/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:11:22,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:11:22,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:11:22,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:11:22,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:11:22,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:11:22,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:11:22,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:11:22,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:11:22,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:11:22,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:11:22,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:11:22,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:11:22,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:11:22,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:11:22,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:11:22,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:11:22,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:11:22,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:11:22,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:11:22,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:11:22,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:11:22,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:11:22,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:11:22,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 13:11:22,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 13:11:22,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 13:11:22,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 13:11:22,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 13:11:22,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 13:11:22,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 13:11:22,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 13:11:22,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 13:11:22,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 13:11:22,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 13:11:22,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 13:11:22,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 13:11:22,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 13:11:22,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:11:22,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:11:22,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:11:22,575 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 13:11:22,603 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:11:22,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:11:22,612 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:11:22,612 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:11:22,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:11:22,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:11:22,613 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:11:22,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:11:22,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:11:22,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:11:22,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:11:22,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:11:22,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:11:22,615 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:11:22,615 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:11:22,615 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:11:22,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:11:22,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:11:22,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:11:22,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:11:22,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:11:22,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:11:22,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:11:22,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:11:22,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:11:22,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:11:22,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:11:22,618 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:11:22,618 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:11:22,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:11:22,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:11:22,618 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:11:22,619 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:11:22,619 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:11:22,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:11:22,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:11:22,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:11:22,884 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:11:22,885 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:11:22,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2022-01-10 13:11:22,946 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0b857351/38fd65337e554352aa03a28c2a4549b7/FLAG3d2455ca8 [2022-01-10 13:11:23,316 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:11:23,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2022-01-10 13:11:23,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0b857351/38fd65337e554352aa03a28c2a4549b7/FLAG3d2455ca8 [2022-01-10 13:11:23,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0b857351/38fd65337e554352aa03a28c2a4549b7 [2022-01-10 13:11:23,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:11:23,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:11:23,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:11:23,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:11:23,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:11:23,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:11:23" (1/1) ... [2022-01-10 13:11:23,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5901e453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:23, skipping insertion in model container [2022-01-10 13:11:23,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:11:23" (1/1) ... [2022-01-10 13:11:23,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:11:23,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:11:24,002 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[10276,10289] [2022-01-10 13:11:24,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:11:24,105 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:11:24,174 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[10276,10289] [2022-01-10 13:11:24,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:11:24,223 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:11:24,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:24 WrapperNode [2022-01-10 13:11:24,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:11:24,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:11:24,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:11:24,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:11:24,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:24" (1/1) ... [2022-01-10 13:11:24,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:24" (1/1) ... [2022-01-10 13:11:24,316 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 811 [2022-01-10 13:11:24,316 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:11:24,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:11:24,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:11:24,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:11:24,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:24" (1/1) ... [2022-01-10 13:11:24,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:24" (1/1) ... [2022-01-10 13:11:24,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:24" (1/1) ... [2022-01-10 13:11:24,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:24" (1/1) ... [2022-01-10 13:11:24,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:24" (1/1) ... [2022-01-10 13:11:24,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:24" (1/1) ... [2022-01-10 13:11:24,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:24" (1/1) ... [2022-01-10 13:11:24,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:11:24,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:11:24,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:11:24,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:11:24,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:24" (1/1) ... [2022-01-10 13:11:24,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:11:24,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:11:24,417 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 13:11:24,443 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 13:11:24,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:11:24,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:11:24,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:11:24,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:11:24,604 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:11:24,614 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:11:25,154 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:11:25,162 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:11:25,162 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 13:11:25,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:11:25 BoogieIcfgContainer [2022-01-10 13:11:25,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:11:25,165 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:11:25,165 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:11:25,166 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:11:25,169 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:11:25" (1/1) ... [2022-01-10 13:11:25,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:11:25 BasicIcfg [2022-01-10 13:11:25,815 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:11:25,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:11:25,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:11:25,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:11:25,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:11:23" (1/4) ... [2022-01-10 13:11:25,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419f2949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:11:25, skipping insertion in model container [2022-01-10 