/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:35:25,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:35:25,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:35:25,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:35:25,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:35:25,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:35:25,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:35:25,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:35:25,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:35:25,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:35:25,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:35:25,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:35:25,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:35:25,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:35:25,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:35:25,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:35:25,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:35:25,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:35:25,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:35:25,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:35:25,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:35:25,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:35:25,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:35:25,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:35:25,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:35:25,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:35:25,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:35:25,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:35:25,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:35:25,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:35:25,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:35:25,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:35:25,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:35:25,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:35:25,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:35:25,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:35:25,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:35:25,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:35:25,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:35:25,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:35:25,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:35:25,450 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 06:35:25,476 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:35:25,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:35:25,477 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:35:25,477 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:35:25,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:35:25,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:35:25,478 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:35:25,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:35:25,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:35:25,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:35:25,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:35:25,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:35:25,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:35:25,480 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:35:25,480 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:35:25,480 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:35:25,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:35:25,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:35:25,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:35:25,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:35:25,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:35:25,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:35:25,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:35:25,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:35:25,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:35:25,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:35:25,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:35:25,482 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:35:25,482 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:35:25,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:35:25,482 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:35:25,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:35:25,483 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:35:25,483 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:35:25,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:35:25,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:35:25,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:35:25,692 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:35:25,692 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:35:25,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-11 06:35:25,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4901f5a87/ac882636db8947fca9874b9d04b1e60a/FLAGc66c73ff7 [2022-01-11 06:35:26,123 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:35:26,123 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-11 06:35:26,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4901f5a87/ac882636db8947fca9874b9d04b1e60a/FLAGc66c73ff7 [2022-01-11 06:35:26,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4901f5a87/ac882636db8947fca9874b9d04b1e60a [2022-01-11 06:35:26,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:35:26,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:35:26,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:35:26,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:35:26,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:35:26,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:35:26" (1/1) ... [2022-01-11 06:35:26,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cba6658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:26, skipping insertion in model container [2022-01-11 06:35:26,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:35:26" (1/1) ... [2022-01-11 06:35:26,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:35:26,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:35:26,422 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.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9868,9881] [2022-01-11 06:35:26,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:35:26,493 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:35:26,548 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.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9868,9881] [2022-01-11 06:35:26,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:35:26,590 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:35:26,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:26 WrapperNode [2022-01-11 06:35:26,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:35:26,591 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:35:26,591 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:35:26,591 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:35:26,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:26" (1/1) ... [2022-01-11 06:35:26,618 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:26" (1/1) ... [2022-01-11 06:35:26,656 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 928 [2022-01-11 06:35:26,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:35:26,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:35:26,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:35:26,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:35:26,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:26" (1/1) ... [2022-01-11 06:35:26,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:26" (1/1) ... [2022-01-11 06:35:26,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:26" (1/1) ... [2022-01-11 06:35:26,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:26" (1/1) ... [2022-01-11 06:35:26,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:26" (1/1) ... [2022-01-11 06:35:26,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:26" (1/1) ... [2022-01-11 06:35:26,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:26" (1/1) ... [2022-01-11 06:35:26,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:35:26,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:35:26,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:35:26,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:35:26,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:26" (1/1) ... [2022-01-11 06:35:26,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:35:26,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:35:26,742 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 06:35:26,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 06:35:26,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:35:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:35:26,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:35:26,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:35:26,911 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:35:26,912 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:35:27,637 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:35:27,644 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:35:27,644 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:35:27,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:35:27 