/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_NONE.epf -i ../../../trunk/examples/svcomp/array-patterns/array15_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 21:27:11,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 21:27:11,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 21:27:11,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 21:27:11,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 21:27:11,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 21:27:11,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 21:27:11,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 21:27:11,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 21:27:11,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 21:27:11,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 21:27:11,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 21:27:11,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 21:27:11,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 21:27:11,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 21:27:11,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 21:27:11,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 21:27:11,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 21:27:11,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 21:27:11,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 21:27:11,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 21:27:11,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 21:27:11,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 21:27:11,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 21:27:11,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 21:27:11,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 21:27:11,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 21:27:11,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 21:27:11,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 21:27:11,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 21:27:11,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 21:27:11,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 21:27:11,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 21:27:11,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 21:27:11,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 21:27:11,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 21:27:11,685 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 21:27:11,710 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 21:27:11,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 21:27:11,711 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 21:27:11,711 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 21:27:11,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 21:27:11,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 21:27:11,712 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 21:27:11,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 21:27:11,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 21:27:11,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 21:27:11,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 21:27:11,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 21:27:11,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 21:27:11,713 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 21:27:11,713 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 21:27:11,713 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 21:27:11,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 21:27:11,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 21:27:11,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 21:27:11,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 21:27:11,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 21:27:11,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:27:11,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 21:27:11,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 21:27:11,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 21:27:11,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 21:27:11,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 21:27:11,715 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 21:27:11,715 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 21:27:11,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 21:27:11,715 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 21:27:11,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 21:27:11,716 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 21:27:11,716 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 21:27:11,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 21:27:11,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 21:27:11,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 21:27:11,912 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 21:27:11,913 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 21:27:11,913 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array15_pattern.c [2022-01-10 21:27:11,952 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d43d99e0/e89f3363cecf424dbe0fe832177314d8/FLAG548a897c6 [2022-01-10 21:27:12,295 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 21:27:12,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array15_pattern.c [2022-01-10 21:27:12,300 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d43d99e0/e89f3363cecf424dbe0fe832177314d8/FLAG548a897c6 [2022-01-10 21:27:12,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d43d99e0/e89f3363cecf424dbe0fe832177314d8 [2022-01-10 21:27:12,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 21:27:12,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 21:27:12,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 21:27:12,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 21:27:12,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 21:27:12,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:27:12" (1/1) ... [2022-01-10 21:27:12,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64034863 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:27:12, skipping insertion in model container [2022-01-10 21:27:12,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:27:12" (1/1) ... [2022-01-10 21:27:12,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 21:27:12,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 21:27:12,490 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array15_pattern.c[1424,1437] [2022-01-10 21:27:12,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:27:12,523 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 21:27:12,533 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array15_pattern.c[1424,1437] [2022-01-10 21:27:12,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 21:27:12,563 INFO L208 MainTranslator]: Completed translation [2022-01-10 21:27:12,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:27:12 WrapperNode [2022-01-10 21:27:12,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 21:27:12,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 21:27:12,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 21:27:12,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 21:27:12,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:27:12" (1/1) ... [2022-01-10 21:27:12,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:27:12" (1/1) ... [2022-01-10 21:27:12,601 INFO L137 Inliner]: procedures = 18, calls = 18, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 101 [2022-01-10 21:27:12,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 21:27:12,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 21:27:12,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 21:27:12,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 21:27:12,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:27:12" (1/1) ... [2022-01-10 21:27:12,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:27:12" (1/1) ... [2022-01-10 21:27:12,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:27:12" (1/1) ... [2022-01-10 21:27:12,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:27:12" (1/1) ... [2022-01-10 21:27:12,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:27:12" (1/1) ... [2022-01-10 21:27:12,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:27:12" (1/1) ... [2022-01-10 21:27:12,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:27:12" (1/1) ... [2022-01-10 21:27:12,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 21:27:12,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 21:27:12,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 21:27:12,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 21:27:12,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:27:12" (1/1) ... [2022-01-10 21:27:12,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 21:27:12,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:27:12,668 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 21:27:12,680 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 21:27:12,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 21:27:12,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 21:27:12,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-10 21:27:12,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-01-10 21:27:12,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 21:27:12,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 