/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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:57:06,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:57:06,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:57:06,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:57:06,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:57:06,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:57:06,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:57:06,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:57:06,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:57:06,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:57:06,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:57:06,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:57:06,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:57:06,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:57:06,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:57:06,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:57:06,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:57:06,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:57:06,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:57:06,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:57:06,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:57:06,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:57:06,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:57:06,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:57:06,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:57:06,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:57:06,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:57:06,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:57:06,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:57:06,640 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:57:06,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:57:06,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:57:06,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:57:06,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:57:06,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:57:06,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:57:06,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:57:06,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:57:06,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:57:06,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:57:06,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:57:06,648 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 18:57:06,675 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:57:06,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:57:06,675 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:57:06,675 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:57:06,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:57:06,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:57:06,676 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:57:06,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:57:06,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:57:06,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:57:06,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:57:06,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:57:06,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:57:06,677 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:57:06,677 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:57:06,677 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:57:06,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:57:06,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:57:06,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:57:06,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:57:06,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:57:06,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:57:06,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:57:06,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:57:06,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:57:06,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:57:06,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:57:06,678 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:57:06,678 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:57:06,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:57:06,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:57:06,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:57:06,681 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:57:06,681 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:57:06,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:57:06,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:57:06,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:57:06,930 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:57:06,935 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:57:06,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2022-01-10 18:57:06,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a11015003/09152b4127594d0b8148e71a31484588/FLAG19c68df73 [2022-01-10 18:57:07,320 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:57:07,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2022-01-10 18:57:07,328 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a11015003/09152b4127594d0b8148e71a31484588/FLAG19c68df73 [2022-01-10 18:57:07,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a11015003/09152b4127594d0b8148e71a31484588 [2022-01-10 18:57:07,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:57:07,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:57:07,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:57:07,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:57:07,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:57:07,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:57:07" (1/1) ... [2022-01-10 18:57:07,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46bd3b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:57:07, skipping insertion in model container [2022-01-10 18:57:07,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:57:07" (1/1) ... [2022-01-10 18:57:07,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:57:07,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:57:07,941 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[8607,8620] [2022-01-10 18:57:07,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:57:07,996 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:57:08,035 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[8607,8620] [2022-01-10 18:57:08,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:57:08,075 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:57:08,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:57:08 WrapperNode [2022-01-10 18:57:08,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:57:08,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:57:08,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:57:08,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:57:08,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:57:08" (1/1) ... [2022-01-10 18:57:08,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:57:08" (1/1) ... [2022-01-10 18:57:08,143 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 787 [2022-01-10 18:57:08,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:57:08,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:57:08,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:57:08,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:57:08,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:57:08" (1/1) ... [2022-01-10 18:57:08,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:57:08" (1/1) ... [2022-01-10 18:57:08,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:57:08" (1/1) ... [2022-01-10 18:57:08,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:57:08" (1/1) ... [2022-01-10 18:57:08,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:57:08" (1/1) ... [2022-01-10 18:57:08,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:57:08" (1/1) ... [2022-01-10 18:57:08,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:57:08" (1/1) ... [2022-01-10 18:57:08,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:57:08,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:57:08,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:57:08,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:57:08,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:57:08" (1/1) ... [2022-01-10 18:57:08,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:57:08,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:57:08,215 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 18:57:08,229 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 18:57:08,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:57:08,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:57:08,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:57:08,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:57:08,332 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:57:08,333 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:57:08,831 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:57:08,840 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:57:08,841 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 18:57:08,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:57:08 BoogieIcfgContainer [2022-01-10 18:57:08,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:57:08,843 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:57:08,843 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:57:08,844 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:57:08,846 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:57:08" (1/1) ... [2022-01-10 18:57:09,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:57:09 BasicIcfg [2022-01-10 18:57:09,299 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:57:09,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:57:09,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:57:09,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:57:09,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:57:07" (1/4) ... [2022-01-10 18:57:09,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4304b9b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:57:09, skipping insertion in model container [2022-01-10 18:57:09,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:57:08" (2/4) ... [2022-01-10 18:57:09,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4304b9b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:57:09, skipping insertion in model container [2022-01-10 18:57:09,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:57:08" (3/4) ... [2022-01-10 18:57:09,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4304b9b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:57:09, skipping insertion in model container [2022-01-10 18:57:09,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:57:09" (4/4) ... [2022-01-10 18:57:09,306 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-10 18:57:09,310 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:57:09,310 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:57:09,353 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:57:09,358 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 18:57:09,358 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:57:09,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 216 states, 214 states have (on average 1.719626168224299) internal successors, (368), 215 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 18:57:09,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 18:57:09,386 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:57:09,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:57:09,387 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:57:09,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:57:09,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1247106835, now seen corresponding path program 1 times [2022-01-10 18:57:09,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:57:09,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171970610] [2022-01-10 18:57:09,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:57:09,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:57:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:57:09,953 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 18:57:09,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:57:09,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171970610] [2022-01-10 18:57:09,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171970610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:57:09,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:57:09,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:57:09,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266358707] [2022-01-10 18:57:09,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:57:09,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:57:09,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:57:09,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:57:09,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:57:09,984 INFO L87 Difference]: Start difference. First operand has 216 states, 214 states have (on average 1.719626168224299) internal successors, (368), 215 states have internal predecessors, (368), 0 states have call successors, (0), 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 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:57:10,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:57:10,568 INFO L93 Difference]: Finished difference Result 437 states and 720 transitions. [2022-01-10 18:57:10,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:57:10,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 18:57:10,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:57:10,579 INFO L225 Difference]: With dead ends: 437 [2022-01-10 18:57:10,579 INFO L226 Difference]: Without dead ends: 329 [2022-01-10 18:57:10,584 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 18:57:10,589 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 180 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 18:57:10,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 689 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 18:57:10,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-01-10 18:57:10,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 327. [2022-01-10 18:57:10,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.5) internal successors, (489), 326 states have internal predecessors, (489), 0 states have call successors, (0), 0 states 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 18:57:10,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 489 transitions. [2022-01-10 18:57:10,678 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 489 transitions. Word has length 81 [2022-01-10 18:57:10,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:57:10,679 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 489 transitions. [2022-01-10 18:57:10,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:57:10,679 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 489 transitions. [2022-01-10 18:57:10,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 18:57:10,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:57:10,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:57:10,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:57:10,686 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:57:10,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:57:10,688 INFO L85 PathProgramCache]: Analyzing trace with hash 4620345, now seen corresponding path program 1 times [2022-01-10 18:57:10,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:57:10,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352260793] [2022-01-10 18:57:10,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:57:10,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:57:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:57:10,928 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 18:57:10,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:57:10,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352260793] [2022-01-10 18:57:10,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352260793] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:57:10,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:57:10,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:57:10,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193867241] [2022-01-10 18:57:10,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:57:10,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:57:10,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:57:10,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:57:10,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:57:10,932 INFO L87 Difference]: Start difference. First operand 327 states and 489 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:57:11,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:57:11,110 INFO L93 Difference]: Finished difference Result 543 states and 829 transitions. [2022-01-10 18:57:11,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:57:11,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 18:57:11,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:57:11,113 INFO L225 Difference]: With dead ends: 543 [2022-01-10 18:57:11,113 INFO L226 Difference]: Without dead ends: 541 [2022-01-10 18:57:11,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:57:11,117 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 449 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:57:11,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 858 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:57:11,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-01-10 18:57:11,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 329. [2022-01-10 18:57:11,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.4969512195121952) internal successors, (491), 328 states have internal predecessors, (491), 0 states have call successors, (0), 0 states 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 18:57:11,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 491 transitions. [2022-01-10 18:57:11,165 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 491 transitions. Word has length 82 [2022-01-10 18:57:11,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:57:11,166 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 491 transitions. [2022-01-10 18:57:11,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:57:11,167 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 491 transitions. [2022-01-10 18:57:11,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 18:57:11,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:57:11,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:57:11,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:57:11,172 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:57:11,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:57:11,176 INFO L85 PathProgramCache]: Analyzing trace with hash 144240816, now seen corresponding path program 1 times [2022-01-10 18:57:11,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:57:11,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355459079] [2022-01-10 18:57:11,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:57:11,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:57:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:57:11,428 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 18:57:11,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:57:11,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355459079] [2022-01-10 18:57:11,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355459079] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:57:11,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:57:11,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:57:11,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732995318] [2022-01-10 18:57:11,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:57:11,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:57:11,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:57:11,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:57:11,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:57:11,430 INFO L87 Difference]: Start difference. First operand 329 states and 491 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:57:12,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:57:12,401 INFO L93 Difference]: Finished difference Result 2604 states and 4061 transitions. [2022-01-10 18:57:12,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 18:57:12,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 18:57:12,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:57:12,408 INFO L225 Difference]: With dead ends: 2604 [2022-01-10 18:57:12,409 INFO L226 Difference]: Without dead ends: 2356 [2022-01-10 18:57:12,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-01-10 18:57:12,411 INFO L933 BasicCegarLoop]: 762 mSDtfsCounter, 2293 mSDsluCounter, 2376 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2293 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 18:57:12,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2293 Valid, 3138 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 18:57:12,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2356 states. [2022-01-10 18:57:12,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 1283. [2022-01-10 18:57:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 1282 states have (on average 1.547581903276131) internal successors, (1984), 1282 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states 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 18:57:12,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1984 transitions. [2022-01-10 18:57:12,594 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1984 transitions. Word has length 83 [2022-01-10 18:57:12,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:57:12,595 INFO L470 AbstractCegarLoop]: Abstraction has 1283 states and 1984 transitions. [2022-01-10 18:57:12,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:57:12,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1984 transitions. [2022-01-10 18:57:12,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 18:57:12,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:57:12,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:57:12,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:57:12,596 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:57:12,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:57:12,597 INFO L85 PathProgramCache]: Analyzing trace with hash 162355901, now seen corresponding path program 1 times [2022-01-10 18:57:12,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:57:12,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342846609] [2022-01-10 18:57:12,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:57:12,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:57:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:57:12,841 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 18:57:12,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:57:12,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342846609] [2022-01-10 18:57:12,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342846609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:57:12,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:57:12,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:57:12,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089283293] [2022-01-10 18:57:12,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:57:12,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:57:12,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:57:12,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:57:12,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:57:12,843 INFO L87 Difference]: Start difference. First operand 1283 states and 1984 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:57:14,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:57:17,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:57:17,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:57:17,432 INFO L93 Difference]: Finished difference Result 2966 states and 4633 transitions. [2022-01-10 18:57:17,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:57:17,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 18:57:17,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:57:17,439 INFO L225 Difference]: With dead ends: 2966 [2022-01-10 18:57:17,439 INFO L226 Difference]: Without dead ends: 2092 [2022-01-10 18:57:17,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:57:17,441 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 322 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:57:17,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 727 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-01-10 18:57:17,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states. [2022-01-10 18:57:17,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 2090. [2022-01-10 18:57:17,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 2089 states have (on average 1.5533748204882718) internal successors, (3245), 2089 states have internal predecessors, (3245), 0 states have call successors, (0), 0 states 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 18:57:17,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3245 transitions. [2022-01-10 18:57:17,785 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3245 transitions. Word has length 84 [2022-01-10 18:57:17,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:57:17,786 INFO L470 AbstractCegarLoop]: Abstraction has 2090 states and 3245 transitions. [2022-01-10 18:57:17,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:57:17,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3245 transitions. [2022-01-10 18:57:17,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:57:17,787 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:57:17,787 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] [2022-01-10 18:57:17,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:57:17,787 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:57:17,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:57:17,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1277112278, now seen corresponding path program 1 times [2022-01-10 18:57:17,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:57:17,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28112012] [2022-01-10 18:57:17,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:57:17,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:57:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:57:17,933 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 18:57:17,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:57:17,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28112012] [2022-01-10 18:57:17,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28112012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:57:17,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:57:17,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:57:17,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060245348] [2022-01-10 18:57:17,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:57:17,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:57:17,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:57:17,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:57:17,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:57:17,935 INFO L87 Difference]: Start difference. First operand 2090 states and 3245 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 18:57:18,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:57:18,332 INFO L93 Difference]: Finished difference Result 3876 states and 6049 transitions. [2022-01-10 18:57:18,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:57:18,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 18:57:18,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:57:18,339 INFO L225 Difference]: With dead ends: 3876 [2022-01-10 18:57:18,339 INFO L226 Difference]: Without dead ends: 2366 [2022-01-10 18:57:18,341 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 18:57:18,341 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 222 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:57:18,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 586 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:57:18,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2022-01-10 18:57:18,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 2364. [2022-01-10 18:57:18,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2364 states, 2363 states have (on average 1.5382987727465087) internal successors, (3635), 2363 states have internal predecessors, (3635), 0 states have call successors, (0), 0 states 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 18:57:18,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 3635 transitions. [2022-01-10 18:57:18,702 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 3635 transitions. Word has length 85 [2022-01-10 18:57:18,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:57:18,703 INFO L470 AbstractCegarLoop]: Abstraction has 2364 states and 3635 transitions. [2022-01-10 18:57:18,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 18:57:18,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 3635 transitions. [2022-01-10 18:57:18,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:57:18,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:57:18,704 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] [2022-01-10 18:57:18,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:57:18,704 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:57:18,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:57:18,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1425651183, now seen corresponding path program 1 times [2022-01-10 18:57:18,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:57:18,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495519738] [2022-01-10 18:57:18,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:57:18,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:57:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:57:19,005 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 18:57:19,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:57:19,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495519738] [2022-01-10 18:57:19,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495519738] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:57:19,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:57:19,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:57:19,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001357251] [2022-01-10 18:57:19,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:57:19,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:57:19,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:57:19,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:57:19,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:57:19,007 INFO L87 Difference]: Start difference. First operand 2364 states and 3635 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 18:57:22,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:57:24,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:57:29,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:57:29,651 INFO L93 Difference]: Finished difference Result 18594 states and 28845 transitions. [2022-01-10 18:57:29,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:57:29,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 18:57:29,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:57:29,699 INFO L225 Difference]: With dead ends: 18594 [2022-01-10 18:57:29,699 INFO L226 Difference]: Without dead ends: 16324 [2022-01-10 18:57:29,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:57:29,704 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 1671 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 24 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-01-10 18:57:29,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1671 Valid, 1206 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 835 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2022-01-10 18:57:29,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16324 states. [2022-01-10 18:57:31,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16324 to 8494. [2022-01-10 18:57:31,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8494 states, 8493 states have (on average 1.540916048510538) internal successors, (13087), 8493 states have internal predecessors, (13087), 0 states have call successors, (0), 0 states 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 18:57:31,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8494 states to 8494 states and 13087 transitions. [2022-01-10 18:57:31,988 INFO L78 Accepts]: Start accepts. Automaton has 8494 states and 13087 transitions. Word has length 85 [2022-01-10 18:57:31,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:57:31,988 INFO L470 AbstractCegarLoop]: Abstraction has 8494 states and 13087 transitions. [2022-01-10 18:57:31,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 18:57:31,988 INFO L276 IsEmpty]: Start isEmpty. Operand 8494 states and 13087 transitions. [2022-01-10 18:57:31,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:57:31,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:57:31,991 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] [2022-01-10 18:57:31,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:57:31,992 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:57:31,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:57:31,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1116262838, now seen corresponding path program 1 times [2022-01-10 18:57:31,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:57:31,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646862804] [2022-01-10 18:57:31,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:57:31,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:57:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:57:32,106 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 18:57:32,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:57:32,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646862804] [2022-01-10 18:57:32,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646862804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:57:32,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:57:32,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:57:32,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246713446] [2022-01-10 18:57:32,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:57:32,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:57:32,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:57:32,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:57:32,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:57:32,107 INFO L87 Difference]: Start difference. First operand 8494 states and 13087 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 18:57:36,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:57:36,070 INFO L93 Difference]: Finished difference Result 22424 states and 34541 transitions. [2022-01-10 18:57:36,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:57:36,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 18:57:36,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:57:36,116 INFO L225 Difference]: With dead ends: 22424 [2022-01-10 18:57:36,116 INFO L226 Difference]: Without dead ends: 14488 [2022-01-10 18:57:36,139 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 18:57:36,140 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 197 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:57:36,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 580 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:57:36,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14488 states. [2022-01-10 18:57:40,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14488 to 14453. [2022-01-10 18:57:40,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14453 states, 14452 states have (on average 1.5211043454193192) internal successors, (21983), 14452 states have internal predecessors, (21983), 0 states have call successors, (0), 0 states 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 18:57:40,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14453 states to 14453 states and 21983 transitions. [2022-01-10 18:57:40,213 INFO L78 Accepts]: Start accepts. Automaton has 14453 states and 21983 transitions. Word has length 85 [2022-01-10 18:57:40,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:57:40,213 INFO L470 AbstractCegarLoop]: Abstraction has 14453 states and 21983 transitions. [2022-01-10 18:57:40,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 18:57:40,214 INFO L276 IsEmpty]: Start isEmpty. Operand 14453 states and 21983 transitions. [2022-01-10 18:57:40,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:57:40,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:57:40,218 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] [2022-01-10 18:57:40,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:57:40,218 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:57:40,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:57:40,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1331144434, now seen corresponding path program 1 times [2022-01-10 18:57:40,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:57:40,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764622478] [2022-01-10 18:57:40,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:57:40,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:57:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:57:40,315 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 18:57:40,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:57:40,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764622478] [2022-01-10 18:57:40,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764622478] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:57:40,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:57:40,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:57:40,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641180502] [2022-01-10 18:57:40,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:57:40,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:57:40,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:57:40,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:57:40,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:57:40,317 INFO L87 Difference]: Start difference. First operand 14453 states and 21983 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 18:57:47,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:57:47,402 INFO L93 Difference]: Finished difference Result 39884 states and 60540 transitions. [2022-01-10 18:57:47,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:57:47,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 18:57:47,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:57:47,447 INFO L225 Difference]: With dead ends: 39884 [2022-01-10 18:57:47,447 INFO L226 Difference]: Without dead ends: 26638 [2022-01-10 18:57:47,464 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 18:57:47,465 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 184 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:57:47,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 576 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:57:47,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26638 states. [2022-01-10 18:57:54,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26638 to 26600. [2022-01-10 18:57:54,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26600 states, 26599 states have (on average 1.4976502876047972) internal successors, (39836), 26599 states have internal predecessors, (39836), 0 states have call successors, (0), 0 states 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 18:57:54,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26600 states to 26600 states and 39836 transitions. [2022-01-10 18:57:54,532 INFO L78 Accepts]: Start accepts. Automaton has 26600 states and 39836 transitions. Word has length 85 [2022-01-10 18:57:54,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:57:54,532 INFO L470 AbstractCegarLoop]: Abstraction has 26600 states and 39836 transitions. [2022-01-10 18:57:54,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 18:57:54,533 INFO L276 IsEmpty]: Start isEmpty. Operand 26600 states and 39836 transitions. [2022-01-10 18:57:54,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:57:54,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:57:54,541 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] [2022-01-10 18:57:54,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:57:54,542 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:57:54,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:57:54,542 INFO L85 PathProgramCache]: Analyzing trace with hash 354518166, now seen corresponding path program 1 times [2022-01-10 18:57:54,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:57:54,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266573489] [2022-01-10 18:57:54,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:57:54,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:57:54,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:57:54,642 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 18:57:54,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:57:54,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266573489] [2022-01-10 18:57:54,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266573489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:57:54,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:57:54,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:57:54,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974381139] [2022-01-10 18:57:54,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:57:54,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:57:54,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:57:54,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:57:54,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:57:54,643 INFO L87 Difference]: Start difference. First operand 26600 states and 39836 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 18:58:01,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:58:01,764 INFO L93 Difference]: Finished difference Result 36708 states and 54858 transitions. [2022-01-10 18:58:01,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:58:01,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 18:58:01,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:58:01,808 INFO L225 Difference]: With dead ends: 36708 [2022-01-10 18:58:01,809 INFO L226 Difference]: Without dead ends: 27586 [2022-01-10 18:58:01,823 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 18:58:01,823 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 175 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:58:01,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 579 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:58:01,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27586 states. [2022-01-10 18:58:09,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27586 to 27584. [2022-01-10 18:58:09,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27584 states, 27583 states have (on average 1.4783018525903637) internal successors, (40776), 27583 states have internal predecessors, (40776), 0 states have call successors, (0), 0 states 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 18:58:09,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27584 states to 27584 states and 40776 transitions. [2022-01-10 18:58:09,373 INFO L78 Accepts]: Start accepts. Automaton has 27584 states and 40776 transitions. Word has length 85 [2022-01-10 18:58:09,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:58:09,374 INFO L470 AbstractCegarLoop]: Abstraction has 27584 states and 40776 transitions. [2022-01-10 18:58:09,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 18:58:09,374 INFO L276 IsEmpty]: Start isEmpty. Operand 27584 states and 40776 transitions. [2022-01-10 18:58:09,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 18:58:09,396 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:58:09,396 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] [2022-01-10 18:58:09,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:58:09,397 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:58:09,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:58:09,397 INFO L85 PathProgramCache]: Analyzing trace with hash -992925584, now seen corresponding path program 1 times [2022-01-10 18:58:09,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:58:09,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299822419] [2022-01-10 18:58:09,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:58:09,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:58:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:58:09,486 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 18:58:09,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:58:09,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299822419] [2022-01-10 18:58:09,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299822419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:58:09,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:58:09,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:58:09,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736418171] [2022-01-10 18:58:09,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:58:09,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:58:09,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:58:09,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:58:09,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:58:09,488 INFO L87 Difference]: Start difference. First operand 27584 states and 40776 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)