/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_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:59:24,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:59:24,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:59:24,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:59:24,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:59:24,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:59:24,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:59:24,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:59:24,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:59:24,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:59:24,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:59:24,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:59:24,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:59:24,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:59:24,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:59:24,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:59:24,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:59:24,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:59:24,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:59:24,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:59:24,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:59:24,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:59:24,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:59:24,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:59:24,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:59:24,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:59:24,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:59:24,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:59:24,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:59:24,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:59:24,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:59:24,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:59:24,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:59:24,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:59:24,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:59:24,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:59:24,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:59:24,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:59:24,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:59:24,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:59:24,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:59:24,593 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 12:59:24,629 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:59:24,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:59:24,629 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:59:24,629 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:59:24,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:59:24,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:59:24,630 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:59:24,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:59:24,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:59:24,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:59:24,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:59:24,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:59:24,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:59:24,631 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:59:24,631 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:59:24,632 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:59:24,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:59:24,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:59:24,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:59:24,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:59:24,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:59:24,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:59:24,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:59:24,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:59:24,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:59:24,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:59:24,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:59:24,633 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:59:24,633 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:59:24,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:59:24,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:59:24,633 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:59:24,634 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:59:24,634 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:59:24,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:59:24,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:59:24,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:59:24,930 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:59:24,931 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:59:24,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 12:59:25,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3282b881e/11f0c91b2d0645fdae22ca2f5995bc2e/FLAG2a7190550 [2022-01-10 12:59:25,424 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:59:25,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-01-10 12:59:25,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3282b881e/11f0c91b2d0645fdae22ca2f5995bc2e/FLAG2a7190550 [2022-01-10 12:59:25,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3282b881e/11f0c91b2d0645fdae22ca2f5995bc2e [2022-01-10 12:59:25,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:59:25,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:59:25,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:59:25,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:59:25,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:59:25,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:59:25" (1/1) ... [2022-01-10 12:59:25,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b522d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:59:25, skipping insertion in model container [2022-01-10 12:59:25,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:59:25" (1/1) ... [2022-01-10 12:59:25,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:59:25,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:59:26,141 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_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12986,12999] [2022-01-10 12:59:26,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:59:26,231 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:59:26,303 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_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12986,12999] [2022-01-10 12:59:26,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:59:26,361 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:59:26,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:59:26 WrapperNode [2022-01-10 12:59:26,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:59:26,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:59:26,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:59:26,363 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:59:26,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:59:26" (1/1) ... [2022-01-10 12:59:26,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:59:26" (1/1) ... [2022-01-10 12:59:26,454 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1277 [2022-01-10 12:59:26,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:59:26,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:59:26,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:59:26,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:59:26,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:59:26" (1/1) ... [2022-01-10 12:59:26,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:59:26" (1/1) ... [2022-01-10 12:59:26,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:59:26" (1/1) ... [2022-01-10 12:59:26,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:59:26" (1/1) ... [2022-01-10 12:59:26,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:59:26" (1/1) ... [2022-01-10 12:59:26,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:59:26" (1/1) ... [2022-01-10 12:59:26,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:59:26" (1/1) ... [2022-01-10 12:59:26,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:59:26,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:59:26,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:59:26,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:59:26,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:59:26" (1/1) ... [2022-01-10 