/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 14:18:29,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 14:18:29,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 14:18:29,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 14:18:29,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 14:18:29,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 14:18:29,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 14:18:29,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 14:18:30,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 14:18:30,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 14:18:30,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 14:18:30,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 14:18:30,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 14:18:30,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 14:18:30,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 14:18:30,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 14:18:30,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 14:18:30,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 14:18:30,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 14:18:30,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 14:18:30,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 14:18:30,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 14:18:30,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 14:18:30,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 14:18:30,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 14:18:30,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 14:18:30,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 14:18:30,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 14:18:30,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 14:18:30,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 14:18:30,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 14:18:30,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 14:18:30,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 14:18:30,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 14:18:30,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 14:18:30,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 14:18:30,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 14:18:30,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 14:18:30,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 14:18:30,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 14:18:30,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 14:18:30,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 14:18:30,046 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 14:18:30,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 14:18:30,047 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 14:18:30,047 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 14:18:30,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 14:18:30,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 14:18:30,048 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 14:18:30,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 14:18:30,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 14:18:30,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 14:18:30,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 14:18:30,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 14:18:30,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 14:18:30,049 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 14:18:30,050 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 14:18:30,050 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 14:18:30,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 14:18:30,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 14:18:30,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 14:18:30,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 14:18:30,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 14:18:30,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:18:30,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 14:18:30,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 14:18:30,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 14:18:30,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 14:18:30,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 14:18:30,051 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 14:18:30,052 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 14:18:30,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 14:18:30,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 14:18:30,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 14:18:30,053 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 14:18:30,053 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 14:18:30,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 14:18:30,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 14:18:30,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 14:18:30,300 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 14:18:30,300 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 14:18:30,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c [2022-01-10 14:18:30,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a54e958f/1e517e167a014d228cc7c88544155fae/FLAG1f8491296 [2022-01-10 14:18:30,722 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 14:18:30,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c [2022-01-10 14:18:30,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a54e958f/1e517e167a014d228cc7c88544155fae/FLAG1f8491296 [2022-01-10 14:18:31,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a54e958f/1e517e167a014d228cc7c88544155fae [2022-01-10 14:18:31,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 14:18:31,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 14:18:31,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 14:18:31,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 14:18:31,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 14:18:31,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:18:31" (1/1) ... [2022-01-10 14:18:31,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec736a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:31, skipping insertion in model container [2022-01-10 14:18:31,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:18:31" (1/1) ... [2022-01-10 14:18:31,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 14:18:31,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 14:18:31,267 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c[728,741] [2022-01-10 14:18:31,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:18:31,342 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 14:18:31,352 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c[728,741] [2022-01-10 14:18:31,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 14:18:31,389 INFO L208 MainTranslator]: Completed translation [2022-01-10 14:18:31,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:31 WrapperNode [2022-01-10 14:18:31,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 14:18:31,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 14:18:31,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 14:18:31,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 14:18:31,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:31" (1/1) ... [2022-01-10 14:18:31,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:31" (1/1) ... [2022-01-10 14:18:31,424 INFO L137 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 276 [2022-01-10 14:18:31,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 14:18:31,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 14:18:31,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 14:18:31,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 14:18:31,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:31" (1/1) ... [2022-01-10 14:18:31,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:31" (1/1) ... [2022-01-10 14:18:31,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:31" (1/1) ... [2022-01-10 14:18:31,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:31" (1/1) ... [2022-01-10 14:18:31,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:31" (1/1) ... [2022-01-10 14:18:31,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:31" (1/1) ... [2022-01-10 14:18:31,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:31" (1/1) ... [2022-01-10 14:18:31,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 14:18:31,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 