/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:51:54,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:51:54,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:51:54,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:51:54,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:51:54,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:51:54,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:51:54,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:51:54,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:51:54,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:51:54,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:51:54,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:51:54,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:51:54,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:51:54,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:51:54,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:51:54,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:51:54,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:51:54,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:51:54,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:51:54,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:51:54,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:51:54,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:51:54,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:51:54,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:51:54,188 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:51:54,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:51:54,189 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:51:54,190 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:51:54,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:51:54,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:51:54,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:51:54,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:51:54,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:51:54,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:51:54,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:51:54,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:51:54,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:51:54,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:51:54,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:51:54,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:51:54,197 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:51:54,220 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:51:54,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:51:54,221 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:51:54,221 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:51:54,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:51:54,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:51:54,222 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:51:54,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:51:54,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:51:54,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:51:54,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:51:54,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:51:54,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:51:54,224 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:51:54,224 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:51:54,224 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:51:54,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:51:54,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:51:54,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:51:54,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:51:54,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:51:54,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:51:54,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:51:54,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:51:54,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:51:54,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:51:54,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:51:54,227 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:51:54,227 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:51:54,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:51:54,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:51:54,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:51:54,228 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:51:54,228 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:51:54,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:51:54,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:51:54,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:51:54,497 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:51:54,497 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:51:54,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 18:51:54,568 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7d94b624/ae00e1c08797410a937f1428fd68f809/FLAG69da8d19a [2022-01-10 18:51:54,976 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:51:54,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 18:51:54,991 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7d94b624/ae00e1c08797410a937f1428fd68f809/FLAG69da8d19a [2022-01-10 18:51:55,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7d94b624/ae00e1c08797410a937f1428fd68f809 [2022-01-10 18:51:55,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:51:55,341 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:51:55,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:51:55,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:51:55,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:51:55,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:51:55" (1/1) ... [2022-01-10 18:51:55,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b4fc67a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:55, skipping insertion in model container [2022-01-10 18:51:55,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:51:55" (1/1) ... [2022-01-10 18:51:55,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:51:55,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:51:55,628 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.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7165,7178] [2022-01-10 18:51:55,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:51:55,692 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:51:55,741 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.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[7165,7178] [2022-01-10 18:51:55,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:51:55,791 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:51:55,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:55 WrapperNode [2022-01-10 18:51:55,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:51:55,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:51:55,793 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:51:55,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:51:55,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:55" (1/1) ... [2022-01-10 18:51:55,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:55" (1/1) ... [2022-01-10 18:51:55,842 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 586 [2022-01-10 18:51:55,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:51:55,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:51:55,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:51:55,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:51:55,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:55" (1/1) ... [2022-01-10 18:51:55,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:55" (1/1) ... [2022-01-10 18:51:55,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:55" (1/1) ... [2022-01-10 18:51:55,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:55" (1/1) ... [2022-01-10 18:51:55,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:55" (1/1) ... [2022-01-10 18:51:55,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:55" (1/1) ... [2022-01-10 18:51:55,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:55" (1/1) ... [2022-01-10 18:51:55,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:51:55,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:51:55,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:51:55,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:51:55,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:55" (1/1) ... [2022-01-10 18:51:55,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:51:55,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:51:55,910 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 18:51:55,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 18:51:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:51:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:51:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:51:55,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:51:56,047 