13:11:25,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:11:24" (2/4) ... [2022-01-10 13:11:25,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419f2949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:11:25, skipping insertion in model container [2022-01-10 13:11:25,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:11:25" (3/4) ... [2022-01-10 13:11:25,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419f2949 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:11:25, skipping insertion in model container [2022-01-10 13:11:25,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:11:25" (4/4) ... [2022-01-10 13:11:25,824 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.p+lhb-reducer.cTransformedIcfg [2022-01-10 13:11:25,828 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:11:25,829 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 13:11:25,879 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:11:25,887 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 13:11:25,887 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 13:11:25,906 INFO L276 IsEmpty]: Start isEmpty. Operand has 215 states, 213 states have (on average 1.676056338028169) internal successors, (357), 214 states have internal predecessors, (357), 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 13:11:25,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 13:11:25,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:25,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:11:25,921 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:25,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:25,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1197643430, now seen corresponding path program 1 times [2022-01-10 13:11:25,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:25,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696826351] [2022-01-10 13:11:25,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:25,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:26,480 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 13:11:26,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:26,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696826351] [2022-01-10 13:11:26,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696826351] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:26,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:26,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:11:26,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447256575] [2022-01-10 13:11:26,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:26,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:11:26,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:26,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:11:26,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:11:26,529 INFO L87 Difference]: Start difference. First operand has 215 states, 213 states have (on average 1.676056338028169) internal successors, (357), 214 states have internal predecessors, (357), 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 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:11:26,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:26,659 INFO L93 Difference]: Finished difference Result 547 states and 891 transitions. [2022-01-10 13:11:26,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:11:26,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 13:11:26,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:26,672 INFO L225 Difference]: With dead ends: 547 [2022-01-10 13:11:26,672 INFO L226 Difference]: Without dead ends: 367 [2022-01-10 13:11:26,675 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 13:11:26,678 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 294 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:26,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 716 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:11:26,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-01-10 13:11:26,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2022-01-10 13:11:26,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.6181318681318682) internal successors, (589), 364 states have internal predecessors, (589), 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 13:11:26,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 589 transitions. [2022-01-10 13:11:26,741 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 589 transitions. Word has length 79 [2022-01-10 13:11:26,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:26,741 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 589 transitions. [2022-01-10 13:11:26,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:11:26,742 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 589 transitions. [2022-01-10 13:11:26,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 13:11:26,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:26,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:11:26,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:11:26,746 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:26,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:26,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1121151334, now seen corresponding path program 1 times [2022-01-10 13:11:26,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:26,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061149187] [2022-01-10 13:11:26,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:26,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:26,966 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 13:11:26,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:26,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061149187] [2022-01-10 13:11:26,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061149187] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:26,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:26,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:11:26,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881740046] [2022-01-10 13:11:26,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:26,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:11:26,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:26,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:11:26,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:11:26,973 INFO L87 Difference]: Start difference. First operand 365 states and 589 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 13:11:27,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:27,044 INFO L93 Difference]: Finished difference Result 899 states and 1436 transitions. [2022-01-10 13:11:27,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:11:27,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2022-01-10 13:11:27,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:27,051 INFO L225 Difference]: With dead ends: 899 [2022-01-10 13:11:27,051 INFO L226 Difference]: Without dead ends: 639 [2022-01-10 13:11:27,059 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 13:11:27,060 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 269 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:27,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 710 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:11:27,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-01-10 13:11:27,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 637. [2022-01-10 13:11:27,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 1.5959119496855345) internal successors, (1015), 636 states have internal predecessors, (1015), 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 13:11:27,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1015 transitions. [2022-01-10 13:11:27,118 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1015 transitions. Word has length 80 [2022-01-10 13:11:27,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:27,118 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 1015 transitions. [2022-01-10 13:11:27,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 13:11:27,119 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1015 transitions. [2022-01-10 13:11:27,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 13:11:27,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:27,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:11:27,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:11:27,133 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:27,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:27,138 INFO L85 PathProgramCache]: Analyzing trace with hash -848773304, now seen corresponding path program 1 times [2022-01-10 13:11:27,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:27,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573989796] [2022-01-10 13:11:27,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:27,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:27,360 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 13:11:27,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:27,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573989796] [2022-01-10 13:11:27,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573989796] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:27,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:27,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:11:27,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335442107] [2022-01-10 13:11:27,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:27,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:11:27,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:27,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:11:27,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:11:27,363 INFO L87 Difference]: Start difference. First operand 637 states and 1015 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:11:27,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:27,412 INFO L93 Difference]: Finished difference Result 1527 states and 2422 transitions. [2022-01-10 13:11:27,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:11:27,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 13:11:27,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:27,420 INFO L225 Difference]: With dead ends: 1527 [2022-01-10 13:11:27,420 INFO L226 Difference]: Without dead ends: 1107 [2022-01-10 13:11:27,423 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 13:11:27,428 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 