12:59:26,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:59:26,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:59:26,589 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 12:59:26,607 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 12:59:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:59:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:59:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:59:26,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:59:26,825 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:59:26,827 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:59:27,744 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:59:27,760 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:59:27,760 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 12:59:27,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:59:27 BoogieIcfgContainer [2022-01-10 12:59:27,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:59:27,765 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:59:27,765 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:59:27,766 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:59:27,769 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:59:27" (1/1) ... [2022-01-10 12:59:28,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:59:28 BasicIcfg [2022-01-10 12:59:28,361 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:59:28,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:59:28,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:59:28,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:59:28,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:59:25" (1/4) ... [2022-01-10 12:59:28,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16075a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:59:28, skipping insertion in model container [2022-01-10 12:59:28,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:59:26" (2/4) ... [2022-01-10 12:59:28,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16075a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:59:28, skipping insertion in model container [2022-01-10 12:59:28,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:59:27" (3/4) ... [2022-01-10 12:59:28,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16075a12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:59:28, skipping insertion in model container [2022-01-10 12:59:28,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:59:28" (4/4) ... [2022-01-10 12:59:28,370 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-10 12:59:28,378 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:59:28,378 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 12:59:28,431 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:59:28,440 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 12:59:28,441 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 12:59:28,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 326 states, 324 states have (on average 1.7962962962962963) internal successors, (582), 325 states have internal predecessors, (582), 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 12:59:28,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 12:59:28,495 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:59:28,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:59:28,496 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:59:28,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:59:28,507 INFO L85 PathProgramCache]: Analyzing trace with hash 107108232, now seen corresponding path program 1 times [2022-01-10 12:59:28,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:59:28,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004705883] [2022-01-10 12:59:28,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:59:28,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:59:28,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:59:29,208 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 12:59:29,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:59:29,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004705883] [2022-01-10 12:59:29,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004705883] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:59:29,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:59:29,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:59:29,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119316338] [2022-01-10 12:59:29,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:59:29,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:59:29,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:59:29,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:59:29,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:59:29,242 INFO L87 Difference]: Start difference. First operand has 326 states, 324 states have (on average 1.7962962962962963) internal successors, (582), 325 states have internal predecessors, (582), 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 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 12:59:31,350 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 12:59:31,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:59:31,605 INFO L93 Difference]: Finished difference Result 589 states and 1021 transitions. [2022-01-10 12:59:31,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:59:31,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 110 [2022-01-10 12:59:31,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:59:31,625 INFO L225 Difference]: With dead ends: 589 [2022-01-10 12:59:31,625 INFO L226 Difference]: Without dead ends: 446 [2022-01-10 12:59:31,633 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 12:59:31,639 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 232 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:59:31,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 1075 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 12:59:31,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-01-10 12:59:31,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 443. [2022-01-10 12:59:31,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.660633484162896) internal successors, (734), 442 states have internal predecessors, (734), 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 12:59:31,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 734 transitions. [2022-01-10 12:59:31,730 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 734 transitions. Word has length 110 [2022-01-10 12:59:31,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:59:31,732 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 734 transitions. [2022-01-10 12:59:31,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 12:59:31,732 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 734 transitions. [2022-01-10 12:59:31,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 12:59:31,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:59:31,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:59:31,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:59:31,737 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:59:31,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:59:31,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1980250322, now seen corresponding path program 1 times [2022-01-10 12:59:31,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:59:31,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720720295] [2022-01-10 12:59:31,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:59:31,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:59:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:59:32,064 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 12:59:32,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:59:32,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720720295] [2022-01-10 12:59:32,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720720295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:59:32,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:59:32,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:59:32,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354629681] [2022-01-10 12:59:32,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:59:32,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:59:32,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:59:32,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:59:32,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:59:32,074 INFO L87 Difference]: Start difference. First operand 443 states and 734 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 12:59:32,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:59:32,262 INFO L93 Difference]: Finished difference Result 1263 states and 2085 transitions. [2022-01-10 