21:27:12,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-10 21:27:12,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-01-10 21:27:12,755 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 21:27:12,756 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 21:27:13,172 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 21:27:13,176 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 21:27:13,176 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-10 21:27:13,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:27:13 BoogieIcfgContainer [2022-01-10 21:27:13,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 21:27:13,178 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 21:27:13,178 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 21:27:13,182 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 21:27:13,183 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:27:13" (1/1) ... [2022-01-10 21:27:13,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:27:13 BasicIcfg [2022-01-10 21:27:13,323 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 21:27:13,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 21:27:13,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 21:27:13,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 21:27:13,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:27:12" (1/4) ... [2022-01-10 21:27:13,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fa9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:27:13, skipping insertion in model container [2022-01-10 21:27:13,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:27:12" (2/4) ... [2022-01-10 21:27:13,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fa9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:27:13, skipping insertion in model container [2022-01-10 21:27:13,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:27:13" (3/4) ... [2022-01-10 21:27:13,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fa9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:27:13, skipping insertion in model container [2022-01-10 21:27:13,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:27:13" (4/4) ... [2022-01-10 21:27:13,343 INFO L111 eAbstractionObserver]: Analyzing ICFG array15_pattern.cTransformedIcfg [2022-01-10 21:27:13,347 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 21:27:13,347 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 21:27:13,382 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 21:27:13,386 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 21:27:13,387 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 21:27:13,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 states have internal predecessors, (44), 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 21:27:13,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 21:27:13,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:27:13,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:27:13,397 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:27:13,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:27:13,400 INFO L85 PathProgramCache]: Analyzing trace with hash 433608128, now seen corresponding path program 1 times [2022-01-10 21:27:13,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:27:13,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350914713] [2022-01-10 21:27:13,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:27:13,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:27:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:27:13,517 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 21:27:13,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:27:13,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350914713] [2022-01-10 21:27:13,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350914713] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:27:13,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:27:13,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 21:27:13,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171482733] [2022-01-10 21:27:13,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:27:13,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 21:27:13,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:27:13,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 21:27:13,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 21:27:13,551 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 states have internal predecessors, (44), 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 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 21:27:13,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:27:13,564 INFO L93 Difference]: Finished difference Result 55 states and 84 transitions. [2022-01-10 21:27:13,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 21:27:13,566 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2022-01-10 21:27:13,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:27:13,570 INFO L225 Difference]: With dead ends: 55 [2022-01-10 21:27:13,570 INFO L226 Difference]: Without dead ends: 25 [2022-01-10 21:27:13,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 21:27:13,576 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:27:13,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 21:27:13,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-10 21:27:13,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-10 21:27:13,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 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 21:27:13,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-01-10 21:27:13,597 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 11 [2022-01-10 21:27:13,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:27:13,597 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-01-10 21:27:13,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 21:27:13,598 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-01-10 21:27:13,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 21:27:13,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:27:13,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:27:13,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 21:27:13,599 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:27:13,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:27:13,601 INFO L85 PathProgramCache]: Analyzing trace with hash -2092540127, now seen corresponding path program 1 times [2022-01-10 21:27:13,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:27:13,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129427678] [2022-01-10 21:27:13,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:27:13,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:27:13,672 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:27:13,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747732288] [2022-01-10 21:27:13,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:27:13,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:27:13,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:27:13,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:27:13,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 21:27:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:27:13,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 21:27:14,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:27:23,010 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 21:27:23,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 21:27:23,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:27:23,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129427678] [2022-01-10 21:27:23,011 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 21:27:23,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747732288] [2022-01-10 21:27:23,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747732288] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:27:23,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:27:23,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 21:27:23,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144720479] [2022-01-10 21:27:23,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:27:23,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 21:27:23,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:27:23,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 21:27:23,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 21:27:23,014 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 21:27:23,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:27:23,033 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2022-01-10 21:27:23,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 21:27:23,033 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2022-01-10 21:27:23,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:27:23,034 INFO L225 Difference]: With dead ends: 40 [2022-01-10 21:27:23,034 INFO L226 Difference]: Without dead ends: 36 [2022-01-10 21:27:23,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 21:27:23,035 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:27:23,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 57 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 25 Unchecked, 0.0s Time] [2022-01-10 21:27:23,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-10 21:27:23,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-01-10 