252 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:27,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 726 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:11:27,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-01-10 13:11:27,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1105. [2022-01-10 13:11:27,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 1.578804347826087) internal successors, (1743), 1104 states have internal predecessors, (1743), 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 13:11:27,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1743 transitions. [2022-01-10 13:11:27,464 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1743 transitions. Word has length 81 [2022-01-10 13:11:27,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:27,465 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 1743 transitions. [2022-01-10 13:11:27,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:11:27,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1743 transitions. [2022-01-10 13:11:27,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 13:11:27,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:27,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:11:27,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:11:27,469 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:27,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:27,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1697237124, now seen corresponding path program 1 times [2022-01-10 13:11:27,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:27,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123712172] [2022-01-10 13:11:27,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:27,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:27,618 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 13:11:27,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:27,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123712172] [2022-01-10 13:11:27,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123712172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:27,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:27,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:11:27,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655726434] [2022-01-10 13:11:27,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:27,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:11:27,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:27,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:11:27,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:11:27,620 INFO L87 Difference]: Start difference. First operand 1105 states and 1743 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:11:27,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:27,680 INFO L93 Difference]: Finished difference Result 2583 states and 4066 transitions. [2022-01-10 13:11:27,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:11:27,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 13:11:27,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:27,688 INFO L225 Difference]: With dead ends: 2583 [2022-01-10 13:11:27,689 INFO L226 Difference]: Without dead ends: 1889 [2022-01-10 13:11:27,690 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 13:11:27,696 INFO L933 BasicCegarLoop]: 453 mSDtfsCounter, 235 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:27,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 742 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:11:27,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2022-01-10 13:11:27,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1887. [2022-01-10 13:11:27,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1886 states have (on average 1.5625662778366913) internal successors, (2947), 1886 states have internal predecessors, (2947), 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 13:11:27,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2947 transitions. [2022-01-10 13:11:27,750 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2947 transitions. Word has length 82 [2022-01-10 13:11:27,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:27,752 INFO L470 AbstractCegarLoop]: Abstraction has 1887 states and 2947 transitions. [2022-01-10 13:11:27,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:11:27,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2947 transitions. [2022-01-10 13:11:27,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 13:11:27,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:27,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:11:27,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:11:27,759 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:27,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:27,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1024249366, now seen corresponding path program 1 times [2022-01-10 13:11:27,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:27,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727358376] [2022-01-10 13:11:27,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:27,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:27,940 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 13:11:27,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:27,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727358376] [2022-01-10 13:11:27,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727358376] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:27,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:27,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:11:27,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79547707] [2022-01-10 13:11:27,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:27,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:11:27,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:27,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:11:27,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:11:27,942 INFO L87 Difference]: Start difference. First operand 1887 states and 2947 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:11:28,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:28,037 INFO L93 Difference]: Finished difference Result 4289 states and 6686 transitions. [2022-01-10 13:11:28,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:11:28,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 13:11:28,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:28,051 INFO L225 Difference]: With dead ends: 4289 [2022-01-10 13:11:28,051 INFO L226 Difference]: Without dead ends: 3149 [2022-01-10 13:11:28,055 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 13:11:28,055 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 218 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:28,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 758 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:11:28,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3149 states. [2022-01-10 13:11:28,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3149 to 3147. [2022-01-10 13:11:28,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3147 states, 3146 states have (on average 1.5432294977749523) internal successors, (4855), 3146 states have internal predecessors, (4855), 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 13:11:28,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3147 states to 3147 states and 4855 transitions. [2022-01-10 13:11:28,170 INFO L78 Accepts]: Start accepts. Automaton has 3147 states and 4855 transitions. Word has length 83 [2022-01-10 13:11:28,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:28,172 INFO L470 AbstractCegarLoop]: Abstraction has 3147 states and 4855 transitions. [2022-01-10 13:11:28,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:11:28,175 INFO L276 IsEmpty]: Start isEmpty. Operand 3147 states and 4855 transitions. [2022-01-10 13:11:28,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 13:11:28,184 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:28,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:11:28,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:11:28,184 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:28,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:28,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1063234978, now seen corresponding path program 1 times [2022-01-10 13:11:28,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:28,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978257574] [2022-01-10 13:11:28,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:28,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:28,385 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 13:11:28,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:28,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978257574] [2022-01-10 13:11:28,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978257574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:28,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:28,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:11:28,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147613536] [2022-01-10 13:11:28,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:28,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:11:28,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:28,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:11:28,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:11:28,387 INFO L87 Difference]: Start difference. First operand 3147 states and 4855 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 13:11:28,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:28,537 INFO L93 Difference]: Finished difference Result 5003 states and 7743 transitions. [2022-01-10 13:11:28,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:11:28,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 84 [2022-01-10 13:11:28,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:28,545 INFO L225 Difference]: With dead ends: 5003 [2022-01-10 13:11:28,545 INFO L226 Difference]: Without dead ends: 1889 [2022-01-10 13:11:28,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:11:28,552 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 53 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:28,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 825 