/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/nla-digbench-scaling/mannadiv_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 09:14:41,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 09:14:41,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 09:14:41,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 09:14:41,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 09:14:41,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 09:14:41,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 09:14:41,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 09:14:41,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 09:14:41,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 09:14:41,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 09:14:41,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 09:14:41,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 09:14:41,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 09:14:41,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 09:14:41,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 09:14:41,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 09:14:41,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 09:14:41,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 09:14:41,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 09:14:41,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 09:14:41,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 09:14:41,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 09:14:41,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 09:14:41,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 09:14:41,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 09:14:41,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 09:14:41,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 09:14:41,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 09:14:41,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 09:14:41,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 09:14:41,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 09:14:41,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 09:14:41,609 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 09:14:41,631 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 09:14:41,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 09:14:41,632 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 09:14:41,632 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 09:14:41,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 09:14:41,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 09:14:41,633 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 09:14:41,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 09:14:41,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 09:14:41,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 09:14:41,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 09:14:41,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 09:14:41,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 09:14:41,634 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 09:14:41,634 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 09:14:41,634 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 09:14:41,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 09:14:41,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 09:14:41,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 09:14:41,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 09:14:41,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 09:14:41,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:14:41,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 09:14:41,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 09:14:41,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 09:14:41,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 09:14:41,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 09:14:41,635 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 09:14:41,636 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 09:14:41,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 09:14:41,636 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 09:14:41,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 09:14:41,636 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 09:14:41,637 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 09:14:41,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 09:14:41,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 09:14:41,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 09:14:41,849 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 09:14:41,849 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 09:14:41,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_valuebound10.c [2022-01-10 09:14:41,921 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc1e64cd2/163fca9feeb746809e984cb4c2b4d927/FLAG961b287a0 [2022-01-10 09:14:42,226 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 09:14:42,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_valuebound10.c [2022-01-10 09:14:42,235 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc1e64cd2/163fca9feeb746809e984cb4c2b4d927/FLAG961b287a0 [2022-01-10 09:14:42,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc1e64cd2/163fca9feeb746809e984cb4c2b4d927 [2022-01-10 09:14:42,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 09:14:42,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 09:14:42,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 09:14:42,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 09:14:42,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 09:14:42,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:14:42" (1/1) ... [2022-01-10 09:14:42,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14bf4c86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:14:42, skipping insertion in model container [2022-01-10 09:14:42,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 09:14:42" (1/1) ... [2022-01-10 09:14:42,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 09:14:42,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 09:14:42,859 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_valuebound10.c[573,586] [2022-01-10 09:14:42,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:14:42,880 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 09:14:42,890 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_valuebound10.c[573,586] [2022-01-10 09:14:42,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 09:14:42,908 INFO L208 MainTranslator]: Completed translation [2022-01-10 09:14:42,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:14:42 WrapperNode [2022-01-10 09:14:42,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 09:14:42,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 09:14:42,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 09:14:42,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 09:14:42,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:14:42" (1/1) ... [2022-01-10 09:14:42,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:14:42" (1/1) ... [2022-01-10 09:14:42,939 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 56 [2022-01-10 09:14:42,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 09:14:42,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 09:14:42,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 09:14:42,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 09:14:42,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:14:42" (1/1) ... [2022-01-10 09:14:42,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:14:42" (1/1) ... [2022-01-10 09:14:42,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:14:42" (1/1) ... [2022-01-10 09:14:42,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:14:42" (1/1) ... [2022-01-10 09:14:42,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:14:42" (1/1) ... [2022-01-10 09:14:42,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:14:42" (1/1) ... [2022-01-10 09:14:42,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:14:42" (1/1) ... [2022-01-10 09:14:42,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 09:14:42,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 09:14:42,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 09:14:42,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 09:14:42,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:14:42" (1/1) ... [2022-01-10 09:14:42,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 09:14:42,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:14:43,025 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 09:14:43,051 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 09:14:43,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 09:14:43,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 09:14:43,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 09:14:43,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 09:14:43,124 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 09:14:43,125 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 09:14:43,226 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 09:14:43,231 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 09:14:43,231 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 09:14:43,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:14:43 BoogieIcfgContainer [2022-01-10 09:14:43,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 09:14:43,233 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 09:14:43,233 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 09:14:43,252 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 09:14:43,254 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:14:43" (1/1) ... [2022-01-10 09:14:43,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:14:43 BasicIcfg [2022-01-10 09:14:43,295 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 09:14:43,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 09:14:43,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 09:14:43,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 