14:18:31,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 14:18:31,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 14:18:31,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:31" (1/1) ... [2022-01-10 14:18:31,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 14:18:31,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:18:31,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 14:18:31,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 14:18:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 14:18:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 14:18:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 14:18:31,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 14:18:31,618 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 14:18:31,619 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 14:18:31,946 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 14:18:31,952 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 14:18:31,952 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-10 14:18:31,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:18:31 BoogieIcfgContainer [2022-01-10 14:18:31,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 14:18:31,955 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 14:18:31,955 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 14:18:31,956 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 14:18:31,959 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:18:31" (1/1) ... [2022-01-10 14:18:32,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:18:32 BasicIcfg [2022-01-10 14:18:32,050 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 14:18:32,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 14:18:32,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 14:18:32,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 14:18:32,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:18:31" (1/4) ... [2022-01-10 14:18:32,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e21e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:18:32, skipping insertion in model container [2022-01-10 14:18:32,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:18:31" (2/4) ... [2022-01-10 14:18:32,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e21e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:18:32, skipping insertion in model container [2022-01-10 14:18:32,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:18:31" (3/4) ... [2022-01-10 14:18:32,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e21e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 02:18:32, skipping insertion in model container [2022-01-10 14:18:32,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 02:18:32" (4/4) ... [2022-01-10 14:18:32,057 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_3a.c.cil.cTransformedIcfg [2022-01-10 14:18:32,061 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 14:18:32,062 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 14:18:32,097 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 14:18:32,102 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 14:18:32,103 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 14:18:32,115 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 70 states have (on average 1.7714285714285714) internal successors, (124), 71 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:32,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 14:18:32,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:18:32,120 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] [2022-01-10 14:18:32,121 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:18:32,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:18:32,125 INFO L85 PathProgramCache]: Analyzing trace with hash 611487743, now seen corresponding path program 1 times [2022-01-10 14:18:32,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:18:32,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536415141] [2022-01-10 14:18:32,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:18:32,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:18:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:18:32,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:18:32,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:18:32,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536415141] [2022-01-10 14:18:32,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536415141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:18:32,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:18:32,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:18:32,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283269023] [2022-01-10 14:18:32,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:18:32,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:18:32,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:18:32,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:18:32,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:18:32,430 INFO L87 Difference]: Start difference. First operand has 72 states, 70 states have (on average 1.7714285714285714) internal successors, (124), 71 states have internal predecessors, (124), 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 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:32,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:18:32,593 INFO L93 Difference]: Finished difference Result 135 states and 228 transitions. [2022-01-10 14:18:32,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:18:32,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2022-01-10 14:18:32,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:18:32,611 INFO L225 Difference]: With dead ends: 135 [2022-01-10 14:18:32,611 INFO L226 Difference]: Without dead ends: 68 [2022-01-10 14:18:32,614 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 14:18:32,620 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 5 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:18:32,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 154 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:18:32,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-01-10 14:18:32,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2022-01-10 14:18:32,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.492063492063492) internal successors, (94), 63 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:32,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 94 transitions. [2022-01-10 14:18:32,685 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 94 transitions. Word has length 24 [2022-01-10 14:18:32,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:18:32,686 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 94 transitions. [2022-01-10 14:18:32,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:32,686 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 94 transitions. [2022-01-10 14:18:32,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 14:18:32,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:18:32,688 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] [2022-01-10 14:18:32,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 14:18:32,688 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:18:32,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:18:32,689 INFO L85 PathProgramCache]: Analyzing trace with hash -530159138, now seen corresponding path program 1 times [2022-01-10 14:18:32,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:18:32,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754293989] [2022-01-10 14:18:32,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:18:32,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:18:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:18:32,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:18:32,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:18:32,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754293989] [2022-01-10 14:18:32,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754293989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:18:32,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:18:32,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:18:32,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236390000] [2022-01-10 14:18:32,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:18:32,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:18:32,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:18:32,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:18:32,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:18:32,816 