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:51:56,048 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:51:56,620 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:51:56,631 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:51:56,632 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 18:51:56,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:51:56 BoogieIcfgContainer [2022-01-10 18:51:56,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:51:56,636 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:51:56,636 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:51:56,637 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:51:56,639 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:51:56" (1/1) ... [2022-01-10 18:51:57,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:51:57 BasicIcfg [2022-01-10 18:51:57,149 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:51:57,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:51:57,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:51:57,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:51:57,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:51:55" (1/4) ... [2022-01-10 18:51:57,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3d2f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:51:57, skipping insertion in model container [2022-01-10 18:51:57,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:51:55" (2/4) ... [2022-01-10 18:51:57,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3d2f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:51:57, skipping insertion in model container [2022-01-10 18:51:57,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:51:56" (3/4) ... [2022-01-10 18:51:57,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3d2f43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:51:57, skipping insertion in model container [2022-01-10 18:51:57,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:51:57" (4/4) ... [2022-01-10 18:51:57,157 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-10 18:51:57,162 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:51:57,162 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:51:57,246 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:51:57,255 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:51:57,255 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:51:57,274 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 159 states have (on average 1.7044025157232705) internal successors, (271), 160 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:57,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 18:51:57,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:51:57,282 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] [2022-01-10 18:51:57,283 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:51:57,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:51:57,291 INFO L85 PathProgramCache]: Analyzing trace with hash 464920149, now seen corresponding path program 1 times [2022-01-10 18:51:57,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:51:57,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452873075] [2022-01-10 18:51:57,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:51:57,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:51:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:51:57,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:51:57,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:51:57,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452873075] [2022-01-10 18:51:57,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452873075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:51:57,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:51:57,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:51:57,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772117999] [2022-01-10 18:51:57,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:51:57,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:51:57,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:51:57,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:51:57,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:51:57,799 INFO L87 Difference]: Start difference. First operand has 161 states, 159 states have (on average 1.7044025157232705) internal successors, (271), 160 states have internal predecessors, (271), 0 states have call successors, (0), 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 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:58,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:51:58,368 INFO L93 Difference]: Finished difference Result 308 states and 501 transitions. [2022-01-10 18:51:58,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:51:58,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-01-10 18:51:58,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:51:58,383 INFO L225 Difference]: With dead ends: 308 [2022-01-10 18:51:58,383 INFO L226 Difference]: Without dead ends: 235 [2022-01-10 18:51:58,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:51:58,392 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 158 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 18:51:58,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 500 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 18:51:58,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-01-10 18:51:58,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2022-01-10 18:51:58,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.5086206896551724) internal successors, (350), 232 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:58,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 350 transitions. [2022-01-10 18:51:58,492 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 350 transitions. Word has length 49 [2022-01-10 18:51:58,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:51:58,493 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 350 transitions. [2022-01-10 18:51:58,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:58,493 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 350 transitions. [2022-01-10 18:51:58,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 18:51:58,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:51:58,496 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] [2022-01-10 18:51:58,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:51:58,497 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:51:58,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:51:58,499 INFO L85 PathProgramCache]: Analyzing trace with hash -450004183, now seen corresponding path program 1 times [2022-01-10 18:51:58,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:51:58,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833418818] [2022-01-10 18:51:58,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:51:58,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:51:58,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:51:58,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:51:58,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:51:58,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833418818] [2022-01-10 18:51:58,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833418818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:51:58,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:51:58,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:51:58,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026078856] [2022-01-10 18:51:58,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:51:58,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:51:58,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:51:58,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:51:58,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:51:58,686 INFO L87 Difference]: Start difference. First operand 233 states and 350 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:58,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:51:58,766 INFO L93 Difference]: Finished difference Result 567 states and 872 transitions. [2022-01-10 18:51:58,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:51:58,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 18:51:58,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:51:58,789 INFO L225 Difference]: With dead ends: 567 [2022-01-10 18:51:58,789 INFO L226 Difference]: Without dead ends: 401 [2022-01-10 18:51:58,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:51:58,791 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 159 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:51:58,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 436 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:51:58,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-01-10 18:51:58,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 399. [2022-01-10 