:03:22,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:22,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:03:22,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:03:22,870 INFO L87 Difference]: Start difference. First operand has 5561 states, 5555 states have (on average 1.8772277227722771) internal successors, (10428), 5560 states have internal predecessors, (10428), 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 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 12:03:23,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:23,294 INFO L93 Difference]: Finished difference Result 13361 states and 25061 transitions. [2022-01-10 12:03:23,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:03:23,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2022-01-10 12:03:23,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:23,358 INFO L225 Difference]: With dead ends: 13361 [2022-01-10 12:03:23,359 INFO L226 Difference]: Without dead ends: 7799 [2022-01-10 12:03:23,379 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 12:03:23,385 INFO L933 BasicCegarLoop]: 14630 mSDtfsCounter, 10390 mSDsluCounter, 4233 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10390 SdHoareTripleChecker+Valid, 18863 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:23,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10390 Valid, 18863 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:03:23,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7799 states. [2022-01-10 12:03:23,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7799 to 5549. [2022-01-10 12:03:23,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5549 states, 5544 states have (on average 1.876082251082251) internal successors, (10401), 5548 states have internal predecessors, (10401), 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 12:03:23,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5549 states to 5549 states and 10401 transitions. [2022-01-10 12:03:23,639 INFO L78 Accepts]: Start accepts. Automaton has 5549 states and 10401 transitions. Word has length 48 [2022-01-10 12:03:23,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:23,640 INFO L470 AbstractCegarLoop]: Abstraction has 5549 states and 10401 transitions. [2022-01-10 12:03:23,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 12:03:23,640 INFO L276 IsEmpty]: Start isEmpty. Operand 5549 states and 10401 transitions. [2022-01-10 12:03:23,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 12:03:23,644 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:23,644 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] [2022-01-10 12:03:23,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:03:23,645 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 12:03:23,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:23,648 INFO L85 PathProgramCache]: Analyzing trace with hash 273971776, now seen corresponding path program 1 times [2022-01-10 12:03:23,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:23,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804465271] [2022-01-10 12:03:23,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:23,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:23,768 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 12:03:23,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:23,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804465271] [2022-01-10 12:03:23,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804465271] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:23,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:23,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:03:23,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407727561] [2022-01-10 12:03:23,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:23,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:03:23,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:23,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:03:23,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:03:23,772 INFO L87 Difference]: Start difference. First operand 5549 states and 10401 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 12:03:24,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:24,236 INFO L93 Difference]: Finished difference Result 13263 states and 24863 transitions. [2022-01-10 12:03:24,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:03:24,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2022-01-10 12:03:24,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:24,273 INFO L225 Difference]: With dead ends: 13263 [2022-01-10 12:03:24,274 INFO L226 Difference]: Without dead ends: 7763 [2022-01-10 12:03:24,287 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 12:03:24,288 INFO L933 BasicCegarLoop]: 14487 mSDtfsCounter, 10289 mSDsluCounter, 4170 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10289 SdHoareTripleChecker+Valid, 18657 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 12:03:24,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10289 Valid, 18657 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:03:24,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7763 states. [2022-01-10 12:03:24,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7763 to 5549. [2022-01-10 12:03:24,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5549 states, 5544 states have (on average 1.8715728715728717) internal successors, (10376), 5548 states have internal predecessors, (10376), 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 12:03:24,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5549 states to 5549 states and 10376 transitions. [2022-01-10 12:03:24,503 INFO L78 Accepts]: Start accepts. Automaton has 5549 states and 10376 transitions. Word has length 53 [2022-01-10 12:03:24,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:24,505 INFO L470 AbstractCegarLoop]: Abstraction has 5549 states and 10376 transitions. [2022-01-10 12:03:24,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 12:03:24,509 INFO L276 IsEmpty]: Start isEmpty. Operand 5549 states and 10376 transitions. [2022-01-10 12:03:24,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 12:03:24,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:24,518 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] [2022-01-10 12:03:24,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:03:24,519 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 12:03:24,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:24,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1748598909, now seen corresponding path program 1 times [2022-01-10 12:03:24,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:24,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457193928] [2022-01-10 12:03:24,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:24,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:24,705 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 12:03:24,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:24,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457193928] [2022-01-10 12:03:24,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457193928] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:24,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:24,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:03:24,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288174575] [2022-01-10 12:03:24,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:24,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:03:24,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:24,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:03:24,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:03:24,709 INFO L87 Difference]: Start difference. First operand 5549 states and 10376 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:25,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:25,814 INFO L93 Difference]: Finished difference Result 23172 states and 43406 transitions. [2022-01-10 12:03:25,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:03:25,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 12:03:25,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:25,887 INFO L225 Difference]: With dead ends: 23172 [2022-01-10 12:03:25,888 INFO L226 Difference]: Without dead ends: 17651 [2022-01-10 12:03:25,904 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 12:03:25,905 INFO L933 BasicCegarLoop]: 28900 mSDtfsCounter, 30808 mSDsluCounter, 27045 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30808 SdHoareTripleChecker+Valid, 55945 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:25,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30808 Valid, 55945 Invalid, 69 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:03:25,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17651 states. [2022-01-10 12:03:26,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17651 to 5531. [2022-01-10 12:03:26,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5531 states, 5526 states have (on average 1.873326094824466) internal successors, (10352), 5530 states have internal predecessors, (10352), 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 12:03:26,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5531 states to 5531 states and 10352 transitions. [2022-01-10 12:03:26,234 INFO L78 Accepts]: Start accepts. Automaton has 5531 states and 10352 transitions. Word has length 56 [2022-01-10 12:03:26,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:26,234 INFO L470 AbstractCegarLoop]: Abstraction has 5531 states and 10352 transitions. [2022-01-10 12:03:26,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:03:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 5531 states and 10352 transitions. [2022-01-10 12:03:26,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 12:03:26,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:26,256 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] [2022-01-10 12:03:26,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:03:26,256 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 12:03:26,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:26,257 INFO L85 PathProgramCache]: Analyzing trace with hash -821357604, now seen corresponding path program 1 times [2022-01-10 12:03:26,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:26,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612862458] [2022-01-10 12:03:26,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:26,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:26,348 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 12:03:26,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:26,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612862458] [2022-01-10 12:03:26,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612862458] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:26,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:26,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:03:26,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720489603] [2022-01-10 12:03:26,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:26,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:03:26,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:26,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:03:26,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:03:26,352 INFO L87 Difference]: Start difference. First operand 5531 states and 10352 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 12:03:26,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:26,924 INFO L93 Difference]: Finished difference Result 21983 states and 41187 transitions. [2022-01-10 12:03:26,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:03:26,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 58 [2022-01-10 12:03:26,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:26,977 INFO L225 Difference]: With dead ends: 21983 [2022-01-10 12:03:26,977 INFO L226 Difference]: Without dead ends: 16474 [2022-01-10 12:03:26,995 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 12:03:27,004 INFO L933 BasicCegarLoop]: 16432 mSDtfsCounter, 30865 mSDsluCounter, 30801 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30865 SdHoareTripleChecker+Valid, 47233 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:27,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30865 Valid, 47233 Invalid, 47 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:03:27,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16474 states. [2022-01-10 12:03:27,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16474 to 5535. [2022-01-10 12:03:27,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5535 states, 5530 states have (on average 1.8725135623869802) internal successors, (10355), 5534 states have internal predecessors, (10355), 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 12:03:27,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5535 states to 5535 states and 10355 transitions. [2022-01-10 12:03:27,334 INFO L78 Accepts]: Start accepts. Automaton has 5535 states and 10355 transitions. Word has length 58 [2022-01-10 12:03:27,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:27,335 INFO L470 AbstractCegarLoop]: Abstraction has 5535 states and 10355 transitions. [2022-01-10 12:03:27,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 12:03:27,336 INFO L276 IsEmpty]: Start isEmpty. Operand 5535 states and 10355 transitions. [2022-01-10 12:03:27,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 12:03:27,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:27,339 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] [2022-01-10 12:03:27,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:03:27,339 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 12:03:27,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:27,340 INFO L85 PathProgramCache]: Analyzing trace with hash -2004704901, now seen corresponding path program 1 times [2022-01-10 12:03:27,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:27,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124545717] [2022-01-10 12:03:27,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:27,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:27,507 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 12:03:27,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:27,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124545717] [2022-01-10 12:03:27,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124545717] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:27,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:27,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:03:27,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908545922] [2022-01-10 12:03:27,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:27,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:03:27,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:27,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:03:27,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:03:27,511 INFO L87 Difference]: Start difference. First operand 5535 states and 10355 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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 12:03:28,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:28,314 INFO L93 Difference]: Finished difference Result 22199 states and 41570 transitions. [2022-01-10 