INFO L87 Difference]: Start difference. First operand 64 states and 94 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:32,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:18:32,833 INFO L93 Difference]: Finished difference Result 72 states and 103 transitions. [2022-01-10 14:18:32,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:18:32,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 27 [2022-01-10 14:18:32,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:18:32,835 INFO L225 Difference]: With dead ends: 72 [2022-01-10 14:18:32,835 INFO L226 Difference]: Without dead ends: 64 [2022-01-10 14:18:32,836 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 14:18:32,837 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:18:32,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:18:32,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-10 14:18:32,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-01-10 14:18:32,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.4761904761904763) internal successors, (93), 63 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:32,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 93 transitions. [2022-01-10 14:18:32,844 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 93 transitions. Word has length 27 [2022-01-10 14:18:32,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:18:32,845 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 93 transitions. [2022-01-10 14:18:32,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:32,845 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 93 transitions. [2022-01-10 14:18:32,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-10 14:18:32,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:18:32,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:18:32,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 14:18:32,847 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:18:32,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:18:32,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1802121558, now seen corresponding path program 1 times [2022-01-10 14:18:32,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:18:32,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888724134] [2022-01-10 14:18:32,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:18:32,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:18:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:18:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:18:32,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:18:32,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888724134] [2022-01-10 14:18:32,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888724134] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:18:32,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:18:32,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 14:18:32,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192224958] [2022-01-10 14:18:32,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:18:32,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 14:18:32,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:18:32,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 14:18:32,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 14:18:32,969 INFO L87 Difference]: Start difference. First operand 64 states and 93 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:33,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:18:33,056 INFO L93 Difference]: Finished difference Result 127 states and 183 transitions. [2022-01-10 14:18:33,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 14:18:33,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-10 14:18:33,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:18:33,060 INFO L225 Difference]: With dead ends: 127 [2022-01-10 14:18:33,060 INFO L226 Difference]: Without dead ends: 74 [2022-01-10 14:18:33,064 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 14:18:33,065 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 10 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:18:33,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 154 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:18:33,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-10 14:18:33,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2022-01-10 14:18:33,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.4428571428571428) internal successors, (101), 70 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:33,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 101 transitions. [2022-01-10 14:18:33,073 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 101 transitions. Word has length 29 [2022-01-10 14:18:33,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:18:33,073 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 101 transitions. [2022-01-10 14:18:33,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:33,073 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 101 transitions. [2022-01-10 14:18:33,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-10 14:18:33,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:18:33,074 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] [2022-01-10 14:18:33,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 14:18:33,079 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:18:33,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:18:33,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1552418962, now seen corresponding path program 1 times [2022-01-10 14:18:33,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:18:33,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229821567] [2022-01-10 14:18:33,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:18:33,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:18:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:18:33,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:18:33,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:18:33,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229821567] [2022-01-10 14:18:33,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229821567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:18:33,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:18:33,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 14:18:33,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483066322] [2022-01-10 14:18:33,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:18:33,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 14:18:33,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:18:33,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 14:18:33,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 14:18:33,213 INFO L87 Difference]: Start difference. First operand 71 states and 101 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:33,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:18:33,393 INFO L93 Difference]: Finished difference Result 167 states and 227 transitions. [2022-01-10 14:18:33,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 14:18:33,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-01-10 14:18:33,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:18:33,399 INFO L225 Difference]: With dead ends: 167 [2022-01-10 14:18:33,399 INFO L226 Difference]: Without dead ends: 163 [2022-01-10 14:18:33,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-10 14:18:33,410 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 221 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:18:33,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 397 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:18:33,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-01-10 14:18:33,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 99. [2022-01-10 14:18:33,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.4591836734693877) internal successors, (143), 98 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 143 transitions. [2022-01-10 14:18:33,424 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 143 transitions. Word has length 31 [2022-01-10 14:18:33,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:18:33,424 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 143 transitions. [2022-01-10 14:18:33,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:33,425 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 143 transitions. [2022-01-10 14:18:33,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 14:18:33,426 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:18:33,426 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] [2022-01-10 14:18:33,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 14:18:33,426 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:18:33,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:18:33,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1491351416, now seen corresponding path program 1 times [2022-01-10 14:18:33,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:18:33,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624030958] [2022-01-10 14:18:33,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:18:33,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:18:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:18:33,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:18:33,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:18:33,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624030958] [2022-01-10 14:18:33,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624030958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:18:33,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:18:33,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:18:33,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740646341] [2022-01-10 14:18:33,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:18:33,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:18:33,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:18:33,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:18:33,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:18:33,486 INFO L87 Difference]: Start difference. First operand 99 states and 143 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:33,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:18:33,584 INFO L93 Difference]: Finished difference Result 177 states and 253 transitions. [2022-01-10 14:18:33,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:18:33,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 33 [2022-01-10 14:18:33,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:18:33,587 INFO L225 Difference]: With dead ends: 177 [2022-01-10 14:18:33,587 INFO L226 Difference]: Without dead ends: 143 [2022-01-10 14:18:33,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:18:33,588 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 121 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:18:33,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 292 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:18:33,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-01-10 14:18:33,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 105. [2022-01-10 14:18:33,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.4326923076923077) internal successors, (149), 104 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:33,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 149 transitions. [2022-01-10 14:18:33,599 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 149 transitions. Word has length 33 [2022-01-10 14:18:33,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:18:33,599 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 149 transitions. [2022-01-10 14:18:33,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:33,600 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 149 transitions. [2022-01-10 14:18:33,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 14:18:33,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:18:33,601 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] [2022-01-10 14:18:33,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 14:18:33,601 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:18:33,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:18:33,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1996910041, now seen corresponding path program 1 times [2022-01-10 14:18:33,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:18:33,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786401080] [2022-01-10 14:18:33,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:18:33,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:18:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:18:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:18:33,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:18:33,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786401080] [2022-01-10 14:18:33,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786401080] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:18:33,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:18:33,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 14:18:33,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364218211] [2022-01-10 14:18:33,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:18:33,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 14:18:33,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:18:33,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 14:18:33,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 14:18:33,666 INFO L87 Difference]: Start difference. First operand 105 states and 149 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:33,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:18:33,737 INFO L93 Difference]: Finished difference Result 135 states and 180 transitions. [2022-01-10 14:18:33,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 14:18:33,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 33 [2022-01-10 14:18:33,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:18:33,739 INFO L225 Difference]: With dead ends: 135 [2022-01-10 14:18:33,739 INFO L226 Difference]: Without dead ends: 130 [2022-01-10 14:18:33,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-01-10 14:18:33,740 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 95 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:18:33,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 385 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:18:33,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-01-10 14:18:33,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 120. [2022-01-10 14:18:33,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.403361344537815) internal successors, (167), 119 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:33,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 167 transitions. [2022-01-10 14:18:33,749 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 167 transitions. Word has length 33 [2022-01-10 14:18:33,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:18:33,750 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 167 transitions. [2022-01-10 14:18:33,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:33,750 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 167 transitions. [2022-01-10 14:18:33,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 14:18:33,751 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:18:33,751 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] [2022-01-10 14:18:33,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 14:18:33,751 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:18:33,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:18:33,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1995986520, now seen corresponding path program 1 times [2022-01-10 14:18:33,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:18:33,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776710436] [2022-01-10 14:18:33,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:18:33,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:18:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:18:33,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:18:33,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:18:33,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776710436] [2022-01-10 14:18:33,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776710436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:18:33,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:18:33,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 14:18:33,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351409549] [2022-01-10 14:18:33,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:18:33,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 14:18:33,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:18:33,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 14:18:33,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 14:18:33,791 INFO L87 Difference]: Start difference. First operand 120 states and 167 