BoogieIcfgContainer [2022-01-11 06:35:27,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:35:27,646 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:35:27,646 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:35:27,647 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:35:27,649 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:35:27" (1/1) ... [2022-01-11 06:35:28,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:35:28 BasicIcfg [2022-01-11 06:35:28,138 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:35:28,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:35:28,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:35:28,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:35:28,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:35:26" (1/4) ... [2022-01-11 06:35:28,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b041b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:35:28, skipping insertion in model container [2022-01-11 06:35:28,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:35:26" (2/4) ... [2022-01-11 06:35:28,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b041b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:35:28, skipping insertion in model container [2022-01-11 06:35:28,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:35:27" (3/4) ... [2022-01-11 06:35:28,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b041b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:35:28, skipping insertion in model container [2022-01-11 06:35:28,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:35:28" (4/4) ... [2022-01-11 06:35:28,144 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-11 06:35:28,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:35:28,148 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:35:28,193 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:35:28,199 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 06:35:28,199 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:35:28,218 INFO L276 IsEmpty]: Start isEmpty. Operand has 258 states, 256 states have (on average 1.72265625) internal successors, (441), 257 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:28,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-11 06:35:28,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:35:28,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:35:28,229 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:35:28,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:35:28,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1276429326, now seen corresponding path program 1 times [2022-01-11 06:35:28,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:35:28,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259267462] [2022-01-11 06:35:28,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:35:28,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:35:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:35:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:35:28,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:35:28,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259267462] [2022-01-11 06:35:28,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259267462] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:35:28,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:35:28,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:35:28,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424628153] [2022-01-11 06:35:28,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:35:28,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:35:28,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:35:28,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:35:28,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:35:28,874 INFO L87 Difference]: Start difference. First operand has 258 states, 256 states have (on average 1.72265625) internal successors, (441), 257 states have internal predecessors, (441), 0 states have call successors, (0), 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 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:29,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:35:29,506 INFO L93 Difference]: Finished difference Result 521 states and 862 transitions. [2022-01-11 06:35:29,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:35:29,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-01-11 06:35:29,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:35:29,526 INFO L225 Difference]: With dead ends: 521 [2022-01-11 06:35:29,526 INFO L226 Difference]: Without dead ends: 395 [2022-01-11 06:35:29,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:35:29,538 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 215 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-11 06:35:29,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 831 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-11 06:35:29,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-01-11 06:35:29,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 393. [2022-01-11 06:35:29,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 1.5076530612244898) internal successors, (591), 392 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:29,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 591 transitions. [2022-01-11 06:35:29,644 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 591 transitions. Word has length 96 [2022-01-11 06:35:29,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:35:29,645 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 591 transitions. [2022-01-11 06:35:29,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:29,646 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 591 transitions. [2022-01-11 06:35:29,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-11 06:35:29,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:35:29,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:35:29,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:35:29,653 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:35:29,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:35:29,654 INFO L85 PathProgramCache]: Analyzing trace with hash 913617788, now seen corresponding path program 1 times [2022-01-11 06:35:29,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:35:29,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714445490] [2022-01-11 06:35:29,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:35:29,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:35:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:35:29,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:35:29,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:35:29,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714445490] [2022-01-11 06:35:29,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714445490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:35:29,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:35:29,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:35:29,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59141089] [2022-01-11 06:35:29,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:35:29,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:35:29,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:35:29,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:35:29,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:35:29,939 INFO L87 Difference]: Start difference. First operand 393 states and 591 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:30,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:35:30,074 INFO L93 Difference]: Finished difference Result 644 states and 989 transitions. [2022-01-11 06:35:30,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:35:30,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2022-01-11 06:35:30,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:35:30,079 INFO L225 Difference]: With dead ends: 644 [2022-01-11 06:35:30,079 INFO L226 Difference]: Without dead ends: 642 [2022-01-11 06:35:30,084 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 [2022-01-11 06:35:30,085 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 539 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:35:30,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 1014 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:35:30,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-01-11 06:35:30,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 395. [2022-01-11 06:35:30,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.5050761421319796) internal successors, (593), 394 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:30,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 593 transitions. [2022-01-11 06:35:30,136 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 593 transitions. Word has length 97 [2022-01-11 06:35:30,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:35:30,137 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 593 transitions. [2022-01-11 06:35:30,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:30,137 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 593 transitions. [2022-01-11 06:35:30,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 06:35:30,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:35:30,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:35:30,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:35:30,144 