18:51:58,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.5125628140703518) internal successors, (602), 398 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:58,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 602 transitions. [2022-01-10 18:51:58,853 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 602 transitions. Word has length 52 [2022-01-10 18:51:58,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:51:58,854 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 602 transitions. [2022-01-10 18:51:58,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:58,854 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 602 transitions. [2022-01-10 18:51:58,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 18:51:58,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:51:58,862 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] [2022-01-10 18:51:58,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:51:58,865 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:51:58,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:51:58,869 INFO L85 PathProgramCache]: Analyzing trace with hash -116752764, now seen corresponding path program 1 times [2022-01-10 18:51:58,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:51:58,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407704243] [2022-01-10 18:51:58,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:51:58,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:51:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:51:59,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:51:59,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:51:59,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407704243] [2022-01-10 18:51:59,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407704243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:51:59,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:51:59,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:51:59,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152589636] [2022-01-10 18:51:59,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:51:59,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:51:59,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:51:59,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:51:59,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:51:59,010 INFO L87 Difference]: Start difference. First operand 399 states and 602 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:59,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:51:59,107 INFO L93 Difference]: Finished difference Result 971 states and 1486 transitions. [2022-01-10 18:51:59,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:51:59,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 18:51:59,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:51:59,111 INFO L225 Difference]: With dead ends: 971 [2022-01-10 18:51:59,111 INFO L226 Difference]: Without dead ends: 687 [2022-01-10 18:51:59,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:51:59,114 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 146 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:51:59,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 436 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:51:59,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-01-10 18:51:59,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 685. [2022-01-10 18:51:59,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 684 states have (on average 1.5029239766081872) internal successors, (1028), 684 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:59,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1028 transitions. [2022-01-10 18:51:59,215 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1028 transitions. Word has length 52 [2022-01-10 18:51:59,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:51:59,216 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 1028 transitions. [2022-01-10 18:51:59,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:59,216 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1028 transitions. [2022-01-10 18:51:59,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 18:51:59,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:51:59,217 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] [2022-01-10 18:51:59,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:51:59,218 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:51:59,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:51:59,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1621360740, now seen corresponding path program 1 times [2022-01-10 18:51:59,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:51:59,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408735510] [2022-01-10 18:51:59,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:51:59,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:51:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:51:59,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:51:59,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:51:59,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408735510] [2022-01-10 18:51:59,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408735510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:51:59,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:51:59,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:51:59,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133286375] [2022-01-10 18:51:59,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:51:59,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:51:59,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:51:59,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:51:59,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:51:59,371 INFO L87 Difference]: Start difference. First operand 685 states and 1028 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:59,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:51:59,537 INFO L93 Difference]: Finished difference Result 1759 states and 2652 transitions. [2022-01-10 18:51:59,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:51:59,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 18:51:59,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:51:59,544 INFO L225 Difference]: With dead ends: 1759 [2022-01-10 18:51:59,544 INFO L226 Difference]: Without dead ends: 1165 [2022-01-10 18:51:59,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:51:59,554 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 158 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:51:59,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 437 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:51:59,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2022-01-10 18:51:59,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1163. [2022-01-10 18:51:59,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1162 states have (on average 1.4716006884681583) internal successors, (1710), 1162 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:59,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1710 transitions. [2022-01-10 18:51:59,707 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1710 transitions. Word has length 52 [2022-01-10 18:51:59,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:51:59,707 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 1710 transitions. [2022-01-10 18:51:59,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:51:59,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1710 transitions. [2022-01-10 18:51:59,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 18:51:59,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:51:59,710 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] [2022-01-10 18:51:59,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:51:59,711 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:51:59,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:51:59,711 INFO L85 PathProgramCache]: Analyzing trace with hash 419153035, now seen corresponding path program 1 times [2022-01-10 18:51:59,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:51:59,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009321961] [2022-01-10 18:51:59,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:51:59,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:51:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:00,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:52:00,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:00,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009321961] [2022-01-10 18:52:00,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009321961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:00,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:00,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:52:00,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678367639] [2022-01-10 