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:33,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:18:33,883 INFO L93 Difference]: Finished difference Result 289 states and 396 transitions. [2022-01-10 14:18:33,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 14:18:33,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 33 [2022-01-10 14:18:33,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:18:33,884 INFO L225 Difference]: With dead ends: 289 [2022-01-10 14:18:33,885 INFO L226 Difference]: Without dead ends: 178 [2022-01-10 14:18:33,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 14:18:33,886 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 44 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:18:33,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 175 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:18:33,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-01-10 14:18:33,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 115. [2022-01-10 14:18:33,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.3859649122807018) internal successors, (158), 114 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:33,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 158 transitions. [2022-01-10 14:18:33,894 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 158 transitions. Word has length 33 [2022-01-10 14:18:33,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:18:33,894 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 158 transitions. [2022-01-10 14:18:33,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:33,894 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 158 transitions. [2022-01-10 14:18:33,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 14:18:33,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:18:33,896 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:18:33,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 14:18:33,896 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:18:33,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:18:33,897 INFO L85 PathProgramCache]: Analyzing trace with hash -695856664, now seen corresponding path program 1 times [2022-01-10 14:18:33,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:18:33,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936624367] [2022-01-10 14:18:33,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:18:33,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:18:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:18:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 14:18:33,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:18:33,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936624367] [2022-01-10 14:18:33,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936624367] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:18:33,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:18:33,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:18:33,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554594202] [2022-01-10 14:18:33,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:18:33,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:18:33,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:18:33,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:18:33,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:18:33,956 INFO L87 Difference]: Start difference. First operand 115 states and 158 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:33,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:18:33,986 INFO L93 Difference]: Finished difference Result 120 states and 162 transitions. [2022-01-10 14:18:33,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 14:18:33,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 34 [2022-01-10 14:18:33,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:18:33,987 INFO L225 Difference]: With dead ends: 120 [2022-01-10 14:18:33,987 INFO L226 Difference]: Without dead ends: 107 [2022-01-10 14:18:33,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:18:33,988 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 3 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 14:18:33,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 335 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 14:18:33,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-01-10 14:18:33,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-01-10 14:18:33,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.3679245283018868) internal successors, (145), 106 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:33,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 145 transitions. [2022-01-10 14:18:33,995 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 145 transitions. Word has length 34 [2022-01-10 14:18:33,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:18:33,995 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 145 transitions. [2022-01-10 14:18:33,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:33,995 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 145 transitions. [2022-01-10 14:18:33,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 14:18:33,996 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:18:33,996 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:18:33,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 14:18:33,997 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:18:33,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:18:33,997 INFO L85 PathProgramCache]: Analyzing trace with hash -205405774, now seen corresponding path program 1 times [2022-01-10 14:18:33,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:18:33,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801159985] [2022-01-10 14:18:33,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:18:33,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:18:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:18:34,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 14:18:34,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:18:34,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801159985] [2022-01-10 14:18:34,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801159985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 14:18:34,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 14:18:34,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 14:18:34,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948337618] [2022-01-10 14:18:34,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 14:18:34,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 14:18:34,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:18:34,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 14:18:34,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 14:18:34,056 INFO L87 Difference]: Start difference. First operand 107 states and 145 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:34,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:18:34,138 INFO L93 Difference]: Finished difference Result 174 states and 225 transitions. [2022-01-10 14:18:34,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 14:18:34,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-01-10 14:18:34,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:18:34,140 INFO L225 Difference]: With dead ends: 174 [2022-01-10 14:18:34,140 INFO L226 Difference]: Without dead ends: 131 [2022-01-10 14:18:34,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:18:34,141 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 55 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 14:18:34,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 312 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 14:18:34,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-01-10 14:18:34,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 105. [2022-01-10 14:18:34,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.3557692307692308) internal successors, (141), 104 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:34,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 141 transitions. [2022-01-10 14:18:34,147 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 141 transitions. Word has length 35 [2022-01-10 14:18:34,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:18:34,147 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 141 transitions. [2022-01-10 14:18:34,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:34,148 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 141 transitions. [2022-01-10 14:18:34,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-10 