/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_BITWISE.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:06:42,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:06:42,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:06:42,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:06:42,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:06:42,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:06:42,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:06:42,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:06:42,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:06:42,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:06:42,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:06:42,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:06:42,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:06:42,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:06:42,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:06:42,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:06:42,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:06:42,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:06:42,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:06:42,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:06:42,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:06:42,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:06:42,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:06:42,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:06:42,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 13:06:42,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 13:06:42,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 13:06:42,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 13:06:42,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 13:06:42,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 13:06:42,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 13:06:42,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 13:06:42,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 13:06:42,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 13:06:42,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 13:06:42,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 13:06:42,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 13:06:42,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 13:06:42,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:06:42,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:06:42,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:06:42,552 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 13:06:42,573 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:06:42,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:06:42,574 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:06:42,574 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:06:42,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:06:42,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:06:42,575 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:06:42,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:06:42,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:06:42,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:06:42,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:06:42,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:06:42,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:06:42,579 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:06:42,579 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:06:42,579 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:06:42,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:06:42,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:06:42,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:06:42,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:06:42,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:06:42,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:06:42,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:06:42,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:06:42,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:06:42,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:06:42,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:06:42,582 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:06:42,582 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:06:42,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:06:42,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:06:42,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:06:42,584 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:06:42,584 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:06:42,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:06:42,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:06:42,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:06:42,795 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:06:42,795 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:06:42,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 13:06:42,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6778cb41a/354f8430496f40d780708057db082bd7/FLAG8e1f4f8a6 [2022-01-10 13:06:43,247 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:06:43,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 13:06:43,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6778cb41a/354f8430496f40d780708057db082bd7/FLAG8e1f4f8a6 [2022-01-10 13:06:43,272 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6778cb41a/354f8430496f40d780708057db082bd7 [2022-01-10 13:06:43,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:06:43,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:06:43,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:06:43,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:06:43,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:06:43,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:06:43" (1/1) ... [2022-01-10 13:06:43,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6856151f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:43, skipping insertion in model container [2022-01-10 13:06:43,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:06:43" (1/1) ... [2022-01-10 13:06:43,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:06:43,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:06:43,598 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8460,8473] [2022-01-10 13:06:43,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:06:43,671 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:06:43,721 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[8460,8473] [2022-01-10 13:06:43,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:06:43,783 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:06:43,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:43 WrapperNode [2022-01-10 13:06:43,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:06:43,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:06:43,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:06:43,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:06:43,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:43" (1/1) ... [2022-01-10 13:06:43,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:43" (1/1) ... [2022-01-10 13:06:43,831 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 751 [2022-01-10 13:06:43,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:06:43,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:06:43,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:06:43,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:06:43,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:43" (1/1) ... [2022-01-10 13:06:43,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:43" (1/1) ... [2022-01-10 13:06:43,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:43" (1/1) ... [2022-01-10 13:06:43,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:43" (1/1) ... [2022-01-10 13:06:43,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:43" (1/1) ... [2022-01-10 13:06:43,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:43" (1/1) ... [2022-01-10 13:06:43,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:43" (1/1) ... [2022-01-10 13:06:43,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:06:43,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:06:43,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:06:43,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:06:43,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:43" (1/1) ... [2022-01-10 13:06:43,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:06:43,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:06:43,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 13:06:43,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 13:06:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:06:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:06:43,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:06:43,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:06:44,048 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:06:44,049 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:06:44,623 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:06:44,633 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:06:44,633 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 13:06:44,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:06:44 BoogieIcfgContainer [2022-01-10 13:06:44,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:06:44,637 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:06:44,637 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:06:44,638 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:06:44,640 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:06:44" (1/1) ... [2022-01-10 13:06:45,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:06:45 BasicIcfg [2022-01-10 13:06:45,197 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:06:45,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:06:45,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:06:45,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:06:45,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:06:43" (1/4) ... [2022-01-10 13:06:45,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a11ce92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:06:45, skipping insertion in model container [2022-01-10 13:06:45,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:06:43" (2/4) ... [2022-01-10 13:06:45,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a11ce92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:06:45, skipping insertion in model container [2022-01-10 13:06:45,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:06:44" (3/4) ... [2022-01-10 13:06:45,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a11ce92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:06:45, skipping insertion in model container [2022-01-10 13:06:45,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:06:45" (4/4) ... [2022-01-10 13:06:45,203 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.cTransformedIcfg [2022-01-10 13:06:45,209 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:06:45,209 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 13:06:45,244 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:06:45,251 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 13:06:45,251 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 13:06:45,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 204 states have (on average 1.7205882352941178) internal successors, (351), 205 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 13:06:45,271 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:06:45,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:06:45,272 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:06:45,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:06:45,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1850163097, now seen corresponding path program 1 times [2022-01-10 13:06:45,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:06:45,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137013914] [2022-01-10 13:06:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:06:45,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:06:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:06:45,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:06:45,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:06:45,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137013914] [2022-01-10 13:06:45,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137013914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:06:45,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:06:45,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:06:45,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743966568] [2022-01-10 13:06:45,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:06:45,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:06:45,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:06:45,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:06:45,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:06:45,853 INFO L87 Difference]: Start difference. First operand has 206 states, 204 states have (on average 1.7205882352941178) internal successors, (351), 205 states have internal predecessors, (351), 0 states have call successors, (0), 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 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:46,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:06:46,906 INFO L93 Difference]: Finished difference Result 417 states and 687 transitions. [2022-01-10 13:06:46,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:06:46,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-01-10 13:06:46,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:06:46,923 INFO L225 Difference]: With dead ends: 417 [2022-01-10 13:06:46,923 INFO L226 Difference]: Without dead ends: 314 [2022-01-10 13:06:46,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:06:46,929 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 172 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:06:46,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 655 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 13:06:46,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-01-10 13:06:47,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2022-01-10 13:06:47,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.504823151125402) internal successors, (468), 311 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:47,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 468 transitions. [2022-01-10 13:06:47,049 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 468 transitions. Word has length 79 [2022-01-10 13:06:47,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:06:47,050 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 468 transitions. [2022-01-10 13:06:47,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:47,050 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 468 transitions. [2022-01-10 13:06:47,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 13:06:47,056 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:06:47,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:06:47,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:06:47,057 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:06:47,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:06:47,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1521467084, now seen corresponding path program 1 times [2022-01-10 13:06:47,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:06:47,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350048745] [2022-01-10 13:06:47,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:06:47,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:06:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:06:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:06:47,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:06:47,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350048745] [2022-01-10 13:06:47,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350048745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:06:47,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:06:47,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:06:47,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293992270] [2022-01-10 13:06:47,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:06:47,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:06:47,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:06:47,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:06:47,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:06:47,300 INFO L87 Difference]: Start difference. First operand 312 states and 468 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:47,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:06:47,412 INFO L93 Difference]: Finished difference Result 522 states and 800 transitions. [2022-01-10 13:06:47,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 13:06:47,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-01-10 13:06:47,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:06:47,415 INFO L225 Difference]: With dead ends: 522 [2022-01-10 13:06:47,415 INFO L226 Difference]: Without dead ends: 520 [2022-01-10 13:06:47,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:06:47,419 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 428 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:06:47,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [428 Valid, 823 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:06:47,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-01-10 13:06:47,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 314. [2022-01-10 13:06:47,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 1.5015974440894568) internal successors, (470), 313 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:47,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 470 transitions. [2022-01-10 13:06:47,487 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 470 transitions. Word has length 80 [2022-01-10 13:06:47,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:06:47,488 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 470 transitions. [2022-01-10 13:06:47,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:47,488 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 470 transitions. [2022-01-10 13:06:47,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 13:06:47,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:06:47,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:06:47,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:06:47,494 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:06:47,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:06:47,498 INFO L85 PathProgramCache]: Analyzing trace with hash 80170724, now seen corresponding path program 1 times [2022-01-10 13:06:47,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:06:47,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245761644] [2022-01-10 13:06:47,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:06:47,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:06:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:06:47,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:06:47,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:06:47,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245761644] [2022-01-10 13:06:47,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245761644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:06:47,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:06:47,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 13:06:47,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316400738] [2022-01-10 13:06:47,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:06:47,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 13:06:47,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:06:47,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 13:06:47,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:06:47,709 INFO L87 Difference]: Start difference. First operand 314 states and 470 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:48,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:06:48,675 INFO L93 Difference]: Finished difference Result 2519 states and 3950 transitions. [2022-01-10 13:06:48,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 13:06:48,676 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 13:06:48,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:06:48,682 INFO L225 Difference]: With dead ends: 2519 [2022-01-10 13:06:48,683 INFO L226 Difference]: Without dead ends: 2281 [2022-01-10 13:06:48,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-01-10 13:06:48,685 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 2817 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2817 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 13:06:48,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2817 Valid, 2403 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 13:06:48,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2281 states. [2022-01-10 13:06:48,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2281 to 1238. [2022-01-10 13:06:48,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 1237 states have (on average 1.5545675020210186) internal successors, (1923), 1237 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:48,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1923 transitions. [2022-01-10 13:06:48,886 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1923 transitions. Word has length 81 [2022-01-10 13:06:48,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:06:48,886 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1923 transitions. [2022-01-10 13:06:48,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:48,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1923 transitions. [2022-01-10 13:06:48,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 13:06:48,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:06:48,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:06:48,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:06:48,888 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:06:48,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:06:48,889 INFO L85 PathProgramCache]: Analyzing trace with hash -174422375, now seen corresponding path program 1 times [2022-01-10 13:06:48,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:06:48,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342464391] [2022-01-10 13:06:48,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:06:48,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:06:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:06:49,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:06:49,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:06:49,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342464391] [2022-01-10 13:06:49,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342464391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:06:49,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:06:49,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 13:06:49,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259302278] [2022-01-10 13:06:49,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:06:49,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 13:06:49,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:06:49,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 13:06:49,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:06:49,145 INFO L87 Difference]: Start difference. First operand 1238 states and 1923 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:51,238 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:06:53,653 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:06:53,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:06:53,663 INFO L93 Difference]: Finished difference Result 2841 states and 4464 transitions. [2022-01-10 13:06:53,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 13:06:53,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 13:06:53,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:06:53,824 INFO L225 Difference]: With dead ends: 2841 [2022-01-10 13:06:53,824 INFO L226 Difference]: Without dead ends: 2007 [2022-01-10 13:06:53,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 13:06:53,828 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 302 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-01-10 13:06:53,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 606 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2022-01-10 13:06:53,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2022-01-10 13:06:54,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1995. [2022-01-10 13:06:54,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1995 states, 1994 states have (on average 1.559679037111334) internal successors, (3110), 1994 states have internal predecessors, (3110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:54,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 3110 transitions. [2022-01-10 13:06:54,163 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 3110 transitions. Word has length 82 [2022-01-10 13:06:54,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:06:54,163 INFO L470 AbstractCegarLoop]: Abstraction has 1995 states and 3110 transitions. [2022-01-10 13:06:54,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:54,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 3110 transitions. [2022-01-10 13:06:54,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 13:06:54,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:06:54,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:06:54,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:06:54,165 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:06:54,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:06:54,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1167663005, now seen corresponding path program 1 times [2022-01-10 13:06:54,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:06:54,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519793871] [2022-01-10 13:06:54,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:06:54,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:06:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:06:54,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:06:54,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:06:54,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519793871] [2022-01-10 13:06:54,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519793871] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:06:54,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:06:54,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:06:54,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933509059] [2022-01-10 13:06:54,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:06:54,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:06:54,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:06:54,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:06:54,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:06:54,263 INFO L87 Difference]: Start difference. First operand 1995 states and 3110 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:54,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:06:54,662 INFO L93 Difference]: Finished difference Result 3691 states and 5786 transitions. [2022-01-10 13:06:54,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:06:54,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 13:06:54,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:06:54,669 INFO L225 Difference]: With dead ends: 3691 [2022-01-10 13:06:54,669 INFO L226 Difference]: Without dead ends: 2269 [2022-01-10 13:06:54,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:06:54,672 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 210 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:06:54,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 572 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:06:54,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2022-01-10 13:06:55,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 2267. [2022-01-10 13:06:55,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2267 states, 2266 states have (on average 1.5445719329214476) internal successors, (3500), 2266 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:55,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 3500 transitions. [2022-01-10 13:06:55,035 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 3500 transitions. Word has length 83 [2022-01-10 13:06:55,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:06:55,035 INFO L470 AbstractCegarLoop]: Abstraction has 2267 states and 3500 transitions. [2022-01-10 13:06:55,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:55,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 3500 transitions. [2022-01-10 13:06:55,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 13:06:55,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:06:55,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:06:55,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:06:55,037 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:06:55,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:06:55,037 INFO L85 PathProgramCache]: Analyzing trace with hash -424540830, now seen corresponding path program 1 times [2022-01-10 13:06:55,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:06:55,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383400643] [2022-01-10 13:06:55,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:06:55,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:06:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:06:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:06:55,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:06:55,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383400643] [2022-01-10 13:06:55,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383400643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:06:55,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:06:55,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:06:55,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135987861] [2022-01-10 13:06:55,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:06:55,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:06:55,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:06:55,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:06:55,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:06:55,134 INFO L87 Difference]: Start difference. First operand 2267 states and 3500 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:55,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:06:55,709 INFO L93 Difference]: Finished difference Result 5502 states and 8549 transitions. [2022-01-10 13:06:55,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:06:55,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 13:06:55,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:06:55,719 INFO L225 Difference]: With dead ends: 5502 [2022-01-10 13:06:55,719 INFO L226 Difference]: Without dead ends: 3486 [2022-01-10 13:06:55,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:06:55,726 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 202 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:06:55,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 558 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:06:55,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2022-01-10 13:06:56,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 3475. [2022-01-10 13:06:56,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3475 states, 3474 states have (on average 1.5296488198042602) internal successors, (5314), 3474 states have internal predecessors, (5314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:56,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3475 states to 3475 states and 5314 transitions. [2022-01-10 13:06:56,279 INFO L78 Accepts]: Start accepts. Automaton has 3475 states and 5314 transitions. Word has length 83 [2022-01-10 13:06:56,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:06:56,279 INFO L470 AbstractCegarLoop]: Abstraction has 3475 states and 5314 transitions. [2022-01-10 13:06:56,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:56,279 INFO L276 IsEmpty]: Start isEmpty. Operand 3475 states and 5314 transitions. [2022-01-10 13:06:56,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 13:06:56,281 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:06:56,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:06:56,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:06:56,281 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:06:56,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:06:56,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1328512445, now seen corresponding path program 1 times [2022-01-10 13:06:56,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:06:56,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039002268] [2022-01-10 13:06:56,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:06:56,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:06:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:06:56,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:06:56,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:06:56,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039002268] [2022-01-10 13:06:56,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039002268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:06:56,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:06:56,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 13:06:56,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225635962] [2022-01-10 13:06:56,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:06:56,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 13:06:56,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:06:56,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 13:06:56,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 13:06:56,603 INFO L87 Difference]: Start difference. First operand 3475 states and 5314 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:06:58,975 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:07:02,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:07:04,374 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:07:11,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:07:13,827 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:07:15,966 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 13:07:17,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:07:17,879 INFO L93 Difference]: Finished difference Result 27203 states and 41848 transitions. [2022-01-10 13:07:17,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 13:07:17,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 13:07:17,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:07:17,961 INFO L225 Difference]: With dead ends: 27203 [2022-01-10 13:07:17,961 INFO L226 Difference]: Without dead ends: 23844 [2022-01-10 13:07:17,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 13:07:17,971 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 1012 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 16 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-01-10 13:07:17,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1012 Valid, 1551 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1019 Invalid, 6 Unknown, 0 Unchecked, 15.4s Time] [2022-01-10 13:07:17,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23844 states. [2022-01-10 13:07:21,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23844 to 12302. [2022-01-10 13:07:21,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12302 states, 12301 states have (on average 1.5253231444598) internal successors, (18763), 12301 states have internal predecessors, (18763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:07:21,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12302 states to 12302 states and 18763 transitions. [2022-01-10 13:07:21,592 INFO L78 Accepts]: Start accepts. Automaton has 12302 states and 18763 transitions. Word has length 83 [2022-01-10 13:07:21,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:07:21,592 INFO L470 AbstractCegarLoop]: Abstraction has 12302 states and 18763 transitions. [2022-01-10 13:07:21,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:07:21,592 INFO L276 IsEmpty]: Start isEmpty. Operand 12302 states and 18763 transitions. [2022-01-10 13:07:21,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 13:07:21,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:21,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:07:21,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:07:21,596 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:21,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:21,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1113630849, now seen corresponding path program 1 times [2022-01-10 13:07:21,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:21,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282431992] [2022-01-10 13:07:21,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:21,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:21,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:07:21,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:21,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282431992] [2022-01-10 13:07:21,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282431992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:21,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:21,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:07:21,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668649103] [2022-01-10 13:07:21,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:21,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:07:21,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:21,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:07:21,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:07:21,681 INFO L87 Difference]: Start difference. First operand 12302 states and 18763 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:07:28,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:07:28,241 INFO L93 Difference]: Finished difference Result 34033 states and 51831 transitions. [2022-01-10 13:07:28,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:07:28,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 13:07:28,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:07:28,277 INFO L225 Difference]: With dead ends: 34033 [2022-01-10 13:07:28,277 INFO L226 Difference]: Without dead ends: 22617 [2022-01-10 13:07:28,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:07:28,292 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 177 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:07:28,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 549 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:07:28,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22617 states. [2022-01-10 13:07:34,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22617 to 22581. [2022-01-10 13:07:34,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22581 states, 22580 states have (on average 1.5031000885739592) internal successors, (33940), 22580 states have internal predecessors, (33940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:07:34,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22581 states to 22581 states and 33940 transitions. [2022-01-10 13:07:34,700 INFO L78 Accepts]: Start accepts. Automaton has 22581 states and 33940 transitions. Word has length 83 [2022-01-10 13:07:34,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:07:34,700 INFO L470 AbstractCegarLoop]: Abstraction has 22581 states and 33940 transitions. [2022-01-10 13:07:34,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:07:34,701 INFO L276 IsEmpty]: Start isEmpty. Operand 22581 states and 33940 transitions. [2022-01-10 13:07:34,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 13:07:34,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:34,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:07:34,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:07:34,707 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:34,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:34,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1495673847, now seen corresponding path program 1 times [2022-01-10 13:07:34,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:34,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440011047] [2022-01-10 13:07:34,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:34,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:34,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:07:34,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:34,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440011047] [2022-01-10 13:07:34,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440011047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:34,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:34,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:07:34,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351954047] [2022-01-10 13:07:34,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:34,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:07:34,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:34,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:07:34,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:07:34,786 INFO L87 Difference]: Start difference. First operand 22581 states and 33940 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:07:41,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:07:41,303 INFO L93 Difference]: Finished difference Result 32214 states and 48319 transitions. [2022-01-10 13:07:41,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:07:41,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 13:07:41,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:07:41,342 INFO L225 Difference]: With dead ends: 32214 [2022-01-10 13:07:41,342 INFO L226 Difference]: Without dead ends: 23476 [2022-01-10 13:07:41,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:07:41,354 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 168 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:07:41,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 551 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:07:41,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23476 states. [2022-01-10 13:07:47,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23476 to 23474. [2022-01-10 13:07:48,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23474 states, 23473 states have (on average 1.4831082520342522) internal successors, (34813), 23473 states have internal predecessors, (34813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:07:48,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23474 states to 23474 states and 34813 transitions. [2022-01-10 13:07:48,062 INFO L78 Accepts]: Start accepts. Automaton has 23474 states and 34813 transitions. Word has length 83 [2022-01-10 13:07:48,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:07:48,063 INFO L470 AbstractCegarLoop]: Abstraction has 23474 states and 34813 transitions. [2022-01-10 13:07:48,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:07:48,063 INFO L276 IsEmpty]: Start isEmpty. Operand 23474 states and 34813 transitions. [2022-01-10 13:07:48,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 13:07:48,069 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:07:48,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:07:48,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:07:48,069 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:07:48,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:07:48,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1210165058, now seen corresponding path program 1 times [2022-01-10 13:07:48,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:07:48,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140078069] [2022-01-10 13:07:48,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:07:48,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:07:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:07:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:07:48,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:07:48,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140078069] [2022-01-10 13:07:48,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140078069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:07:48,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:07:48,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:07:48,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139121593] [2022-01-10 13:07:48,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:07:48,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:07:48,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:07:48,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:07:48,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:07:48,163 INFO L87 Difference]: Start difference. First operand 23474 states and 34813 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)