09:14:43,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 09:14:42" (1/4) ... [2022-01-10 09:14:43,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4be3a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:14:43, skipping insertion in model container [2022-01-10 09:14:43,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 09:14:42" (2/4) ... [2022-01-10 09:14:43,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4be3a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 09:14:43, skipping insertion in model container [2022-01-10 09:14:43,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 09:14:43" (3/4) ... [2022-01-10 09:14:43,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f4be3a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 09:14:43, skipping insertion in model container [2022-01-10 09:14:43,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 09:14:43" (4/4) ... [2022-01-10 09:14:43,301 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_valuebound10.cTransformedIcfg [2022-01-10 09:14:43,304 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 09:14:43,304 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 09:14:43,353 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 09:14:43,361 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 09:14:43,361 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 09:14:43,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 20 states have internal predecessors, (28), 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 09:14:43,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 09:14:43,381 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:14:43,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:14:43,382 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:14:43,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:14:43,386 INFO L85 PathProgramCache]: Analyzing trace with hash -427646614, now seen corresponding path program 1 times [2022-01-10 09:14:43,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:14:43,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891205745] [2022-01-10 09:14:43,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:14:43,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:14:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:14:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:14:43,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:14:43,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891205745] [2022-01-10 09:14:43,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891205745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:14:43,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:14:43,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 09:14:43,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807298979] [2022-01-10 09:14:43,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:14:43,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 09:14:43,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:14:43,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 09:14:43,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 09:14:43,574 INFO L87 Difference]: Start difference. First operand has 21 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 20 states have internal predecessors, (28), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 09:14:43,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:14:43,584 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2022-01-10 09:14:43,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 09:14:43,585 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-01-10 09:14:43,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:14:43,590 INFO L225 Difference]: With dead ends: 39 [2022-01-10 09:14:43,590 INFO L226 Difference]: Without dead ends: 17 [2022-01-10 09:14:43,592 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 09:14:43,595 INFO L933 BasicCegarLoop]: 22 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, 22 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 09:14:43,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:14:43,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-10 09:14:43,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-01-10 09:14:43,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 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 09:14:43,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-01-10 09:14:43,616 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2022-01-10 09:14:43,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:14:43,617 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-01-10 09:14:43,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 09:14:43,618 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-01-10 09:14:43,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 09:14:43,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:14:43,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:14:43,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 09:14:43,620 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:14:43,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:14:43,623 INFO L85 PathProgramCache]: Analyzing trace with hash 460780588, now seen corresponding path program 1 times [2022-01-10 09:14:43,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:14:43,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589590447] [2022-01-10 09:14:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:14:43,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:14:43,656 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:14:43,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247256892] [2022-01-10 09:14:43,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:14:43,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:14:43,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:14:43,659 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 09:14:43,661 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 09:14:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:14:43,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 09:14:43,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:14:43,927 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 09:14:43,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:14:43,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:14:43,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589590447] [2022-01-10 09:14:43,927 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:14:43,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247256892] [2022-01-10 09:14:43,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247256892] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:14:43,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:14:43,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 09:14:43,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656363586] [2022-01-10 09:14:43,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:14:43,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 09:14:43,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:14:43,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 09:14:43,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 09:14:43,930 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 09:14:43,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:14:43,980 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-01-10 09:14:43,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 09:14:43,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 9 [2022-01-10 09:14:43,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:14:43,982 INFO L225 Difference]: With dead ends: 28 [2022-01-10 09:14:43,982 INFO L226 Difference]: Without dead ends: 26 [2022-01-10 09:14:43,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 09:14:43,984 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 27 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:14:43,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 28 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:14:43,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-01-10 09:14:43,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2022-01-10 09:14:43,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 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 09:14:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-01-10 09:14:43,988 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 9 [2022-01-10 09:14:43,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:14:43,988 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-01-10 09:14:43,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 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 09:14:43,988 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-01-10 09:14:43,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 09:14:43,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:14:43,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:14:44,007 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 09:14:44,207 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 09:14:44,208 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:14:44,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:14:44,208 INFO L85 PathProgramCache]: Analyzing trace with hash -482135673, now seen corresponding path program 1 times [2022-01-10 09:14:44,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:14:44,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419246745] [2022-01-10 09:14:44,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:14:44,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:14:44,236 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:14:44,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960956519] [2022-01-10 09:14:44,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:14:44,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:14:44,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:14:44,237 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 09:14:44,248 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 09:14:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:14:44,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 09:14:44,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:14:44,659 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 09:14:44,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:14:44,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:14:44,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419246745] [2022-01-10 09:14:44,659 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:14:44,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960956519] [2022-01-10 09:14:44,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960956519] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:14:44,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:14:44,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 09:14:44,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330862511] [2022-01-10 09:14:44,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:14:44,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 09:14:44,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:14:44,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 09:14:44,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 09:14:44,661 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 09:14:44,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:14:44,773 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-01-10 09:14:44,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 09:14:44,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 13 [2022-01-10 09:14:44,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:14:44,773 INFO L225 Difference]: With dead ends: 26 [2022-01-10 09:14:44,773 INFO L226 Difference]: Without dead ends: 22 [2022-01-10 09:14:44,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 09:14:44,775 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 09:14:44,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 39 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:14:44,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-01-10 09:14:44,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-01-10 09:14:44,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 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 09:14:44,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-01-10 09:14:44,778 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 13 [2022-01-10 09:14:44,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:14:44,778 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-01-10 09:14:44,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 09:14:44,778 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-01-10 09:14:44,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 09:14:44,779 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:14:44,779 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:14:44,802 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 09:14:44,979 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 09:14:44,979 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:14:44,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:14:44,980 INFO L85 PathProgramCache]: Analyzing trace with hash -2059967359, now seen corresponding path program 1 times [2022-01-10 09:14:44,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:14:44,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117394197] [2022-01-10 09:14:44,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:14:44,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:14:44,992 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:14:44,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [770398307] [2022-01-10 09:14:44,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:14:44,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:14:44,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:14:44,995 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 09:14:44,997 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 09:14:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:14:45,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-10 09:14:45,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:14:45,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:14:45,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:14:49,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:14:49,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:14:49,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117394197] [2022-01-10 09:14:49,813 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:14:49,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770398307] [2022-01-10 09:14:49,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770398307] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:14:49,814 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:14:49,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-01-10 09:14:49,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691011329] [2022-01-10 09:14:49,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:14:49,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 09:14:49,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:14:49,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 09:14:49,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-01-10 09:14:49,815 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 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 09:14:50,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:14:50,351 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-01-10 09:14:50,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 09:14:50,351 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 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 14 [2022-01-10 09:14:50,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:14:50,352 INFO L225 Difference]: With dead ends: 30 [2022-01-10 09:14:50,352 INFO L226 Difference]: Without dead ends: 28 [2022-01-10 09:14:50,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650 [2022-01-10 09:14:50,353 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 43 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 09:14:50,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 45 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 52 Invalid, 0 Unknown, 19 Unchecked, 0.2s Time] [2022-01-10 09:14:50,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-10 09:14:50,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2022-01-10 09:14:50,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 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 09:14:50,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-01-10 09:14:50,359 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 14 [2022-01-10 09:14:50,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:14:50,360 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-01-10 09:14:50,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 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 09:14:50,360 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-01-10 09:14:50,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 09:14:50,360 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:14:50,360 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:14:50,380 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 09:14:50,561 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 09:14:50,561 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:14:50,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:14:50,562 INFO L85 PathProgramCache]: Analyzing trace with hash -2059937568, now seen corresponding path program 1 times [2022-01-10 09:14:50,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:14:50,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058557055] [2022-01-10 09:14:50,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:14:50,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:14:50,607 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:14:50,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363759033] [2022-01-10 09:14:50,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:14:50,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:14:50,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:14:50,624 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 09:14:50,626 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 09:14:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:14:50,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 09:14:50,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:14:51,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:14:51,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:14:51,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:14:51,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:14:51,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058557055] [2022-01-10 09:14:51,095 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:14:51,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363759033] [2022-01-10 09:14:51,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363759033] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:14:51,096 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:14:51,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 8 [2022-01-10 09:14:51,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546364839] [2022-01-10 09:14:51,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:14:51,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 09:14:51,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:14:51,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 09:14:51,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-10 09:14:51,097 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 09:14:53,242 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 09:14:55,248 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 09:14:57,256 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 09:14:59,260 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 09:15:01,505 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 09:15:03,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 09:15:05,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 09:15:07,517 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-01-10 09:15:07,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:15:07,708 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2022-01-10 09:15:07,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 09:15:07,709 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 14 [2022-01-10 09:15:07,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:15:07,709 INFO L225 Difference]: With dead ends: 38 [2022-01-10 09:15:07,709 INFO L226 Difference]: Without dead ends: 36 [2022-01-10 09:15:07,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-01-10 09:15:07,710 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 27 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 14 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-01-10 09:15:07,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 33 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 40 Invalid, 8 Unknown, 0 Unchecked, 16.3s Time] [2022-01-10 09:15:07,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-10 09:15:07,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2022-01-10 09:15:07,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 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 09:15:07,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-01-10 09:15:07,715 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 14 [2022-01-10 09:15:07,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:15:07,715 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-01-10 09:15:07,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 09:15:07,715 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-01-10 09:15:07,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 09:15:07,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:15:07,716 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:15:07,735 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 09:15:07,931 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 09:15:07,931 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:15:07,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:15:07,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1678151844, now seen corresponding path program 1 times [2022-01-10 09:15:07,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:15:07,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240330029] [2022-01-10 09:15:07,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:15:07,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:15:07,940 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:15:07,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847253845] [2022-01-10 09:15:07,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:15:07,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:15:07,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:15:07,942 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 09:15:07,946 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 09:15:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:15:07,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 09:15:07,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:15:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:15:08,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:15:08,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:15:08,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240330029] [2022-01-10 09:15:08,392 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:15:08,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847253845] [2022-01-10 09:15:08,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847253845] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:15:08,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:15:08,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 09:15:08,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407350932] [2022-01-10 09:15:08,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:15:08,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 09:15:08,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:15:08,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 09:15:08,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 09:15:08,394 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 09:15:08,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:15:08,954 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-01-10 09:15:08,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 09:15:08,954 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 09:15:08,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:15:08,954 INFO L225 Difference]: With dead ends: 39 [2022-01-10 09:15:08,955 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 09:15:08,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-10 09:15:08,956 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 20 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 09:15:08,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 40 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 09:15:08,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 09:15:08,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24. [2022-01-10 09:15:08,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 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 09:15:08,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2022-01-10 09:15:08,962 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 18 [2022-01-10 09:15:08,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:15:08,962 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2022-01-10 09:15:08,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 09:15:08,962 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-01-10 09:15:08,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 09:15:08,963 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:15:08,963 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:15:08,979 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 09:15:09,175 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 09:15:09,176 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:15:09,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:15:09,176 INFO L85 PathProgramCache]: Analyzing trace with hash 64658491, now seen corresponding path program 1 times [2022-01-10 09:15:09,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:15:09,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443276518] [2022-01-10 09:15:09,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:15:09,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:15:09,184 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:15:09,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118304075] [2022-01-10 09:15:09,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:15:09,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:15:09,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:15:09,191 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 09:15:09,192 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 09:15:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:15:09,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 09:15:09,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:15:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:15:09,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:15:09,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:15:09,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:15:09,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443276518] [2022-01-10 09:15:09,790 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:15:09,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118304075] [2022-01-10 09:15:09,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118304075] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 09:15:09,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 09:15:09,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 14 [2022-01-10 09:15:09,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240286658] [2022-01-10 09:15:09,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:15:09,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 09:15:09,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:15:09,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 09:15:09,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-01-10 09:15:09,791 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 09:15:10,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:15:10,251 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-01-10 09:15:10,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 09:15:10,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 09:15:10,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:15:10,252 INFO L225 Difference]: With dead ends: 26 [2022-01-10 09:15:10,252 INFO L226 Difference]: Without dead ends: 22 [2022-01-10 09:15:10,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2022-01-10 09:15:10,253 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 21 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 09:15:10,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 27 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 09:15:10,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-01-10 09:15:10,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2022-01-10 09:15:10,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 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 09:15:10,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-01-10 09:15:10,256 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 18 [2022-01-10 09:15:10,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:15:10,257 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-01-10 09:15:10,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 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 09:15:10,257 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-01-10 09:15:10,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 09:15:10,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:15:10,257 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:15:10,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-10 09:15:10,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:15:10,464 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:15:10,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:15:10,464 INFO L85 PathProgramCache]: Analyzing trace with hash 2005749837, now seen corresponding path program 1 times [2022-01-10 09:15:10,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:15:10,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764782767] [2022-01-10 09:15:10,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:15:10,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:15:10,475 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:15:10,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [57273446] [2022-01-10 09:15:10,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:15:10,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:15:10,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:15:10,488 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:15:10,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-10 09:15:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 09:15:10,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-10 09:15:10,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:15:11,748 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:15:11,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 09:15:19,504 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 09:15:19,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:15:19,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764782767] [2022-01-10 09:15:19,505 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:15:19,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57273446] [2022-01-10 09:15:19,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57273446] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 09:15:19,505 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 09:15:19,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-01-10 09:15:19,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231218165] [2022-01-10 09:15:19,505 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 09:15:19,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-10 09:15:19,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:15:19,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-10 09:15:19,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2022-01-10 09:15:19,506 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 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 09:15:22,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:15:22,369 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-01-10 09:15:22,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-10 09:15:22,370 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 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 19 [2022-01-10 09:15:22,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:15:22,370 INFO L225 Difference]: With dead ends: 50 [2022-01-10 09:15:22,370 INFO L226 Difference]: Without dead ends: 48 [2022-01-10 09:15:22,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=346, Invalid=844, Unknown=0, NotChecked=0, Total=1190 [2022-01-10 09:15:22,371 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 64 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 09:15:22,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 54 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 75 Invalid, 0 Unknown, 34 Unchecked, 0.8s Time] [2022-01-10 09:15:22,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-01-10 09:15:22,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2022-01-10 09:15:22,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 39 states have internal predecessors, (46), 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 09:15:22,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2022-01-10 09:15:22,382 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 19 [2022-01-10 09:15:22,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:15:22,383 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2022-01-10 09:15:22,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 21 states have internal predecessors, (35), 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 09:15:22,383 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2022-01-10 09:15:22,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-10 09:15:22,383 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:15:22,383 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:15:22,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-10 09:15:22,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:15:22,606 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:15:22,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:15:22,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1508958452, now seen corresponding path program 2 times [2022-01-10 09:15:22,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:15:22,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054057906] [2022-01-10 09:15:22,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:15:22,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:15:22,620 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:15:22,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759847519] [2022-01-10 09:15:22,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 09:15:22,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:15:22,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:15:22,624 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:15:22,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-10 09:15:22,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 09:15:22,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 09:15:22,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 09:15:22,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 09:15:22,778 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 09:15:22,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 09:15:22,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 09:15:22,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054057906] [2022-01-10 09:15:22,779 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 09:15:22,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759847519] [2022-01-10 09:15:22,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759847519] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 09:15:22,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 09:15:22,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 09:15:22,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82044638] [2022-01-10 09:15:22,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 09:15:22,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 09:15:22,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 09:15:22,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 09:15:22,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 09:15:22,780 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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 09:15:22,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 09:15:22,804 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2022-01-10 09:15:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 09:15:22,804 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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 29 [2022-01-10 09:15:22,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 09:15:22,805 INFO L225 Difference]: With dead ends: 77 [2022-01-10 09:15:22,805 INFO L226 Difference]: Without dead ends: 43 [2022-01-10 09:15:22,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 09:15:22,806 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 26 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 09:15:22,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 26 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 09:15:22,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-10 09:15:22,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-01-10 09:15:22,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 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 09:15:22,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-01-10 09:15:22,816 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 29 [2022-01-10 09:15:22,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 09:15:22,816 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-01-10 09:15:22,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 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 09:15:22,816 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-01-10 09:15:22,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 09:15:22,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 09:15:22,817 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 09:15:22,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-10 09:15:23,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-10 09:15:23,025 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 09:15:23,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 09:15:23,025 INFO L85 PathProgramCache]: Analyzing trace with hash -972906048, now seen corresponding path program 3 times [2022-01-10 09:15:23,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 09:15:23,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610298485] [2022-01-10 09:15:23,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 09:15:23,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 09:15:23,042 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 09:15:23,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [553680341] [2022-01-10 09:15:23,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-10 09:15:23,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 09:15:23,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 09:15:23,043 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 09:15:23,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process