14:18:34,148 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:18:34,148 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:18:34,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 14:18:34,149 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:18:34,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:18:34,149 INFO L85 PathProgramCache]: Analyzing trace with hash -43911494, now seen corresponding path program 1 times [2022-01-10 14:18:34,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:18:34,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827977980] [2022-01-10 14:18:34,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:18:34,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:18:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:18:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:18:34,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:18:34,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827977980] [2022-01-10 14:18:34,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827977980] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:18:34,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852270622] [2022-01-10 14:18:34,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:18:34,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:18:34,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:18:34,212 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 14:18:34,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 14:18:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:18:34,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 14:18:34,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:18:34,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:18:34,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:18:34,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:18:34,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852270622] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:18:34,896 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:18:34,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 14:18:34,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365682797] [2022-01-10 14:18:34,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:18:34,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 14:18:34,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:18:34,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 14:18:34,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 14:18:34,899 INFO L87 Difference]: Start difference. First operand 105 states and 141 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 14:18:35,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:18:35,267 INFO L93 Difference]: Finished difference Result 283 states and 378 transitions. [2022-01-10 14:18:35,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 14:18:35,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 36 [2022-01-10 14:18:35,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:18:35,268 INFO L225 Difference]: With dead ends: 283 [2022-01-10 14:18:35,268 INFO L226 Difference]: Without dead ends: 188 [2022-01-10 14:18:35,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2022-01-10 14:18:35,269 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 112 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 14:18:35,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 397 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 14:18:35,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-01-10 14:18:35,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 122. [2022-01-10 14:18:35,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.3471074380165289) internal successors, (163), 121 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:35,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 163 transitions. [2022-01-10 14:18:35,278 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 163 transitions. Word has length 36 [2022-01-10 14:18:35,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:18:35,278 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 163 transitions. [2022-01-10 14:18:35,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 14:18:35,278 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 163 transitions. [2022-01-10 14:18:35,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-10 14:18:35,279 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:18:35,279 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:18:35,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 14:18:35,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-10 14:18:35,485 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:18:35,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:18:35,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1931721426, now seen corresponding path program 1 times [2022-01-10 14:18:35,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:18:35,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838804791] [2022-01-10 14:18:35,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:18:35,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:18:35,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:18:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:18:35,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:18:35,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838804791] [2022-01-10 14:18:35,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838804791] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:18:35,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885024065] [2022-01-10 14:18:35,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:18:35,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:18:35,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:18:35,541 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 14:18:35,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 14:18:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:18:35,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 14:18:35,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:18:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:18:35,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:18:35,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:18:35,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885024065] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:18:35,995 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:18:35,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 11 [2022-01-10 14:18:35,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142841031] [2022-01-10 14:18:35,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:18:35,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 14:18:35,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:18:35,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 14:18:35,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-10 14:18:35,996 INFO L87 Difference]: Start difference. First operand 122 states and 163 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:36,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:18:36,711 INFO L93 Difference]: Finished difference Result 377 states and 493 transitions. [2022-01-10 14:18:36,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 14:18:36,712 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-01-10 14:18:36,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:18:36,714 INFO L225 Difference]: With dead ends: 377 [2022-01-10 14:18:36,714 INFO L226 Difference]: Without dead ends: 273 [2022-01-10 14:18:36,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2022-01-10 14:18:36,715 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 238 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 14:18:36,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 597 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 14:18:36,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-01-10 14:18:36,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 127. [2022-01-10 14:18:36,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.3015873015873016) internal successors, (164), 126 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:36,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 164 transitions. [2022-01-10 14:18:36,727 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 164 transitions. Word has length 38 [2022-01-10 14:18:36,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:18:36,727 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 164 transitions. [2022-01-10 