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:11:28,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2022-01-10 13:11:28,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1889. [2022-01-10 13:11:28,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 1.5471398305084745) internal successors, (2921), 1888 states have internal predecessors, (2921), 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 13:11:28,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2921 transitions. [2022-01-10 13:11:28,608 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2921 transitions. Word has length 84 [2022-01-10 13:11:28,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:28,608 INFO L470 AbstractCegarLoop]: Abstraction has 1889 states and 2921 transitions. [2022-01-10 13:11:28,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 13:11:28,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2921 transitions. [2022-01-10 13:11:28,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 13:11:28,612 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:28,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:11:28,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:11:28,612 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:28,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:28,613 INFO L85 PathProgramCache]: Analyzing trace with hash 22028217, now seen corresponding path program 1 times [2022-01-10 13:11:28,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:28,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991011884] [2022-01-10 13:11:28,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:28,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:28,956 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 13:11:28,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:28,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991011884] [2022-01-10 13:11:28,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991011884] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:28,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:28,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:11:28,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384893743] [2022-01-10 13:11:28,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:28,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:11:28,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:28,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:11:28,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:11:28,959 INFO L87 Difference]: Start difference. First operand 1889 states and 2921 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 13:11:29,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:29,040 INFO L93 Difference]: Finished difference Result 3707 states and 5756 transitions. [2022-01-10 13:11:29,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:11:29,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 119 [2022-01-10 13:11:29,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:29,049 INFO L225 Difference]: With dead ends: 3707 [2022-01-10 13:11:29,049 INFO L226 Difference]: Without dead ends: 1889 [2022-01-10 13:11:29,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:11:29,053 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 1 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:29,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 819 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:11:29,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2022-01-10 13:11:29,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1889. [2022-01-10 13:11:29,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1889 states, 1888 states have (on average 1.5455508474576272) internal successors, (2918), 1888 states have internal predecessors, (2918), 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 13:11:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1889 states to 1889 states and 2918 transitions. [2022-01-10 13:11:29,109 INFO L78 Accepts]: Start accepts. Automaton has 1889 states and 2918 transitions. Word has length 119 [2022-01-10 13:11:29,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:29,110 INFO L470 AbstractCegarLoop]: Abstraction has 1889 states and 2918 transitions. [2022-01-10 13:11:29,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 13:11:29,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1889 states and 2918 transitions. [2022-01-10 13:11:29,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 13:11:29,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:29,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:11:29,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:11:29,117 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:29,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:29,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1784765163, now seen corresponding path program 1 times [2022-01-10 13:11:29,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:29,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711914188] [2022-01-10 13:11:29,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:29,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:29,295 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 13:11:29,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:29,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711914188] [2022-01-10 13:11:29,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711914188] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:29,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:29,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:11:29,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38665433] [2022-01-10 13:11:29,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:29,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:11:29,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:29,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:11:29,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:11:29,297 INFO L87 Difference]: Start difference. First operand 1889 states and 2918 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 13:11:31,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:11:33,620 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:11:33,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:33,930 INFO L93 Difference]: Finished difference Result 4700 states and 7239 transitions. [2022-01-10 13:11:33,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:11:33,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 121 [2022-01-10 13:11:33,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:33,942 INFO L225 Difference]: With dead ends: 4700 [2022-01-10 13:11:33,943 INFO L226 Difference]: Without dead ends: 2882 [2022-01-10 13:11:33,945 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 13:11:33,946 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 167 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:33,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 670 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 15 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2022-01-10 13:11:33,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2022-01-10 13:11:34,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2880. [2022-01-10 13:11:34,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2880 states, 2879 states have (on average 1.4956582146578674) internal successors, (4306), 2879 states have internal predecessors, (4306), 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 13:11:34,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4306 transitions. [2022-01-10 13:11:34,107 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4306 transitions. Word has length 121 [2022-01-10 13:11:34,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:34,107 INFO L470 AbstractCegarLoop]: Abstraction has 2880 states and 4306 transitions. [2022-01-10 13:11:34,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 13:11:34,107 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4306 transitions. [2022-01-10 13:11:34,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 13:11:34,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:34,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:11:34,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:11:34,114 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:34,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:34,114 INFO L85 PathProgramCache]: Analyzing trace with hash 643810842, now seen corresponding path program 1 times [2022-01-10 13:11:34,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:34,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951131636] [2022-01-10 13:11:34,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:34,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:34,388 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 13:11:34,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:34,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951131636] [2022-01-10 13:11:34,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951131636] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:34,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:34,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:11:34,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6466551] [2022-01-10 13:11:34,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:34,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:11:34,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:34,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:11:34,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:11:34,390 INFO L87 Difference]: Start difference. First operand 2880 states and 4306 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 13:11:37,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:37,478 INFO L93 Difference]: Finished difference Result 7159 states and 10627 transitions. [2022-01-10 13:11:37,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:11:37,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 122 [2022-01-10 13:11:37,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:37,497 INFO L225 Difference]: With dead ends: 7159 [2022-01-10 13:11:37,497 INFO L226 Difference]: Without dead ends: 5125 [2022-01-10 13:11:37,500 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 13:11:37,500 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 158 