18:52:00,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:00,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:52:00,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:00,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:52:00,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:52:00,104 INFO L87 Difference]: Start difference. First operand 1163 states and 1710 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:02,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:05,065 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:07,767 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:10,146 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:13,856 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:16,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:16,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:16,614 INFO L93 Difference]: Finished difference Result 7292 states and 10887 transitions. [2022-01-10 18:52:16,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:52:16,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-01-10 18:52:16,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:16,637 INFO L225 Difference]: With dead ends: 7292 [2022-01-10 18:52:16,637 INFO L226 Difference]: Without dead ends: 6273 [2022-01-10 18:52:16,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:52:16,640 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 1021 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 29 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:16,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1021 Valid, 1095 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 790 Invalid, 6 Unknown, 0 Unchecked, 15.2s Time] [2022-01-10 18:52:16,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6273 states. [2022-01-10 18:52:17,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6273 to 3543. [2022-01-10 18:52:17,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3543 states, 3542 states have (on average 1.4839073969508751) internal successors, (5256), 3542 states have internal predecessors, (5256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:17,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 5256 transitions. [2022-01-10 18:52:17,273 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 5256 transitions. Word has length 53 [2022-01-10 18:52:17,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:17,273 INFO L470 AbstractCegarLoop]: Abstraction has 3543 states and 5256 transitions. [2022-01-10 18:52:17,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:17,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 5256 transitions. [2022-01-10 18:52:17,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 18:52:17,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:17,275 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] [2022-01-10 18:52:17,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:52:17,276 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:17,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:17,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1994675375, now seen corresponding path program 1 times [2022-01-10 18:52:17,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:17,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828173826] [2022-01-10 18:52:17,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:17,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:17,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:52:17,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:17,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828173826] [2022-01-10 18:52:17,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828173826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:17,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:17,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:52:17,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103233727] [2022-01-10 18:52:17,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:17,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:52:17,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:17,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:52:17,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:52:17,544 INFO L87 Difference]: Start difference. First operand 3543 states and 5256 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:19,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:21,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:24,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:26,901 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:29,096 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:31,242 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:33,469 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:35,891 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:38,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:40,526 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:42,635 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:45,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:49,953 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:52,174 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:52:54,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:52:54,879 INFO L93 Difference]: Finished difference Result 27340 states and 40829 transitions. [2022-01-10 18:52:54,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:52:54,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-01-10 18:52:54,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:52:54,960 INFO L225 Difference]: With dead ends: 27340 [2022-01-10 18:52:54,961 INFO L226 Difference]: Without dead ends: 24047 [2022-01-10 18:52:54,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:52:54,974 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 1139 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 22 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.8s IncrementalHoareTripleChecker+Time [2022-01-10 18:52:54,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1139 Valid, 1206 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 727 Invalid, 14 Unknown, 0 Unchecked, 31.8s Time] [2022-01-10 18:52:54,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24047 states. [2022-01-10 18:52:58,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24047 to 12823. [2022-01-10 18:52:58,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12823 states, 12822 states have (on average 1.4829199812821712) internal successors, (19014), 12822 states have internal predecessors, (19014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12823 states to 12823 states and 19014 transitions. [2022-01-10 18:52:58,742 INFO L78 Accepts]: Start accepts. Automaton has 12823 states and 19014 transitions. Word has length 53 [2022-01-10 18:52:58,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:52:58,743 INFO L470 AbstractCegarLoop]: Abstraction has 12823 states and 19014 transitions. [2022-01-10 18:52:58,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:52:58,743 INFO L276 IsEmpty]: Start isEmpty. Operand 12823 states and 19014 transitions. [2022-01-10 18:52:58,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 18:52:58,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:52:58,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:52:58,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:52:58,747 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:52:58,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:52:58,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1092664531, now seen corresponding path program 1 times [2022-01-10 18:52:58,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:52:58,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418185517] [2022-01-10 18:52:58,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:52:58,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:52:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:52:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:52:59,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:52:59,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418185517] [2022-01-10 18:52:59,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418185517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:52:59,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:52:59,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:52:59,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072479262] [2022-01-10 18:52:59,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:52:59,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:52:59,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:52:59,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:52:59,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:52:59,069 INFO L87 Difference]: Start difference. First operand 12823 states and 19014 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:53:01,241 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:53:03,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 18:53:06,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []