/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.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:32:15,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:32:15,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:32:15,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:32:15,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:32:15,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:32:15,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:32:15,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:32:15,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:32:15,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:32:15,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:32:15,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:32:15,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:32:15,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:32:15,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:32:15,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:32:15,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:32:15,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:32:15,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:32:15,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:32:15,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:32:15,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:32:15,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:32:15,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:32:15,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:32:15,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:32:15,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:32:15,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:32:15,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:32:15,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:32:15,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:32:15,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:32:15,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:32:15,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:32:15,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:32:15,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:32:15,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:32:15,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:32:15,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:32:15,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:32:15,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:32:15,911 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 06:32:15,939 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:32:15,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:32:15,940 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:32:15,940 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:32:15,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:32:15,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:32:15,942 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:32:15,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:32:15,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:32:15,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:32:15,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:32:15,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:32:15,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:32:15,943 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:32:15,943 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:32:15,943 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:32:15,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:32:15,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:32:15,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:32:15,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:32:15,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:32:15,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:32:15,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:32:15,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:32:15,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:32:15,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:32:15,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:32:15,945 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:32:15,945 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:32:15,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:32:15,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:32:15,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:32:15,946 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:32:15,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:32:16,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:32:16,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:32:16,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:32:16,185 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:32:16,185 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:32:16,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 06:32:16,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/337f65d54/165f97c562cf4219b9a4e55ddf73cb79/FLAG89b1e552b [2022-01-11 06:32:16,588 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:32:16,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-11 06:32:16,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/337f65d54/165f97c562cf4219b9a4e55ddf73cb79/FLAG89b1e552b [2022-01-11 06:32:16,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/337f65d54/165f97c562cf4219b9a4e55ddf73cb79 [2022-01-11 06:32:16,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:32:16,994 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:32:16,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:32:16,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:32:17,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:32:17,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:32:16" (1/1) ... [2022-01-11 06:32:17,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3625aa7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:17, skipping insertion in model container [2022-01-11 06:32:17,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:32:16" (1/1) ... [2022-01-11 06:32:17,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:32:17,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:32:17,224 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.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5377,5390] [2022-01-11 06:32:17,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:32:17,261 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:32:17,291 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.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5377,5390] [2022-01-11 06:32:17,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:32:17,328 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:32:17,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:17 WrapperNode [2022-01-11 06:32:17,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:32:17,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:32:17,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:32:17,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:32:17,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:17" (1/1) ... [2022-01-11 06:32:17,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:17" (1/1) ... [2022-01-11 06:32:17,387 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 398 [2022-01-11 06:32:17,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:32:17,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:32:17,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:32:17,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:32:17,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:17" (1/1) ... [2022-01-11 06:32:17,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:17" (1/1) ... [2022-01-11 06:32:17,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:17" (1/1) ... [2022-01-11 06:32:17,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:17" (1/1) ... [2022-01-11 06:32:17,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:17" (1/1) ... [2022-01-11 06:32:17,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:17" (1/1) ... [2022-01-11 06:32:17,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:17" (1/1) ... [2022-01-11 06:32:17,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:32:17,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:32:17,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:32:17,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:32:17,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:17" (1/1) ... [2022-01-11 06:32:17,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:32:17,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:32:17,501 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 06:32:17,503 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 06:32:17,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:32:17,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:32:17,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:32:17,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:32:17,616 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:32:17,617 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:32:17,979 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:32:17,985 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:32:17,986 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:32:17,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:32:17 BoogieIcfgContainer [2022-01-11 06:32:17,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:32:17,988 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:32:17,988 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:32:17,989 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:32:17,992 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:32:17" (1/1) ... [2022-01-11 06:32:18,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:32:18 BasicIcfg [2022-01-11 06:32:18,367 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:32:18,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:32:18,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:32:18,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:32:18,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:32:16" (1/4) ... [2022-01-11 06:32:18,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d38fd01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:32:18, skipping insertion in model container [2022-01-11 06:32:18,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:32:17" (2/4) ... [2022-01-11 06:32:18,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d38fd01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:32:18, skipping insertion in model container [2022-01-11 06:32:18,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:32:17" (3/4) ... [2022-01-11 06:32:18,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d38fd01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:32:18, skipping insertion in model container [2022-01-11 06:32:18,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:32:18" (4/4) ... [2022-01-11 06:32:18,375 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-11 06:32:18,380 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:32:18,380 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:32:18,459 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:32:18,485 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 06:32:18,485 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:32:18,510 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 105 states have (on average 1.6857142857142857) internal successors, (177), 106 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 06:32:18,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-11 06:32:18,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:18,519 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] [2022-01-11 06:32:18,519 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:18,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:18,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1358638104, now seen corresponding path program 1 times [2022-01-11 06:32:18,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:18,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587982334] [2022-01-11 06:32:18,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:18,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:19,050 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 06:32:19,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:19,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587982334] [2022-01-11 06:32:19,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587982334] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:19,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:19,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:32:19,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008563795] [2022-01-11 06:32:19,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:19,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:32:19,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:19,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:32:19,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:19,086 INFO L87 Difference]: Start difference. First operand has 107 states, 105 states have (on average 1.6857142857142857) internal successors, (177), 106 states have internal predecessors, (177), 0 states have call successors, (0), 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 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 06:32:19,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:19,172 INFO L93 Difference]: Finished difference Result 251 states and 401 transitions. [2022-01-11 06:32:19,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:32:19,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-01-11 06:32:19,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:19,189 INFO L225 Difference]: With dead ends: 251 [2022-01-11 06:32:19,189 INFO L226 Difference]: Without dead ends: 165 [2022-01-11 06:32:19,191 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 06:32:19,200 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 123 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:19,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 368 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:32:19,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-01-11 06:32:19,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2022-01-11 06:32:19,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5) internal successors, (243), 162 states have internal predecessors, (243), 0 states have call successors, (0), 0 states 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 06:32:19,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 243 transitions. [2022-01-11 06:32:19,257 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 243 transitions. Word has length 48 [2022-01-11 06:32:19,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:19,258 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 243 transitions. [2022-01-11 06:32:19,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states 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 06:32:19,258 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 243 transitions. [2022-01-11 06:32:19,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-11 06:32:19,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:19,261 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] [2022-01-11 06:32:19,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:32:19,261 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:19,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:19,265 INFO L85 PathProgramCache]: Analyzing trace with hash 2039198546, now seen corresponding path program 1 times [2022-01-11 06:32:19,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:19,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655812128] [2022-01-11 06:32:19,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:19,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:19,457 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 06:32:19,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:19,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655812128] [2022-01-11 06:32:19,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655812128] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:19,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:19,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:32:19,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440710424] [2022-01-11 06:32:19,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:19,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:32:19,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:19,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:32:19,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:19,464 INFO L87 Difference]: Start difference. First operand 163 states and 243 transitions. 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) [2022-01-11 06:32:19,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:19,503 INFO L93 Difference]: Finished difference Result 403 states and 623 transitions. [2022-01-11 06:32:19,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:32:19,503 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 [2022-01-11 06:32:19,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:19,507 INFO L225 Difference]: With dead ends: 403 [2022-01-11 06:32:19,507 INFO L226 Difference]: Without dead ends: 267 [2022-01-11 06:32:19,512 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 06:32:19,514 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 101 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:19,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 313 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:32:19,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-01-11 06:32:19,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2022-01-11 06:32:19,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.5303030303030303) internal successors, (404), 264 states have internal predecessors, (404), 0 states have call successors, (0), 0 states 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 06:32:19,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 404 transitions. [2022-01-11 06:32:19,542 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 404 transitions. Word has length 49 [2022-01-11 06:32:19,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:19,543 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 404 transitions. [2022-01-11 06:32:19,543 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) [2022-01-11 06:32:19,543 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 404 transitions. [2022-01-11 06:32:19,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-11 06:32:19,550 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:19,550 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] [2022-01-11 06:32:19,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:32:19,551 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:19,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:19,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1805967961, now seen corresponding path program 1 times [2022-01-11 06:32:19,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:19,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826259858] [2022-01-11 06:32:19,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:19,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:19,682 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 06:32:19,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:19,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826259858] [2022-01-11 06:32:19,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826259858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:19,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:19,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:32:19,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83847314] [2022-01-11 06:32:19,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:19,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:32:19,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:19,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:32:19,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:19,685 INFO L87 Difference]: Start difference. First operand 265 states and 404 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 06:32:19,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:19,704 INFO L93 Difference]: Finished difference Result 677 states and 1054 transitions. [2022-01-11 06:32:19,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:32:19,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2022-01-11 06:32:19,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:19,706 INFO L225 Difference]: With dead ends: 677 [2022-01-11 06:32:19,707 INFO L226 Difference]: Without dead ends: 439 [2022-01-11 06:32:19,711 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 06:32:19,715 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 96 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:19,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 298 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:32:19,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-01-11 06:32:19,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 437. [2022-01-11 06:32:19,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 1.5412844036697249) internal successors, (672), 436 states have internal predecessors, (672), 0 states have call successors, (0), 0 states 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 06:32:19,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 672 transitions. [2022-01-11 06:32:19,740 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 672 transitions. Word has length 50 [2022-01-11 06:32:19,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:19,740 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 672 transitions. [2022-01-11 06:32:19,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 06:32:19,740 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 672 transitions. [2022-01-11 06:32:19,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-11 06:32:19,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:19,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:32:19,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:32:19,742 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:19,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:19,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1245973427, now seen corresponding path program 1 times [2022-01-11 06:32:19,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:19,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611464068] [2022-01-11 06:32:19,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:19,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:19,995 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 06:32:19,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:19,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611464068] [2022-01-11 06:32:19,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611464068] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:19,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:19,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:32:19,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558976338] [2022-01-11 06:32:19,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:19,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:32:19,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:19,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:32:19,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:32:19,999 INFO L87 Difference]: Start difference. First operand 437 states and 672 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 06:32:20,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:20,702 INFO L93 Difference]: Finished difference Result 2909 states and 4549 transitions. [2022-01-11 06:32:20,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 06:32:20,702 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-01-11 06:32:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:20,716 INFO L225 Difference]: With dead ends: 2909 [2022-01-11 06:32:20,716 INFO L226 Difference]: Without dead ends: 2499 [2022-01-11 06:32:20,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-11 06:32:20,719 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 797 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:20,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [797 Valid, 1137 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 06:32:20,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2022-01-11 06:32:20,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 1529. [2022-01-11 06:32:20,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1528 states have (on average 1.557591623036649) internal successors, (2380), 1528 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states 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 06:32:20,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 2380 transitions. [2022-01-11 06:32:20,953 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 2380 transitions. Word has length 51 [2022-01-11 06:32:20,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:20,954 INFO L470 AbstractCegarLoop]: Abstraction has 1529 states and 2380 transitions. [2022-01-11 06:32:20,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 06:32:20,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 2380 transitions. [2022-01-11 06:32:20,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-11 06:32:20,955 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:20,955 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] [2022-01-11 06:32:20,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:32:20,955 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:20,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:20,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1361514681, now seen corresponding path program 1 times [2022-01-11 06:32:20,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:20,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874955884] [2022-01-11 06:32:20,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:20,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:20,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:21,081 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 06:32:21,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:21,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874955884] [2022-01-11 06:32:21,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874955884] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:21,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:21,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:32:21,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521379423] [2022-01-11 06:32:21,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:21,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:32:21,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:21,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:32:21,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:21,083 INFO L87 Difference]: Start difference. First operand 1529 states and 2380 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2022-01-11 06:32:21,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:21,449 INFO L93 Difference]: Finished difference Result 4117 states and 6414 transitions. [2022-01-11 06:32:21,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:32:21,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 [2022-01-11 06:32:21,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:21,459 INFO L225 Difference]: With dead ends: 4117 [2022-01-11 06:32:21,459 INFO L226 Difference]: Without dead ends: 2615 [2022-01-11 06:32:21,461 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 06:32:21,462 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 107 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:21,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 361 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:32:21,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2022-01-11 06:32:21,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2613. [2022-01-11 06:32:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2613 states, 2612 states have (on average 1.542113323124043) internal successors, (4028), 2612 states have internal predecessors, (4028), 0 states have call successors, (0), 0 states 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 06:32:21,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 4028 transitions. [2022-01-11 06:32:21,768 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 4028 transitions. Word has length 53 [2022-01-11 06:32:21,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:21,768 INFO L470 AbstractCegarLoop]: Abstraction has 2613 states and 4028 transitions. [2022-01-11 06:32:21,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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) [2022-01-11 06:32:21,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 4028 transitions. [2022-01-11 06:32:21,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-11 06:32:21,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:21,769 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] [2022-01-11 06:32:21,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:32:21,770 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:21,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:21,770 INFO L85 PathProgramCache]: Analyzing trace with hash -462025765, now seen corresponding path program 1 times [2022-01-11 06:32:21,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:21,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819252542] [2022-01-11 06:32:21,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:21,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:22,089 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 06:32:22,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:22,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819252542] [2022-01-11 06:32:22,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819252542] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:22,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:22,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 06:32:22,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043798986] [2022-01-11 06:32:22,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:22,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 06:32:22,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:22,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 06:32:22,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:32:22,092 INFO L87 Difference]: Start difference. First operand 2613 states and 4028 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) [2022-01-11 06:32:24,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:24,751 INFO L93 Difference]: Finished difference Result 13631 states and 21065 transitions. [2022-01-11 06:32:24,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 06:32:24,752 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 [2022-01-11 06:32:24,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:24,793 INFO L225 Difference]: With dead ends: 13631 [2022-01-11 06:32:24,793 INFO L226 Difference]: Without dead ends: 11045 [2022-01-11 06:32:24,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 06:32:24,799 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 858 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:24,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 1030 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 06:32:24,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11045 states. [2022-01-11 06:32:26,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11045 to 5197. [2022-01-11 06:32:26,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5197 states, 5196 states have (on average 1.5204003079291764) internal successors, (7900), 5196 states have internal predecessors, (7900), 0 states have call successors, (0), 0 states 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 06:32:26,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5197 states to 5197 states and 7900 transitions. [2022-01-11 06:32:26,242 INFO L78 Accepts]: Start accepts. Automaton has 5197 states and 7900 transitions. Word has length 53 [2022-01-11 06:32:26,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:26,243 INFO L470 AbstractCegarLoop]: Abstraction has 5197 states and 7900 transitions. [2022-01-11 06:32:26,243 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) [2022-01-11 06:32:26,243 INFO L276 IsEmpty]: Start isEmpty. Operand 5197 states and 7900 transitions. [2022-01-11 06:32:26,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-11 06:32:26,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:26,244 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] [2022-01-11 06:32:26,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:32:26,244 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:26,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:26,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1438883240, now seen corresponding path program 1 times [2022-01-11 06:32:26,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:26,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331092912] [2022-01-11 06:32:26,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:26,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:26,363 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 06:32:26,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:26,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331092912] [2022-01-11 06:32:26,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331092912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:26,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:26,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:32:26,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580026136] [2022-01-11 06:32:26,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:26,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:32:26,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:26,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:32:26,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:32:26,365 INFO L87 Difference]: Start difference. First operand 5197 states and 7900 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 06:32:29,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:29,299 INFO L93 Difference]: Finished difference Result 10118 states and 15319 transitions. [2022-01-11 06:32:29,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:32:29,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-11 06:32:29,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:29,335 INFO L225 Difference]: With dead ends: 10118 [2022-01-11 06:32:29,335 INFO L226 Difference]: Without dead ends: 10116 [2022-01-11 06:32:29,338 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 06:32:29,339 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 344 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:29,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 532 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:32:29,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10116 states. [2022-01-11 06:32:30,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10116 to 5453. [2022-01-11 06:32:30,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5453 states, 5452 states have (on average 1.495964783565664) internal successors, (8156), 5452 states have internal predecessors, (8156), 0 states have call successors, (0), 0 states 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 06:32:30,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 8156 transitions. [2022-01-11 06:32:30,937 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 8156 transitions. Word has length 54 [2022-01-11 06:32:30,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:30,937 INFO L470 AbstractCegarLoop]: Abstraction has 5453 states and 8156 transitions. [2022-01-11 06:32:30,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 06:32:30,937 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 8156 transitions. [2022-01-11 06:32:30,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-11 06:32:30,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:30,938 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] [2022-01-11 06:32:30,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:32:30,938 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:30,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:30,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1654697896, now seen corresponding path program 1 times [2022-01-11 06:32:30,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:30,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875303897] [2022-01-11 06:32:30,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:30,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:31,045 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 06:32:31,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:31,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875303897] [2022-01-11 06:32:31,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875303897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:31,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:31,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:32:31,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342134761] [2022-01-11 06:32:31,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:31,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:32:31,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:31,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:32:31,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:31,048 INFO L87 Difference]: Start difference. First operand 5453 states and 8156 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 06:32:33,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:33,179 INFO L93 Difference]: Finished difference Result 13563 states and 20288 transitions. [2022-01-11 06:32:33,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:32:33,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-11 06:32:33,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:33,194 INFO L225 Difference]: With dead ends: 13563 [2022-01-11 06:32:33,194 INFO L226 Difference]: Without dead ends: 8137 [2022-01-11 06:32:33,204 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 06:32:33,205 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 85 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:33,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 263 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:32:33,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8137 states. [2022-01-11 06:32:35,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8137 to 8071. [2022-01-11 06:32:35,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8071 states, 8070 states have (on average 1.4827757125154895) internal successors, (11966), 8070 states have internal predecessors, (11966), 0 states have call successors, (0), 0 states 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 06:32:35,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8071 states to 8071 states and 11966 transitions. [2022-01-11 06:32:35,208 INFO L78 Accepts]: Start accepts. Automaton has 8071 states and 11966 transitions. Word has length 55 [2022-01-11 06:32:35,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:35,210 INFO L470 AbstractCegarLoop]: Abstraction has 8071 states and 11966 transitions. [2022-01-11 06:32:35,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 06:32:35,210 INFO L276 IsEmpty]: Start isEmpty. Operand 8071 states and 11966 transitions. [2022-01-11 06:32:35,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 06:32:35,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:35,218 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:32:35,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:32:35,219 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:35,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:35,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1770675714, now seen corresponding path program 1 times [2022-01-11 06:32:35,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:35,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835587605] [2022-01-11 06:32:35,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:35,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:35,344 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:32:35,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:35,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835587605] [2022-01-11 06:32:35,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835587605] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:32:35,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:32:35,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:32:35,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900173156] [2022-01-11 06:32:35,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:32:35,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:32:35,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:32:35,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:32:35,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:32:35,346 INFO L87 Difference]: Start difference. First operand 8071 states and 11966 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 06:32:36,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:32:36,764 INFO L93 Difference]: Finished difference Result 13640 states and 20288 transitions. [2022-01-11 06:32:36,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:32:36,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-11 06:32:36,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:32:36,771 INFO L225 Difference]: With dead ends: 13640 [2022-01-11 06:32:36,772 INFO L226 Difference]: Without dead ends: 5598 [2022-01-11 06:32:36,781 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 06:32:36,781 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 88 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:32:36,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 316 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:32:36,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5598 states. [2022-01-11 06:32:38,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5598 to 5596. [2022-01-11 06:32:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5596 states, 5595 states have (on average 1.4802502234137622) internal successors, (8282), 5595 states have internal predecessors, (8282), 0 states have call successors, (0), 0 states 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 06:32:38,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5596 states to 5596 states and 8282 transitions. [2022-01-11 06:32:38,181 INFO L78 Accepts]: Start accepts. Automaton has 5596 states and 8282 transitions. Word has length 77 [2022-01-11 06:32:38,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:32:38,181 INFO L470 AbstractCegarLoop]: Abstraction has 5596 states and 8282 transitions. [2022-01-11 06:32:38,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 06:32:38,181 INFO L276 IsEmpty]: Start isEmpty. Operand 5596 states and 8282 transitions. [2022-01-11 06:32:38,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 06:32:38,188 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:32:38,188 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:32:38,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:32:38,188 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:32:38,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:32:38,189 INFO L85 PathProgramCache]: Analyzing trace with hash 207444561, now seen corresponding path program 1 times [2022-01-11 06:32:38,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:32:38,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408635630] [2022-01-11 06:32:38,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:38,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:32:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:38,391 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 06:32:38,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:32:38,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408635630] [2022-01-11 06:32:38,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408635630] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 06:32:38,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539741832] [2022-01-11 06:32:38,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:32:38,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 06:32:38,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:32:38,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 06:32:38,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 06:32:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:32:38,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-11 06:32:38,786 INFO L286 TraceCheckSpWp]: Computing forward predicates...