/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_SUM.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.03.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:05:00,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:05:00,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:05:00,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:05:00,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:05:00,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:05:00,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:05:00,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:05:00,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:05:00,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:05:00,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:05:00,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:05:00,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:05:00,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:05:00,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:05:00,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:05:00,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:05:00,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:05:00,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:05:00,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:05:00,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:05:00,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:05:00,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:05:00,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:05:00,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:05:00,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:05:00,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:05:00,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:05:00,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:05:00,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:05:00,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:05:00,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:05:00,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:05:00,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:05:00,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:05:00,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:05:00,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:05:00,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:05:00,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:05:00,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:05:00,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:05:00,900 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:05:00,921 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:05:00,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:05:00,922 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:05:00,922 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:05:00,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:05:00,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:05:00,923 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:05:00,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:05:00,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:05:00,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:05:00,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:05:00,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:05:00,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:05:00,924 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:05:00,924 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:05:00,924 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:05:00,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:05:00,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:05:00,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:05:00,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:05:00,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:05:00,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:05:00,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:05:00,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:05:00,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:05:00,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:05:00,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:05:00,926 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:05:00,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:05:00,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:05:00,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:05:00,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:05:00,927 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:05:00,927 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:05:01,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:05:01,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:05:01,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:05:01,126 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:05:01,127 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:05:01,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.03.cil-2.c [2022-01-11 06:05:01,176 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eac53266/14abaffaf0484201a3d5c9cea489a4dd/FLAGc9ab279ce [2022-01-11 06:05:01,564 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:05:01,564 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.03.cil-2.c [2022-01-11 06:05:01,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eac53266/14abaffaf0484201a3d5c9cea489a4dd/FLAGc9ab279ce [2022-01-11 06:05:01,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5eac53266/14abaffaf0484201a3d5c9cea489a4dd [2022-01-11 06:05:01,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:05:01,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:05:01,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:05:01,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:05:01,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:05:01,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:05:01" (1/1) ... [2022-01-11 06:05:01,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45ff5a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:01, skipping insertion in model container [2022-01-11 06:05:01,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:05:01" (1/1) ... [2022-01-11 06:05:01,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:05:01,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:05:01,757 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.03.cil-2.c[671,684] [2022-01-11 06:05:01,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:05:01,814 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:05:01,824 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.03.cil-2.c[671,684] [2022-01-11 06:05:01,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:05:01,852 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:05:01,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:01 WrapperNode [2022-01-11 06:05:01,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:05:01,854 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:05:01,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:05:01,854 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:05:01,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:01" (1/1) ... [2022-01-11 06:05:01,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:01" (1/1) ... [2022-01-11 06:05:01,937 INFO L137 Inliner]: procedures = 34, calls = 40, calls flagged for inlining = 35, calls inlined = 62, statements flattened = 813 [2022-01-11 06:05:01,938 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:05:01,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:05:01,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:05:01,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:05:01,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:01" (1/1) ... [2022-01-11 06:05:01,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:01" (1/1) ... [2022-01-11 06:05:01,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:01" (1/1) ... [2022-01-11 06:05:01,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:01" (1/1) ... [2022-01-11 06:05:01,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:01" (1/1) ... [2022-01-11 06:05:01,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:01" (1/1) ... [2022-01-11 06:05:01,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:01" (1/1) ... [2022-01-11 06:05:01,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:05:01,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:05:01,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:05:01,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:05:02,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:01" (1/1) ... [2022-01-11 06:05:02,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:05:02,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:05:02,030 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) [2022-01-11 06:05:02,039 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 [2022-01-11 06:05:02,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:05:02,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:05:02,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:05:02,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:05:02,112 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:05:02,113 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:05:02,618 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:05:02,630 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:05:02,631 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-11 06:05:02,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:05:02 BoogieIcfgContainer [2022-01-11 06:05:02,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:05:02,635 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:05:02,635 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:05:02,636 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:05:02,638 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:05:02" (1/1) ... [2022-01-11 06:05:02,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:05:02 BasicIcfg [2022-01-11 06:05:02,811 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:05:02,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:05:02,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:05:02,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:05:02,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:05:01" (1/4) ... [2022-01-11 06:05:02,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643f7e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:05:02, skipping insertion in model container [2022-01-11 06:05:02,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:05:01" (2/4) ... [2022-01-11 06:05:02,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643f7e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:05:02, skipping insertion in model container [2022-01-11 06:05:02,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:05:02" (3/4) ... [2022-01-11 06:05:02,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643f7e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:05:02, skipping insertion in model container [2022-01-11 06:05:02,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:05:02" (4/4) ... [2022-01-11 06:05:02,816 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.03.cil-2.cTransformedIcfg [2022-01-11 06:05:02,819 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:05:02,819 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:05:02,855 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:05:02,859 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 [2022-01-11 06:05:02,860 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:05:02,875 INFO L276 IsEmpty]: Start isEmpty. Operand has 325 states, 323 states have (on average 1.5386996904024768) internal successors, (497), 324 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:02,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 06:05:02,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:02,881 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] [2022-01-11 06:05:02,882 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:02,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:02,886 INFO L85 PathProgramCache]: Analyzing trace with hash 582478197, now seen corresponding path program 1 times [2022-01-11 06:05:02,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:02,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809309569] [2022-01-11 06:05:02,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:02,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:03,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:03,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:03,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809309569] [2022-01-11 06:05:03,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809309569] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:03,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:03,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:03,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2422250] [2022-01-11 06:05:03,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:03,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:03,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:03,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:03,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:03,135 INFO L87 Difference]: Start difference. First operand has 325 states, 323 states have (on average 1.5386996904024768) internal successors, (497), 324 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:03,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:03,236 INFO L93 Difference]: Finished difference Result 638 states and 976 transitions. [2022-01-11 06:05:03,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:03,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-11 06:05:03,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:03,251 INFO L225 Difference]: With dead ends: 638 [2022-01-11 06:05:03,251 INFO L226 Difference]: Without dead ends: 320 [2022-01-11 06:05:03,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:03,260 INFO L933 BasicCegarLoop]: 473 mSDtfsCounter, 468 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:03,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 473 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:03,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-01-11 06:05:03,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2022-01-11 06:05:03,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.4858934169278997) internal successors, (474), 319 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:03,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 474 transitions. [2022-01-11 06:05:03,326 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 474 transitions. Word has length 65 [2022-01-11 06:05:03,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:03,327 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 474 transitions. [2022-01-11 06:05:03,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:03,328 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 474 transitions. [2022-01-11 06:05:03,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 06:05:03,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:03,331 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] [2022-01-11 06:05:03,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:05:03,332 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:03,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:03,334 INFO L85 PathProgramCache]: Analyzing trace with hash -762185387, now seen corresponding path program 1 times [2022-01-11 06:05:03,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:03,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509321046] [2022-01-11 06:05:03,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:03,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:03,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:03,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509321046] [2022-01-11 06:05:03,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509321046] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:03,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:03,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:03,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173163276] [2022-01-11 06:05:03,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:03,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:03,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:03,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:03,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:03,417 INFO L87 Difference]: Start difference. First operand 320 states and 474 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:03,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:03,436 INFO L93 Difference]: Finished difference Result 628 states and 930 transitions. [2022-01-11 06:05:03,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:03,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-11 06:05:03,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:03,438 INFO L225 Difference]: With dead ends: 628 [2022-01-11 06:05:03,438 INFO L226 Difference]: Without dead ends: 320 [2022-01-11 06:05:03,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:03,440 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 458 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:03,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 464 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:03,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-01-11 06:05:03,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2022-01-11 06:05:03,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.4702194357366771) internal successors, (469), 319 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:03,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 469 transitions. [2022-01-11 06:05:03,457 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 469 transitions. Word has length 65 [2022-01-11 06:05:03,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:03,457 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 469 transitions. [2022-01-11 06:05:03,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:03,457 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 469 transitions. [2022-01-11 06:05:03,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 06:05:03,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:03,462 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] [2022-01-11 06:05:03,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:05:03,464 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:03,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:03,467 INFO L85 PathProgramCache]: Analyzing trace with hash -112824971, now seen corresponding path program 1 times [2022-01-11 06:05:03,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:03,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360246528] [2022-01-11 06:05:03,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:03,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:03,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:03,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:03,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360246528] [2022-01-11 06:05:03,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360246528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:03,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:03,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:03,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489705218] [2022-01-11 06:05:03,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:03,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:03,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:03,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:03,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:03,529 INFO L87 Difference]: Start difference. First operand 320 states and 469 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:03,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:03,548 INFO L93 Difference]: Finished difference Result 627 states and 919 transitions. [2022-01-11 06:05:03,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:03,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-11 06:05:03,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:03,550 INFO L225 Difference]: With dead ends: 627 [2022-01-11 06:05:03,550 INFO L226 Difference]: Without dead ends: 320 [2022-01-11 06:05:03,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:03,555 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 452 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:03,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 459 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:03,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-01-11 06:05:03,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2022-01-11 06:05:03,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.4545454545454546) internal successors, (464), 319 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:03,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 464 transitions. [2022-01-11 06:05:03,577 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 464 transitions. Word has length 65 [2022-01-11 06:05:03,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:03,577 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 464 transitions. [2022-01-11 06:05:03,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:03,578 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 464 transitions. [2022-01-11 06:05:03,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 06:05:03,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:03,580 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] [2022-01-11 06:05:03,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:05:03,581 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:03,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:03,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1847784789, now seen corresponding path program 1 times [2022-01-11 06:05:03,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:03,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092565693] [2022-01-11 06:05:03,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:03,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:03,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:03,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:03,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092565693] [2022-01-11 06:05:03,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092565693] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:03,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:03,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:03,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387189539] [2022-01-11 06:05:03,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:03,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:03,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:03,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:03,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:03,636 INFO L87 Difference]: Start difference. First operand 320 states and 464 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:03,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:03,674 INFO L93 Difference]: Finished difference Result 626 states and 908 transitions. [2022-01-11 06:05:03,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:03,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-11 06:05:03,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:03,675 INFO L225 Difference]: With dead ends: 626 [2022-01-11 06:05:03,676 INFO L226 Difference]: Without dead ends: 320 [2022-01-11 06:05:03,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:03,683 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 398 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:03,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 480 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:03,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-01-11 06:05:03,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2022-01-11 06:05:03,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.4200626959247649) internal successors, (453), 319 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:03,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 453 transitions. [2022-01-11 06:05:03,697 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 453 transitions. Word has length 65 [2022-01-11 06:05:03,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:03,698 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 453 transitions. [2022-01-11 06:05:03,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:03,699 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 453 transitions. [2022-01-11 06:05:03,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 06:05:03,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:03,699 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] [2022-01-11 06:05:03,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:05:03,699 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:03,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:03,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1376727796, now seen corresponding path program 1 times [2022-01-11 06:05:03,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:03,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582647447] [2022-01-11 06:05:03,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:03,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:03,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:03,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:03,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582647447] [2022-01-11 06:05:03,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582647447] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:03,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:03,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:03,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283883917] [2022-01-11 06:05:03,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:03,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:03,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:03,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:03,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:03,779 INFO L87 Difference]: Start difference. First operand 320 states and 453 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:03,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:03,832 INFO L93 Difference]: Finished difference Result 625 states and 885 transitions. [2022-01-11 06:05:03,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:03,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-11 06:05:03,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:03,834 INFO L225 Difference]: With dead ends: 625 [2022-01-11 06:05:03,834 INFO L226 Difference]: Without dead ends: 320 [2022-01-11 06:05:03,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:03,835 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 387 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:03,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 468 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:03,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-01-11 06:05:03,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2022-01-11 06:05:03,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.3855799373040751) internal successors, (442), 319 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:03,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 442 transitions. [2022-01-11 06:05:03,846 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 442 transitions. Word has length 65 [2022-01-11 06:05:03,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:03,846 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 442 transitions. [2022-01-11 06:05:03,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:03,847 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 442 transitions. [2022-01-11 06:05:03,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 06:05:03,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:03,859 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] [2022-01-11 06:05:03,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:05:03,860 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:03,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:03,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1794621549, now seen corresponding path program 1 times [2022-01-11 06:05:03,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:03,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310363462] [2022-01-11 06:05:03,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:03,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:03,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:03,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:03,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310363462] [2022-01-11 06:05:03,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310363462] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:03,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:03,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:03,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729941735] [2022-01-11 06:05:03,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:03,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:03,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:03,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:03,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:03,912 INFO L87 Difference]: Start difference. First operand 320 states and 442 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:03,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:03,951 INFO L93 Difference]: Finished difference Result 624 states and 862 transitions. [2022-01-11 06:05:03,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:03,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-11 06:05:03,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:03,954 INFO L225 Difference]: With dead ends: 624 [2022-01-11 06:05:03,954 INFO L226 Difference]: Without dead ends: 320 [2022-01-11 06:05:03,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:03,956 INFO L933 BasicCegarLoop]: 420 mSDtfsCounter, 376 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:03,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 456 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:03,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-01-11 06:05:03,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2022-01-11 06:05:03,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.3510971786833856) internal successors, (431), 319 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:03,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 431 transitions. [2022-01-11 06:05:03,968 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 431 transitions. Word has length 65 [2022-01-11 06:05:03,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:03,969 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 431 transitions. [2022-01-11 06:05:03,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:03,969 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 431 transitions. [2022-01-11 06:05:03,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 06:05:03,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:03,969 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] [2022-01-11 06:05:03,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:05:03,970 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:03,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:03,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1200354382, now seen corresponding path program 1 times [2022-01-11 06:05:03,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:03,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472041161] [2022-01-11 06:05:03,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:03,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:04,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:04,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:04,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472041161] [2022-01-11 06:05:04,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472041161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:04,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:04,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:04,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607275986] [2022-01-11 06:05:04,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:04,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:04,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:04,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:04,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:04,007 INFO L87 Difference]: Start difference. First operand 320 states and 431 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:04,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:04,042 INFO L93 Difference]: Finished difference Result 623 states and 839 transitions. [2022-01-11 06:05:04,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:04,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-11 06:05:04,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:04,044 INFO L225 Difference]: With dead ends: 623 [2022-01-11 06:05:04,044 INFO L226 Difference]: Without dead ends: 320 [2022-01-11 06:05:04,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:04,045 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 365 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:04,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 444 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:04,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-01-11 06:05:04,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2022-01-11 06:05:04,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.316614420062696) internal successors, (420), 319 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:04,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 420 transitions. [2022-01-11 06:05:04,057 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 420 transitions. Word has length 65 [2022-01-11 06:05:04,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:04,057 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 420 transitions. [2022-01-11 06:05:04,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:04,057 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 420 transitions. [2022-01-11 06:05:04,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 06:05:04,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:04,061 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] [2022-01-11 06:05:04,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:05:04,061 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:04,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:04,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1535019311, now seen corresponding path program 1 times [2022-01-11 06:05:04,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:04,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214899772] [2022-01-11 06:05:04,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:04,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:04,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:04,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:04,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214899772] [2022-01-11 06:05:04,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214899772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:04,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:04,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:05:04,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937658770] [2022-01-11 06:05:04,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:04,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:05:04,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:04,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:05:04,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:05:04,127 INFO L87 Difference]: Start difference. First operand 320 states and 420 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:04,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:04,220 INFO L93 Difference]: Finished difference Result 787 states and 1042 transitions. [2022-01-11 06:05:04,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:05:04,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-11 06:05:04,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:04,223 INFO L225 Difference]: With dead ends: 787 [2022-01-11 06:05:04,223 INFO L226 Difference]: Without dead ends: 498 [2022-01-11 06:05:04,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:05:04,224 INFO L933 BasicCegarLoop]: 438 mSDtfsCounter, 1031 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:04,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 1228 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:04,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2022-01-11 06:05:04,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 323. [2022-01-11 06:05:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.295031055900621) internal successors, (417), 322 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:04,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 417 transitions. [2022-01-11 06:05:04,244 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 417 transitions. Word has length 65 [2022-01-11 06:05:04,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:04,245 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 417 transitions. [2022-01-11 06:05:04,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:04,245 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 417 transitions. [2022-01-11 06:05:04,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 06:05:04,245 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:04,245 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] [2022-01-11 06:05:04,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:05:04,246 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:04,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:04,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1205253550, now seen corresponding path program 1 times [2022-01-11 06:05:04,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:04,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174181564] [2022-01-11 06:05:04,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:04,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:04,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:04,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:04,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174181564] [2022-01-11 06:05:04,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174181564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:04,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:04,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:04,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432685013] [2022-01-11 06:05:04,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:04,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:04,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:04,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:04,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:04,294 INFO L87 Difference]: Start difference. First operand 323 states and 417 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:04,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:04,341 INFO L93 Difference]: Finished difference Result 874 states and 1130 transitions. [2022-01-11 06:05:04,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:04,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-11 06:05:04,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:04,344 INFO L225 Difference]: With dead ends: 874 [2022-01-11 06:05:04,344 INFO L226 Difference]: Without dead ends: 561 [2022-01-11 06:05:04,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:04,346 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 329 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:04,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 747 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:04,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-01-11 06:05:04,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 559. [2022-01-11 06:05:04,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 558 states have (on average 1.2956989247311828) internal successors, (723), 558 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:04,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 723 transitions. [2022-01-11 06:05:04,375 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 723 transitions. Word has length 65 [2022-01-11 06:05:04,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:04,375 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 723 transitions. [2022-01-11 06:05:04,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:04,375 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 723 transitions. [2022-01-11 06:05:04,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-11 06:05:04,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:04,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:04,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:05:04,376 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:04,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:04,377 INFO L85 PathProgramCache]: Analyzing trace with hash 39510931, now seen corresponding path program 1 times [2022-01-11 06:05:04,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:04,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788946088] [2022-01-11 06:05:04,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:04,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:04,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:04,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:04,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788946088] [2022-01-11 06:05:04,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788946088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:04,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:04,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:04,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415985551] [2022-01-11 06:05:04,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:04,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:04,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:04,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:04,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:04,422 INFO L87 Difference]: Start difference. First operand 559 states and 723 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:04,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:04,493 INFO L93 Difference]: Finished difference Result 1583 states and 2054 transitions. [2022-01-11 06:05:04,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:04,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-11 06:05:04,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:04,496 INFO L225 Difference]: With dead ends: 1583 [2022-01-11 06:05:04,496 INFO L226 Difference]: Without dead ends: 1043 [2022-01-11 06:05:04,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:04,497 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 328 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:04,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 731 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:04,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-01-11 06:05:04,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 983. [2022-01-11 06:05:04,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 982 states have (on average 1.2881873727087576) internal successors, (1265), 982 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:04,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1265 transitions. [2022-01-11 06:05:04,549 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1265 transitions. Word has length 65 [2022-01-11 06:05:04,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:04,549 INFO L470 AbstractCegarLoop]: Abstraction has 983 states and 1265 transitions. [2022-01-11 06:05:04,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:04,550 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1265 transitions. [2022-01-11 06:05:04,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-11 06:05:04,550 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:04,550 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] [2022-01-11 06:05:04,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:05:04,551 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:04,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:04,551 INFO L85 PathProgramCache]: Analyzing trace with hash -3206250, now seen corresponding path program 1 times [2022-01-11 06:05:04,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:04,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664722816] [2022-01-11 06:05:04,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:04,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:04,621 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:04,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:04,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664722816] [2022-01-11 06:05:04,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664722816] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:04,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:04,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:04,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185886624] [2022-01-11 06:05:04,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:04,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:04,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:04,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:04,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:04,623 INFO L87 Difference]: Start difference. First operand 983 states and 1265 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:04,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:04,756 INFO L93 Difference]: Finished difference Result 2805 states and 3621 transitions. [2022-01-11 06:05:04,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:04,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-01-11 06:05:04,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:04,762 INFO L225 Difference]: With dead ends: 2805 [2022-01-11 06:05:04,762 INFO L226 Difference]: Without dead ends: 1847 [2022-01-11 06:05:04,764 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 [2022-01-11 06:05:04,764 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 333 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:04,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 728 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:04,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2022-01-11 06:05:04,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1757. [2022-01-11 06:05:04,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1757 states, 1756 states have (on average 1.2853075170842825) internal successors, (2257), 1756 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:04,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1757 states to 1757 states and 2257 transitions. [2022-01-11 06:05:04,898 INFO L78 Accepts]: Start accepts. Automaton has 1757 states and 2257 transitions. Word has length 105 [2022-01-11 06:05:04,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:04,899 INFO L470 AbstractCegarLoop]: Abstraction has 1757 states and 2257 transitions. [2022-01-11 06:05:04,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:04,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 2257 transitions. [2022-01-11 06:05:04,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-11 06:05:04,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:04,900 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] [2022-01-11 06:05:04,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:05:04,900 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:04,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:04,901 INFO L85 PathProgramCache]: Analyzing trace with hash -170908714, now seen corresponding path program 1 times [2022-01-11 06:05:04,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:04,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953907862] [2022-01-11 06:05:04,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:04,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:04,954 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:04,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:04,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953907862] [2022-01-11 06:05:04,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953907862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:04,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:04,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:04,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290327679] [2022-01-11 06:05:04,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:04,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:04,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:04,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:04,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:04,956 INFO L87 Difference]: Start difference. First operand 1757 states and 2257 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:05,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:05,151 INFO L93 Difference]: Finished difference Result 5010 states and 6401 transitions. [2022-01-11 06:05:05,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:05,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-01-11 06:05:05,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:05,162 INFO L225 Difference]: With dead ends: 5010 [2022-01-11 06:05:05,162 INFO L226 Difference]: Without dead ends: 3306 [2022-01-11 06:05:05,187 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 [2022-01-11 06:05:05,188 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 258 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 910 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 [2022-01-11 06:05:05,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 910 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:05,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3306 states. [2022-01-11 06:05:05,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3306 to 3304. [2022-01-11 06:05:05,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3304 states, 3303 states have (on average 1.2633969118982742) internal successors, (4173), 3303 states have internal predecessors, (4173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:05,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3304 states to 3304 states and 4173 transitions. [2022-01-11 06:05:05,394 INFO L78 Accepts]: Start accepts. Automaton has 3304 states and 4173 transitions. Word has length 105 [2022-01-11 06:05:05,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:05,395 INFO L470 AbstractCegarLoop]: Abstraction has 3304 states and 4173 transitions. [2022-01-11 06:05:05,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:05,395 INFO L276 IsEmpty]: Start isEmpty. Operand 3304 states and 4173 transitions. [2022-01-11 06:05:05,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-11 06:05:05,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:05,397 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] [2022-01-11 06:05:05,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:05:05,397 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:05,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:05,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1369643979, now seen corresponding path program 1 times [2022-01-11 06:05:05,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:05,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841601464] [2022-01-11 06:05:05,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:05,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:05,424 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 06:05:05,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:05,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841601464] [2022-01-11 06:05:05,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841601464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:05,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:05,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:05,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866984673] [2022-01-11 06:05:05,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:05,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:05,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:05,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:05,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:05,426 INFO L87 Difference]: Start difference. First operand 3304 states and 4173 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:05,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:05,623 INFO L93 Difference]: Finished difference Result 6508 states and 8230 transitions. [2022-01-11 06:05:05,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:05,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 105 [2022-01-11 06:05:05,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:05,632 INFO L225 Difference]: With dead ends: 6508 [2022-01-11 06:05:05,633 INFO L226 Difference]: Without dead ends: 3257 [2022-01-11 06:05:05,637 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 [2022-01-11 06:05:05,638 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 402 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:05,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 406 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:05,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3257 states. [2022-01-11 06:05:05,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3257 to 3257. [2022-01-11 06:05:05,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3257 states, 3256 states have (on average 1.2647420147420148) internal successors, (4118), 3256 states have internal predecessors, (4118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:05,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3257 states to 3257 states and 4118 transitions. [2022-01-11 06:05:05,788 INFO L78 Accepts]: Start accepts. Automaton has 3257 states and 4118 transitions. Word has length 105 [2022-01-11 06:05:05,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:05,788 INFO L470 AbstractCegarLoop]: Abstraction has 3257 states and 4118 transitions. [2022-01-11 06:05:05,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:05,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3257 states and 4118 transitions. [2022-01-11 06:05:05,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-11 06:05:05,790 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:05,790 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] [2022-01-11 06:05:05,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:05:05,791 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:05,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:05,791 INFO L85 PathProgramCache]: Analyzing trace with hash -731350212, now seen corresponding path program 1 times [2022-01-11 06:05:05,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:05,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113011483] [2022-01-11 06:05:05,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:05,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:05,830 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:05,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:05,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113011483] [2022-01-11 06:05:05,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113011483] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:05,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:05,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:05,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351347228] [2022-01-11 06:05:05,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:05,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:05,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:05,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:05,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:05,831 INFO L87 Difference]: Start difference. First operand 3257 states and 4118 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:06,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:06,109 INFO L93 Difference]: Finished difference Result 9303 states and 11740 transitions. [2022-01-11 06:05:06,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:06,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-11 06:05:06,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:06,124 INFO L225 Difference]: With dead ends: 9303 [2022-01-11 06:05:06,125 INFO L226 Difference]: Without dead ends: 6099 [2022-01-11 06:05:06,128 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 [2022-01-11 06:05:06,129 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 343 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:06,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 870 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:06,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6099 states. [2022-01-11 06:05:06,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6099 to 5921. [2022-01-11 06:05:06,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5921 states, 5920 states have (on average 1.2530405405405405) internal successors, (7418), 5920 states have internal predecessors, (7418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:06,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5921 states to 5921 states and 7418 transitions. [2022-01-11 06:05:06,384 INFO L78 Accepts]: Start accepts. Automaton has 5921 states and 7418 transitions. Word has length 106 [2022-01-11 06:05:06,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:06,384 INFO L470 AbstractCegarLoop]: Abstraction has 5921 states and 7418 transitions. [2022-01-11 06:05:06,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:06,384 INFO L276 IsEmpty]: Start isEmpty. Operand 5921 states and 7418 transitions. [2022-01-11 06:05:06,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-11 06:05:06,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:06,387 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] [2022-01-11 06:05:06,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 06:05:06,387 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:06,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:06,387 INFO L85 PathProgramCache]: Analyzing trace with hash 286868377, now seen corresponding path program 1 times [2022-01-11 06:05:06,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:06,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775471001] [2022-01-11 06:05:06,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:06,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:06,412 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 06:05:06,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:06,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775471001] [2022-01-11 06:05:06,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775471001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:06,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:06,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:06,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801483826] [2022-01-11 06:05:06,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:06,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:06,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:06,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:06,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:06,413 INFO L87 Difference]: Start difference. First operand 5921 states and 7418 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:06,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:06,671 INFO L93 Difference]: Finished difference Result 11760 states and 14742 transitions. [2022-01-11 06:05:06,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:06,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 106 [2022-01-11 06:05:06,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:06,687 INFO L225 Difference]: With dead ends: 11760 [2022-01-11 06:05:06,687 INFO L226 Difference]: Without dead ends: 5875 [2022-01-11 06:05:06,692 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 [2022-01-11 06:05:06,693 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 400 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:06,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 405 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:06,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5875 states. [2022-01-11 06:05:06,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5875 to 5875. [2022-01-11 06:05:06,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5875 states, 5874 states have (on average 1.2538304392236976) internal successors, (7365), 5874 states have internal predecessors, (7365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:06,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5875 states to 5875 states and 7365 transitions. [2022-01-11 06:05:06,915 INFO L78 Accepts]: Start accepts. Automaton has 5875 states and 7365 transitions. Word has length 106 [2022-01-11 06:05:06,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:06,915 INFO L470 AbstractCegarLoop]: Abstraction has 5875 states and 7365 transitions. [2022-01-11 06:05:06,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:06,916 INFO L276 IsEmpty]: Start isEmpty. Operand 5875 states and 7365 transitions. [2022-01-11 06:05:06,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-11 06:05:06,918 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:06,918 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] [2022-01-11 06:05:06,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 06:05:06,918 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:06,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:06,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1194327413, now seen corresponding path program 1 times [2022-01-11 06:05:06,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:06,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784736330] [2022-01-11 06:05:06,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:06,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:06,973 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:06,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:06,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784736330] [2022-01-11 06:05:06,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784736330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:06,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:06,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:06,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253139932] [2022-01-11 06:05:06,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:06,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:06,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:06,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:06,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:06,975 INFO L87 Difference]: Start difference. First operand 5875 states and 7365 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:07,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:07,342 INFO L93 Difference]: Finished difference Result 16572 states and 20729 transitions. [2022-01-11 06:05:07,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:07,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-11 06:05:07,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:07,367 INFO L225 Difference]: With dead ends: 16572 [2022-01-11 06:05:07,367 INFO L226 Difference]: Without dead ends: 10750 [2022-01-11 06:05:07,374 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 [2022-01-11 06:05:07,375 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 342 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:07,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 841 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:07,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10750 states. [2022-01-11 06:05:07,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10750 to 10620. [2022-01-11 06:05:07,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10620 states, 10619 states have (on average 1.2467275638007345) internal successors, (13239), 10619 states have internal predecessors, (13239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:07,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10620 states to 10620 states and 13239 transitions. [2022-01-11 06:05:07,884 INFO L78 Accepts]: Start accepts. Automaton has 10620 states and 13239 transitions. Word has length 107 [2022-01-11 06:05:07,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:07,884 INFO L470 AbstractCegarLoop]: Abstraction has 10620 states and 13239 transitions. [2022-01-11 06:05:07,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:07,885 INFO L276 IsEmpty]: Start isEmpty. Operand 10620 states and 13239 transitions. [2022-01-11 06:05:07,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-11 06:05:07,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:07,889 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] [2022-01-11 06:05:07,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 06:05:07,889 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:07,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:07,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1505178668, now seen corresponding path program 1 times [2022-01-11 06:05:07,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:07,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145631143] [2022-01-11 06:05:07,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:07,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:07,910 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 06:05:07,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:07,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145631143] [2022-01-11 06:05:07,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145631143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:07,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:07,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:07,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237442319] [2022-01-11 06:05:07,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:07,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:07,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:07,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:07,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:07,912 INFO L87 Difference]: Start difference. First operand 10620 states and 13239 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:08,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:08,289 INFO L93 Difference]: Finished difference Result 21152 states and 26378 transitions. [2022-01-11 06:05:08,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:08,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-01-11 06:05:08,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:08,311 INFO L225 Difference]: With dead ends: 21152 [2022-01-11 06:05:08,311 INFO L226 Difference]: Without dead ends: 10575 [2022-01-11 06:05:08,325 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 [2022-01-11 06:05:08,326 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 398 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:08,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 404 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:08,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10575 states. [2022-01-11 06:05:08,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10575 to 10575. [2022-01-11 06:05:08,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10575 states, 10574 states have (on average 1.2472101380745224) internal successors, (13188), 10574 states have internal predecessors, (13188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10575 states to 10575 states and 13188 transitions. [2022-01-11 06:05:08,774 INFO L78 Accepts]: Start accepts. Automaton has 10575 states and 13188 transitions. Word has length 107 [2022-01-11 06:05:08,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:08,774 INFO L470 AbstractCegarLoop]: Abstraction has 10575 states and 13188 transitions. [2022-01-11 06:05:08,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:08,775 INFO L276 IsEmpty]: Start isEmpty. Operand 10575 states and 13188 transitions. [2022-01-11 06:05:08,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-11 06:05:08,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:08,778 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] [2022-01-11 06:05:08,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 06:05:08,778 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:08,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:08,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1765803381, now seen corresponding path program 1 times [2022-01-11 06:05:08,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:08,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868808344] [2022-01-11 06:05:08,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:08,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:08,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:08,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868808344] [2022-01-11 06:05:08,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868808344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:08,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:08,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:08,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593430666] [2022-01-11 06:05:08,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:08,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:08,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:08,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:08,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:08,809 INFO L87 Difference]: Start difference. First operand 10575 states and 13188 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:09,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:09,613 INFO L93 Difference]: Finished difference Result 30321 states and 37754 transitions. [2022-01-11 06:05:09,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:09,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-01-11 06:05:09,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:09,650 INFO L225 Difference]: With dead ends: 30321 [2022-01-11 06:05:09,651 INFO L226 Difference]: Without dead ends: 19799 [2022-01-11 06:05:09,666 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 [2022-01-11 06:05:09,666 INFO L933 BasicCegarLoop]: 737 mSDtfsCounter, 331 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:09,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 1121 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:09,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19799 states. [2022-01-11 06:05:10,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19799 to 19799. [2022-01-11 06:05:10,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19799 states, 19798 states have (on average 1.2308819072633599) internal successors, (24369), 19798 states have internal predecessors, (24369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:10,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19799 states to 19799 states and 24369 transitions. [2022-01-11 06:05:10,679 INFO L78 Accepts]: Start accepts. Automaton has 19799 states and 24369 transitions. Word has length 108 [2022-01-11 06:05:10,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:10,680 INFO L470 AbstractCegarLoop]: Abstraction has 19799 states and 24369 transitions. [2022-01-11 06:05:10,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:10,680 INFO L276 IsEmpty]: Start isEmpty. Operand 19799 states and 24369 transitions. [2022-01-11 06:05:10,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-11 06:05:10,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:10,694 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] [2022-01-11 06:05:10,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 06:05:10,694 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:10,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:10,694 INFO L85 PathProgramCache]: Analyzing trace with hash -2020584706, now seen corresponding path program 1 times [2022-01-11 06:05:10,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:10,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89271924] [2022-01-11 06:05:10,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:10,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:10,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:10,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:10,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89271924] [2022-01-11 06:05:10,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89271924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:10,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:10,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:10,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515631562] [2022-01-11 06:05:10,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:10,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:10,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:10,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:10,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:10,732 INFO L87 Difference]: Start difference. First operand 19799 states and 24369 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:11,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:11,707 INFO L93 Difference]: Finished difference Result 48317 states and 59419 transitions. [2022-01-11 06:05:11,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:11,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-01-11 06:05:11,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:11,768 INFO L225 Difference]: With dead ends: 48317 [2022-01-11 06:05:11,768 INFO L226 Difference]: Without dead ends: 28575 [2022-01-11 06:05:11,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:11,794 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 245 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:11,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 725 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:11,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28575 states. [2022-01-11 06:05:12,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28575 to 28445. [2022-01-11 06:05:13,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28445 states, 28444 states have (on average 1.2219448741386585) internal successors, (34757), 28444 states have internal predecessors, (34757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:13,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28445 states to 28445 states and 34757 transitions. [2022-01-11 06:05:13,054 INFO L78 Accepts]: Start accepts. Automaton has 28445 states and 34757 transitions. Word has length 139 [2022-01-11 06:05:13,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:13,055 INFO L470 AbstractCegarLoop]: Abstraction has 28445 states and 34757 transitions. [2022-01-11 06:05:13,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:13,055 INFO L276 IsEmpty]: Start isEmpty. Operand 28445 states and 34757 transitions. [2022-01-11 06:05:13,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-11 06:05:13,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:13,074 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] [2022-01-11 06:05:13,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 06:05:13,074 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:13,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:13,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1864537815, now seen corresponding path program 1 times [2022-01-11 06:05:13,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:13,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669175437] [2022-01-11 06:05:13,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:13,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:13,112 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:13,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:13,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669175437] [2022-01-11 06:05:13,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669175437] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:13,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:13,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 06:05:13,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734056210] [2022-01-11 06:05:13,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:13,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:13,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:13,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:13,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:13,113 INFO L87 Difference]: Start difference. First operand 28445 states and 34757 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:14,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:14,802 INFO L93 Difference]: Finished difference Result 69489 states and 84905 transitions. [2022-01-11 06:05:14,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:14,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-01-11 06:05:14,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:14,963 INFO L225 Difference]: With dead ends: 69489 [2022-01-11 06:05:14,964 INFO L226 Difference]: Without dead ends: 41113 [2022-01-11 06:05:14,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:14,987 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 247 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:14,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 723 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:15,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41113 states. [2022-01-11 06:05:16,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41113 to 40919. [2022-01-11 06:05:16,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40919 states, 40918 states have (on average 1.2148443227919252) internal successors, (49709), 40918 states have internal predecessors, (49709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:16,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40919 states to 40919 states and 49709 transitions. [2022-01-11 06:05:16,758 INFO L78 Accepts]: Start accepts. Automaton has 40919 states and 49709 transitions. Word has length 139 [2022-01-11 06:05:16,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:16,758 INFO L470 AbstractCegarLoop]: Abstraction has 40919 states and 49709 transitions. [2022-01-11 06:05:16,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:16,759 INFO L276 IsEmpty]: Start isEmpty. Operand 40919 states and 49709 transitions. [2022-01-11 06:05:16,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-11 06:05:16,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:16,785 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2022-01-11 06:05:16,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 06:05:16,786 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:16,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:16,786 INFO L85 PathProgramCache]: Analyzing trace with hash -278180088, now seen corresponding path program 1 times [2022-01-11 06:05:16,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:16,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721943514] [2022-01-11 06:05:16,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:16,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:16,811 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-11 06:05:16,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:16,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721943514] [2022-01-11 06:05:16,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721943514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:16,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:16,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:16,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024831816] [2022-01-11 06:05:16,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:16,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:16,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:16,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:16,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:16,812 INFO L87 Difference]: Start difference. First operand 40919 states and 49709 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:18,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:18,459 INFO L93 Difference]: Finished difference Result 73327 states and 89196 transitions. [2022-01-11 06:05:18,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:18,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 156 [2022-01-11 06:05:18,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:18,526 INFO L225 Difference]: With dead ends: 73327 [2022-01-11 06:05:18,526 INFO L226 Difference]: Without dead ends: 41879 [2022-01-11 06:05:18,550 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 [2022-01-11 06:05:18,551 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 314 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:18,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 783 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:05:18,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41879 states. [2022-01-11 06:05:20,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41879 to 40199. [2022-01-11 06:05:20,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40199 states, 40198 states have (on average 1.1966018209861187) internal successors, (48101), 40198 states have internal predecessors, (48101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:20,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40199 states to 40199 states and 48101 transitions. [2022-01-11 06:05:20,360 INFO L78 Accepts]: Start accepts. Automaton has 40199 states and 48101 transitions. Word has length 156 [2022-01-11 06:05:20,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:20,361 INFO L470 AbstractCegarLoop]: Abstraction has 40199 states and 48101 transitions. [2022-01-11 06:05:20,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:20,361 INFO L276 IsEmpty]: Start isEmpty. Operand 40199 states and 48101 transitions. [2022-01-11 06:05:20,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-11 06:05:20,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:20,385 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-01-11 06:05:20,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 06:05:20,385 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:20,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:20,385 INFO L85 PathProgramCache]: Analyzing trace with hash 830869758, now seen corresponding path program 1 times [2022-01-11 06:05:20,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:20,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053517139] [2022-01-11 06:05:20,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:20,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:20,416 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-11 06:05:20,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:20,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053517139] [2022-01-11 06:05:20,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053517139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:20,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:20,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:20,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343553289] [2022-01-11 06:05:20,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:20,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:20,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:20,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:20,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:20,418 INFO L87 Difference]: Start difference. First operand 40199 states and 48101 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:21,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:21,937 INFO L93 Difference]: Finished difference Result 74875 states and 89615 transitions. [2022-01-11 06:05:21,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:21,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 157 [2022-01-11 06:05:21,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:21,990 INFO L225 Difference]: With dead ends: 74875 [2022-01-11 06:05:21,990 INFO L226 Difference]: Without dead ends: 34773 [2022-01-11 06:05:22,020 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 [2022-01-11 06:05:22,020 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 287 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:22,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 1039 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:22,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34773 states. [2022-01-11 06:05:23,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34773 to 34771. [2022-01-11 06:05:23,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34771 states, 34770 states have (on average 1.1865688812194422) internal successors, (41257), 34770 states have internal predecessors, (41257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:23,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34771 states to 34771 states and 41257 transitions. [2022-01-11 06:05:23,632 INFO L78 Accepts]: Start accepts. Automaton has 34771 states and 41257 transitions. Word has length 157 [2022-01-11 06:05:23,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:23,632 INFO L470 AbstractCegarLoop]: Abstraction has 34771 states and 41257 transitions. [2022-01-11 06:05:23,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:23,632 INFO L276 IsEmpty]: Start isEmpty. Operand 34771 states and 41257 transitions. [2022-01-11 06:05:23,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-11 06:05:23,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:23,650 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-01-11 06:05:23,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 06:05:23,650 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:23,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:23,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1428494723, now seen corresponding path program 1 times [2022-01-11 06:05:23,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:23,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030252553] [2022-01-11 06:05:23,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:23,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:23,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:23,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030252553] [2022-01-11 06:05:23,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030252553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:23,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:23,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:23,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285822649] [2022-01-11 06:05:23,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:23,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:23,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:23,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:23,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:23,685 INFO L87 Difference]: Start difference. First operand 34771 states and 41257 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:25,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:25,146 INFO L93 Difference]: Finished difference Result 58899 states and 70103 transitions. [2022-01-11 06:05:25,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:25,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2022-01-11 06:05:25,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:25,204 INFO L225 Difference]: With dead ends: 58899 [2022-01-11 06:05:25,204 INFO L226 Difference]: Without dead ends: 34773 [2022-01-11 06:05:25,225 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 [2022-01-11 06:05:25,226 INFO L933 BasicCegarLoop]: 676 mSDtfsCounter, 278 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:25,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 1051 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:25,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34773 states. [2022-01-11 06:05:26,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34773 to 34771. [2022-01-11 06:05:26,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34771 states, 34770 states have (on average 1.1820822548173713) internal successors, (41101), 34770 states have internal predecessors, (41101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:26,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34771 states to 34771 states and 41101 transitions. [2022-01-11 06:05:26,604 INFO L78 Accepts]: Start accepts. Automaton has 34771 states and 41101 transitions. Word has length 157 [2022-01-11 06:05:26,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:26,604 INFO L470 AbstractCegarLoop]: Abstraction has 34771 states and 41101 transitions. [2022-01-11 06:05:26,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:26,605 INFO L276 IsEmpty]: Start isEmpty. Operand 34771 states and 41101 transitions. [2022-01-11 06:05:26,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-11 06:05:26,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:26,622 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-01-11 06:05:26,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 06:05:26,622 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:26,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:26,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1520392940, now seen corresponding path program 1 times [2022-01-11 06:05:26,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:26,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122817749] [2022-01-11 06:05:26,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:26,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:26,655 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:26,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:26,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122817749] [2022-01-11 06:05:26,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122817749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:26,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:26,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:26,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48868770] [2022-01-11 06:05:26,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:26,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:26,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:26,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:26,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:26,657 INFO L87 Difference]: Start difference. First operand 34771 states and 41101 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:28,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:28,207 INFO L93 Difference]: Finished difference Result 58875 states and 69803 transitions. [2022-01-11 06:05:28,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:28,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2022-01-11 06:05:28,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:28,258 INFO L225 Difference]: With dead ends: 58875 [2022-01-11 06:05:28,258 INFO L226 Difference]: Without dead ends: 34773 [2022-01-11 06:05:28,280 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 [2022-01-11 06:05:28,281 INFO L933 BasicCegarLoop]: 684 mSDtfsCounter, 278 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:28,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 1065 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:28,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34773 states. [2022-01-11 06:05:29,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34773 to 34771. [2022-01-11 06:05:29,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34771 states, 34770 states have (on average 1.1789761288467069) internal successors, (40993), 34770 states have internal predecessors, (40993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:29,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34771 states to 34771 states and 40993 transitions. [2022-01-11 06:05:29,705 INFO L78 Accepts]: Start accepts. Automaton has 34771 states and 40993 transitions. Word has length 157 [2022-01-11 06:05:29,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:29,705 INFO L470 AbstractCegarLoop]: Abstraction has 34771 states and 40993 transitions. [2022-01-11 06:05:29,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:29,705 INFO L276 IsEmpty]: Start isEmpty. Operand 34771 states and 40993 transitions. [2022-01-11 06:05:29,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-11 06:05:29,718 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:29,718 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-01-11 06:05:29,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 06:05:29,719 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:29,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:29,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1152819136, now seen corresponding path program 1 times [2022-01-11 06:05:29,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:29,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603287837] [2022-01-11 06:05:29,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:29,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:29,748 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 06:05:29,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:29,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603287837] [2022-01-11 06:05:29,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603287837] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:29,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:29,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:29,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856483544] [2022-01-11 06:05:29,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:29,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:29,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:29,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:29,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:29,749 INFO L87 Difference]: Start difference. First operand 34771 states and 40993 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:31,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:31,165 INFO L93 Difference]: Finished difference Result 58003 states and 68748 transitions. [2022-01-11 06:05:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:31,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 157 [2022-01-11 06:05:31,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:31,221 INFO L225 Difference]: With dead ends: 58003 [2022-01-11 06:05:31,221 INFO L226 Difference]: Without dead ends: 36433 [2022-01-11 06:05:31,254 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 [2022-01-11 06:05:31,255 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 331 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:31,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 934 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:31,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36433 states. [2022-01-11 06:05:32,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36433 to 34717. [2022-01-11 06:05:32,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34717 states, 34716 states have (on average 1.1630084111072705) internal successors, (40375), 34716 states have internal predecessors, (40375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:32,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34717 states to 34717 states and 40375 transitions. [2022-01-11 06:05:32,683 INFO L78 Accepts]: Start accepts. Automaton has 34717 states and 40375 transitions. Word has length 157 [2022-01-11 06:05:32,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:32,684 INFO L470 AbstractCegarLoop]: Abstraction has 34717 states and 40375 transitions. [2022-01-11 06:05:32,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:32,684 INFO L276 IsEmpty]: Start isEmpty. Operand 34717 states and 40375 transitions. [2022-01-11 06:05:32,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-11 06:05:32,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:32,698 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-01-11 06:05:32,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 06:05:32,698 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:32,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:32,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2054038392, now seen corresponding path program 1 times [2022-01-11 06:05:32,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:32,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416698471] [2022-01-11 06:05:32,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:32,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:32,730 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:32,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:32,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416698471] [2022-01-11 06:05:32,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416698471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:32,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:32,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:32,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630134546] [2022-01-11 06:05:32,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:32,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:32,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:32,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:32,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:32,731 INFO L87 Difference]: Start difference. First operand 34717 states and 40375 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:34,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:34,579 INFO L93 Difference]: Finished difference Result 58953 states and 68709 transitions. [2022-01-11 06:05:34,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:34,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 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 157 [2022-01-11 06:05:34,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:34,635 INFO L225 Difference]: With dead ends: 58953 [2022-01-11 06:05:34,635 INFO L226 Difference]: Without dead ends: 34887 [2022-01-11 06:05:34,656 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 [2022-01-11 06:05:34,656 INFO L933 BasicCegarLoop]: 670 mSDtfsCounter, 305 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:34,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 1003 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:05:34,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34887 states. [2022-01-11 06:05:35,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34887 to 34717. [2022-01-11 06:05:35,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34717 states, 34716 states have (on average 1.1448035487959443) internal successors, (39743), 34716 states have internal predecessors, (39743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:36,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34717 states to 34717 states and 39743 transitions. [2022-01-11 06:05:36,053 INFO L78 Accepts]: Start accepts. Automaton has 34717 states and 39743 transitions. Word has length 157 [2022-01-11 06:05:36,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:36,054 INFO L470 AbstractCegarLoop]: Abstraction has 34717 states and 39743 transitions. [2022-01-11 06:05:36,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:36,054 INFO L276 IsEmpty]: Start isEmpty. Operand 34717 states and 39743 transitions. [2022-01-11 06:05:36,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 06:05:36,068 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:36,068 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-01-11 06:05:36,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 06:05:36,068 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:36,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:36,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1644077573, now seen corresponding path program 1 times [2022-01-11 06:05:36,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:36,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145195826] [2022-01-11 06:05:36,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:36,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:36,105 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:36,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:36,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145195826] [2022-01-11 06:05:36,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145195826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:36,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:36,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:36,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140392629] [2022-01-11 06:05:36,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:36,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:36,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:36,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:36,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:36,106 INFO L87 Difference]: Start difference. First operand 34717 states and 39743 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:37,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:37,234 INFO L93 Difference]: Finished difference Result 51191 states and 58789 transitions. [2022-01-11 06:05:37,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:37,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2022-01-11 06:05:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:37,272 INFO L225 Difference]: With dead ends: 51191 [2022-01-11 06:05:37,272 INFO L226 Difference]: Without dead ends: 25489 [2022-01-11 06:05:37,295 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 [2022-01-11 06:05:37,296 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 279 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:37,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 975 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:37,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25489 states. [2022-01-11 06:05:38,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25489 to 25415. [2022-01-11 06:05:38,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25415 states, 25414 states have (on average 1.1358699929172897) internal successors, (28867), 25414 states have internal predecessors, (28867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:38,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25415 states to 25415 states and 28867 transitions. [2022-01-11 06:05:38,774 INFO L78 Accepts]: Start accepts. Automaton has 25415 states and 28867 transitions. Word has length 158 [2022-01-11 06:05:38,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:38,775 INFO L470 AbstractCegarLoop]: Abstraction has 25415 states and 28867 transitions. [2022-01-11 06:05:38,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:38,775 INFO L276 IsEmpty]: Start isEmpty. Operand 25415 states and 28867 transitions. [2022-01-11 06:05:38,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-11 06:05:38,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:38,786 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-01-11 06:05:38,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 06:05:38,787 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:38,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:38,787 INFO L85 PathProgramCache]: Analyzing trace with hash -603715707, now seen corresponding path program 1 times [2022-01-11 06:05:38,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:38,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9846441] [2022-01-11 06:05:38,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:38,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:38,820 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:05:38,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:38,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9846441] [2022-01-11 06:05:38,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9846441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:38,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:38,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:05:38,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193259410] [2022-01-11 06:05:38,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:38,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:05:38,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:38,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:05:38,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:05:38,821 INFO L87 Difference]: Start difference. First operand 25415 states and 28867 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:39,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:39,904 INFO L93 Difference]: Finished difference Result 43139 states and 49101 transitions. [2022-01-11 06:05:39,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:05:39,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2022-01-11 06:05:39,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:39,948 INFO L225 Difference]: With dead ends: 43139 [2022-01-11 06:05:39,949 INFO L226 Difference]: Without dead ends: 25537 [2022-01-11 06:05:39,965 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 [2022-01-11 06:05:39,965 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 306 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:39,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 982 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:39,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25537 states. [2022-01-11 06:05:41,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25537 to 25415. [2022-01-11 06:05:41,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25415 states, 25414 states have (on average 1.1177697332179113) internal successors, (28407), 25414 states have internal predecessors, (28407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:41,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25415 states to 25415 states and 28407 transitions. [2022-01-11 06:05:41,120 INFO L78 Accepts]: Start accepts. Automaton has 25415 states and 28407 transitions. Word has length 158 [2022-01-11 06:05:41,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:41,120 INFO L470 AbstractCegarLoop]: Abstraction has 25415 states and 28407 transitions. [2022-01-11 06:05:41,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:41,120 INFO L276 IsEmpty]: Start isEmpty. Operand 25415 states and 28407 transitions. [2022-01-11 06:05:41,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-11 06:05:41,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:41,130 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-01-11 06:05:41,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 06:05:41,130 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:41,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:41,130 INFO L85 PathProgramCache]: Analyzing trace with hash 540260512, now seen corresponding path program 1 times [2022-01-11 06:05:41,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:41,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216174065] [2022-01-11 06:05:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:41,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:41,175 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-11 06:05:41,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:41,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216174065] [2022-01-11 06:05:41,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216174065] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:41,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:41,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:05:41,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502947654] [2022-01-11 06:05:41,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:41,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:05:41,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:41,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:05:41,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:05:41,177 INFO L87 Difference]: Start difference. First operand 25415 states and 28407 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:42,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:42,530 INFO L93 Difference]: Finished difference Result 47125 states and 52697 transitions. [2022-01-11 06:05:42,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:05:42,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 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 159 [2022-01-11 06:05:42,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:42,562 INFO L225 Difference]: With dead ends: 47125 [2022-01-11 06:05:42,563 INFO L226 Difference]: Without dead ends: 21733 [2022-01-11 06:05:42,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:05:42,579 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 1045 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:42,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1045 Valid, 968 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:42,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21733 states. [2022-01-11 06:05:43,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21733 to 18643. [2022-01-11 06:05:43,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18643 states, 18642 states have (on average 1.1005793369810106) internal successors, (20517), 18642 states have internal predecessors, (20517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:43,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18643 states to 18643 states and 20517 transitions. [2022-01-11 06:05:43,514 INFO L78 Accepts]: Start accepts. Automaton has 18643 states and 20517 transitions. Word has length 159 [2022-01-11 06:05:43,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:43,515 INFO L470 AbstractCegarLoop]: Abstraction has 18643 states and 20517 transitions. [2022-01-11 06:05:43,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:43,515 INFO L276 IsEmpty]: Start isEmpty. Operand 18643 states and 20517 transitions. [2022-01-11 06:05:43,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-11 06:05:43,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:43,522 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-01-11 06:05:43,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 06:05:43,522 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:43,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:43,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1459272969, now seen corresponding path program 1 times [2022-01-11 06:05:43,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:43,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569897918] [2022-01-11 06:05:43,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:43,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:43,577 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-11 06:05:43,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:43,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569897918] [2022-01-11 06:05:43,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569897918] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:43,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:43,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:05:43,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678010439] [2022-01-11 06:05:43,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:43,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:05:43,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:43,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:05:43,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:05:43,578 INFO L87 Difference]: Start difference. First operand 18643 states and 20517 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:44,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:44,698 INFO L93 Difference]: Finished difference Result 37374 states and 41121 transitions. [2022-01-11 06:05:44,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:05:44,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 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 159 [2022-01-11 06:05:44,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:44,722 INFO L225 Difference]: With dead ends: 37374 [2022-01-11 06:05:44,722 INFO L226 Difference]: Without dead ends: 18772 [2022-01-11 06:05:44,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:05:44,739 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 816 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:44,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 1142 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:05:44,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18772 states. [2022-01-11 06:05:45,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18772 to 15520. [2022-01-11 06:05:45,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15520 states, 15519 states have (on average 1.0811263612346156) internal successors, (16778), 15519 states have internal predecessors, (16778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:45,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15520 states to 15520 states and 16778 transitions. [2022-01-11 06:05:45,632 INFO L78 Accepts]: Start accepts. Automaton has 15520 states and 16778 transitions. Word has length 159 [2022-01-11 06:05:45,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:45,632 INFO L470 AbstractCegarLoop]: Abstraction has 15520 states and 16778 transitions. [2022-01-11 06:05:45,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:45,632 INFO L276 IsEmpty]: Start isEmpty. Operand 15520 states and 16778 transitions. [2022-01-11 06:05:45,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-01-11 06:05:45,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:45,640 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:45,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 06:05:45,640 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:45,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:45,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1088459601, now seen corresponding path program 1 times [2022-01-11 06:05:45,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:45,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219339720] [2022-01-11 06:05:45,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:45,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:45,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:45,700 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-01-11 06:05:45,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:45,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219339720] [2022-01-11 06:05:45,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219339720] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:45,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:45,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:05:45,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403817562] [2022-01-11 06:05:45,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:45,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:05:45,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:45,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:05:45,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:05:45,701 INFO L87 Difference]: Start difference. First operand 15520 states and 16778 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:46,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:46,197 INFO L93 Difference]: Finished difference Result 22137 states and 23882 transitions. [2022-01-11 06:05:46,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:05:46,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 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 198 [2022-01-11 06:05:46,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:46,202 INFO L225 Difference]: With dead ends: 22137 [2022-01-11 06:05:46,202 INFO L226 Difference]: Without dead ends: 4014 [2022-01-11 06:05:46,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 06:05:46,214 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 855 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:46,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [855 Valid, 903 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:05:46,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4014 states. [2022-01-11 06:05:46,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4014 to 3818. [2022-01-11 06:05:46,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3818 states, 3817 states have (on average 1.0539690856693738) internal successors, (4023), 3817 states have internal predecessors, (4023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:46,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3818 states to 3818 states and 4023 transitions. [2022-01-11 06:05:46,500 INFO L78 Accepts]: Start accepts. Automaton has 3818 states and 4023 transitions. Word has length 198 [2022-01-11 06:05:46,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:46,501 INFO L470 AbstractCegarLoop]: Abstraction has 3818 states and 4023 transitions. [2022-01-11 06:05:46,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:46,501 INFO L276 IsEmpty]: Start isEmpty. Operand 3818 states and 4023 transitions. [2022-01-11 06:05:46,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-01-11 06:05:46,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:05:46,504 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:05:46,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 06:05:46,504 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:05:46,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:05:46,505 INFO L85 PathProgramCache]: Analyzing trace with hash 226507276, now seen corresponding path program 1 times [2022-01-11 06:05:46,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:05:46,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111342836] [2022-01-11 06:05:46,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:05:46,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:05:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:05:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-11 06:05:46,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:05:46,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111342836] [2022-01-11 06:05:46,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111342836] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:05:46,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:05:46,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:05:46,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447005136] [2022-01-11 06:05:46,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:05:46,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:05:46,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:05:46,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:05:46,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:05:46,741 INFO L87 Difference]: Start difference. First operand 3818 states and 4023 transitions. Second operand has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:47,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:05:47,335 INFO L93 Difference]: Finished difference Result 3818 states and 4023 transitions. [2022-01-11 06:05:47,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:05:47,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 0 states have call successors, (0), 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 238 [2022-01-11 06:05:47,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:05:47,336 INFO L225 Difference]: With dead ends: 3818 [2022-01-11 06:05:47,336 INFO L226 Difference]: Without dead ends: 0 [2022-01-11 06:05:47,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:05:47,340 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 578 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 2883 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:05:47,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 2883 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:05:47,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-11 06:05:47,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-11 06:05:47,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:47,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-11 06:05:47,342 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 238 [2022-01-11 06:05:47,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:05:47,342 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-11 06:05:47,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.5) internal successors, (231), 6 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:05:47,342 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-11 06:05:47,343 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-11 06:05:47,345 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-11 06:05:47,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-11 06:05:47,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.