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:35:30,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:35:30,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1741609301, now seen corresponding path program 1 times [2022-01-11 06:35:30,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:35:30,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474326977] [2022-01-11 06:35:30,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:35:30,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:35:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:35:30,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:35:30,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:35:30,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474326977] [2022-01-11 06:35:30,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474326977] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:35:30,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:35:30,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 06:35:30,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184437962] [2022-01-11 06:35:30,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:35:30,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 06:35:30,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:35:30,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 06:35:30,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-11 06:35:30,504 INFO L87 Difference]: Start difference. First operand 395 states and 593 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:32,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:35:32,288 INFO L93 Difference]: Finished difference Result 4296 states and 6781 transitions. [2022-01-11 06:35:32,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-11 06:35:32,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-11 06:35:32,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:35:32,300 INFO L225 Difference]: With dead ends: 4296 [2022-01-11 06:35:32,301 INFO L226 Difference]: Without dead ends: 4000 [2022-01-11 06:35:32,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2022-01-11 06:35:32,303 INFO L933 BasicCegarLoop]: 1232 mSDtfsCounter, 3103 mSDsluCounter, 5745 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3103 SdHoareTripleChecker+Valid, 6977 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 06:35:32,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3103 Valid, 6977 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 06:35:32,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4000 states. [2022-01-11 06:35:32,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4000 to 1856. [2022-01-11 06:35:32,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 1.5638814016172506) internal successors, (2901), 1855 states have internal predecessors, (2901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:32,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2901 transitions. [2022-01-11 06:35:32,618 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2901 transitions. Word has length 98 [2022-01-11 06:35:32,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:35:32,618 INFO L470 AbstractCegarLoop]: Abstraction has 1856 states and 2901 transitions. [2022-01-11 06:35:32,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:32,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2901 transitions. [2022-01-11 06:35:32,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-11 06:35:32,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:35:32,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:35:32,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:35:32,620 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:35:32,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:35:32,621 INFO L85 PathProgramCache]: Analyzing trace with hash 394371311, now seen corresponding path program 1 times [2022-01-11 06:35:32,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:35:32,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195090803] [2022-01-11 06:35:32,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:35:32,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:35:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:35:32,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:35:32,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:35:32,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195090803] [2022-01-11 06:35:32,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195090803] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:35:32,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:35:32,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:35:32,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182150166] [2022-01-11 06:35:32,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:35:32,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:35:32,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:35:32,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:35:32,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:35:32,851 INFO L87 Difference]: Start difference. First operand 1856 states and 2901 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:34,878 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 [] [2022-01-11 06:35:35,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:35:35,574 INFO L93 Difference]: Finished difference Result 4302 states and 6793 transitions. [2022-01-11 06:35:35,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:35:35,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-01-11 06:35:35,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:35:35,583 INFO L225 Difference]: With dead ends: 4302 [2022-01-11 06:35:35,583 INFO L226 Difference]: Without dead ends: 3040 [2022-01-11 06:35:35,585 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 [2022-01-11 06:35:35,585 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 390 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:35:35,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 766 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 06:35:35,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2022-01-11 06:35:36,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 3026. [2022-01-11 06:35:36,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3026 states, 3025 states have (on average 1.5692561983471074) internal successors, (4747), 3025 states have internal predecessors, (4747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3026 states to 3026 states and 4747 transitions. [2022-01-11 06:35:36,122 INFO L78 Accepts]: Start accepts. Automaton has 3026 states and 4747 transitions. Word has length 99 [2022-01-11 06:35:36,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:35:36,123 INFO L470 AbstractCegarLoop]: Abstraction has 3026 states and 4747 transitions. [2022-01-11 06:35:36,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:36,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3026 states and 4747 transitions. [2022-01-11 06:35:36,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-11 06:35:36,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:35:36,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:35:36,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:35:36,125 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:35:36,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:35:36,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1620398358, now seen corresponding path program 1 times [2022-01-11 06:35:36,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:35:36,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142600610] [2022-01-11 06:35:36,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:35:36,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:35:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:35:36,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:35:36,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:35:36,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142600610] [2022-01-11 06:35:36,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142600610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:35:36,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:35:36,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:35:36,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396392892] [2022-01-11 06:35:36,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:35:36,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:35:36,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:35:36,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:35:36,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:35:36,269 INFO L87 Difference]: Start difference. First operand 3026 states and 4747 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:36,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:35:36,961 INFO L93 Difference]: Finished difference Result 6925 states and 10929 transitions. [2022-01-11 06:35:36,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:35:36,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-11 06:35:36,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:35:36,974 INFO L225 Difference]: With dead ends: 6925 [2022-01-11 06:35:36,974 INFO L226 Difference]: Without dead ends: 4243 [2022-01-11 06:35:36,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:35:36,978 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 260 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 