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:37,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 565 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 13:11:37,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5125 states. [2022-01-10 13:11:38,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5125 to 5123. [2022-01-10 13:11:38,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5123 states, 5122 states have (on average 1.4714955095665756) internal successors, (7537), 5122 states have internal predecessors, (7537), 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 13:11:38,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5123 states to 5123 states and 7537 transitions. [2022-01-10 13:11:38,341 INFO L78 Accepts]: Start accepts. Automaton has 5123 states and 7537 transitions. Word has length 122 [2022-01-10 13:11:38,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:38,341 INFO L470 AbstractCegarLoop]: Abstraction has 5123 states and 7537 transitions. [2022-01-10 13:11:38,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 13:11:38,342 INFO L276 IsEmpty]: Start isEmpty. Operand 5123 states and 7537 transitions. [2022-01-10 13:11:38,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 13:11:38,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:38,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:38,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:11:38,353 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:38,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:38,353 INFO L85 PathProgramCache]: Analyzing trace with hash 204679678, now seen corresponding path program 1 times [2022-01-10 13:11:38,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:38,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150965362] [2022-01-10 13:11:38,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:38,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:38,651 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 13:11:38,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:38,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150965362] [2022-01-10 13:11:38,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150965362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:38,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:38,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:11:38,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203697021] [2022-01-10 13:11:38,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:38,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:11:38,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:38,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:11:38,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:11:38,653 INFO L87 Difference]: Start difference. First operand 5123 states and 7537 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 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 13:11:39,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:39,657 INFO L93 Difference]: Finished difference Result 8869 states and 13010 transitions. [2022-01-10 13:11:39,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:11:39,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 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) Word has length 124 [2022-01-10 13:11:39,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:39,683 INFO L225 Difference]: With dead ends: 8869 [2022-01-10 13:11:39,684 INFO L226 Difference]: Without dead ends: 5031 [2022-01-10 13:11:39,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:11:39,689 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 1 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:39,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 810 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:11:39,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5031 states. [2022-01-10 13:11:40,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5031 to 4560. [2022-01-10 13:11:40,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4560 states, 4559 states have (on average 1.45689844264093) internal successors, (6642), 4559 states have internal predecessors, (6642), 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 13:11:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 6642 transitions. [2022-01-10 13:11:40,423 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 6642 transitions. Word has length 124 [2022-01-10 13:11:40,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:40,423 INFO L470 AbstractCegarLoop]: Abstraction has 4560 states and 6642 transitions. [2022-01-10 13:11:40,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 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 13:11:40,423 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 6642 transitions. [2022-01-10 13:11:40,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 13:11:40,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:40,434 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:40,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 13:11:40,435 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:40,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:40,435 INFO L85 PathProgramCache]: Analyzing trace with hash 969193240, now seen corresponding path program 1 times [2022-01-10 13:11:40,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:40,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794838171] [2022-01-10 13:11:40,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:40,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:40,634 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 13:11:40,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:40,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794838171] [2022-01-10 13:11:40,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794838171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:40,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:40,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:11:40,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532420325] [2022-01-10 13:11:40,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:40,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:11:40,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:40,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:11:40,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:11:40,636 INFO L87 Difference]: Start difference. First operand 4560 states and 6642 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 13:11:42,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:42,739 INFO L93 Difference]: Finished difference Result 11551 states and 16872 transitions. [2022-01-10 13:11:42,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:11:42,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 127 [2022-01-10 13:11:42,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:42,757 INFO L225 Difference]: With dead ends: 11551 [2022-01-10 13:11:42,758 INFO L226 Difference]: Without dead ends: 7821 [2022-01-10 13:11:42,762 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 13:11:42,763 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 148 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:42,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 507 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 13:11:42,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7821 states. [2022-01-10 13:11:44,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7821 to 7596. [2022-01-10 13:11:44,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7596 states, 7595 states have (on average 1.4563528637261356) internal successors, (11061), 7595 states have internal predecessors, (11061), 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 13:11:44,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7596 states to 7596 states and 11061 transitions. [2022-01-10 13:11:44,342 INFO L78 Accepts]: Start accepts. Automaton has 7596 states and 11061 transitions. Word has length 127 [2022-01-10 13:11:44,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:44,343 INFO L470 AbstractCegarLoop]: Abstraction has 7596 states and 11061 transitions. [2022-01-10 13:11:44,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 13:11:44,343 INFO L276 IsEmpty]: Start isEmpty. Operand 7596 states and 11061 transitions. [2022-01-10 13:11:44,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 13:11:44,353 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:44,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:44,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 13:11:44,354 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:44,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:44,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1790268456, now seen corresponding path program 1 times [2022-01-10 13:11:44,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:44,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634808996] [2022-01-10 13:11:44,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:44,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:44,534 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 13:11:44,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:44,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634808996] [2022-01-10 13:11:44,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634808996] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:44,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:44,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:11:44,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677731291] [2022-01-10 13:11:44,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:44,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:11:44,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:44,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:11:44,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:11:44,536 INFO L87 Difference]: Start difference. First operand 7596 states and 11061 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 13:11:45,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:45,925 INFO L93 Difference]: Finished difference Result 14050 states and 20531 transitions. [2022-01-10 13:11:45,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:11:45,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 127 [2022-01-10 13:11:45,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:45,941 INFO L225 Difference]: With dead