12:03:28,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:03:28,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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 58 [2022-01-10 12:03:28,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:28,366 INFO L225 Difference]: With dead ends: 22199 [2022-01-10 12:03:28,367 INFO L226 Difference]: Without dead ends: 16679 [2022-01-10 12:03:28,382 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 12:03:28,383 INFO L933 BasicCegarLoop]: 31212 mSDtfsCounter, 37327 mSDsluCounter, 33577 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37327 SdHoareTripleChecker+Valid, 64789 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:28,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37327 Valid, 64789 Invalid, 42 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:03:28,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16679 states. [2022-01-10 12:03:28,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16679 to 5527. [2022-01-10 12:03:28,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5527 states, 5522 states have (on average 1.8730532415791379) internal successors, (10343), 5526 states have internal predecessors, (10343), 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 12:03:28,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5527 states to 5527 states and 10343 transitions. [2022-01-10 12:03:28,695 INFO L78 Accepts]: Start accepts. Automaton has 5527 states and 10343 transitions. Word has length 58 [2022-01-10 12:03:28,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:28,695 INFO L470 AbstractCegarLoop]: Abstraction has 5527 states and 10343 transitions. [2022-01-10 12:03:28,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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 12:03:28,695 INFO L276 IsEmpty]: Start isEmpty. Operand 5527 states and 10343 transitions. [2022-01-10 12:03:28,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 12:03:28,697 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:28,697 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] [2022-01-10 12:03:28,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:03:28,698 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:03:28,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:28,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1215644003, now seen corresponding path program 1 times [2022-01-10 12:03:28,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:28,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515373935] [2022-01-10 12:03:28,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:28,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:28,770 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 12:03:28,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:28,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515373935] [2022-01-10 12:03:28,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515373935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:28,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:28,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:03:28,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538213677] [2022-01-10 12:03:28,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:28,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:03:28,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:28,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:03:28,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:03:28,772 INFO L87 Difference]: Start difference. First operand 5527 states and 10343 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 12:03:29,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:29,295 INFO L93 Difference]: Finished difference Result 15448 states and 28933 transitions. [2022-01-10 12:03:29,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:03:29,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 59 [2022-01-10 12:03:29,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:29,328 INFO L225 Difference]: With dead ends: 15448 [2022-01-10 12:03:29,329 INFO L226 Difference]: Without dead ends: 9949 [2022-01-10 12:03:29,344 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 12:03:29,345 INFO L933 BasicCegarLoop]: 10305 mSDtfsCounter, 28918 mSDsluCounter, 12466 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28918 SdHoareTripleChecker+Valid, 22771 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:29,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28918 Valid, 22771 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:03:29,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9949 states. [2022-01-10 12:03:29,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9949 to 5529. [2022-01-10 12:03:29,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5529 states, 5524 states have (on average 1.8725561187545257) internal successors, (10344), 5528 states have internal predecessors, (10344), 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 12:03:29,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5529 states to 5529 states and 10344 transitions. [2022-01-10 12:03:29,700 INFO L78 Accepts]: Start accepts. Automaton has 5529 states and 10344 transitions. Word has length 59 [2022-01-10 12:03:29,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:29,700 INFO L470 AbstractCegarLoop]: Abstraction has 5529 states and 10344 transitions. [2022-01-10 12:03:29,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 12:03:29,701 INFO L276 IsEmpty]: Start isEmpty. Operand 5529 states and 10344 transitions. [2022-01-10 12:03:29,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 12:03:29,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:29,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:03:29,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:03:29,703 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 12:03:29,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:29,704 INFO L85 PathProgramCache]: Analyzing trace with hash -591146250, now seen corresponding path program 1 times [2022-01-10 12:03:29,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:29,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919443919] [2022-01-10 12:03:29,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:29,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:29,765 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 12:03:29,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:29,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919443919] [2022-01-10 12:03:29,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919443919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:29,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:29,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:03:29,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123617912] [2022-01-10 12:03:29,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:29,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:03:29,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:29,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:03:29,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:03:29,767 INFO L87 Difference]: Start difference. First operand 5529 states and 10344 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 12:03:31,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:31,758 INFO L93 Difference]: Finished difference Result 15532 states and 29120 transitions. [2022-01-10 12:03:31,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:03:31,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2022-01-10 12:03:31,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:31,791 INFO L225 Difference]: With dead ends: 15532 [2022-01-10 12:03:31,791 INFO L226 Difference]: Without dead ends: 10039 [2022-01-10 12:03:31,805 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 12:03:31,806 INFO L933 BasicCegarLoop]: 10314 mSDtfsCounter, 27231 mSDsluCounter, 8413 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27231 SdHoareTripleChecker+Valid, 18727 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:31,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27231 Valid, 18727 Invalid, 1590 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [355 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 12:03:31,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10039 states. [2022-01-10 12:03:32,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10039 to 5529. [2022-01-10 12:03:32,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5529 states, 5524 states have (on average 1.842867487328023) internal successors, (10180), 5528 states have internal predecessors, (10180), 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 12:03:32,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5529 states to 5529 states and 10180 transitions. [2022-01-10 12:03:32,080 INFO L78 Accepts]: Start accepts. Automaton has 5529 states and 10180 transitions. Word has length 60 [2022-01-10 12:03:32,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:32,082 INFO L470 AbstractCegarLoop]: Abstraction has 5529 states and 10180 transitions. [2022-01-10 12:03:32,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 12:03:32,082 INFO L276 IsEmpty]: Start isEmpty. Operand 5529 states and 10180 transitions. [2022-01-10 12:03:32,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:03:32,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:32,085 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] [2022-01-10 12:03:32,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:03:32,085 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 12:03:32,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:32,085 INFO L85 PathProgramCache]: Analyzing trace with hash 136976659, now seen corresponding path program 1 times [2022-01-10 12:03:32,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:32,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802098860] [2022-01-10 12:03:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:32,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:32,179 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 12:03:32,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:32,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802098860] [2022-01-10 12:03:32,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802098860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:32,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:32,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:03:32,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316413086] [2022-01-10 12:03:32,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:32,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:03:32,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:32,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:03:32,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:03:32,181 INFO L87 Difference]: Start difference. First operand 5529 states and 10180 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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 12:03:38,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:38,969 INFO L93 Difference]: Finished difference Result 58564 states and 109113 transitions. [2022-01-10 12:03:38,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:03:38,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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 72 [2022-01-10 12:03:38,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:39,276 INFO L225 Difference]: With dead ends: 58564 [2022-01-10 12:03:39,276 INFO L226 Difference]: Without dead ends: 53089 [2022-01-10 12:03:39,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-01-10 12:03:39,298 INFO L933 BasicCegarLoop]: 49339 mSDtfsCounter, 64289 mSDsluCounter, 152586 mSDsCounter, 0 mSdLazyCounter, 5151 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64289 SdHoareTripleChecker+Valid, 201925 SdHoareTripleChecker+Invalid, 5546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 5151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:39,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64289 Valid, 201925 Invalid, 5546 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [395 Valid, 5151 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-01-10 12:03:39,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53089 states. [2022-01-10 12:03:39,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53089 to 10950. [2022-01-10 12:03:39,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10950 states, 10945 states have (on average 1.8439470077661033) internal successors, (20182), 10949 states have internal predecessors, (20182), 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 12:03:40,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10950 states to 10950 states and 20182 transitions. [2022-01-10 12:03:40,012 INFO L78 Accepts]: Start accepts. Automaton has 10950 states and 20182 transitions. Word has length 72 [2022-01-10 12:03:40,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:40,013 INFO L470 AbstractCegarLoop]: Abstraction has 10950 states and 20182 transitions. [2022-01-10 12:03:40,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 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 12:03:40,013 INFO L276 IsEmpty]: Start isEmpty. Operand 10950 states and 20182 transitions. [2022-01-10 12:03:40,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 12:03:40,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:40,017 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 12:03:40,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:03:40,018 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 12:03:40,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:40,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1099061341, now seen corresponding path program 1 times [2022-01-10 12:03:40,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:40,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167779925] [2022-01-10 12:03:40,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:40,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:40,095 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 12:03:40,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:40,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167779925] [2022-01-10 12:03:40,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167779925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:40,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:40,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:03:40,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941245898] [2022-01-10 12:03:40,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:40,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:03:40,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:40,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:03:40,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:03:40,100 INFO L87 Difference]: Start difference. First operand 10950 states and 20182 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 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 12:03:44,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:44,463 INFO L93 Difference]: Finished difference Result 57513 states and 105952 transitions. [2022-01-10 12:03:44,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:03:44,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 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 