12:59:32,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:59:32,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 113 [2022-01-10 12:59:32,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:59:32,272 INFO L225 Difference]: With dead ends: 1263 [2022-01-10 12:59:32,272 INFO L226 Difference]: Without dead ends: 867 [2022-01-10 12:59:32,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 12:59:32,277 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 1436 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:59:32,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1436 Valid, 1052 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:59:32,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2022-01-10 12:59:32,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 865. [2022-01-10 12:59:32,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 864 states have (on average 1.6516203703703705) internal successors, (1427), 864 states have internal predecessors, (1427), 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 12:59:32,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1427 transitions. [2022-01-10 12:59:32,339 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1427 transitions. Word has length 113 [2022-01-10 12:59:32,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:59:32,341 INFO L470 AbstractCegarLoop]: Abstraction has 865 states and 1427 transitions. [2022-01-10 12:59:32,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 12:59:32,342 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1427 transitions. [2022-01-10 12:59:32,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 12:59:32,345 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:59:32,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:59:32,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:59:32,346 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:59:32,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:59:32,346 INFO L85 PathProgramCache]: Analyzing trace with hash -29901951, now seen corresponding path program 1 times [2022-01-10 12:59:32,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:59:32,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585887032] [2022-01-10 12:59:32,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:59:32,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:59:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:59:32,557 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 12:59:32,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:59:32,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585887032] [2022-01-10 12:59:32,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585887032] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:59:32,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:59:32,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:59:32,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460403175] [2022-01-10 12:59:32,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:59:32,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:59:32,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:59:32,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:59:32,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:59:32,565 INFO L87 Difference]: Start difference. First operand 865 states and 1427 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 12:59:32,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:59:32,643 INFO L93 Difference]: Finished difference Result 1339 states and 2232 transitions. [2022-01-10 12:59:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:59:32,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 115 [2022-01-10 12:59:32,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:59:32,653 INFO L225 Difference]: With dead ends: 1339 [2022-01-10 12:59:32,653 INFO L226 Difference]: Without dead ends: 1076 [2022-01-10 12:59:32,654 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 12:59:32,654 INFO L933 BasicCegarLoop]: 705 mSDtfsCounter, 205 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:59:32,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 1204 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:59:32,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2022-01-10 12:59:32,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1074. [2022-01-10 12:59:32,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 1073 states have (on average 1.6607642124883504) internal successors, (1782), 1073 states have internal predecessors, (1782), 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 12:59:32,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1782 transitions. [2022-01-10 12:59:32,707 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1782 transitions. Word has length 115 [2022-01-10 12:59:32,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:59:32,708 INFO L470 AbstractCegarLoop]: Abstraction has 1074 states and 1782 transitions. [2022-01-10 12:59:32,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 12:59:32,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1782 transitions. [2022-01-10 12:59:32,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 12:59:32,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:59:32,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:32,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:59:32,710 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:59:32,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:59:32,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1490476553, now seen corresponding path program 1 times [2022-01-10 12:59:32,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:59:32,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690661749] [2022-01-10 12:59:32,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:59:32,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:59:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:59:32,932 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 12:59:32,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:59:32,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690661749] [2022-01-10 12:59:32,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690661749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:59:32,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:59:32,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:59:32,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654151128] [2022-01-10 12:59:32,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:59:32,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:59:32,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:59:32,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:59:32,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:59:32,935 INFO L87 Difference]: Start difference. First operand 1074 states and 1782 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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 12:59:33,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:59:33,298 INFO L93 Difference]: Finished difference Result 4193 states and 6947 transitions. [2022-01-10 12:59:33,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:59:33,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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 115 [2022-01-10 12:59:33,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:59:33,317 INFO L225 Difference]: With dead ends: 4193 [2022-01-10 12:59:33,317 INFO L226 Difference]: Without dead ends: 3131 [2022-01-10 12:59:33,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:59:33,325 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 2131 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2131 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:59:33,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2131 Valid, 1717 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:59:33,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2022-01-10 12:59:33,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 2108. [2022-01-10 12:59:33,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2107 states have (on average 1.6502135738016137) internal successors, (3477), 2107 states have internal predecessors, (3477), 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 12:59:33,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3477 transitions. [2022-01-10 12:59:33,494 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3477 transitions. Word has length 115 [2022-01-10 12:59:33,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:59:33,494 INFO L470 AbstractCegarLoop]: Abstraction has 2108 states and 3477 transitions. [2022-01-10 12:59:33,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 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 12:59:33,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3477 transitions. [2022-01-10 12:59:33,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 12:59:33,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:59:33,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:59:33,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:59:33,498 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:59:33,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:59:33,499 INFO L85 PathProgramCache]: Analyzing trace with hash 795440578, now seen corresponding path program 1 times [2022-01-10 12:59:33,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:59:33,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018850617] [2022-01-10 12:59:33,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:59:33,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:59:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:59:33,570 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 12:59:33,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:59:33,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018850617] [2022-01-10 12:59:33,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018850617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:59:33,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:59:33,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:59:33,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710228892] [2022-01-10 12:59:33,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:59:33,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:59:33,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:59:33,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:59:33,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:59:33,572 INFO L87 Difference]: Start difference. First operand 2108 states and 3477 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 12:59:33,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:59:33,845 INFO L93 Difference]: Finished difference Result 6267 states and 10333 transitions. [2022-01-10 12:59:33,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:59:33,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 117 [2022-01-10 12:59:33,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:59:33,864 INFO L225 Difference]: With dead ends: 6267 [2022-01-10 12:59:33,865 INFO L226 Difference]: Without dead ends: 4188 [2022-01-10 12:59:33,869 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 12:59:33,870 INFO L933 BasicCegarLoop]: 1046 mSDtfsCounter, 514 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:59:33,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [514 Valid, 1567 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:59:33,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4188 states. [2022-01-10 12:59:34,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4188 to 2122. [2022-01-10 12:59:34,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2121 states have (on average 1.6473361621876474) internal successors, (3494), 2121 states have internal predecessors, (3494), 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 12:59:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3494 transitions. [2022-01-10 12:59:34,065 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3494 transitions. Word has length 117 [2022-01-10 12:59:34,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:59:34,066 INFO L470 AbstractCegarLoop]: Abstraction has 2122 states and 3494 transitions. [2022-01-10 12:59:34,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 12:59:34,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3494 transitions. [2022-01-10 12:59:34,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-10 12:59:34,081 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:59:34,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:59:34,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:59:34,081 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:59:34,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:59:34,082 INFO L85 PathProgramCache]: Analyzing trace with hash 2119749185, now seen corresponding path program 1 times [2022-01-10 12:59:34,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:59:34,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458229426] [2022-01-10 12:59:34,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:59:34,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:59:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:59:34,279 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 12:59:34,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:59:34,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458229426] [2022-01-10 12:59:34,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458229426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:59:34,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:59:34,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:59:34,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680431340] [2022-01-10 12:59:34,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:59:34,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:59:34,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:59:34,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:59:34,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:59:34,281 INFO L87 Difference]: Start difference. First operand 2122 states and 3494 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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 12:59:34,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:59:34,732 INFO L93 Difference]: Finished difference Result 6169 states and 10154 transitions. [2022-01-10 12:59:34,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:59:34,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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 118 [2022-01-10 12:59:34,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:59:34,750 INFO L225 Difference]: With dead ends: 6169 [2022-01-10 12:59:34,750 INFO L226 Difference]: Without dead ends: 4167 [2022-01-10 12:59:34,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 12:59:34,755 INFO L933 BasicCegarLoop]: 731 mSDtfsCounter, 1242 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:59:34,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1242 Valid, 1235 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:59:34,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2022-01-10 12:59:35,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 4165. [2022-01-10 12:59:35,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4165 states, 4164 states have (on average 1.6392891450528337) internal successors, (6826), 4164 states have internal predecessors, (6826), 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 12:59:35,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4165 states to 4165 states and 6826 transitions. [2022-01-10 12:59:35,138 INFO L78 Accepts]: Start accepts. Automaton has 4165 states and 6826 transitions. Word has length 118 [2022-01-10 12:59:35,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:59:35,139 INFO L470 AbstractCegarLoop]: Abstraction has 4165 states and 6826 transitions. [2022-01-10 12:59:35,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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 12:59:35,139 INFO L276 IsEmpty]: Start isEmpty. Operand 4165 states and 6826 transitions. [2022-01-10 12:59:35,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 12:59:35,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:59:35,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:59:35,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:59:35,145 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:59:35,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:59:35,146 INFO L85 PathProgramCache]: Analyzing trace with hash 83400971, now seen corresponding path program 1 times [2022-01-10 12:59:35,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:59:35,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704548656] [2022-01-10 12:59:35,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:59:35,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:59:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:59:35,247 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 12:59:35,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:59:35,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704548656] [2022-01-10 12:59:35,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704548656] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:59:35,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:59:35,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:59:35,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326057146] [2022-01-10 12:59:35,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:59:35,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:59:35,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:59:35,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:59:35,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:59:35,250 INFO L87 Difference]: Start difference. First operand 4165 states and 6826 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 12:59:36,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:59:36,199 INFO L93 Difference]: Finished difference Result 14547 states and 23687 transitions. [2022-01-10 12:59:36,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:59:36,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 119 [2022-01-10 12:59:36,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:59:36,249 INFO L225 Difference]: With dead ends: 14547 [2022-01-10 12:59:36,249 INFO L226 Difference]: Without dead ends: 10941 [2022-01-10 12:59:36,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 12:59:36,260 INFO L933 BasicCegarLoop]: 1223 mSDtfsCounter, 1206 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 2648 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:59:36,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1206 Valid, 2648 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:59:36,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10941 states. [2022-01-10 12:59:36,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10941 to 4653. [2022-01-10 12:59:36,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4653 states, 4652 states have (on average 1.6453138435081684) internal successors, (7654), 4652 states have internal predecessors, (7654), 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 12:59:36,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4653 states to 4653 states and 7654 transitions. [2022-01-10 12:59:36,794 INFO L78 Accepts]: Start accepts. Automaton has 4653 states and 7654 transitions. Word has length 119 [2022-01-10 12:59:36,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:59:36,794 INFO L470 AbstractCegarLoop]: Abstraction has 4653 states and 7654 transitions. [2022-01-10 12:59:36,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 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 12:59:36,794 INFO L276 IsEmpty]: Start isEmpty. Operand 4653 states and 7654 transitions. [2022-01-10 12:59:36,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 12:59:36,801 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:59:36,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:59:36,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:59:36,802 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:59:36,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:59:36,802 INFO L85 PathProgramCache]: Analyzing trace with hash 269208826, now seen corresponding path program 1 times [2022-01-10 12:59:36,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:59:36,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752816951] [2022-01-10 12:59:36,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:59:36,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:59:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:59:37,070 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 12:59:37,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:59:37,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752816951] [2022-01-10 12:59:37,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752816951] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:59:37,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:59:37,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:59:37,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961117160] [2022-01-10 12:59:37,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:59:37,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:59:37,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:59:37,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:59:37,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:59:37,073 INFO L87 Difference]: Start difference. First operand 4653 states and 7654 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 12:59:37,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:59:37,733 INFO L93 Difference]: Finished difference Result 9885 states and 16364 transitions. [2022-01-10 12:59:37,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:59:37,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 120 [2022-01-10 12:59:37,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:59:37,756 INFO L225 Difference]: With dead ends: 9885 [2022-01-10 12:59:37,757 INFO L226 Difference]: Without dead ends: 7167 [2022-01-10 12:59:37,765 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 12:59:37,766 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 197 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:59:37,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 1038 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:59:37,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7167 states. [2022-01-10 12:59:38,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7167 to 7141. [2022-01-10 12:59:38,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7141 states, 7140 states have (on average 1.645658263305322) internal successors, (11750), 7140 states have internal predecessors, (11750), 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 12:59:38,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7141 states to 7141 states and 11750 transitions. [2022-01-10 12:59:38,433 INFO L78 Accepts]: Start accepts. Automaton has 7141 states and 11750 transitions. Word has length 120 [2022-01-10 12:59:38,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:59:38,433 INFO L470 AbstractCegarLoop]: Abstraction has 7141 states and 11750 transitions. [2022-01-10 12:59:38,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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 12:59:38,434 INFO L276 IsEmpty]: Start isEmpty. Operand 7141 states and 11750 transitions. [2022-01-10 12:59:38,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 12:59:38,441 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:59:38,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:38,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:59:38,442 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:59:38,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:59:38,442 INFO L85 PathProgramCache]: Analyzing trace with hash 764150565, now seen corresponding path program 1 times [2022-01-10 12:59:38,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:59:38,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061721763] [2022-01-10 12:59:38,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:59:38,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:59:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:59:38,594 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 12:59:38,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:59:38,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061721763] [2022-01-10 12:59:38,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061721763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:59:38,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:59:38,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:59:38,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236759861] [2022-01-10 12:59:38,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:59:38,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:59:38,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:59:38,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:59:38,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:59:38,597 INFO L87 Difference]: Start difference. First operand 7141 states and 11750 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 12:59:39,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:59:39,868 INFO L93 Difference]: Finished difference Result 19631 states and 32157 transitions. [2022-01-10 12:59:39,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:59:39,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 123 [2022-01-10 12:59:39,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:59:39,900 INFO L225 Difference]: With dead ends: 19631 [2022-01-10 12:59:39,900 INFO L226 Difference]: Without dead ends: 13551 [2022-01-10 12:59:39,913 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 12:59:39,915 INFO L933 BasicCegarLoop]: 974 mSDtfsCounter, 400 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:59:39,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 1488 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:59:39,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13551 states. [2022-01-10 12:59:41,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13551 to 13549. [2022-01-10 12:59:41,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13549 states, 13548 states have (on average 1.6340419250073812) internal successors, (22138), 13548 states have internal predecessors, (22138), 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 12:59:41,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13549 states to 13549 states and 22138 transitions. [2022-01-10 12:59:41,071 INFO L78 Accepts]: Start accepts. Automaton has 13549 states and 22138 transitions. Word has length 123 [2022-01-10 12:59:41,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:59:41,071 INFO L470 AbstractCegarLoop]: Abstraction has 13549 states and 22138 transitions. [2022-01-10 12:59:41,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 12:59:41,072 INFO L276 IsEmpty]: Start isEmpty. Operand 13549 states and 22138 transitions. [2022-01-10 12:59:41,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 12:59:41,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:59:41,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:41,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:59:41,085 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:59:41,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:59:41,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1554875975, now seen corresponding path program 1 times [2022-01-10 12:59:41,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:59:41,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464945805] [2022-01-10 12:59:41,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:59:41,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:59:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:59:41,150 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 12:59:41,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:59:41,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464945805] [2022-01-10 12:59:41,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464945805] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:59:41,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:59:41,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:59:41,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097701311] [2022-01-10 12:59:41,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:59:41,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:59:41,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:59:41,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:59:41,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:59:41,153 INFO L87 Difference]: Start difference. First operand 13549 states and 22138 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 12:59:42,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:59:42,701 INFO L93 Difference]: Finished difference Result 26926 states and 43878 transitions. [2022-01-10 12:59:42,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:59:42,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 123 [2022-01-10 12:59:42,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:59:42,763 INFO L225 Difference]: With dead ends: 26926 [2022-01-10 12:59:42,763 INFO L226 Difference]: Without dead ends: 19865 [2022-01-10 12:59:42,786 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 12:59:42,787 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 514 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:59:42,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [514 Valid, 1068 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:59:42,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19865 states. [2022-01-10 12:59:43,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19865 to 13549. [2022-01-10 12:59:43,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13549 states, 13548 states have (on average 1.633303808680248) internal successors, (22128), 13548 states have internal predecessors, (22128), 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 12:59:43,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13549 states to 13549 states and 22128 transitions. [2022-01-10 12:59:43,861 INFO L78 Accepts]: Start accepts. Automaton has 13549 states and 22128 transitions. Word has length 123 [2022-01-10 12:59:43,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:59:43,861 INFO L470 AbstractCegarLoop]: Abstraction has 13549 states and 22128 transitions. [2022-01-10 12:59:43,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 12:59:43,862 INFO L276 IsEmpty]: Start isEmpty. Operand 13549 states and 22128 transitions. [2022-01-10 12:59:43,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 12:59:43,874 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:59:43,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:43,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:59:43,875 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:59:43,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:59:43,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1381970946, now seen corresponding path program 1 times [2022-01-10 12:59:43,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:59:43,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52229015] [2022-01-10 12:59:43,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:59:43,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:59:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:59:44,014 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 12:59:44,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:59:44,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52229015] [2022-01-10 12:59:44,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52229015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:59:44,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:59:44,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:59:44,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410986359] [2022-01-10 12:59:44,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:59:44,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:59:44,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:59:44,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:59:44,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:59:44,017 INFO L87 Difference]: Start difference. First operand 13549 states and 22128 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 12:59:46,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:59:46,734 INFO L93 Difference]: Finished difference Result 31377 states and 51474 transitions. [2022-01-10 12:59:46,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:59:46,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 124 [2022-01-10 12:59:46,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:59:46,783 INFO L225 Difference]: With dead ends: 31377 [2022-01-10 12:59:46,783 INFO L226 Difference]: Without dead ends: 22415 [2022-01-10 12:59:46,802 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 12:59:46,804 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 216 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 12:59:46,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 947 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 12:59:46,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22415 states. [2022-01-10 12:59:48,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22415 to 22413. [2022-01-10 12:59:48,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22413 states, 22412 states have (on average 1.6334106728538282) internal successors, (36608), 22412 states have internal predecessors, (36608), 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 12:59:48,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22413 states to 22413 states and 36608 transitions. [2022-01-10 12:59:48,727 INFO L78 Accepts]: Start accepts. Automaton has 22413 states and 36608 transitions. Word has length 124 [2022-01-10 12:59:48,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:59:48,728 INFO L470 AbstractCegarLoop]: Abstraction has 22413 states and 36608 transitions. [2022-01-10 12:59:48,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 12:59:48,728 INFO L276 IsEmpty]: Start isEmpty. Operand 22413 states and 36608 transitions. [2022-01-10 12:59:48,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 12:59:48,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:59:48,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:48,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:59:48,748 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:59:48,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:59:48,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1297641887, now seen corresponding path program 1 times [2022-01-10 12:59:48,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:59:48,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387612567] [2022-01-10 12:59:48,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:59:48,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:59:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:59:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:59:48,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:59:48,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387612567] [2022-01-10 12:59:48,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387612567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:59:48,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:59:48,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:59:48,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952237306] [2022-01-10 12:59:48,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:59:48,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:59:48,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:59:48,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:59:48,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:59:48,938 INFO L87 Difference]: Start difference. First operand 22413 states and 36608 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 12:59:53,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:59:53,056 INFO L93 Difference]: Finished difference Result 65483 states and 106961 transitions. [2022-01-10 12:59:53,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:59:53,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 124 [2022-01-10 12:59:53,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:59:53,152 INFO L225 Difference]: With dead ends: 65483 [2022-01-10 12:59:53,153 INFO L226 Difference]: Without dead ends: 43719 [2022-01-10 12:59:53,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 12:59:53,198 INFO L933 BasicCegarLoop]: 668 mSDtfsCounter, 1234 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:59:53,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1234 Valid, 1172 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:59:53,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43719 states. [2022-01-10 12:59:57,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43719 to 43717. [2022-01-10 12:59:57,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43717 states, 43716 states have (on average 1.6276191783328757) internal successors, (71153), 43716 states have internal predecessors, (71153), 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 12:59:57,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43717 states to 43717 states and 71153 transitions. [2022-01-10 12:59:57,748 INFO L78 Accepts]: Start accepts. Automaton has 43717 states and 71153 transitions. Word has length 124 [2022-01-10 12:59:57,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:59:57,748 INFO L470 AbstractCegarLoop]: Abstraction has 43717 states and 71153 transitions. [2022-01-10 12:59:57,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 12:59:57,749 INFO L276 IsEmpty]: Start isEmpty. Operand 43717 states and 71153 transitions. [2022-01-10 12:59:57,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 12:59:57,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:59:57,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:57,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:59:57,778 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:59:57,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:59:57,778 INFO L85 PathProgramCache]: Analyzing trace with hash 861921402, now seen corresponding path program 1 times [2022-01-10 12:59:57,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:59:57,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956231345] [2022-01-10 12:59:57,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:59:57,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:59:57,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:59:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:59:57,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:59:57,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956231345] [2022-01-10 12:59:57,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956231345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:59:57,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:59:57,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:59:57,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380170613] [2022-01-10 12:59:57,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:59:57,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:59:57,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:59:57,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:59:57,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:59:57,938 INFO L87 Difference]: Start difference. First operand 43717 states and 71153 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 13:00:06,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:00:06,323 INFO L93 Difference]: Finished difference Result 126153 states and 205048 transitions. [2022-01-10 13:00:06,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:00:06,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 126 [2022-01-10 13:00:06,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:00:06,520 INFO L225 Difference]: With dead ends: 126153 [2022-01-10 13:00:06,521 INFO L226 Difference]: Without dead ends: 84883 [2022-01-10 13:00:06,571 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 13:00:06,571 INFO L933 BasicCegarLoop]: 860 mSDtfsCounter, 389 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:00:06,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 1374 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:00:06,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84883 states. [2022-01-10 13:00:14,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84883 to 84881. [2022-01-10 13:00:15,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84881 states, 84880 states have (on average 1.6177662582469368) internal successors, (137316), 84880 states have internal predecessors, (137316), 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 13:00:15,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84881 states to 84881 states and 137316 transitions. [2022-01-10 13:00:15,427 INFO L78 Accepts]: Start accepts. Automaton has 84881 states and 137316 transitions. Word has length 126 [2022-01-10 13:00:15,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:00:15,427 INFO L470 AbstractCegarLoop]: Abstraction has 84881 states and 137316 transitions. [2022-01-10 13:00:15,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 13:00:15,427 INFO L276 IsEmpty]: Start isEmpty. Operand 84881 states and 137316 transitions. [2022-01-10 13:00:15,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 13:00:15,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:00:15,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:00:15,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 13:00:15,482 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:00:15,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:00:15,482 INFO L85 PathProgramCache]: Analyzing trace with hash -665712878, now seen corresponding path program 1 times [2022-01-10 13:00:15,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:00:15,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141370025] [2022-01-10 13:00:15,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:00:15,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:00:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:00:15,610 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 13:00:15,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:00:15,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141370025] [2022-01-10 13:00:15,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141370025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:00:15,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:00:15,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:00:15,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432389977] [2022-01-10 13:00:15,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:00:15,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:00:15,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:00:15,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:00:15,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:00:15,612 INFO L87 Difference]: Start difference. First operand 84881 states and 137316 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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)