ends: 14050 [2022-01-10 13:11:45,941 INFO L226 Difference]: Without dead ends: 7246 [2022-01-10 13:11:45,949 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 13:11:45,950 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 146 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:45,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 494 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:11:45,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7246 states. [2022-01-10 13:11:47,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7246 to 7244. [2022-01-10 13:11:47,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7244 states, 7243 states have (on average 1.447880712411984) internal successors, (10487), 7243 states have internal predecessors, (10487), 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 13:11:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7244 states to 7244 states and 10487 transitions. [2022-01-10 13:11:47,318 INFO L78 Accepts]: Start accepts. Automaton has 7244 states and 10487 transitions. Word has length 127 [2022-01-10 13:11:47,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:47,319 INFO L470 AbstractCegarLoop]: Abstraction has 7244 states and 10487 transitions. [2022-01-10 13:11:47,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 13:11:47,320 INFO L276 IsEmpty]: Start isEmpty. Operand 7244 states and 10487 transitions. [2022-01-10 13:11:47,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 13:11:47,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:47,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:47,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 13:11:47,327 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:47,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:47,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1510034784, now seen corresponding path program 1 times [2022-01-10 13:11:47,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:47,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826824075] [2022-01-10 13:11:47,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:47,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:47,520 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 13:11:47,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:47,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826824075] [2022-01-10 13:11:47,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826824075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:47,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:47,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:11:47,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663005746] [2022-01-10 13:11:47,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:47,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:11:47,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:47,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:11:47,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:11:47,522 INFO L87 Difference]: Start difference. First operand 7244 states and 10487 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 13:11:48,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:48,252 INFO L93 Difference]: Finished difference Result 10470 states and 15173 transitions. [2022-01-10 13:11:48,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:11:48,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 127 [2022-01-10 13:11:48,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:48,259 INFO L225 Difference]: With dead ends: 10470 [2022-01-10 13:11:48,259 INFO L226 Difference]: Without dead ends: 3746 [2022-01-10 13:11:48,266 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 13:11:48,266 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 129 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:48,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 465 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:11:48,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3746 states. [2022-01-10 13:11:48,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3746 to 3744. [2022-01-10 13:11:48,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 3743 states have (on average 1.4338765695965803) internal successors, (5367), 3743 states have internal predecessors, (5367), 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 13:11:48,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 5367 transitions. [2022-01-10 13:11:48,927 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 5367 transitions. Word has length 127 [2022-01-10 13:11:48,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:48,927 INFO L470 AbstractCegarLoop]: Abstraction has 3744 states and 5367 transitions. [2022-01-10 13:11:48,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 13:11:48,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 5367 transitions. [2022-01-10 13:11:48,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 13:11:48,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:48,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:48,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 13:11:48,931 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:48,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:48,932 INFO L85 PathProgramCache]: Analyzing trace with hash 747286188, now seen corresponding path program 1 times [2022-01-10 13:11:48,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:48,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026799201] [2022-01-10 13:11:48,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:48,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:49,090 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 13:11:49,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:49,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026799201] [2022-01-10 13:11:49,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026799201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:49,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:49,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:11:49,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616820900] [2022-01-10 13:11:49,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:49,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:11:49,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:49,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:11:49,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:11:49,092 INFO L87 Difference]: Start difference. First operand 3744 states and 5367 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 13:11:49,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:49,520 INFO L93 Difference]: Finished difference Result 5350 states and 7677 transitions. [2022-01-10 13:11:49,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:11:49,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 127 [2022-01-10 13:11:49,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:49,523 INFO L225 Difference]: With dead ends: 5350 [2022-01-10 13:11:49,523 INFO L226 Difference]: Without dead ends: 1942 [2022-01-10 13:11:49,527 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 13:11:49,528 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 112 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:49,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 436 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:11:49,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2022-01-10 13:11:49,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1940. [2022-01-10 13:11:49,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1939 states have (on average 1.4187725631768953) internal successors, (2751), 1939 states have internal predecessors, (2751), 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 13:11:49,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 2751 transitions. [2022-01-10 13:11:49,879 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 2751 transitions. Word has length 127 [2022-01-10 13:11:49,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:49,880 INFO L470 AbstractCegarLoop]: Abstraction has 1940 states and 2751 transitions. [2022-01-10 13:11:49,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 13:11:49,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 2751 transitions. [2022-01-10 13:11:49,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 13:11:49,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:49,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:49,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 13:11:49,882 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:49,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:49,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1721763748, now seen corresponding path program 1 times [2022-01-10 13:11:49,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:49,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188415601] [2022-01-10 13:11:49,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:49,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:50,037 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 13:11:50,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:50,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188415601] [2022-01-10 13:11:50,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188415601] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:50,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:50,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:11:50,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411252968] [2022-01-10 13:11:50,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:50,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:11:50,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:50,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:11:50,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:11:50,039 INFO L87 Difference]: Start difference. First operand 1940 states and 2751 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 13:11:50,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:50,293 INFO L93 Difference]: Finished difference Result 2730 states and 3877 transitions. [2022-01-10 13:11:50,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:11:50,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 127 [2022-01-10 13:11:50,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:50,296 INFO L225 Difference]: With dead ends: 2730 [2022-01-10 