12:03:44,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:44,597 INFO L225 Difference]: With dead ends: 57513 [2022-01-10 12:03:44,597 INFO L226 Difference]: Without dead ends: 46660 [2022-01-10 12:03:44,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:03:44,632 INFO L933 BasicCegarLoop]: 22733 mSDtfsCounter, 44172 mSDsluCounter, 41697 mSDsCounter, 0 mSdLazyCounter, 2537 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44172 SdHoareTripleChecker+Valid, 64430 SdHoareTripleChecker+Invalid, 2911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 2537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:44,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44172 Valid, 64430 Invalid, 2911 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [374 Valid, 2537 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 12:03:44,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46660 states. [2022-01-10 12:03:45,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46660 to 15372. [2022-01-10 12:03:45,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15372 states, 15367 states have (on average 1.841478492874341) internal successors, (28298), 15371 states have internal predecessors, (28298), 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 12:03:45,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15372 states to 15372 states and 28298 transitions. [2022-01-10 12:03:45,631 INFO L78 Accepts]: Start accepts. Automaton has 15372 states and 28298 transitions. Word has length 74 [2022-01-10 12:03:45,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:45,631 INFO L470 AbstractCegarLoop]: Abstraction has 15372 states and 28298 transitions. [2022-01-10 12:03:45,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 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 12:03:45,632 INFO L276 IsEmpty]: Start isEmpty. Operand 15372 states and 28298 transitions. [2022-01-10 12:03:45,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 12:03:45,636 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:45,636 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] [2022-01-10 12:03:45,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:03:45,636 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 12:03:45,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:45,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1083315494, now seen corresponding path program 1 times [2022-01-10 12:03:45,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:45,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836313133] [2022-01-10 12:03:45,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:45,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:45,720 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 12:03:45,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:45,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836313133] [2022-01-10 12:03:45,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836313133] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:45,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:45,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:03:45,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508405981] [2022-01-10 12:03:45,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:45,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:03:45,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:45,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:03:45,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:03:45,722 INFO L87 Difference]: Start difference. First operand 15372 states and 28298 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 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 12:03:49,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:49,871 INFO L93 Difference]: Finished difference Result 62242 states and 115476 transitions. [2022-01-10 12:03:49,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:03:49,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2022-01-10 12:03:49,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:49,966 INFO L225 Difference]: With dead ends: 62242 [2022-01-10 12:03:49,966 INFO L226 Difference]: Without dead ends: 46928 [2022-01-10 12:03:50,005 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 12:03:50,006 INFO L933 BasicCegarLoop]: 29907 mSDtfsCounter, 16887 mSDsluCounter, 28153 mSDsCounter, 0 mSdLazyCounter, 3179 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16887 SdHoareTripleChecker+Valid, 58060 SdHoareTripleChecker+Invalid, 3471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 3179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:50,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16887 Valid, 58060 Invalid, 3471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 3179 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 12:03:50,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46928 states. [2022-01-10 12:03:51,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46928 to 26134. [2022-01-10 12:03:51,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26134 states, 26129 states have (on average 1.8246392896781354) internal successors, (47676), 26133 states have internal predecessors, (47676), 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 12:03:51,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26134 states to 26134 states and 47676 transitions. [2022-01-10 12:03:51,338 INFO L78 Accepts]: Start accepts. Automaton has 26134 states and 47676 transitions. Word has length 75 [2022-01-10 12:03:51,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:51,339 INFO L470 AbstractCegarLoop]: Abstraction has 26134 states and 47676 transitions. [2022-01-10 12:03:51,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 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 12:03:51,339 INFO L276 IsEmpty]: Start isEmpty. Operand 26134 states and 47676 transitions. [2022-01-10 12:03:51,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 12:03:51,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:51,343 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] [2022-01-10 12:03:51,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:03:51,343 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 12:03:51,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:51,344 INFO L85 PathProgramCache]: Analyzing trace with hash -462582017, now seen corresponding path program 1 times [2022-01-10 12:03:51,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:51,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566273415] [2022-01-10 12:03:51,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:51,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:51,416 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 12:03:51,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:51,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566273415] [2022-01-10 12:03:51,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566273415] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:51,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:51,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:03:51,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701123000] [2022-01-10 12:03:51,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:51,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:03:51,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:51,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:03:51,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:03:51,419 INFO L87 Difference]: Start difference. First operand 26134 states and 47676 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 12:03:52,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:52,816 INFO L93 Difference]: Finished difference Result 54302 states and 99154 transitions. [2022-01-10 12:03:52,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:03:52,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 75 [2022-01-10 12:03:52,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:52,861 INFO L225 Difference]: With dead ends: 54302 [2022-01-10 12:03:52,861 INFO L226 Difference]: Without dead ends: 28193 [2022-01-10 12:03:52,882 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 12:03:52,883 INFO L933 BasicCegarLoop]: 11507 mSDtfsCounter, 30788 mSDsluCounter, 17871 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30788 SdHoareTripleChecker+Valid, 29378 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:52,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30788 Valid, 29378 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:03:52,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28193 states. [2022-01-10 12:03:53,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28193 to 17035. [2022-01-10 12:03:53,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17035 states, 17030 states have (on average 1.8248385202583677) internal successors, (31077), 17034 states have internal predecessors, (31077), 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 12:03:53,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17035 states to 17035 states and 31077 transitions. [2022-01-10 12:03:53,674 INFO L78 Accepts]: Start accepts. Automaton has 17035 states and 31077 transitions. Word has length 75 [2022-01-10 12:03:53,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:03:53,675 INFO L470 AbstractCegarLoop]: Abstraction has 17035 states and 31077 transitions. [2022-01-10 12:03:53,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 12:03:53,675 INFO L276 IsEmpty]: Start isEmpty. Operand 17035 states and 31077 transitions. [2022-01-10 12:03:53,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 12:03:53,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:03:53,677 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] [2022-01-10 12:03:53,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:03:53,677 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:03:53,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:03:53,678 INFO L85 PathProgramCache]: Analyzing trace with hash -150217548, now seen corresponding path program 1 times [2022-01-10 12:03:53,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:03:53,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597520170] [2022-01-10 12:03:53,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:03:53,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:03:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:03:53,748 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 12:03:53,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:03:53,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597520170] [2022-01-10 12:03:53,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597520170] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:03:53,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:03:53,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:03:53,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722226117] [2022-01-10 12:03:53,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:03:53,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:03:53,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:03:53,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:03:53,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:03:53,750 INFO L87 Difference]: Start difference. First operand 17035 states and 31077 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 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 12:03:58,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:03:58,838 INFO L93 Difference]: Finished difference Result 138276 states and 252746 transitions. [2022-01-10 12:03:58,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:03:58,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 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 77 [2022-01-10 12:03:58,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:03:59,094 INFO L225 Difference]: With dead ends: 138276 [2022-01-10 12:03:59,095 INFO L226 Difference]: Without dead ends: 121287 [2022-01-10 12:03:59,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:03:59,139 INFO L933 BasicCegarLoop]: 18096 mSDtfsCounter, 68172 mSDsluCounter, 49138 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68172 SdHoareTripleChecker+Valid, 67234 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:03:59,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68172 Valid, 67234 Invalid, 434 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [136 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:03:59,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121287 states. [2022-01-10 12:04:01,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121287 to 33052. [2022-01-10 12:04:01,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33052 states, 33047 states have (on average 1.8246436892910098) internal successors, (60299), 33051 states have internal predecessors, (60299), 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 12:04:01,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33052 states to 33052 states and 60299 transitions. [2022-01-10 12:04:01,373 INFO L78 Accepts]: Start accepts. Automaton has 33052 states and 60299 transitions. Word has length 77 [2022-01-10 12:04:01,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:04:01,373 INFO L470 AbstractCegarLoop]: Abstraction has 33052 states and 60299 transitions. [2022-01-10 12:04:01,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 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 12:04:01,373 INFO L276 IsEmpty]: Start isEmpty. Operand 33052 states and 60299 transitions. [2022-01-10 12:04:01,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 12:04:01,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:04:01,376 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] [2022-01-10 12:04:01,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:04:01,376 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 12:04:01,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:04:01,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1800082707, now seen corresponding path program 1 times [2022-01-10 12:04:01,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:04:01,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794512478] [2022-01-10 12:04:01,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:04:01,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:04:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:04:01,498 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 12:04:01,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:04:01,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794512478] [2022-01-10 12:04:01,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794512478] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:04:01,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:04:01,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:04:01,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607514910] [2022-01-10 12:04:01,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:04:01,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:04:01,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:04:01,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:04:01,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:04:01,499 INFO L87 Difference]: Start difference. First operand 33052 states and 60299 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 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)