/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:29:57,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:29:57,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:29:57,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:29:57,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:29:57,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:29:57,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:29:57,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:29:57,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:29:57,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:29:57,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:29:57,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:29:57,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:29:57,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:29:57,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:29:57,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:29:57,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:29:57,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:29:57,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:29:57,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:29:57,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:29:57,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:29:57,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:29:57,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:29:57,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 18:29:57,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:29:57,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:29:57,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:29:57,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:29:57,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:29:57,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:29:57,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:29:57,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:29:57,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:29:57,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:29:57,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:29:57,763 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:29:57,795 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:29:57,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:29:57,795 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:29:57,795 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:29:57,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:29:57,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:29:57,796 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:29:57,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:29:57,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:29:57,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:29:57,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:29:57,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:29:57,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:29:57,797 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:29:57,797 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:29:57,798 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:29:57,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:29:57,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:29:57,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:29:57,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:29:57,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:29:57,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:29:57,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:29:57,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:29:57,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:29:57,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:29:57,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:29:57,801 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:29:57,801 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:29:57,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:29:57,801 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:29:57,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:29:57,802 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:29:57,802 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:29:57,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:29:58,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:29:58,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:29:58,024 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:29:58,025 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:29:58,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.15.cil.c [2022-01-10 18:29:58,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/077bbc375/326cf4b9fb964337b71ff5f9a6dc2654/FLAG26759b3f6 [2022-01-10 18:29:58,505 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:29:58,506 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.15.cil.c [2022-01-10 18:29:58,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/077bbc375/326cf4b9fb964337b71ff5f9a6dc2654/FLAG26759b3f6 [2022-01-10 18:29:58,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/077bbc375/326cf4b9fb964337b71ff5f9a6dc2654 [2022-01-10 18:29:58,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:29:58,549 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:29:58,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:29:58,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:29:58,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:29:58,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:29:58" (1/1) ... [2022-01-10 18:29:58,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d654d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:58, skipping insertion in model container [2022-01-10 18:29:58,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:29:58" (1/1) ... [2022-01-10 18:29:58,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:29:58,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:29:58,724 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/transmitter.15.cil.c[706,719] [2022-01-10 18:29:58,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:29:58,857 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:29:58,864 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/transmitter.15.cil.c[706,719] [2022-01-10 18:29:58,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:29:58,943 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:29:58,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:58 WrapperNode [2022-01-10 18:29:58,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:29:58,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:29:58,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:29:58,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:29:58,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:58" (1/1) ... [2022-01-10 18:29:58,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:58" (1/1) ... [2022-01-10 18:29:59,069 INFO L137 Inliner]: procedures = 54, calls = 69, calls flagged for inlining = 64, calls inlined = 286, statements flattened = 4413 [2022-01-10 18:29:59,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:29:59,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:29:59,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:29:59,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:29:59,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:58" (1/1) ... [2022-01-10 18:29:59,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:58" (1/1) ... [2022-01-10 18:29:59,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:58" (1/1) ... [2022-01-10 18:29:59,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:58" (1/1) ... [2022-01-10 18:29:59,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:58" (1/1) ... [2022-01-10 18:29:59,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:58" (1/1) ... [2022-01-10 18:29:59,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:58" (1/1) ... [2022-01-10 18:29:59,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:29:59,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:29:59,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:29:59,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:29:59,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:58" (1/1) ... [2022-01-10 18:29:59,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:29:59,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:29:59,266 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 18:29:59,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 18:29:59,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:29:59,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:29:59,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:29:59,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:29:59,427 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:29:59,428 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:30:01,213 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:30:01,237 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:30:01,237 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2022-01-10 18:30:01,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:30:01 BoogieIcfgContainer [2022-01-10 18:30:01,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:30:01,241 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:30:01,241 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:30:01,242 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:30:01,244 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:30:01" (1/1) ... [2022-01-10 18:30:01,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:30:01 BasicIcfg [2022-01-10 18:30:01,559 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:30:01,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:30:01,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:30:01,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:30:01,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:29:58" (1/4) ... [2022-01-10 18:30:01,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f39d66b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:30:01, skipping insertion in model container [2022-01-10 18:30:01,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:29:58" (2/4) ... [2022-01-10 18:30:01,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f39d66b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:30:01, skipping insertion in model container [2022-01-10 18:30:01,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:30:01" (3/4) ... [2022-01-10 18:30:01,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f39d66b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:30:01, skipping insertion in model container [2022-01-10 18:30:01,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:30:01" (4/4) ... [2022-01-10 18:30:01,564 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.15.cil.cTransformedIcfg [2022-01-10 18:30:01,567 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:30:01,567 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:30:01,600 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:30:01,604 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:30:01,605 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:30:01,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 1921 states, 1919 states have (on average 1.4992183428869204) internal successors, (2877), 1920 states have internal predecessors, (2877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:01,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:01,638 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:01,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:01,639 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:01,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:01,643 INFO L85 PathProgramCache]: Analyzing trace with hash -753134226, now seen corresponding path program 1 times [2022-01-10 18:30:01,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:01,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515317521] [2022-01-10 18:30:01,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:01,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:01,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:01,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:01,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515317521] [2022-01-10 18:30:01,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515317521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:01,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:01,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:01,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804479477] [2022-01-10 18:30:01,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:01,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:01,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:01,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:01,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:01,917 INFO L87 Difference]: Start difference. First operand has 1921 states, 1919 states have (on average 1.4992183428869204) internal successors, (2877), 1920 states have internal predecessors, (2877), 0 states have call successors, (0), 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 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:02,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:02,200 INFO L93 Difference]: Finished difference Result 5468 states and 8168 transitions. [2022-01-10 18:30:02,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:02,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:02,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:02,227 INFO L225 Difference]: With dead ends: 5468 [2022-01-10 18:30:02,227 INFO L226 Difference]: Without dead ends: 3559 [2022-01-10 18:30:02,236 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 [2022-01-10 18:30:02,240 INFO L933 BasicCegarLoop]: 2819 mSDtfsCounter, 2659 mSDsluCounter, 2521 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2659 SdHoareTripleChecker+Valid, 5340 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:02,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2659 Valid, 5340 Invalid, 74 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:30:02,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3559 states. [2022-01-10 18:30:02,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3559 to 3557. [2022-01-10 18:30:02,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.4701912260967378) internal successors, (5228), 3556 states have internal predecessors, (5228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:02,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 5228 transitions. [2022-01-10 18:30:02,386 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 5228 transitions. Word has length 171 [2022-01-10 18:30:02,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:02,387 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 5228 transitions. [2022-01-10 18:30:02,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:02,388 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 5228 transitions. [2022-01-10 18:30:02,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:02,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:02,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:02,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:30:02,390 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:02,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:02,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1304002035, now seen corresponding path program 1 times [2022-01-10 18:30:02,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:02,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516860749] [2022-01-10 18:30:02,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:02,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:02,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:02,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:02,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516860749] [2022-01-10 18:30:02,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516860749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:02,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:02,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:02,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301167008] [2022-01-10 18:30:02,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:02,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:02,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:02,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:02,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:02,539 INFO L87 Difference]: Start difference. First operand 3557 states and 5228 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:02,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:02,698 INFO L93 Difference]: Finished difference Result 7092 states and 10418 transitions. [2022-01-10 18:30:02,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:02,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:02,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:02,709 INFO L225 Difference]: With dead ends: 7092 [2022-01-10 18:30:02,710 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:02,718 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 [2022-01-10 18:30:02,719 INFO L933 BasicCegarLoop]: 2824 mSDtfsCounter, 2808 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2808 SdHoareTripleChecker+Valid, 2824 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 [2022-01-10 18:30:02,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2808 Valid, 2824 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:02,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:02,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:02,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.467941507311586) internal successors, (5220), 3556 states have internal predecessors, (5220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:02,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 5220 transitions. [2022-01-10 18:30:02,818 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 5220 transitions. Word has length 171 [2022-01-10 18:30:02,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:02,820 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 5220 transitions. [2022-01-10 18:30:02,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:02,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 5220 transitions. [2022-01-10 18:30:02,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:02,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:02,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:02,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:30:02,830 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:02,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:02,835 INFO L85 PathProgramCache]: Analyzing trace with hash 2014701899, now seen corresponding path program 1 times [2022-01-10 18:30:02,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:02,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479715280] [2022-01-10 18:30:02,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:02,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:02,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:02,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:02,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479715280] [2022-01-10 18:30:02,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479715280] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:02,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:02,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:02,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693499641] [2022-01-10 18:30:02,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:02,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:02,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:02,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:02,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:02,925 INFO L87 Difference]: Start difference. First operand 3557 states and 5220 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:03,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:03,061 INFO L93 Difference]: Finished difference Result 7091 states and 10401 transitions. [2022-01-10 18:30:03,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:03,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:03,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:03,073 INFO L225 Difference]: With dead ends: 7091 [2022-01-10 18:30:03,073 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:03,077 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 [2022-01-10 18:30:03,082 INFO L933 BasicCegarLoop]: 2819 mSDtfsCounter, 2802 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2802 SdHoareTripleChecker+Valid, 2819 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 [2022-01-10 18:30:03,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2802 Valid, 2819 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:03,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:03,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:03,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.4656917885264342) internal successors, (5212), 3556 states have internal predecessors, (5212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:03,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 5212 transitions. [2022-01-10 18:30:03,194 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 5212 transitions. Word has length 171 [2022-01-10 18:30:03,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:03,194 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 5212 transitions. [2022-01-10 18:30:03,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:03,195 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 5212 transitions. [2022-01-10 18:30:03,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:03,196 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:03,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:03,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:30:03,197 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:03,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:03,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1757568435, now seen corresponding path program 1 times [2022-01-10 18:30:03,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:03,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358417615] [2022-01-10 18:30:03,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:03,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:03,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:03,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:03,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358417615] [2022-01-10 18:30:03,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358417615] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:03,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:03,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:03,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805484567] [2022-01-10 18:30:03,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:03,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:03,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:03,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:03,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:03,266 INFO L87 Difference]: Start difference. First operand 3557 states and 5212 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:03,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:03,366 INFO L93 Difference]: Finished difference Result 7090 states and 10384 transitions. [2022-01-10 18:30:03,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:03,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:03,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:03,378 INFO L225 Difference]: With dead ends: 7090 [2022-01-10 18:30:03,378 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:03,382 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 [2022-01-10 18:30:03,387 INFO L933 BasicCegarLoop]: 2814 mSDtfsCounter, 2796 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2796 SdHoareTripleChecker+Valid, 2814 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 [2022-01-10 18:30:03,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2796 Valid, 2814 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:03,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:03,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:03,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.4634420697412824) internal successors, (5204), 3556 states have internal predecessors, (5204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:03,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 5204 transitions. [2022-01-10 18:30:03,496 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 5204 transitions. Word has length 171 [2022-01-10 18:30:03,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:03,496 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 5204 transitions. [2022-01-10 18:30:03,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:03,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 5204 transitions. [2022-01-10 18:30:03,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:03,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:03,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:03,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:30:03,498 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:03,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:03,498 INFO L85 PathProgramCache]: Analyzing trace with hash 60408075, now seen corresponding path program 1 times [2022-01-10 18:30:03,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:03,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753582766] [2022-01-10 18:30:03,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:03,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:03,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:03,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:03,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753582766] [2022-01-10 18:30:03,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753582766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:03,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:03,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:03,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706688114] [2022-01-10 18:30:03,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:03,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:03,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:03,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:03,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:03,587 INFO L87 Difference]: Start difference. First operand 3557 states and 5204 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:03,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:03,685 INFO L93 Difference]: Finished difference Result 7089 states and 10367 transitions. [2022-01-10 18:30:03,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:03,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:03,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:03,697 INFO L225 Difference]: With dead ends: 7089 [2022-01-10 18:30:03,697 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:03,703 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 [2022-01-10 18:30:03,704 INFO L933 BasicCegarLoop]: 2809 mSDtfsCounter, 2790 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2790 SdHoareTripleChecker+Valid, 2809 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 [2022-01-10 18:30:03,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2790 Valid, 2809 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:03,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:03,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:03,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.4611923509561304) internal successors, (5196), 3556 states have internal predecessors, (5196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:03,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 5196 transitions. [2022-01-10 18:30:03,807 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 5196 transitions. Word has length 171 [2022-01-10 18:30:03,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:03,809 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 5196 transitions. [2022-01-10 18:30:03,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:03,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 5196 transitions. [2022-01-10 18:30:03,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:03,813 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:03,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:03,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:30:03,813 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:03,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:03,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1543515507, now seen corresponding path program 1 times [2022-01-10 18:30:03,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:03,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22809449] [2022-01-10 18:30:03,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:03,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:03,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:03,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22809449] [2022-01-10 18:30:03,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22809449] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:03,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:03,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:03,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383384888] [2022-01-10 18:30:03,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:03,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:03,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:03,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:03,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:03,879 INFO L87 Difference]: Start difference. First operand 3557 states and 5196 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:04,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:04,025 INFO L93 Difference]: Finished difference Result 7088 states and 10350 transitions. [2022-01-10 18:30:04,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:04,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:04,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:04,035 INFO L225 Difference]: With dead ends: 7088 [2022-01-10 18:30:04,035 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:04,038 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 [2022-01-10 18:30:04,039 INFO L933 BasicCegarLoop]: 2804 mSDtfsCounter, 2784 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2784 SdHoareTripleChecker+Valid, 2804 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 [2022-01-10 18:30:04,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2784 Valid, 2804 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:04,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:04,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:04,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.4589426321709786) internal successors, (5188), 3556 states have internal predecessors, (5188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:04,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 5188 transitions. [2022-01-10 18:30:04,152 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 5188 transitions. Word has length 171 [2022-01-10 18:30:04,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:04,153 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 5188 transitions. [2022-01-10 18:30:04,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:04,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 5188 transitions. [2022-01-10 18:30:04,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:04,154 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:04,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:04,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:30:04,155 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:04,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:04,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1179612981, now seen corresponding path program 1 times [2022-01-10 18:30:04,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:04,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628867532] [2022-01-10 18:30:04,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:04,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:04,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:04,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:04,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628867532] [2022-01-10 18:30:04,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628867532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:04,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:04,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:04,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357780014] [2022-01-10 18:30:04,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:04,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:04,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:04,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:04,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:04,208 INFO L87 Difference]: Start difference. First operand 3557 states and 5188 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:04,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:04,315 INFO L93 Difference]: Finished difference Result 7087 states and 10333 transitions. [2022-01-10 18:30:04,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:04,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:04,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:04,339 INFO L225 Difference]: With dead ends: 7087 [2022-01-10 18:30:04,339 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:04,345 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 [2022-01-10 18:30:04,345 INFO L933 BasicCegarLoop]: 2799 mSDtfsCounter, 2778 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2778 SdHoareTripleChecker+Valid, 2799 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 [2022-01-10 18:30:04,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2778 Valid, 2799 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:04,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:04,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:04,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.4566929133858268) internal successors, (5180), 3556 states have internal predecessors, (5180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:04,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 5180 transitions. [2022-01-10 18:30:04,504 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 5180 transitions. Word has length 171 [2022-01-10 18:30:04,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:04,504 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 5180 transitions. [2022-01-10 18:30:04,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:04,505 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 5180 transitions. [2022-01-10 18:30:04,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:04,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:04,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:04,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:30:04,506 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:04,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:04,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1880167117, now seen corresponding path program 1 times [2022-01-10 18:30:04,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:04,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718033784] [2022-01-10 18:30:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:04,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:04,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:04,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:04,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718033784] [2022-01-10 18:30:04,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718033784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:04,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:04,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:04,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658074652] [2022-01-10 18:30:04,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:04,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:04,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:04,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:04,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:04,556 INFO L87 Difference]: Start difference. First operand 3557 states and 5180 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:04,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:04,690 INFO L93 Difference]: Finished difference Result 7086 states and 10316 transitions. [2022-01-10 18:30:04,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:04,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:04,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:04,698 INFO L225 Difference]: With dead ends: 7086 [2022-01-10 18:30:04,698 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:04,703 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 [2022-01-10 18:30:04,703 INFO L933 BasicCegarLoop]: 2794 mSDtfsCounter, 2772 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2772 SdHoareTripleChecker+Valid, 2794 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 [2022-01-10 18:30:04,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2772 Valid, 2794 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:04,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:04,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:04,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.4544431946006748) internal successors, (5172), 3556 states have internal predecessors, (5172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:04,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 5172 transitions. [2022-01-10 18:30:04,809 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 5172 transitions. Word has length 171 [2022-01-10 18:30:04,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:04,809 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 5172 transitions. [2022-01-10 18:30:04,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:04,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 5172 transitions. [2022-01-10 18:30:04,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:04,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:04,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:04,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:30:04,811 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:04,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:04,811 INFO L85 PathProgramCache]: Analyzing trace with hash 39207051, now seen corresponding path program 1 times [2022-01-10 18:30:04,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:04,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239720222] [2022-01-10 18:30:04,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:04,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:04,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:04,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239720222] [2022-01-10 18:30:04,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239720222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:04,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:04,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:04,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477313648] [2022-01-10 18:30:04,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:04,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:04,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:04,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:04,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:04,851 INFO L87 Difference]: Start difference. First operand 3557 states and 5172 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:04,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:04,997 INFO L93 Difference]: Finished difference Result 7084 states and 10297 transitions. [2022-01-10 18:30:04,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:04,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:04,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:05,004 INFO L225 Difference]: With dead ends: 7084 [2022-01-10 18:30:05,004 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:05,009 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 [2022-01-10 18:30:05,011 INFO L933 BasicCegarLoop]: 2789 mSDtfsCounter, 2765 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2765 SdHoareTripleChecker+Valid, 2789 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 [2022-01-10 18:30:05,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2765 Valid, 2789 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:05,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:05,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:05,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.452193475815523) internal successors, (5164), 3556 states have internal predecessors, (5164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:05,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 5164 transitions. [2022-01-10 18:30:05,128 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 5164 transitions. Word has length 171 [2022-01-10 18:30:05,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:05,128 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 5164 transitions. [2022-01-10 18:30:05,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:05,128 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 5164 transitions. [2022-01-10 18:30:05,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:05,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:05,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:05,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:30:05,130 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:05,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:05,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1927792073, now seen corresponding path program 1 times [2022-01-10 18:30:05,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:05,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772050423] [2022-01-10 18:30:05,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:05,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:05,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:05,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:05,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772050423] [2022-01-10 18:30:05,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772050423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:05,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:05,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:05,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892176961] [2022-01-10 18:30:05,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:05,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:05,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:05,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:05,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:05,176 INFO L87 Difference]: Start difference. First operand 3557 states and 5164 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:05,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:05,299 INFO L93 Difference]: Finished difference Result 7083 states and 10280 transitions. [2022-01-10 18:30:05,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:05,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:05,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:05,306 INFO L225 Difference]: With dead ends: 7083 [2022-01-10 18:30:05,307 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:05,312 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 [2022-01-10 18:30:05,312 INFO L933 BasicCegarLoop]: 2784 mSDtfsCounter, 2759 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2759 SdHoareTripleChecker+Valid, 2784 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 [2022-01-10 18:30:05,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2759 Valid, 2784 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:05,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:05,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:05,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.4499437570303713) internal successors, (5156), 3556 states have internal predecessors, (5156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:05,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 5156 transitions. [2022-01-10 18:30:05,453 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 5156 transitions. Word has length 171 [2022-01-10 18:30:05,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:05,454 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 5156 transitions. [2022-01-10 18:30:05,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:05,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 5156 transitions. [2022-01-10 18:30:05,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:05,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:05,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:05,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:30:05,456 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:05,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:05,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1752063797, now seen corresponding path program 1 times [2022-01-10 18:30:05,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:05,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094067702] [2022-01-10 18:30:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:05,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:05,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:05,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:05,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094067702] [2022-01-10 18:30:05,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094067702] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:05,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:05,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:05,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272534006] [2022-01-10 18:30:05,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:05,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:05,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:05,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:05,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:05,514 INFO L87 Difference]: Start difference. First operand 3557 states and 5156 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:05,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:05,635 INFO L93 Difference]: Finished difference Result 7082 states and 10263 transitions. [2022-01-10 18:30:05,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:05,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:05,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:05,642 INFO L225 Difference]: With dead ends: 7082 [2022-01-10 18:30:05,643 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:05,647 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 [2022-01-10 18:30:05,649 INFO L933 BasicCegarLoop]: 2779 mSDtfsCounter, 2753 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2753 SdHoareTripleChecker+Valid, 2779 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 [2022-01-10 18:30:05,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2753 Valid, 2779 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:05,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:05,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:05,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.4476940382452193) internal successors, (5148), 3556 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:05,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 5148 transitions. [2022-01-10 18:30:05,772 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 5148 transitions. Word has length 171 [2022-01-10 18:30:05,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:05,772 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 5148 transitions. [2022-01-10 18:30:05,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:05,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 5148 transitions. [2022-01-10 18:30:05,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:05,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:05,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:05,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:30:05,774 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:05,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:05,774 INFO L85 PathProgramCache]: Analyzing trace with hash 345988489, now seen corresponding path program 1 times [2022-01-10 18:30:05,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:05,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018149192] [2022-01-10 18:30:05,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:05,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:05,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:05,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018149192] [2022-01-10 18:30:05,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018149192] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:05,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:05,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:05,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199020060] [2022-01-10 18:30:05,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:05,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:05,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:05,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:05,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:05,848 INFO L87 Difference]: Start difference. First operand 3557 states and 5148 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:05,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:05,979 INFO L93 Difference]: Finished difference Result 7081 states and 10246 transitions. [2022-01-10 18:30:05,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:05,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:05,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:05,985 INFO L225 Difference]: With dead ends: 7081 [2022-01-10 18:30:05,986 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:05,990 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 [2022-01-10 18:30:05,991 INFO L933 BasicCegarLoop]: 2774 mSDtfsCounter, 2747 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2747 SdHoareTripleChecker+Valid, 2774 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 [2022-01-10 18:30:05,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2747 Valid, 2774 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:05,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:06,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:06,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.4454443194600675) internal successors, (5140), 3556 states have internal predecessors, (5140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:06,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 5140 transitions. [2022-01-10 18:30:06,114 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 5140 transitions. Word has length 171 [2022-01-10 18:30:06,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:06,114 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 5140 transitions. [2022-01-10 18:30:06,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:06,115 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 5140 transitions. [2022-01-10 18:30:06,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:06,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:06,116 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:06,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:30:06,116 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:06,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:06,116 INFO L85 PathProgramCache]: Analyzing trace with hash 413667595, now seen corresponding path program 1 times [2022-01-10 18:30:06,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:06,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886144223] [2022-01-10 18:30:06,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:06,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:06,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:06,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886144223] [2022-01-10 18:30:06,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886144223] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:06,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:06,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:06,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558986785] [2022-01-10 18:30:06,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:06,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:06,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:06,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:06,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:06,159 INFO L87 Difference]: Start difference. First operand 3557 states and 5140 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:06,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:06,359 INFO L93 Difference]: Finished difference Result 7080 states and 10229 transitions. [2022-01-10 18:30:06,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:06,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:06,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:06,366 INFO L225 Difference]: With dead ends: 7080 [2022-01-10 18:30:06,366 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:06,372 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 [2022-01-10 18:30:06,373 INFO L933 BasicCegarLoop]: 2739 mSDtfsCounter, 2584 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2584 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:06,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2584 Valid, 2877 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:06,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:06,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:06,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.4353205849268842) internal successors, (5104), 3556 states have internal predecessors, (5104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:06,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 5104 transitions. [2022-01-10 18:30:06,552 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 5104 transitions. Word has length 171 [2022-01-10 18:30:06,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:06,552 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 5104 transitions. [2022-01-10 18:30:06,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:06,552 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 5104 transitions. [2022-01-10 18:30:06,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:06,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:06,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:06,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:30:06,554 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:06,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:06,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1028472554, now seen corresponding path program 1 times [2022-01-10 18:30:06,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:06,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205846426] [2022-01-10 18:30:06,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:06,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:06,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:06,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:06,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205846426] [2022-01-10 18:30:06,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205846426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:06,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:06,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:06,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229499262] [2022-01-10 18:30:06,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:06,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:06,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:06,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:06,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:06,601 INFO L87 Difference]: Start difference. First operand 3557 states and 5104 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:06,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:06,762 INFO L93 Difference]: Finished difference Result 7079 states and 10156 transitions. [2022-01-10 18:30:06,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:06,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:06,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:06,769 INFO L225 Difference]: With dead ends: 7079 [2022-01-10 18:30:06,769 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:06,774 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 [2022-01-10 18:30:06,774 INFO L933 BasicCegarLoop]: 2719 mSDtfsCounter, 2564 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2564 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:06,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2564 Valid, 2856 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:06,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:06,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:06,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.4251968503937007) internal successors, (5068), 3556 states have internal predecessors, (5068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:06,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 5068 transitions. [2022-01-10 18:30:06,942 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 5068 transitions. Word has length 171 [2022-01-10 18:30:06,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:06,942 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 5068 transitions. [2022-01-10 18:30:06,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:06,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 5068 transitions. [2022-01-10 18:30:06,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:06,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:06,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:06,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:30:06,943 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:06,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:06,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1869369677, now seen corresponding path program 1 times [2022-01-10 18:30:06,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:06,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307924135] [2022-01-10 18:30:06,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:06,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:06,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:06,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:06,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307924135] [2022-01-10 18:30:06,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307924135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:06,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:06,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:06,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863100145] [2022-01-10 18:30:06,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:06,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:06,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:06,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:06,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:06,984 INFO L87 Difference]: Start difference. First operand 3557 states and 5068 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:07,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:07,130 INFO L93 Difference]: Finished difference Result 7078 states and 10083 transitions. [2022-01-10 18:30:07,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:07,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:07,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:07,136 INFO L225 Difference]: With dead ends: 7078 [2022-01-10 18:30:07,137 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:07,142 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 [2022-01-10 18:30:07,143 INFO L933 BasicCegarLoop]: 2699 mSDtfsCounter, 2544 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2544 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:07,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2544 Valid, 2835 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:07,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:07,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:07,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.4150731158605174) internal successors, (5032), 3556 states have internal predecessors, (5032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:07,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 5032 transitions. [2022-01-10 18:30:07,267 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 5032 transitions. Word has length 171 [2022-01-10 18:30:07,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:07,267 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 5032 transitions. [2022-01-10 18:30:07,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:07,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 5032 transitions. [2022-01-10 18:30:07,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:07,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:07,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:07,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:30:07,269 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:07,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:07,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1818107948, now seen corresponding path program 1 times [2022-01-10 18:30:07,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:07,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85380938] [2022-01-10 18:30:07,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:07,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:07,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:07,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:07,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85380938] [2022-01-10 18:30:07,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85380938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:07,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:07,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:07,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825746121] [2022-01-10 18:30:07,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:07,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:07,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:07,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:07,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:07,313 INFO L87 Difference]: Start difference. First operand 3557 states and 5032 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:07,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:07,528 INFO L93 Difference]: Finished difference Result 7076 states and 10008 transitions. [2022-01-10 18:30:07,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:07,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:07,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:07,534 INFO L225 Difference]: With dead ends: 7076 [2022-01-10 18:30:07,534 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:07,537 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 [2022-01-10 18:30:07,537 INFO L933 BasicCegarLoop]: 2679 mSDtfsCounter, 2523 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2523 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:07,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2523 Valid, 2814 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:07,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:07,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:07,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.4049493813273342) internal successors, (4996), 3556 states have internal predecessors, (4996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 4996 transitions. [2022-01-10 18:30:07,660 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 4996 transitions. Word has length 171 [2022-01-10 18:30:07,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:07,660 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 4996 transitions. [2022-01-10 18:30:07,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:07,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 4996 transitions. [2022-01-10 18:30:07,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:07,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:07,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:07,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:30:07,662 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:07,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:07,662 INFO L85 PathProgramCache]: Analyzing trace with hash -574181365, now seen corresponding path program 1 times [2022-01-10 18:30:07,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:07,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037750345] [2022-01-10 18:30:07,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:07,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:07,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:07,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:07,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037750345] [2022-01-10 18:30:07,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037750345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:07,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:07,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:07,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505712999] [2022-01-10 18:30:07,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:07,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:07,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:07,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:07,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:07,712 INFO L87 Difference]: Start difference. First operand 3557 states and 4996 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:07,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:07,868 INFO L93 Difference]: Finished difference Result 7075 states and 9935 transitions. [2022-01-10 18:30:07,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:07,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:07,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:07,874 INFO L225 Difference]: With dead ends: 7075 [2022-01-10 18:30:07,874 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:07,878 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 [2022-01-10 18:30:07,878 INFO L933 BasicCegarLoop]: 2659 mSDtfsCounter, 2503 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2503 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:07,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2503 Valid, 2793 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:07,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:08,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:08,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.3948256467941507) internal successors, (4960), 3556 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:08,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 4960 transitions. [2022-01-10 18:30:08,038 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 4960 transitions. Word has length 171 [2022-01-10 18:30:08,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:08,038 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 4960 transitions. [2022-01-10 18:30:08,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:08,039 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 4960 transitions. [2022-01-10 18:30:08,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:08,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:08,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:08,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:30:08,040 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:08,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:08,041 INFO L85 PathProgramCache]: Analyzing trace with hash 882763374, now seen corresponding path program 1 times [2022-01-10 18:30:08,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:08,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140738813] [2022-01-10 18:30:08,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:08,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:08,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:08,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140738813] [2022-01-10 18:30:08,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140738813] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:08,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:08,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:08,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924235265] [2022-01-10 18:30:08,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:08,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:08,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:08,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:08,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:08,081 INFO L87 Difference]: Start difference. First operand 3557 states and 4960 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:08,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:08,262 INFO L93 Difference]: Finished difference Result 7074 states and 9862 transitions. [2022-01-10 18:30:08,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:08,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:08,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:08,269 INFO L225 Difference]: With dead ends: 7074 [2022-01-10 18:30:08,269 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:08,273 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 [2022-01-10 18:30:08,273 INFO L933 BasicCegarLoop]: 2639 mSDtfsCounter, 2483 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2483 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:08,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2483 Valid, 2772 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:08,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:08,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:08,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.3847019122609674) internal successors, (4924), 3556 states have internal predecessors, (4924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:08,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 4924 transitions. [2022-01-10 18:30:08,422 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 4924 transitions. Word has length 171 [2022-01-10 18:30:08,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:08,423 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 4924 transitions. [2022-01-10 18:30:08,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:08,423 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 4924 transitions. [2022-01-10 18:30:08,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:08,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:08,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:08,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:30:08,424 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:08,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:08,425 INFO L85 PathProgramCache]: Analyzing trace with hash 343889741, now seen corresponding path program 1 times [2022-01-10 18:30:08,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:08,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037361506] [2022-01-10 18:30:08,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:08,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:08,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:08,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:08,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037361506] [2022-01-10 18:30:08,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037361506] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:08,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:08,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:08,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390460341] [2022-01-10 18:30:08,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:08,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:08,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:08,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:08,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:08,459 INFO L87 Difference]: Start difference. First operand 3557 states and 4924 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:08,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:08,684 INFO L93 Difference]: Finished difference Result 7073 states and 9789 transitions. [2022-01-10 18:30:08,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:08,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:08,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:08,690 INFO L225 Difference]: With dead ends: 7073 [2022-01-10 18:30:08,690 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:08,693 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 [2022-01-10 18:30:08,693 INFO L933 BasicCegarLoop]: 2619 mSDtfsCounter, 2463 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2463 SdHoareTripleChecker+Valid, 2751 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:08,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2463 Valid, 2751 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:08,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:08,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:08,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.3745781777277841) internal successors, (4888), 3556 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:08,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 4888 transitions. [2022-01-10 18:30:08,868 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 4888 transitions. Word has length 171 [2022-01-10 18:30:08,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:08,868 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 4888 transitions. [2022-01-10 18:30:08,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:08,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 4888 transitions. [2022-01-10 18:30:08,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:08,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:08,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:08,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 18:30:08,870 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:08,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:08,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2069901232, now seen corresponding path program 1 times [2022-01-10 18:30:08,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:08,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733830521] [2022-01-10 18:30:08,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:08,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:08,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:08,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:08,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733830521] [2022-01-10 18:30:08,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733830521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:08,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:08,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:08,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310389450] [2022-01-10 18:30:08,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:08,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:08,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:08,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:08,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:08,908 INFO L87 Difference]: Start difference. First operand 3557 states and 4888 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:09,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:09,118 INFO L93 Difference]: Finished difference Result 7072 states and 9716 transitions. [2022-01-10 18:30:09,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:09,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:09,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:09,125 INFO L225 Difference]: With dead ends: 7072 [2022-01-10 18:30:09,125 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:09,130 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 [2022-01-10 18:30:09,130 INFO L933 BasicCegarLoop]: 2599 mSDtfsCounter, 2443 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2443 SdHoareTripleChecker+Valid, 2730 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:09,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2443 Valid, 2730 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:09,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:09,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:09,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.3644544431946006) internal successors, (4852), 3556 states have internal predecessors, (4852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:09,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 4852 transitions. [2022-01-10 18:30:09,277 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 4852 transitions. Word has length 171 [2022-01-10 18:30:09,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:09,277 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 4852 transitions. [2022-01-10 18:30:09,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:09,277 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 4852 transitions. [2022-01-10 18:30:09,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:09,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:09,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:09,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 18:30:09,278 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:09,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:09,279 INFO L85 PathProgramCache]: Analyzing trace with hash -275471985, now seen corresponding path program 1 times [2022-01-10 18:30:09,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:09,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877044659] [2022-01-10 18:30:09,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:09,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:09,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:09,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:09,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877044659] [2022-01-10 18:30:09,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877044659] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:09,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:09,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:09,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605555711] [2022-01-10 18:30:09,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:09,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:09,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:09,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:09,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:09,313 INFO L87 Difference]: Start difference. First operand 3557 states and 4852 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:09,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:09,494 INFO L93 Difference]: Finished difference Result 7071 states and 9643 transitions. [2022-01-10 18:30:09,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:09,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:09,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:09,498 INFO L225 Difference]: With dead ends: 7071 [2022-01-10 18:30:09,499 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:09,501 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 [2022-01-10 18:30:09,502 INFO L933 BasicCegarLoop]: 2579 mSDtfsCounter, 2423 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 2709 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:09,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2423 Valid, 2709 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:09,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:09,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:09,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.3543307086614174) internal successors, (4816), 3556 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:09,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 4816 transitions. [2022-01-10 18:30:09,630 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 4816 transitions. Word has length 171 [2022-01-10 18:30:09,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:09,630 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 4816 transitions. [2022-01-10 18:30:09,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:09,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 4816 transitions. [2022-01-10 18:30:09,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:09,631 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:09,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:09,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 18:30:09,632 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:09,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:09,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1988264974, now seen corresponding path program 1 times [2022-01-10 18:30:09,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:09,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44106028] [2022-01-10 18:30:09,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:09,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:09,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:09,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:09,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44106028] [2022-01-10 18:30:09,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44106028] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:09,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:09,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:09,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761885393] [2022-01-10 18:30:09,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:09,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:09,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:09,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:09,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:09,667 INFO L87 Difference]: Start difference. First operand 3557 states and 4816 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:09,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:09,821 INFO L93 Difference]: Finished difference Result 7070 states and 9570 transitions. [2022-01-10 18:30:09,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:09,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:09,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:09,827 INFO L225 Difference]: With dead ends: 7070 [2022-01-10 18:30:09,827 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:09,830 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 [2022-01-10 18:30:09,831 INFO L933 BasicCegarLoop]: 2559 mSDtfsCounter, 2403 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2403 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:09,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2403 Valid, 2688 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:09,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:09,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:09,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.3442069741282339) internal successors, (4780), 3556 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:09,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 4780 transitions. [2022-01-10 18:30:09,967 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 4780 transitions. Word has length 171 [2022-01-10 18:30:09,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:09,968 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 4780 transitions. [2022-01-10 18:30:09,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:09,968 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 4780 transitions. [2022-01-10 18:30:09,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:09,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:09,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:09,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 18:30:09,969 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:09,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:09,969 INFO L85 PathProgramCache]: Analyzing trace with hash 834080465, now seen corresponding path program 1 times [2022-01-10 18:30:09,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:09,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647057016] [2022-01-10 18:30:09,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:09,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:10,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:10,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:10,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647057016] [2022-01-10 18:30:10,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647057016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:10,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:10,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:10,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151393943] [2022-01-10 18:30:10,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:10,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:10,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:10,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:10,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:10,009 INFO L87 Difference]: Start difference. First operand 3557 states and 4780 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:10,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:10,198 INFO L93 Difference]: Finished difference Result 7068 states and 9495 transitions. [2022-01-10 18:30:10,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:10,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:10,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:10,203 INFO L225 Difference]: With dead ends: 7068 [2022-01-10 18:30:10,203 INFO L226 Difference]: Without dead ends: 3557 [2022-01-10 18:30:10,206 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 [2022-01-10 18:30:10,206 INFO L933 BasicCegarLoop]: 2539 mSDtfsCounter, 2382 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2382 SdHoareTripleChecker+Valid, 2667 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:10,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2382 Valid, 2667 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:10,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3557 states. [2022-01-10 18:30:10,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3557 to 3557. [2022-01-10 18:30:10,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3556 states have (on average 1.3340832395950506) internal successors, (4744), 3556 states have internal predecessors, (4744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:10,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 4744 transitions. [2022-01-10 18:30:10,342 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 4744 transitions. Word has length 171 [2022-01-10 18:30:10,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:10,343 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 4744 transitions. [2022-01-10 18:30:10,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:10,343 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 4744 transitions. [2022-01-10 18:30:10,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:10,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:10,343 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:10,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 18:30:10,344 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:10,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:10,344 INFO L85 PathProgramCache]: Analyzing trace with hash -176168272, now seen corresponding path program 1 times [2022-01-10 18:30:10,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:10,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268059607] [2022-01-10 18:30:10,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:10,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:10,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:10,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268059607] [2022-01-10 18:30:10,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268059607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:10,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:10,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:30:10,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460246026] [2022-01-10 18:30:10,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:10,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:30:10,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:10,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:30:10,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:30:10,409 INFO L87 Difference]: Start difference. First operand 3557 states and 4744 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) [2022-01-10 18:30:10,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:10,772 INFO L93 Difference]: Finished difference Result 8248 states and 11076 transitions. [2022-01-10 18:30:10,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:30:10,772 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 171 [2022-01-10 18:30:10,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:10,778 INFO L225 Difference]: With dead ends: 8248 [2022-01-10 18:30:10,778 INFO L226 Difference]: Without dead ends: 4751 [2022-01-10 18:30:10,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:30:10,783 INFO L933 BasicCegarLoop]: 2723 mSDtfsCounter, 7192 mSDsluCounter, 2541 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7192 SdHoareTripleChecker+Valid, 5264 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:10,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7192 Valid, 5264 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:30:10,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4751 states. [2022-01-10 18:30:10,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4751 to 3563. [2022-01-10 18:30:10,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3563 states, 3562 states have (on average 1.325659741718136) internal successors, (4722), 3562 states have internal predecessors, (4722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:10,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3563 states to 3563 states and 4722 transitions. [2022-01-10 18:30:11,000 INFO L78 Accepts]: Start accepts. Automaton has 3563 states and 4722 transitions. Word has length 171 [2022-01-10 18:30:11,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:11,000 INFO L470 AbstractCegarLoop]: Abstraction has 3563 states and 4722 transitions. [2022-01-10 18:30:11,000 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) [2022-01-10 18:30:11,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3563 states and 4722 transitions. [2022-01-10 18:30:11,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:11,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:11,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:11,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 18:30:11,001 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:11,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:11,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1322708785, now seen corresponding path program 1 times [2022-01-10 18:30:11,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:11,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933409821] [2022-01-10 18:30:11,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:11,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:11,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:11,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933409821] [2022-01-10 18:30:11,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933409821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:11,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:11,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:11,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778602111] [2022-01-10 18:30:11,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:11,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:11,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:11,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:11,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:11,045 INFO L87 Difference]: Start difference. First operand 3563 states and 4722 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:11,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:11,474 INFO L93 Difference]: Finished difference Result 10208 states and 13517 transitions. [2022-01-10 18:30:11,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:11,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:11,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:11,483 INFO L225 Difference]: With dead ends: 10208 [2022-01-10 18:30:11,483 INFO L226 Difference]: Without dead ends: 6721 [2022-01-10 18:30:11,489 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 [2022-01-10 18:30:11,489 INFO L933 BasicCegarLoop]: 2525 mSDtfsCounter, 2292 mSDsluCounter, 2285 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2292 SdHoareTripleChecker+Valid, 4810 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:11,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2292 Valid, 4810 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:30:11,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6721 states. [2022-01-10 18:30:11,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6721 to 6715. [2022-01-10 18:30:11,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6715 states, 6714 states have (on average 1.3199285075960678) internal successors, (8862), 6714 states have internal predecessors, (8862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:11,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6715 states to 6715 states and 8862 transitions. [2022-01-10 18:30:11,893 INFO L78 Accepts]: Start accepts. Automaton has 6715 states and 8862 transitions. Word has length 171 [2022-01-10 18:30:11,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:11,893 INFO L470 AbstractCegarLoop]: Abstraction has 6715 states and 8862 transitions. [2022-01-10 18:30:11,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:11,894 INFO L276 IsEmpty]: Start isEmpty. Operand 6715 states and 8862 transitions. [2022-01-10 18:30:11,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:11,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:11,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:11,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 18:30:11,895 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:11,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:11,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1490403152, now seen corresponding path program 1 times [2022-01-10 18:30:11,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:11,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47886359] [2022-01-10 18:30:11,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:11,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:11,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:11,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:11,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47886359] [2022-01-10 18:30:11,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47886359] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:11,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:11,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:30:11,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838896513] [2022-01-10 18:30:11,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:11,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:30:11,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:11,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:30:11,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:30:11,952 INFO L87 Difference]: Start difference. First operand 6715 states and 8862 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) [2022-01-10 18:30:12,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:12,668 INFO L93 Difference]: Finished difference Result 17282 states and 22905 transitions. [2022-01-10 18:30:12,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:30:12,669 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 171 [2022-01-10 18:30:12,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:12,684 INFO L225 Difference]: With dead ends: 17282 [2022-01-10 18:30:12,684 INFO L226 Difference]: Without dead ends: 10661 [2022-01-10 18:30:12,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:30:12,694 INFO L933 BasicCegarLoop]: 2547 mSDtfsCounter, 6332 mSDsluCounter, 3779 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6332 SdHoareTripleChecker+Valid, 6326 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:12,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6332 Valid, 6326 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:30:12,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10661 states. [2022-01-10 18:30:13,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10661 to 6727. [2022-01-10 18:30:13,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6727 states, 6726 states have (on average 1.3114778471602735) internal successors, (8821), 6726 states have internal predecessors, (8821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:13,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6727 states to 6727 states and 8821 transitions. [2022-01-10 18:30:13,132 INFO L78 Accepts]: Start accepts. Automaton has 6727 states and 8821 transitions. Word has length 171 [2022-01-10 18:30:13,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:13,132 INFO L470 AbstractCegarLoop]: Abstraction has 6727 states and 8821 transitions. [2022-01-10 18:30:13,132 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) [2022-01-10 18:30:13,133 INFO L276 IsEmpty]: Start isEmpty. Operand 6727 states and 8821 transitions. [2022-01-10 18:30:13,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:13,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:13,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:13,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 18:30:13,133 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:13,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:13,134 INFO L85 PathProgramCache]: Analyzing trace with hash -282484977, now seen corresponding path program 1 times [2022-01-10 18:30:13,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:13,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718915614] [2022-01-10 18:30:13,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:13,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:13,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:13,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718915614] [2022-01-10 18:30:13,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718915614] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:13,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:13,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:13,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922191843] [2022-01-10 18:30:13,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:13,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:13,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:13,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:13,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:13,207 INFO L87 Difference]: Start difference. First operand 6727 states and 8821 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:13,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:13,949 INFO L93 Difference]: Finished difference Result 19419 states and 25442 transitions. [2022-01-10 18:30:13,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:13,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:13,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:13,967 INFO L225 Difference]: With dead ends: 19419 [2022-01-10 18:30:13,967 INFO L226 Difference]: Without dead ends: 12823 [2022-01-10 18:30:13,974 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 [2022-01-10 18:30:13,975 INFO L933 BasicCegarLoop]: 2507 mSDtfsCounter, 2227 mSDsluCounter, 2271 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2227 SdHoareTripleChecker+Valid, 4778 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:13,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2227 Valid, 4778 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:30:13,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12823 states. [2022-01-10 18:30:14,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12823 to 12813. [2022-01-10 18:30:14,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12813 states, 12812 states have (on average 1.3054948485794569) internal successors, (16726), 12812 states have internal predecessors, (16726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:14,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12813 states to 12813 states and 16726 transitions. [2022-01-10 18:30:14,747 INFO L78 Accepts]: Start accepts. Automaton has 12813 states and 16726 transitions. Word has length 171 [2022-01-10 18:30:14,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:14,747 INFO L470 AbstractCegarLoop]: Abstraction has 12813 states and 16726 transitions. [2022-01-10 18:30:14,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:14,747 INFO L276 IsEmpty]: Start isEmpty. Operand 12813 states and 16726 transitions. [2022-01-10 18:30:14,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:14,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:14,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:14,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 18:30:14,748 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:14,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:14,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1541901072, now seen corresponding path program 1 times [2022-01-10 18:30:14,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:14,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34722465] [2022-01-10 18:30:14,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:14,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:14,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:14,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34722465] [2022-01-10 18:30:14,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34722465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:14,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:14,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:14,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177594829] [2022-01-10 18:30:14,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:14,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:14,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:14,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:14,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:14,796 INFO L87 Difference]: Start difference. First operand 12813 states and 16726 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:15,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:15,589 INFO L93 Difference]: Finished difference Result 25605 states and 33416 transitions. [2022-01-10 18:30:15,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:15,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:15,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:15,606 INFO L225 Difference]: With dead ends: 25605 [2022-01-10 18:30:15,606 INFO L226 Difference]: Without dead ends: 12813 [2022-01-10 18:30:15,616 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 [2022-01-10 18:30:15,616 INFO L933 BasicCegarLoop]: 2513 mSDtfsCounter, 2386 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2386 SdHoareTripleChecker+Valid, 2513 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 [2022-01-10 18:30:15,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2386 Valid, 2513 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:15,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12813 states. [2022-01-10 18:30:16,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12813 to 12813. [2022-01-10 18:30:16,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12813 states, 12812 states have (on average 1.3034655010927256) internal successors, (16700), 12812 states have internal predecessors, (16700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:16,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12813 states to 12813 states and 16700 transitions. [2022-01-10 18:30:16,463 INFO L78 Accepts]: Start accepts. Automaton has 12813 states and 16700 transitions. Word has length 171 [2022-01-10 18:30:16,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:16,463 INFO L470 AbstractCegarLoop]: Abstraction has 12813 states and 16700 transitions. [2022-01-10 18:30:16,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:16,463 INFO L276 IsEmpty]: Start isEmpty. Operand 12813 states and 16700 transitions. [2022-01-10 18:30:16,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:16,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:16,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:16,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 18:30:16,464 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:16,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:16,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1830382641, now seen corresponding path program 1 times [2022-01-10 18:30:16,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:16,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123328704] [2022-01-10 18:30:16,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:16,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:16,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:16,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:16,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123328704] [2022-01-10 18:30:16,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123328704] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:16,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:16,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:16,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139878500] [2022-01-10 18:30:16,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:16,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:16,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:16,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:16,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:16,507 INFO L87 Difference]: Start difference. First operand 12813 states and 16700 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:17,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:17,235 INFO L93 Difference]: Finished difference Result 25597 states and 33356 transitions. [2022-01-10 18:30:17,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:17,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:17,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:17,255 INFO L225 Difference]: With dead ends: 25597 [2022-01-10 18:30:17,255 INFO L226 Difference]: Without dead ends: 12813 [2022-01-10 18:30:17,269 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 [2022-01-10 18:30:17,270 INFO L933 BasicCegarLoop]: 2508 mSDtfsCounter, 2373 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2373 SdHoareTripleChecker+Valid, 2508 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 [2022-01-10 18:30:17,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2373 Valid, 2508 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:17,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12813 states. [2022-01-10 18:30:18,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12813 to 12813. [2022-01-10 18:30:18,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12813 states, 12812 states have (on average 1.3014361536059944) internal successors, (16674), 12812 states have internal predecessors, (16674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:18,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12813 states to 12813 states and 16674 transitions. [2022-01-10 18:30:18,045 INFO L78 Accepts]: Start accepts. Automaton has 12813 states and 16674 transitions. Word has length 171 [2022-01-10 18:30:18,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:18,045 INFO L470 AbstractCegarLoop]: Abstraction has 12813 states and 16674 transitions. [2022-01-10 18:30:18,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:18,045 INFO L276 IsEmpty]: Start isEmpty. Operand 12813 states and 16674 transitions. [2022-01-10 18:30:18,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:18,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:18,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:18,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 18:30:18,047 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:18,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:18,047 INFO L85 PathProgramCache]: Analyzing trace with hash -2113784718, now seen corresponding path program 1 times [2022-01-10 18:30:18,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:18,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160696750] [2022-01-10 18:30:18,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:18,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:18,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:18,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:18,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160696750] [2022-01-10 18:30:18,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160696750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:18,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:18,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:18,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394854988] [2022-01-10 18:30:18,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:18,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:18,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:18,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:18,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:18,094 INFO L87 Difference]: Start difference. First operand 12813 states and 16674 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:18,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:18,823 INFO L93 Difference]: Finished difference Result 25589 states and 33296 transitions. [2022-01-10 18:30:18,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:18,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:18,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:18,841 INFO L225 Difference]: With dead ends: 25589 [2022-01-10 18:30:18,841 INFO L226 Difference]: Without dead ends: 12813 [2022-01-10 18:30:18,855 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 [2022-01-10 18:30:18,855 INFO L933 BasicCegarLoop]: 2475 mSDtfsCounter, 2217 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2217 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:18,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2217 Valid, 2600 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:18,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12813 states. [2022-01-10 18:30:19,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12813 to 12813. [2022-01-10 18:30:19,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12813 states, 12812 states have (on average 1.2953481111458007) internal successors, (16596), 12812 states have internal predecessors, (16596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:19,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12813 states to 12813 states and 16596 transitions. [2022-01-10 18:30:19,673 INFO L78 Accepts]: Start accepts. Automaton has 12813 states and 16596 transitions. Word has length 171 [2022-01-10 18:30:19,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:19,673 INFO L470 AbstractCegarLoop]: Abstraction has 12813 states and 16596 transitions. [2022-01-10 18:30:19,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:19,674 INFO L276 IsEmpty]: Start isEmpty. Operand 12813 states and 16596 transitions. [2022-01-10 18:30:19,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:19,674 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:19,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:19,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-10 18:30:19,674 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:19,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:19,675 INFO L85 PathProgramCache]: Analyzing trace with hash -869020237, now seen corresponding path program 1 times [2022-01-10 18:30:19,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:19,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440012067] [2022-01-10 18:30:19,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:19,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:19,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:19,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:19,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440012067] [2022-01-10 18:30:19,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440012067] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:19,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:19,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:30:19,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356397942] [2022-01-10 18:30:19,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:19,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:19,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:19,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:19,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:19,728 INFO L87 Difference]: Start difference. First operand 12813 states and 16596 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:20,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:20,518 INFO L93 Difference]: Finished difference Result 25581 states and 33132 transitions. [2022-01-10 18:30:20,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:20,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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 171 [2022-01-10 18:30:20,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:20,534 INFO L225 Difference]: With dead ends: 25581 [2022-01-10 18:30:20,534 INFO L226 Difference]: Without dead ends: 12813 [2022-01-10 18:30:20,544 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 [2022-01-10 18:30:20,544 INFO L933 BasicCegarLoop]: 2456 mSDtfsCounter, 2191 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2191 SdHoareTripleChecker+Valid, 2580 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:20,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2191 Valid, 2580 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:30:20,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12813 states. [2022-01-10 18:30:21,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12813 to 12813. [2022-01-10 18:30:21,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12813 states, 12812 states have (on average 1.2892600686856073) internal successors, (16518), 12812 states have internal predecessors, (16518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:21,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12813 states to 12813 states and 16518 transitions. [2022-01-10 18:30:21,375 INFO L78 Accepts]: Start accepts. Automaton has 12813 states and 16518 transitions. Word has length 171 [2022-01-10 18:30:21,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:21,375 INFO L470 AbstractCegarLoop]: Abstraction has 12813 states and 16518 transitions. [2022-01-10 18:30:21,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 2 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) [2022-01-10 18:30:21,375 INFO L276 IsEmpty]: Start isEmpty. Operand 12813 states and 16518 transitions. [2022-01-10 18:30:21,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-01-10 18:30:21,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:21,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:21,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-10 18:30:21,376 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:21,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:21,377 INFO L85 PathProgramCache]: Analyzing trace with hash 638531572, now seen corresponding path program 1 times [2022-01-10 18:30:21,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:21,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282715741] [2022-01-10 18:30:21,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:21,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:21,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:21,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:21,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282715741] [2022-01-10 18:30:21,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282715741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:21,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:21,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:30:21,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126087225] [2022-01-10 18:30:21,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:21,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:30:21,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:21,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:30:21,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:21,450 INFO L87 Difference]: Start difference. First operand 12813 states and 16518 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 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) [2022-01-10 18:30:23,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:23,087 INFO L93 Difference]: Finished difference Result 37855 states and 48575 transitions. [2022-01-10 18:30:23,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:30:23,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 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 171 [2022-01-10 18:30:23,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:23,132 INFO L225 Difference]: With dead ends: 37855 [2022-01-10 18:30:23,132 INFO L226 Difference]: Without dead ends: 25213 [2022-01-10 18:30:23,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:30:23,150 INFO L933 BasicCegarLoop]: 2473 mSDtfsCounter, 2242 mSDsluCounter, 2442 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 4915 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:23,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2242 Valid, 4915 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:30:23,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25213 states. [2022-01-10 18:30:24,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25213 to 24435. [2022-01-10 18:30:24,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24435 states, 24434 states have (on average 1.2792420397806334) internal successors, (31257), 24434 states have internal predecessors, (31257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:24,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24435 states to 24435 states and 31257 transitions. [2022-01-10 18:30:24,674 INFO L78 Accepts]: Start accepts. Automaton has 24435 states and 31257 transitions. Word has length 171 [2022-01-10 18:30:24,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:24,675 INFO L470 AbstractCegarLoop]: Abstraction has 24435 states and 31257 transitions. [2022-01-10 18:30:24,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 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) [2022-01-10 18:30:24,675 INFO L276 IsEmpty]: Start isEmpty. Operand 24435 states and 31257 transitions. [2022-01-10 18:30:24,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-10 18:30:24,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:24,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:24,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-10 18:30:24,676 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:24,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:24,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1681312824, now seen corresponding path program 1 times [2022-01-10 18:30:24,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:24,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628270066] [2022-01-10 18:30:24,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:24,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:24,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:24,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628270066] [2022-01-10 18:30:24,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628270066] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:24,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:24,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:30:24,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872014382] [2022-01-10 18:30:24,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:24,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:30:24,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:24,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:30:24,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:30:24,738 INFO L87 Difference]: Start difference. First operand 24435 states and 31257 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:28,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:28,016 INFO L93 Difference]: Finished difference Result 70641 states and 90496 transitions. [2022-01-10 18:30:28,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:30:28,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2022-01-10 18:30:28,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:28,080 INFO L225 Difference]: With dead ends: 70641 [2022-01-10 18:30:28,081 INFO L226 Difference]: Without dead ends: 46425 [2022-01-10 18:30:28,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:30:28,098 INFO L933 BasicCegarLoop]: 2723 mSDtfsCounter, 8832 mSDsluCounter, 10588 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8832 SdHoareTripleChecker+Valid, 13311 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:28,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8832 Valid, 13311 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:30:28,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46425 states. [2022-01-10 18:30:30,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46425 to 24759. [2022-01-10 18:30:30,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24759 states, 24758 states have (on average 1.2714678083851685) internal successors, (31479), 24758 states have internal predecessors, (31479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:30,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24759 states to 24759 states and 31479 transitions. [2022-01-10 18:30:30,097 INFO L78 Accepts]: Start accepts. Automaton has 24759 states and 31479 transitions. Word has length 172 [2022-01-10 18:30:30,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:30,098 INFO L470 AbstractCegarLoop]: Abstraction has 24759 states and 31479 transitions. [2022-01-10 18:30:30,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:30,098 INFO L276 IsEmpty]: Start isEmpty. Operand 24759 states and 31479 transitions. [2022-01-10 18:30:30,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-10 18:30:30,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:30,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:30,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-10 18:30:30,099 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:30,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:30,099 INFO L85 PathProgramCache]: Analyzing trace with hash 710194377, now seen corresponding path program 1 times [2022-01-10 18:30:30,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:30,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778025883] [2022-01-10 18:30:30,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:30,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:30,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:30,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:30,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778025883] [2022-01-10 18:30:30,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778025883] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:30,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:30,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:30:30,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039525947] [2022-01-10 18:30:30,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:30,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:30:30,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:30,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:30:30,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:30:30,147 INFO L87 Difference]: Start difference. First operand 24759 states and 31479 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:33,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:33,412 INFO L93 Difference]: Finished difference Result 60879 states and 77838 transitions. [2022-01-10 18:30:33,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:30:33,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2022-01-10 18:30:33,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:33,461 INFO L225 Difference]: With dead ends: 60879 [2022-01-10 18:30:33,461 INFO L226 Difference]: Without dead ends: 36263 [2022-01-10 18:30:33,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:30:33,481 INFO L933 BasicCegarLoop]: 2596 mSDtfsCounter, 6639 mSDsluCounter, 3192 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6639 SdHoareTripleChecker+Valid, 5788 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:33,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6639 Valid, 5788 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:30:33,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36263 states. [2022-01-10 18:30:35,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36263 to 24807. [2022-01-10 18:30:35,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24807 states, 24806 states have (on average 1.263121825364831) internal successors, (31333), 24806 states have internal predecessors, (31333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:35,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24807 states to 24807 states and 31333 transitions. [2022-01-10 18:30:35,690 INFO L78 Accepts]: Start accepts. Automaton has 24807 states and 31333 transitions. Word has length 172 [2022-01-10 18:30:35,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:35,690 INFO L470 AbstractCegarLoop]: Abstraction has 24807 states and 31333 transitions. [2022-01-10 18:30:35,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:35,690 INFO L276 IsEmpty]: Start isEmpty. Operand 24807 states and 31333 transitions. [2022-01-10 18:30:35,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-10 18:30:35,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:35,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:35,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-10 18:30:35,692 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:35,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:35,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1840981002, now seen corresponding path program 1 times [2022-01-10 18:30:35,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:35,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212633936] [2022-01-10 18:30:35,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:35,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:35,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:35,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:35,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212633936] [2022-01-10 18:30:35,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212633936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:35,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:35,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:30:35,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665724797] [2022-01-10 18:30:35,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:35,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:30:35,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:35,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:30:35,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:30:35,790 INFO L87 Difference]: Start difference. First operand 24807 states and 31333 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:38,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:38,880 INFO L93 Difference]: Finished difference Result 55991 states and 70914 transitions. [2022-01-10 18:30:38,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:30:38,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2022-01-10 18:30:38,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:38,944 INFO L225 Difference]: With dead ends: 55991 [2022-01-10 18:30:38,944 INFO L226 Difference]: Without dead ends: 31339 [2022-01-10 18:30:38,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:30:38,974 INFO L933 BasicCegarLoop]: 2396 mSDtfsCounter, 6537 mSDsluCounter, 3514 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6537 SdHoareTripleChecker+Valid, 5910 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:38,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6537 Valid, 5910 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:30:39,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31339 states. [2022-01-10 18:30:41,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31339 to 24831. [2022-01-10 18:30:41,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24831 states, 24830 states have (on average 1.2547321788159485) internal successors, (31155), 24830 states have internal predecessors, (31155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:41,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24831 states to 24831 states and 31155 transitions. [2022-01-10 18:30:41,811 INFO L78 Accepts]: Start accepts. Automaton has 24831 states and 31155 transitions. Word has length 172 [2022-01-10 18:30:41,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:41,811 INFO L470 AbstractCegarLoop]: Abstraction has 24831 states and 31155 transitions. [2022-01-10 18:30:41,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:41,812 INFO L276 IsEmpty]: Start isEmpty. Operand 24831 states and 31155 transitions. [2022-01-10 18:30:41,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-10 18:30:41,817 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:41,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:41,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-10 18:30:41,818 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:41,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:41,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1653450741, now seen corresponding path program 1 times [2022-01-10 18:30:41,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:41,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229936595] [2022-01-10 18:30:41,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:41,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:41,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:41,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:41,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229936595] [2022-01-10 18:30:41,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229936595] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:41,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:41,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:30:41,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259945334] [2022-01-10 18:30:41,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:41,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:30:41,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:41,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:30:41,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:30:41,885 INFO L87 Difference]: Start difference. First operand 24831 states and 31155 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:45,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:45,296 INFO L93 Difference]: Finished difference Result 56665 states and 71270 transitions. [2022-01-10 18:30:45,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:30:45,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2022-01-10 18:30:45,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:45,333 INFO L225 Difference]: With dead ends: 56665 [2022-01-10 18:30:45,333 INFO L226 Difference]: Without dead ends: 32003 [2022-01-10 18:30:45,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:30:45,348 INFO L933 BasicCegarLoop]: 2530 mSDtfsCounter, 6263 mSDsluCounter, 3844 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6263 SdHoareTripleChecker+Valid, 6374 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:45,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6263 Valid, 6374 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:30:45,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32003 states. [2022-01-10 18:30:47,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32003 to 24855. [2022-01-10 18:30:47,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24855 states, 24854 states have (on average 1.2463587350124727) internal successors, (30977), 24854 states have internal predecessors, (30977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:47,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24855 states to 24855 states and 30977 transitions. [2022-01-10 18:30:47,868 INFO L78 Accepts]: Start accepts. Automaton has 24855 states and 30977 transitions. Word has length 172 [2022-01-10 18:30:47,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:47,868 INFO L470 AbstractCegarLoop]: Abstraction has 24855 states and 30977 transitions. [2022-01-10 18:30:47,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:47,868 INFO L276 IsEmpty]: Start isEmpty. Operand 24855 states and 30977 transitions. [2022-01-10 18:30:47,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-10 18:30:47,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:47,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:47,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-10 18:30:47,869 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:47,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:47,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1671225548, now seen corresponding path program 1 times [2022-01-10 18:30:47,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:47,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062321034] [2022-01-10 18:30:47,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:47,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:47,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:47,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062321034] [2022-01-10 18:30:47,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062321034] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:47,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:47,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:30:47,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424994804] [2022-01-10 18:30:47,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:47,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:30:47,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:47,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:30:47,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:30:47,914 INFO L87 Difference]: Start difference. First operand 24855 states and 30977 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:52,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:52,149 INFO L93 Difference]: Finished difference Result 65785 states and 82134 transitions. [2022-01-10 18:30:52,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:30:52,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2022-01-10 18:30:52,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:52,197 INFO L225 Difference]: With dead ends: 65785 [2022-01-10 18:30:52,197 INFO L226 Difference]: Without dead ends: 41127 [2022-01-10 18:30:52,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:30:52,212 INFO L933 BasicCegarLoop]: 2481 mSDtfsCounter, 5926 mSDsluCounter, 4507 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5926 SdHoareTripleChecker+Valid, 6988 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:52,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5926 Valid, 6988 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:30:52,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41127 states. [2022-01-10 18:30:54,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41127 to 24903. [2022-01-10 18:30:54,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24903 states, 24902 states have (on average 1.2380933258372822) internal successors, (30831), 24902 states have internal predecessors, (30831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:54,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24903 states to 24903 states and 30831 transitions. [2022-01-10 18:30:54,892 INFO L78 Accepts]: Start accepts. Automaton has 24903 states and 30831 transitions. Word has length 172 [2022-01-10 18:30:54,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:30:54,893 INFO L470 AbstractCegarLoop]: Abstraction has 24903 states and 30831 transitions. [2022-01-10 18:30:54,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:54,893 INFO L276 IsEmpty]: Start isEmpty. Operand 24903 states and 30831 transitions. [2022-01-10 18:30:54,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-10 18:30:54,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:30:54,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:30:54,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-10 18:30:54,894 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:30:54,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:30:54,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1791345421, now seen corresponding path program 1 times [2022-01-10 18:30:54,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:30:54,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863766799] [2022-01-10 18:30:54,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:30:54,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:30:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:30:54,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:30:54,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:30:54,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863766799] [2022-01-10 18:30:54,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863766799] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:30:54,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:30:54,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:30:54,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331883466] [2022-01-10 18:30:54,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:30:54,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:30:54,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:30:54,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:30:54,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:30:54,936 INFO L87 Difference]: Start difference. First operand 24903 states and 30831 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:30:59,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:30:59,538 INFO L93 Difference]: Finished difference Result 67091 states and 83218 transitions. [2022-01-10 18:30:59,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 18:30:59,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2022-01-10 18:30:59,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:30:59,590 INFO L225 Difference]: With dead ends: 67091 [2022-01-10 18:30:59,590 INFO L226 Difference]: Without dead ends: 42399 [2022-01-10 18:30:59,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:30:59,615 INFO L933 BasicCegarLoop]: 2448 mSDtfsCounter, 5735 mSDsluCounter, 4836 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5735 SdHoareTripleChecker+Valid, 7284 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:30:59,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5735 Valid, 7284 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:30:59,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42399 states. [2022-01-10 18:31:02,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42399 to 24951. [2022-01-10 18:31:02,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24951 states, 24950 states have (on average 1.2298597194388778) internal successors, (30685), 24950 states have internal predecessors, (30685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:31:02,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24951 states to 24951 states and 30685 transitions. [2022-01-10 18:31:02,732 INFO L78 Accepts]: Start accepts. Automaton has 24951 states and 30685 transitions. Word has length 172 [2022-01-10 18:31:02,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:02,732 INFO L470 AbstractCegarLoop]: Abstraction has 24951 states and 30685 transitions. [2022-01-10 18:31:02,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:31:02,732 INFO L276 IsEmpty]: Start isEmpty. Operand 24951 states and 30685 transitions. [2022-01-10 18:31:02,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-10 18:31:02,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:02,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:02,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-10 18:31:02,741 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:31:02,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:02,742 INFO L85 PathProgramCache]: Analyzing trace with hash 835824142, now seen corresponding path program 1 times [2022-01-10 18:31:02,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:02,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524470862] [2022-01-10 18:31:02,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:02,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:02,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:31:02,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:02,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524470862] [2022-01-10 18:31:02,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524470862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:02,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:02,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:31:02,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423143080] [2022-01-10 18:31:02,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:02,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:31:02,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:02,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:31:02,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:02,860 INFO L87 Difference]: Start difference. First operand 24951 states and 30685 transitions. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)