14:18:36,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:18:36,727 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 164 transitions. [2022-01-10 14:18:36,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 14:18:36,728 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:18:36,728 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:18:36,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 14:18:36,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-10 14:18:36,934 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:18:36,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:18:36,934 INFO L85 PathProgramCache]: Analyzing trace with hash 89679458, now seen corresponding path program 2 times [2022-01-10 14:18:36,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:18:36,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899206812] [2022-01-10 14:18:36,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:18:36,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:18:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:18:37,099 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:18:37,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:18:37,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899206812] [2022-01-10 14:18:37,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899206812] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:18:37,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919749932] [2022-01-10 14:18:37,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 14:18:37,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:18:37,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:18:37,101 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 14:18:37,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 14:18:37,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 14:18:37,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 14:18:37,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-10 14:18:37,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:18:38,258 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:18:38,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:18:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:18:39,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919749932] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:18:39,123 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:18:39,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-01-10 14:18:39,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31803437] [2022-01-10 14:18:39,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:18:39,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 14:18:39,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:18:39,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 14:18:39,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-01-10 14:18:39,125 INFO L87 Difference]: Start difference. First operand 127 states and 164 transitions. Second operand has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 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 14:18:52,335 WARN L228 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 59 DAG size of output: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 14:19:00,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 14:19:00,262 INFO L93 Difference]: Finished difference Result 337 states and 441 transitions. [2022-01-10 14:19:00,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 14:19:00,263 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 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 45 [2022-01-10 14:19:00,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 14:19:00,264 INFO L225 Difference]: With dead ends: 337 [2022-01-10 14:19:00,264 INFO L226 Difference]: Without dead ends: 230 [2022-01-10 14:19:00,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=185, Invalid=319, Unknown=2, NotChecked=0, Total=506 [2022-01-10 14:19:00,265 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 378 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 14:19:00,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 813 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 142 Invalid, 0 Unknown, 47 Unchecked, 2.8s Time] [2022-01-10 14:19:00,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-01-10 14:19:00,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 155. [2022-01-10 14:19:00,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.2922077922077921) internal successors, (199), 154 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:19:00,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 199 transitions. [2022-01-10 14:19:00,280 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 199 transitions. Word has length 45 [2022-01-10 14:19:00,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 14:19:00,280 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 199 transitions. [2022-01-10 14:19:00,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 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 14:19:00,281 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 199 transitions. [2022-01-10 14:19:00,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 14:19:00,281 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 14:19:00,281 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 14:19:00,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-10 14:19:00,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:19:00,487 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 14:19:00,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 14:19:00,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1405368530, now seen corresponding path program 2 times [2022-01-10 14:19:00,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 14:19:00,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832268796] [2022-01-10 14:19:00,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 14:19:00,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 14:19:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 14:19:00,643 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:19:00,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 14:19:00,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832268796] [2022-01-10 14:19:00,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832268796] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 14:19:00,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791621581] [2022-01-10 14:19:00,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 14:19:00,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 14:19:00,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 14:19:00,645 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 14:19:00,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 14:19:00,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 14:19:00,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 14:19:00,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-10 14:19:00,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 14:19:01,131 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:19:01,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 14:19:09,505 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 14:19:09,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791621581] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 14:19:09,506 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 14:19:09,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 24 [2022-01-10 14:19:09,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792663644] [2022-01-10 14:19:09,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 14:19:09,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-10 14:19:09,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 14:19:09,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-10 14:19:09,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=385, Unknown=2, NotChecked=0, Total=552 [2022-01-10 14:19:09,508 INFO L87 Difference]: Start difference. First operand 155 states and 199 transitions. Second operand has 24 states, 24 states have (on average 3.6666666666666665) internal successors, (88), 24 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 14:19:28,246 WARN L228 SmtUtils]: Spent 18.63s on a formula simplification. DAG size of input: 35 DAG size of output: 34 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 14:19:45,003 WARN L228 SmtUtils]: Spent 16.59s on a formula simplification. DAG size of input: 38 DAG size of output: 37 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)