13:11:50,296 INFO L226 Difference]: Without dead ends: 1010 [2022-01-10 13:11:50,299 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 13:11:50,300 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 95 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:50,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 407 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:11:50,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2022-01-10 13:11:50,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 1008. [2022-01-10 13:11:50,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 1007 states have (on average 1.4011916583912611) internal successors, (1411), 1007 states have internal predecessors, (1411), 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 13:11:50,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1411 transitions. [2022-01-10 13:11:50,478 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1411 transitions. Word has length 127 [2022-01-10 13:11:50,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:50,478 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1411 transitions. [2022-01-10 13:11:50,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 13:11:50,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1411 transitions. [2022-01-10 13:11:50,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 13:11:50,479 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:50,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:50,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 13:11:50,480 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:50,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:50,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1409100496, now seen corresponding path program 1 times [2022-01-10 13:11:50,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:50,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689241948] [2022-01-10 13:11:50,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:50,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:50,654 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 13:11:50,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:50,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689241948] [2022-01-10 13:11:50,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689241948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:50,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:50,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:11:50,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924574218] [2022-01-10 13:11:50,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:50,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:11:50,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:50,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:11:50,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:11:50,656 INFO L87 Difference]: Start difference. First operand 1008 states and 1411 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 13:11:50,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:50,803 INFO L93 Difference]: Finished difference Result 1349 states and 1887 transitions. [2022-01-10 13:11:50,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:11:50,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 127 [2022-01-10 13:11:50,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:50,804 INFO L225 Difference]: With dead ends: 1349 [2022-01-10 13:11:50,804 INFO L226 Difference]: Without dead ends: 491 [2022-01-10 13:11:50,805 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 13:11:50,805 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 78 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:50,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 379 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:11:50,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-01-10 13:11:50,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 479. [2022-01-10 13:11:50,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.3640167364016735) internal successors, (652), 478 states have internal predecessors, (652), 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 13:11:50,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 652 transitions. [2022-01-10 13:11:50,939 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 652 transitions. Word has length 127 [2022-01-10 13:11:50,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:50,939 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 652 transitions. [2022-01-10 13:11:50,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 13:11:50,940 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 652 transitions. [2022-01-10 13:11:50,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 13:11:50,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:50,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:50,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 13:11:50,941 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:50,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:50,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1768493296, now seen corresponding path program 1 times [2022-01-10 13:11:50,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:50,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017048023] [2022-01-10 13:11:50,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:50,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:51,172 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 13:11:51,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:51,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017048023] [2022-01-10 13:11:51,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017048023] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:51,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:51,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:11:51,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364082279] [2022-01-10 13:11:51,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:51,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:11:51,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:51,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:11:51,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:11:51,175 INFO L87 Difference]: Start difference. First operand 479 states and 652 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 13:11:51,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:51,666 INFO L93 Difference]: Finished difference Result 990 states and 1364 transitions. [2022-01-10 13:11:51,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:11:51,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 127 [2022-01-10 13:11:51,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:51,669 INFO L225 Difference]: With dead ends: 990 [2022-01-10 13:11:51,669 INFO L226 Difference]: Without dead ends: 587 [2022-01-10 13:11:51,669 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 13:11:51,670 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 82 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:51,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 579 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 13:11:51,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-01-10 13:11:51,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 584. [2022-01-10 13:11:51,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 1.3619210977701544) internal successors, (794), 583 states have internal predecessors, (794), 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 13:11:51,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 794 transitions. [2022-01-10 13:11:51,772 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 794 transitions. Word has length 127 [2022-01-10 13:11:51,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:51,772 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 794 transitions. [2022-01-10 13:11:51,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 13:11:51,772 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 794 transitions. [2022-01-10 13:11:51,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 13:11:51,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:51,773 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:51,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 13:11:51,773 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:51,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:51,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1218422144, now seen corresponding path program 1 times [2022-01-10 13:11:51,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:51,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402728424] [2022-01-10 13:11:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:51,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:11:52,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:52,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402728424] [2022-01-10 13:11:52,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402728424] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:52,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:52,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:11:52,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549272365] [2022-01-10 13:11:52,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:52,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:11:52,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:52,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:11:52,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:11:52,016 INFO L87 Difference]: Start difference. First operand 584 states and 794 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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 13:11:52,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:52,305 INFO L93 Difference]: Finished difference Result 792 states and 1079 transitions. [2022-01-10 13:11:52,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:11:52,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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 128 [2022-01-10 13:11:52,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:52,308 INFO L225 Difference]: With dead ends: 792 [2022-01-10 13:11:52,308 INFO L226 Difference]: Without dead ends: 790 [2022-01-10 13:11:52,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:11:52,310 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 