21:27:23,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 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 21:27:23,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2022-01-10 21:27:23,040 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 18 [2022-01-10 21:27:23,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:27:23,040 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2022-01-10 21:27:23,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 21:27:23,040 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2022-01-10 21:27:23,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 21:27:23,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:27:23,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:27:23,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 21:27:23,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:27:23,242 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:27:23,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:27:23,243 INFO L85 PathProgramCache]: Analyzing trace with hash -349729792, now seen corresponding path program 1 times [2022-01-10 21:27:23,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:27:23,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916288353] [2022-01-10 21:27:23,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:27:23,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:27:23,258 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:27:23,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414790660] [2022-01-10 21:27:23,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:27:23,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:27:23,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:27:23,265 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:27:23,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 21:27:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:27:23,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 21:27:23,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:27:23,701 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 21:27:23,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 21:27:23,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:27:23,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916288353] [2022-01-10 21:27:23,702 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 21:27:23,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414790660] [2022-01-10 21:27:23,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414790660] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:27:23,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:27:23,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 21:27:23,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783960643] [2022-01-10 21:27:23,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:27:23,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 21:27:23,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:27:23,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 21:27:23,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 21:27:23,703 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 21:27:23,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:27:23,936 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2022-01-10 21:27:23,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 21:27:23,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2022-01-10 21:27:23,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:27:23,937 INFO L225 Difference]: With dead ends: 60 [2022-01-10 21:27:23,937 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 21:27:23,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 21:27:23,938 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 66 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 21:27:23,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 17 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 21:27:23,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 21:27:23,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2022-01-10 21:27:23,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 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 21:27:23,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-01-10 21:27:23,942 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 18 [2022-01-10 21:27:23,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:27:23,942 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-01-10 21:27:23,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 21:27:23,942 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-01-10 21:27:23,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 21:27:23,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:27:23,943 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] [2022-01-10 21:27:23,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 21:27:24,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-10 21:27:24,147 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:27:24,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:27:24,147 INFO L85 PathProgramCache]: Analyzing trace with hash 361063076, now seen corresponding path program 1 times [2022-01-10 21:27:24,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:27:24,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132711180] [2022-01-10 21:27:24,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:27:24,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:27:24,168 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:27:24,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504265688] [2022-01-10 21:27:24,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:27:24,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:27:24,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:27:24,190 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:27:24,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 21:27:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:27:24,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-10 21:27:24,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:27:24,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 21:27:24,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 21:27:24,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:27:24,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132711180] [2022-01-10 21:27:24,512 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 21:27:24,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504265688] [2022-01-10 21:27:24,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504265688] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:27:24,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:27:24,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 21:27:24,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564998858] [2022-01-10 21:27:24,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:27:24,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 21:27:24,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:27:24,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 21:27:24,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 21:27:24,514 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 21:27:24,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:27:24,736 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2022-01-10 21:27:24,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 21:27:24,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 24 [2022-01-10 21:27:24,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:27:24,737 INFO L225 Difference]: With dead ends: 73 [2022-01-10 21:27:24,737 INFO L226 Difference]: Without dead ends: 38 [2022-01-10 21:27:24,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 21:27:24,738 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 30 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 21:27:24,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 54 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 21:27:24,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-10 21:27:24,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2022-01-10 21:27:24,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 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 21:27:24,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-01-10 21:27:24,741 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 24 [2022-01-10 21:27:24,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:27:24,741 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-01-10 21:27:24,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 21:27:24,742 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2022-01-10 21:27:24,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 21:27:24,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:27:24,742 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] [2022-01-10 21:27:24,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 21:27:24,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:27:24,947 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:27:24,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:27:24,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1158790111, now seen corresponding path program 1 times [2022-01-10 21:27:24,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:27:24,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162933671] [2022-01-10 21:27:24,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:27:24,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:27:24,990 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:27:24,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215573139] [2022-01-10 21:27:24,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:27:24,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:27:24,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:27:24,992 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:27:25,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 21:27:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:27:25,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 21:27:25,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:27:38,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 21:27:38,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 21:27:38,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:27:38,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162933671] [2022-01-10 21:27:38,894 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 21:27:38,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215573139] [2022-01-10 21:27:38,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215573139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 21:27:38,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 21:27:38,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 21:27:38,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750693556] [2022-01-10 21:27:38,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 21:27:38,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 21:27:38,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:27:38,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 21:27:38,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 21:27:38,907 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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 21:27:38,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:27:38,922 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2022-01-10 21:27:38,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 21:27:38,923 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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 26 [2022-01-10 21:27:38,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:27:38,926 INFO L225 Difference]: With dead ends: 50 [2022-01-10 21:27:38,927 INFO L226 Difference]: Without dead ends: 43 [2022-01-10 21:27:38,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 21:27:38,928 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 21:27:38,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 57 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 21 Unchecked, 0.0s Time] [2022-01-10 21:27:38,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-10 21:27:38,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-01-10 21:27:38,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 42 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:27:38,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2022-01-10 21:27:38,952 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 26 [2022-01-10 21:27:38,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:27:38,954 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2022-01-10 21:27:38,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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 21:27:38,954 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2022-01-10 21:27:38,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 21:27:38,955 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:27:38,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 21:27:38,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 21:27:39,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:27:39,160 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:27:39,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:27:39,162 INFO L85 PathProgramCache]: Analyzing trace with hash -638161248, now seen corresponding path program 1 times [2022-01-10 21:27:39,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:27:39,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390371510] [2022-01-10 21:27:39,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:27:39,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:27:39,225 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:27:39,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [866274722] [2022-01-10 21:27:39,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:27:39,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:27:39,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:27:39,228 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:27:39,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 21:27:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:27:39,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-10 21:27:39,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 21:27:42,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 21:27:42,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 21:27:45,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 21:27:45,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 21:27:45,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390371510] [2022-01-10 21:27:45,167 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 21:27:45,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866274722] [2022-01-10 21:27:45,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866274722] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 21:27:45,167 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 21:27:45,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2022-01-10 21:27:45,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787625404] [2022-01-10 21:27:45,167 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 21:27:45,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 21:27:45,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 21:27:45,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 21:27:45,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-01-10 21:27:45,169 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:27:49,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 21:27:49,194 INFO L93 Difference]: Finished difference Result 112 states and 135 transitions. [2022-01-10 21:27:49,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 21:27:49,194 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-10 21:27:49,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 21:27:49,196 INFO L225 Difference]: With dead ends: 112 [2022-01-10 21:27:49,196 INFO L226 Difference]: Without dead ends: 99 [2022-01-10 21:27:49,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2022-01-10 21:27:49,197 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 168 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-10 21:27:49,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 94 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 119 Invalid, 0 Unknown, 130 Unchecked, 2.7s Time] [2022-01-10 21:27:49,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-01-10 21:27:49,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 29. [2022-01-10 21:27:49,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 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 21:27:49,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-01-10 21:27:49,204 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 26 [2022-01-10 21:27:49,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 21:27:49,204 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-01-10 21:27:49,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 21:27:49,205 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-01-10 21:27:49,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 21:27:49,205 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 21:27:49,205 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] [2022-01-10 21:27:49,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-10 21:27:49,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:27:49,410 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 21:27:49,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 21:27:49,410 INFO L85 PathProgramCache]: Analyzing trace with hash -313626523, now seen corresponding path program 1 times [2022-01-10 21:27:49,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 21:27:49,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408238665] [2022-01-10 21:27:49,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:27:49,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 21:27:49,432 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 21:27:49,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484406213] [2022-01-10 21:27:49,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 21:27:49,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 21:27:49,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 21:27:49,433 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 21:27:49,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 21:27:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 21:27:50,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 37 conjunts are in the unsatisfiable core [2022-01-10 21:27:50,108 INFO L286 TraceCheckSpWp]: Computing forward predicates...