710 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 [2022-01-11 06:35:36,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 710 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:35:36,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4243 states. [2022-01-11 06:35:37,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4243 to 4232. [2022-01-11 06:35:37,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4232 states, 4231 states have (on average 1.555896951075396) internal successors, (6583), 4231 states have internal predecessors, (6583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:37,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4232 states to 4232 states and 6583 transitions. [2022-01-11 06:35:37,705 INFO L78 Accepts]: Start accepts. Automaton has 4232 states and 6583 transitions. Word has length 100 [2022-01-11 06:35:37,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:35:37,706 INFO L470 AbstractCegarLoop]: Abstraction has 4232 states and 6583 transitions. [2022-01-11 06:35:37,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:37,706 INFO L276 IsEmpty]: Start isEmpty. Operand 4232 states and 6583 transitions. [2022-01-11 06:35:37,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-11 06:35:37,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:35:37,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:35:37,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:35:37,708 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:35:37,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:35:37,708 INFO L85 PathProgramCache]: Analyzing trace with hash 28194523, now seen corresponding path program 1 times [2022-01-11 06:35:37,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:35:37,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589673400] [2022-01-11 06:35:37,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:35:37,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:35:37,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:35:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:35:37,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:35:37,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589673400] [2022-01-11 06:35:37,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589673400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:35:37,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:35:37,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:35:37,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213292625] [2022-01-11 06:35:37,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:35:37,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:35:37,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:35:37,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:35:37,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:35:37,817 INFO L87 Difference]: Start difference. First operand 4232 states and 6583 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:38,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:35:38,933 INFO L93 Difference]: Finished difference Result 10745 states and 16802 transitions. [2022-01-11 06:35:38,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:35:38,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-11 06:35:38,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:35:38,952 INFO L225 Difference]: With dead ends: 10745 [2022-01-11 06:35:38,952 INFO L226 Difference]: Without dead ends: 7014 [2022-01-11 06:35:38,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:35:38,957 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 247 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 710 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 [2022-01-11 06:35:38,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 710 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:35:38,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7014 states. [2022-01-11 06:35:40,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7014 to 7002. [2022-01-11 06:35:40,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7002 states, 7001 states have (on average 1.5444936437651764) internal successors, (10813), 7001 states have internal predecessors, (10813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:40,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7002 states to 7002 states and 10813 transitions. [2022-01-11 06:35:40,174 INFO L78 Accepts]: Start accepts. Automaton has 7002 states and 10813 transitions. Word has length 100 [2022-01-11 06:35:40,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:35:40,174 INFO L470 AbstractCegarLoop]: Abstraction has 7002 states and 10813 transitions. [2022-01-11 06:35:40,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:40,174 INFO L276 IsEmpty]: Start isEmpty. Operand 7002 states and 10813 transitions. [2022-01-11 06:35:40,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-11 06:35:40,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:35:40,181 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:35:40,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:35:40,181 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:35:40,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:35:40,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1781247798, now seen corresponding path program 1 times [2022-01-11 06:35:40,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:35:40,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426630491] [2022-01-11 06:35:40,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:35:40,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:35:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:35:40,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:35:40,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:35:40,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426630491] [2022-01-11 06:35:40,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426630491] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:35:40,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:35:40,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:35:40,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894292903] [2022-01-11 06:35:40,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:35:40,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:35:40,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:35:40,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:35:40,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:35:40,287 INFO L87 Difference]: Start difference. First operand 7002 states and 10813 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:42,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:35:42,508 INFO L93 Difference]: Finished difference Result 18717 states and 28991 transitions. [2022-01-11 06:35:42,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:35:42,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-11 06:35:42,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:35:42,536 INFO L225 Difference]: With dead ends: 18717 [2022-01-11 06:35:42,537 INFO L226 Difference]: Without dead ends: 12609 [2022-01-11 06:35:42,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:35:42,546 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 234 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 710 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 [2022-01-11 06:35:42,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 710 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:35:42,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12609 states. [2022-01-11 06:35:44,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12609 to 12597. [2022-01-11 06:35:44,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12597 states, 12596 states have (on average 1.530327087964433) internal successors, (19276), 12596 states have internal predecessors, (19276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:44,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12597 states to 12597 states and 19276 transitions. [2022-01-11 06:35:44,723 INFO L78 Accepts]: Start accepts. Automaton has 12597 states and 19276 transitions. Word has length 100 [2022-01-11 06:35:44,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:35:44,723 INFO L470 AbstractCegarLoop]: Abstraction has 12597 states and 19276 transitions. [2022-01-11 06:35:44,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:44,723 INFO L276 IsEmpty]: Start isEmpty. Operand 12597 states and 19276 transitions. [2022-01-11 06:35:44,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-11 06:35:44,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:35:44,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:35:44,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:35:44,729 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:35:44,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:35:44,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1566366202, now seen corresponding path program 1 times [2022-01-11 06:35:44,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:35:44,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8982272] [2022-01-11 06:35:44,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:35:44,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:35:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:35:44,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:35:44,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:35:44,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8982272] [2022-01-11 06:35:44,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8982272] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:35:44,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:35:44,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:35:44,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184198718] [2022-01-11 06:35:44,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:35:44,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:35:44,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:35:44,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:35:44,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:35:44,861 INFO L87 Difference]: Start difference. First operand 12597 states and 19276 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:48,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:35:48,673 INFO L93 Difference]: Finished difference Result 34125 states and 52244 transitions. [2022-01-11 06:35:48,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:35:48,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-11 06:35:48,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:35:48,719 INFO L225 Difference]: With dead ends: 34125 [2022-01-11 06:35:48,719 INFO L226 Difference]: Without dead ends: 23328 [2022-01-11 06:35:48,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:35:48,733 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 221 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 710 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 [2022-01-11 06:35:48,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 710 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:35:48,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23328 states. [2022-01-11 06:35:52,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23328 to 23316. [2022-01-11 06:35:52,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23316 states, 23315 states have (on average 1.5119450997212096) internal successors, (35251), 23315 states have internal predecessors, (35251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:52,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23316 states to 23316 states and 35251 transitions. [2022-01-11 06:35:52,700 INFO L78 Accepts]: Start accepts. Automaton has 23316 states and 35251 transitions. Word has length 100 [2022-01-11 06:35:52,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:35:52,700 INFO L470 AbstractCegarLoop]: Abstraction has 23316 states and 35251 transitions. [2022-01-11 06:35:52,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:52,701 INFO L276 IsEmpty]: Start isEmpty. Operand 23316 states and 35251 transitions. [2022-01-11 06:35:52,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-11 06:35:52,711 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:35:52,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:35:52,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:35:52,711 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:35:52,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:35:52,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1042938494, now seen corresponding path program 1 times [2022-01-11 06:35:52,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:35:52,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685032475] [2022-01-11 06:35:52,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:35:52,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:35:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:35:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:35:52,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:35:52,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685032475] [2022-01-11 06:35:52,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685032475] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:35:52,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:35:52,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:35:52,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628662831] [2022-01-11 06:35:52,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:35:52,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:35:52,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:35:52,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:35:52,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:35:52,821 INFO L87 Difference]: Start difference. First operand 23316 states and 35251 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:35:56,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:35:56,781 INFO L93 Difference]: Finished difference Result 29017 states and 43851 transitions. [2022-01-11 06:35:56,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:35:56,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-11 06:35:56,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:35:56,820 INFO L225 Difference]: With dead ends: 29017 [2022-01-11 06:35:56,821 INFO L226 Difference]: Without dead ends: 23615 [2022-01-11 06:35:56,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:35:56,832 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 212 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 713 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 [2022-01-11 06:35:56,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 713 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:35:56,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23615 states. [2022-01-11 06:36:00,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23615 to 23613. [2022-01-11 06:36:00,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23613 states, 23612 states have (on average 1.4952142978146705) internal successors, (35305), 23612 states have internal predecessors, (35305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:36:01,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23613 states to 23613 states and 35305 transitions. [2022-01-11 06:36:01,021 INFO L78 Accepts]: Start accepts. Automaton has 23613 states and 35305 transitions. Word has length 100 [2022-01-11 06:36:01,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:36:01,021 INFO L470 AbstractCegarLoop]: Abstraction has 23613 states and 35305 transitions. [2022-01-11 06:36:01,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:36:01,021 INFO L276 IsEmpty]: Start isEmpty. Operand 23613 states and 35305 transitions. [2022-01-11 06:36:01,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-11 06:36:01,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:36:01,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:36:01,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:36:01,033 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:36:01,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:36:01,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1346029819, now seen corresponding path program 1 times [2022-01-11 06:36:01,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:36:01,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770658841] [2022-01-11 06:36:01,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:36:01,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:36:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:36:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:36:01,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:36:01,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770658841] [2022-01-11 06:36:01,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770658841] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:36:01,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:36:01,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:36:01,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372223803] [2022-01-11 06:36:01,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:36:01,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:36:01,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:36:01,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:36:01,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:36:01,444 INFO L87 Difference]: Start difference. First operand 23613 states and 35305 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:36:07,786 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:36:10,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:36:29,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:36:29,947 INFO L93 Difference]: Finished difference Result 112895 states and 167861 transitions. [2022-01-11 06:36:29,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 06:36:29,948 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-11 06:36:29,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:36:30,108 INFO L225 Difference]: With dead ends: 112895 [2022-01-11 06:36:30,108 INFO L226 Difference]: Without dead ends: 90303 [2022-01-11 06:36:30,154 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 [2022-01-11 06:36:30,155 INFO L933 BasicCegarLoop]: 509 mSDtfsCounter, 2083 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 26 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2083 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-01-11 06:36:30,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2083 Valid, 1487 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 817 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2022-01-11 06:36:30,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90303 states.