223 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:52,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 784 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:11:52,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2022-01-10 13:11:52,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 590. [2022-01-10 13:11:52,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 589 states have (on average 1.3565365025466893) internal successors, (799), 589 states have internal predecessors, (799), 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 13:11:52,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 799 transitions. [2022-01-10 13:11:52,458 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 799 transitions. Word has length 128 [2022-01-10 13:11:52,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:52,459 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 799 transitions. [2022-01-10 13:11:52,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 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 13:11:52,459 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 799 transitions. [2022-01-10 13:11:52,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 13:11:52,460 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:52,460 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:52,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 13:11:52,460 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:52,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:52,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1218451935, now seen corresponding path program 1 times [2022-01-10 13:11:52,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:52,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615987804] [2022-01-10 13:11:52,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:52,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:52,699 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 13:11:52,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:52,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615987804] [2022-01-10 13:11:52,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615987804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:52,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:52,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:11:52,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599138192] [2022-01-10 13:11:52,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:52,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:11:52,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:52,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:11:52,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:11:52,701 INFO L87 Difference]: Start difference. First operand 590 states and 799 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 13:11:53,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:53,601 INFO L93 Difference]: Finished difference Result 1118 states and 1522 transitions. [2022-01-10 13:11:53,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:11:53,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 128 [2022-01-10 13:11:53,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:53,604 INFO L225 Difference]: With dead ends: 1118 [2022-01-10 13:11:53,604 INFO L226 Difference]: Without dead ends: 706 [2022-01-10 13:11:53,605 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 13:11:53,605 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 77 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:53,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 441 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 13:11:53,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-01-10 13:11:53,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 702. [2022-01-10 13:11:53,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 1.355206847360913) internal successors, (950), 701 states have internal predecessors, (950), 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 13:11:53,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 950 transitions. [2022-01-10 13:11:53,824 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 950 transitions. Word has length 128 [2022-01-10 13:11:53,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:53,824 INFO L470 AbstractCegarLoop]: Abstraction has 702 states and 950 transitions. [2022-01-10 13:11:53,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 13:11:53,824 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 950 transitions. [2022-01-10 13:11:53,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 13:11:53,825 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:53,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:53,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 13:11:53,825 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:53,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1041524255, now seen corresponding path program 1 times [2022-01-10 13:11:53,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:53,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280174864] [2022-01-10 13:11:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:53,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:54,015 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 13:11:54,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:54,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280174864] [2022-01-10 13:11:54,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280174864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:54,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:54,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:11:54,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287731340] [2022-01-10 13:11:54,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:54,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:11:54,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:54,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:11:54,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:11:54,017 INFO L87 Difference]: Start difference. First operand 702 states and 950 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 13:11:56,125 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:11:56,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:11:56,362 INFO L93 Difference]: Finished difference Result 1276 states and 1732 transitions. [2022-01-10 13:11:56,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:11:56,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 128 [2022-01-10 13:11:56,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:11:56,365 INFO L225 Difference]: With dead ends: 1276 [2022-01-10 13:11:56,365 INFO L226 Difference]: Without dead ends: 679 [2022-01-10 13:11:56,366 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 13:11:56,366 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 103 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:11:56,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 365 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 13:11:56,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-01-10 13:11:56,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 666. [2022-01-10 13:11:56,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 665 states have (on average 1.344360902255639) internal successors, (894), 665 states have internal predecessors, (894), 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 13:11:56,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 894 transitions. [2022-01-10 13:11:56,541 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 894 transitions. Word has length 128 [2022-01-10 13:11:56,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:11:56,541 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 894 transitions. [2022-01-10 13:11:56,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 13:11:56,542 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 894 transitions. [2022-01-10 13:11:56,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-10 13:11:56,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:11:56,543 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:11:56,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 13:11:56,543 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:11:56,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:11:56,543 INFO L85 PathProgramCache]: Analyzing trace with hash -2022060435, now seen corresponding path program 1 times [2022-01-10 13:11:56,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:11:56,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029162133] [2022-01-10 13:11:56,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:11:56,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:11:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:11:57,827 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:11:57,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:11:57,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029162133] [2022-01-10 13:11:57,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029162133] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:11:57,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:11:57,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-10 13:11:57,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741253800] [2022-01-10 13:11:57,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:11:57,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 13:11:57,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:11:57,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 13:11:57,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-10 13:11:57,829 INFO L87 Difference]: Start difference. First operand 666 states and 894 transitions. Second operand has 14 states, 14 states have (on average 11.071428571428571) internal successors, (155), 13 states have internal predecessors, (155), 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 13:12:03,033 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:12:05,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:12:07,341 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:12:09,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:12:20,619 WARN L228 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 84 DAG size of output: 81 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-10 13:12:24,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []